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Journal of Integrative Agriculture  2020, Vol. 19 Issue (2): 406-427    DOI: 10.1016/S2095-3119(19)62703-6
Section 4 Integrative management strategies for potato insect pests Advanced Online Publication | Current Issue | Archive | Adv Search |
Botanicals and plant strengtheners for potato and tomato cultivation in Africa
1 Department of Zoological Sciences, Addis Ababa University, Addis Ababa 1000, Ethiopia
2 Department of Biology, Kotebe Metropolitan University, Addis Ababa 1000, Ethiopia
3 College of Agriculture, Animal Science and Veterinary Medicine (UR-CAVM) Busogo Campus, University of Rwanda, Musanze 210, Rwanda
4 Department of Crop Sciences, Tshwane University of Technology, Pretoria 0183, South Africa 
5 Department of Plant Breeding, Agricultural Research Council-Vegetable and Ornamental Plants, Pretoria 0001, South Africa
6 Department of Plant Protection Biology, Swedish University of Agricultural Sciences (SLU), Alnarp SE-23053, Sweden
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This review provides a summary of botanicals and plant strengtheners that have potential uses for disease and pest management in potato and tomato cultivation in African.  We discuss their possible use to prevent major diseases and pests which infest potato and tomato, such as early and late blight, bacterial wilt, potato tuber moth, and tomato leafminer.  There are several examples of the successful uses of botanicals for pathogen and pest control relevant for different African climatic conditions; however, most of these studies have been conducted in vitro and often lack field verification.  Plant strengtheners (substances that induce and improve crop resistance, yield, and quality) are little studied and used in Africa in comparison to North America and Europe.  The possible benefits of using botanicals and plant strengtheners instead of conventional pesticides are discussed here in relation to human health and the environment as well as their modes of action and accessibility to farmers.  Lack of knowledge of the composition and active ingredients of extracts, environmental concerns, uncertainties regarding stability and formulation, lack of legislation and limited support from governments, hamper the development of botanicals and plant strengtheners for use in sustainable African agriculture.
Keywords:  African agriculture        botanicals        crop protection        pathogen        plant strengtheners        pesticide        pests        diseases        potato        tomato
Received: 11 November 2018   Accepted:
Fund: We thank the AgriFoSe2030 programme and the Swedish International Development Cooperation Agency (SIDA) as well as the Swedish Foundation for International Cooperation in Research and Higher Education (STINT) for financial support.
Corresponding Authors:  Correspondence Erik ALEXANDERSSON, E-mail:; Tewodros Mulugeta, E-mail: mulugetatewodros@    

Cite this article: 


Botanicals and plant strengtheners for potato and tomato cultivation in Africa
. Journal of Integrative Agriculture, 19(2): 406-427.

Abate T, van Huis A, Ampofo J. 2000. Pest management strategies in traditional agriculture: An African perspective. Annual Review Entomology, 45, 631–659.
Abayhne M A, Chauhan N M. 2016. Antifungal activity of various medicinal plants against late blight of potato from Ethiopia. Journal of Scientific Research and Reports, 12, 1–9.
Abdel-Kader, El-mougy N S, Aly M D E, Lashin S M. 2012. Integration of biological and fungicidal alternatives for controlling foliar diseases of vegetables under greenhouse conditions. International Journal of Agriculture and Forestry, 2, 38–48.
Abd-El-Khair H, Haggag M. 2007. Application of some Egyptian medicinal plant extracts against potato late and early blights. Research Journal of Agriculture and Biological Sciences, 3, 166–175.
Abo-Elyousr K, Asran M R. 2009. Antibacterial activity of certain plant extracts against bacterial wilt of tomato. Archives of Phytopathology and Plant Protection, 42, 573–578.
Adebayo O S. 2011. Control of bacterial wilt disease of tomato: A review of research efforts in Nigeria. Acta Horticulturae, 914, 35–37.
Adesegun E A, Adebayo O S, Akintokun A K. 2012. Effect of Ocimum gratissimum and Cymbopogon citratus extracts on Sclerotium rolfsii Sacc of tomato (Lycopersicon esculentum Mill.). Medicinal and Aromatic Plant Science and Biotechnology, 6, 68–71.
Adesemoye T O. 2017. Introduction to biological products for crop production and protection. Nebraska Extension, EC3019, 1–4.
Ahmed A A I, Hashem M Y, Mohamed S M, Khalil S H S. 2013. Protection of potato crop against Phthorimaea operculella (Zeller) infestation using frass extract of two noctuid insect pests under laboratory and storage simulation conditions. Archives of Phytopathology and Plant Protection, 46, 2409–2419.
Alexandersson E, Mulugeta T, Lankinen Å, Liljeroth E, Andreasson E. 2016. Plant resistance inducers against pathogens in Solanaceae species - from molecular mechanisms to field application. International Journal of Molecular Sciences, 17, 1–25.
Alzohairy M A. 2016. Therapeutics role of Azadirachta indica (Neem) and their active constituents in diseases prevention and treatment. Evidence-Based Complementary and Alternative Medicine, doi: 10.1155/2016/7382506
Amadioha A C. 2001. Fungi toxic effects of some leaf extracts against Rhizopus oryzae causing tuber rot of potato. Archives of Phytopathology and Plant Protection, 33, 499–507.
Amienyo C, Onuze E. 2015. In vitro evaluation of Carica papaya L. and Lantana camara L. extracts in the control of late blight of potato caused by Phytophthora infestans (Mont.) de Bary. Agricultural Science Research Journal, 5, 187–194.
Amin M, Mulugeta N, Selvaraj T. 2013. Field evaluation of new fungicide, Victory 72 WP for management of potato and tomato late blight (Phytophthora infestans (Mont) de Bary) in West Shewa Highland, Oromia, Ethiopia. Journal of Plant Pathology and Microbiology, 4, 192.
Animashaun B, Popoola A, Enikuomehin O, Aiyelaagbe I, Imonmin J. 2017. Induced resistance to fusarium wilt (Fusarium oxysporum) in tomato using plant growth activator, acibenzolar-S-methyl. Nigerian Journal of Biotechnology, 32, 83–90.
Arafa A, Farouk S, Mohamed H. 2011. Effect of potassium fertilizer, biostimulants and effective microorganisms as well as their interactions on potato growth, photosynthetic pigments and stem anatomy. Journal of Plant Production, 2, 1017–1035.
Arah I K. 2015. An overview of post-harvest challenges facing tomato production in Africa. In: African Studies Association of Australasia and the Pacific (AFSAAP) 37th Annual Conference Africa: Diversity and Development. Dunedin, New Zealand. pp. 1–21.
Atawodi S E, Atawodi J C. 2009. Azadirachta indica (neem): A plant of multiple biological and pharmacological activities. Phytochemistry Reviews, 8, 601–620.
Ayalew G, Fekadu A. 2013. A Field Guide to Recognize and Manage the South American Tomato Moth, Tuta Absoluta. Ethiopian Institute of Agricultural Research, Addis Ababa. p. 15.
Baccelli I, Mauch-Mani B. 2017 “When the story proceeds backward: The discovery of endogenous β-aminobutyric acid as the missing link for a potential new plant hormone.” Communicative and Integrative Biology, 10, 552–559.
Balestra G M, Heydari A, Ceccarelli D, Ovidi E, Quattrucci A. 2009. Antibacterial effect of Allium sativum and Ficus carica extracts on tomato bacterial pathogens. Crop Protection, 28, 807–811.
Bengtsson T, Holefors A, Witzell J, Andreasson E, Liljeroth E. 2014. Activation of defence responses to Phytophthora infestans in potato by BABA. Plant Pathology, 63, 193–202.
Birch P R J, Bryan G, Fenton B, Gilroy E M, Hein I, Jones J T, Toth I K. 2012. Crops that feed the world 8: Potato: are the trends of increased global production sustainable? Food Security, 4, 477–508.
Borisade O A, Kolawole A O, Adebo G M, Uwaidem Y I. 2017. The tomato leafminer (Tuta absoluta) (Lepidoptera: Gelechiidae) attack in Nigeria: Effect of climate change on over-sighted pest or agro-bioterrorism? Journal of Agricultural Extension and Rural Development,  9, 163–171.
Brezeanu P M, Brezeanu C, Amb?rus S, C?lin M, Cristea T O. 2014. A review of the most important pest insects and its influence on tomato culture. Biologie, 23, 68–73.
Burra D D, Berkowitz O, Hedley P E, Morris J, Resjö S, Levander F, Liljeroth E, Andreasson E, Alexandersson E. 2014. Phosphite-induced changes of the transcriptome and secretome in Solanum tuberosum leading to resistance against Phytophthora infestans. BMC Plant Biology, 14, 1–17.
CABI (Center for Agruculture and Bioscience International). 2017. Phytophthora infestans (Phytophthora blight). [2018-08-20].
Calvo P, Nelson L, Kloepper J W. 2014. Agricultural uses of plant biostimulants. Plant and Soil, 383, 3–41.
Camire M E, Kubow S, Donnelly D. 2009. Potatoes and human health. Critical Reviews in Food Science and Nutrition, 49, 823–840.
Cavoski I, Caboni P, Miano T. 2011. Natural pesticides and future perspectives pesticides in the modern world - pesticides use and management. [2017-6-15].
Chandler D, Bailey A S, Tatchell G M, Davidson G, Greaves J J, Grant W P. 1994. The development, regulation and use of biopesticides for integrated pest management. Philosophical Transactions of the Royal Society (B), 366, 1987–1998.
CIP (International Potato Center). 1996. Major Potato Diseases, Insects, and Nematodes. CIP, Lima, Peru.
Costa S J. 2014. Reducing Food Losses in Sub-Saharan Africa. United Nations World Food Programme, Kampala.
Dar S A, Dar N A, Bhat M A, Bhat M H. 2014. Prospects, utilization and challenges of botanical pesticides in sustainable agriculture. International Journal of Molecular Biology and Biochemistry, 2, 1–14.
Dash S P, Dixit S, Sahoo S. 2017. Phytochemical and biochemical characterizations from leaf extracts from Azadirachta Indica: an important medicinal plant. Biochemical Anallytical Biochemistry, 6, 1–4.
Deshi S, Wonang D, Imoni E, Gowok H G. 2015. Efficacy of naturally occurring antifungal agents from five plants for the control of late blight (Phytophthora infestans) on Irish potato. International Journal of Scientific of Engineering Research, 6, 1990–2004.
Devaux A, Kromann P, Ortiz O. 2014. Potatoes for sustainable global food security. Potato Research, 57, 185–199.
Diao X, Hazell P, Thurlow J. 2010. The role of agriculture in African development. World Development, 38, 1375–1383.
Dias J S. 2012. Nutritional quality and health benefits of vegetables: A review. Food and Nutrition Sciences, 3, 1354–1374.
Dubey N K, Srivastava B, Kumar A. 2008. Current status of plant products as botanical pesticides in storage pest management. Biopesticides, 1, 182–186.
Eftkhar A H E, Arafat N F, Riad N F. 2011. Efficacy of some plant extracts and the commercial biocide, dolphin on potato tuber worm, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) under field and storage conditions. Journal of Plant Protection and Pathology, 2, 1123–1131.
El-Mougy N, Abdel-Kader M, Aly D. 2012. Application of plant resistance inducers for controlling early and late blights of tomato under plastic houses conditions. Journal of Applied Sciences Research, 8, 3406–3414.
El-Mougy N S, Abdel-kader M M. 2009. Salts application for suppressing potato early blight disease. Journal of Plant Protection Research, 49, 353–361.
Elmar S G. 2013. Tackling low potato yields in eastern Africa: An overview of constraints and potential strategies. International Potato Center, Lima, Peru. pp. 72–80.
El-Sinary N H. 2006. Evaluation of the insecticidal effect of pumpkin Cucurbita pepo against potato tubermoth Phthorimaea operculella (Zeller) combined with gamma irradiation. American-Eurasian Journal of Scientific Research, 1, 18–22.
Ezzat A S, Asfour H El-S, Tolba M H. 2011. Improving yield and quality of some new potato varieties in winter plantation using organic stimulators. Journal of Plant Production, 2, 653 –671.
FAO (Food and Agriculture Organization). 2008. International year of the potato Hidden Treasure. [2017-6-15]. 
FAO (Food and Agriculture Organization). 2014. FAOST. [2017-02-16].
Farouk S, Youssef S A, Ali A A. 2012. Exploitation of biostimulants and vitamins as an alternative strategy to control early blight of tomato plants. Asian Journal of Plant Science, 11, 36–43.
Filatov V P. 1951. Tissue treatment (Doctrine on biogenic stimulators). II. Hypothesis of tissue therapy, or the doctrine on biogenic stimulators. Priroda, 12, 20–28.
Forrer H R, Vogelgsang S, Musa T. 2017. Botanicals and phosphonate show potential to replace copper for control of potato late blight. Journal of Fungi, 3, 65.
Fufa F, Hanson P, Dagnoko S, Dhaliwal M. 2011. AVRDC - The world vegetable center tomato breeding in Sub-Saharan Africa: Lessons from the past, present work, and future prospects. Acta Horticulturae,  911, 87–98.
Galeane M C, Martins C H G, Massuco J, Bauab T M, Sacramento L V S. 2017. Phytochemical screening of Azadirachta indica A. Juss for antimicrobial activity. African Journal of Microbiology Research, 11, 117–122.
Gill H K, Chahil G, Goyal G, Gill A K, Gillett-Kaufman J L. 2014. Potato tuberworm Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae). IFAS Extension, University of Florida. pp. 1–7.
Goufo P, Fontem D A, Ngnokam D. 2010. Evaluation of plant extracts for tomato late blight control in Cameroon. New Zealand Journal of Crop and Horticultural Science, 38, 171–176.
Goufo P, Mofor C, Fontem D, Ngnokam D. 2008. High efficacy of extracts of Cameroon plants against tomato late blight disease. Agronomy for Sustainable Development, 28, 567–573.
Grzywacz D, Cherry A, Gwynn R. 2009. Biological pesticides for Africa: Why has so little of the research undertaken to date resulted in new products to help Africa’s poor? Outlooks on Pest Management, 20, 1–5.
Guleria S, Tiku A. 2009. Botanicals in pest management: Current status and future perspectives. In: Peshin R, Dhawan A, eds., Integrated Pest Management: Innovation-Development Process. Springer, India. pp. 317–330.
Gurjar M S, Ali S, Akhtar M, Singh K S. 2012. Efficacy of plant extracts in plant disease management. Agricultural Sciences, 3, 425–433.
Hajdu S M D, Leonard E M D. 1961. Action of ryanodine on mammalian cardiac muscle effects on contractility, and reversal of digitalis-induced Ventricular Arrhythmias. Circulation Research, 9, 1291–1298.
Hassan M, Bereika M, Abo-Elnaga H, Sallam M. 2009. Direct antimicrobial activity and induction of systemic resistance in potato plants against bacterial wilt disease by plant extracts. Plant Pathology Journal, 25, 352–360.
Hassanein, M N, Abou Zeid, A M, Youssef A K, Mahmoud A D. 2010. Control of tomato early blight and wilt using aqueous extract of neem leaves. Phythopathologia Mediterranea,  49, 143–151.
Haverkort A, Koesveld F, Van Schepers H, Wijnands J, Wustman R, Zhang X. 2012. Potato Prospects for Ethiopia: On the Road to Value Addition. Praktijkonderzoek Plant & Omgeving (Applied Plant Research), The Netherlands. pp. 1–66.
Haverkort A J, Struik P C, Visser R G F, Jacobsen E. 2009. Applied biotechnology to combat late blight in potato caused by Phytophthora infestans. Potato Research, 52, 249–264.
Hayden J E, Brambila J. 2013. Tomato Leafminer, Tuta Absoluta (Meyrick) (Lepidoptera: Gelechiidae), A Devastating Pest of Tomatoes. Pest Alert DACS-P-01844. Florida Department of Agriculture and Consumer Services, USA.
Hikal W M, Baeshen R S, Said-Al Ahl H A. 2017. Botanical insecticide as simple extractives for pest control. Cogent Biology, 3, 1–16.
Hirpa A, Meuwissen M P M, Tesfaye A, Lommen W J M, Lansink A O, Tsegaye A, Struik P C. 2010. Analysis of seed potato systems in Ethiopia. American Journal of Potato Research, 87, 537–552.
Hodge S, Thompson G A, Powell G. 2005. Application of DL-β-aminobutyric acid (BABA) as a root drench to legumes inhibits the growth and reproduction of the pea aphid Acyrthosiphon pisum (Hemiptera: Aphididae). Bulletin of Entomological Research, 95, 449–455.
Houmy K, Clarke L, Ashburner J, Kienzle J. 2013. Agricultural Mechanization in Sub-Saharan Africa: Guidelines for Preparing. Plant Production and Protection Division, FAO, Rome.
Hubert J Y, Nguefack J, Charles D, Daniel F, Sandrine S, Romain F, Pza H. 2013. Antifungal potential and phytochemical analysis of extracts from seven Cameroonian plants against late blight. International Journal of Current Microbiology and Applied Science, 2, 140–154.
Ibrahim A, Sisay A. 2011. Evaluation of some botanicals to control potato tuber moth Phthorimaea operculella (Lepidoptera: Gelechiidae) at Bako, West Shoa, Ethiopia. East African Journal of Sciences, 5, 37–40.
Isman M B. 2006. Botanical insecticides, deterrents, and repellents in modern agriculture and an increasingly regulated world. Annual Review of Entomology, 51, 45–66.
Isman M B. 2008. Perspective botanical insecticides: for richer, for poorer. Pest Management Science, 64, 8–11.
Isman M B, Grieneisen M L. 2014. Botanical insecticide research: Many publications, limited useful data. Trends in Plant Science, 19, 140–145.
Itelima J U, Nwokedi V C, Ogbonna A I, Nyam M A. 2016. Phytochemical screening and antimicrobial activity evaluation of aqueous and ethanolic extracts of the leaf of Azadirachta indica Juss (neem) on some microorganisms. World Journal of Microbiology, 3, 56–60.
van Ittersum M K, van Bussel L G J, Wolf J, Grassini P, van Wart J, Guilpart N, Claessens L, Groot H, Wiebe K, Mason-D’Croz D, Yang H, Boogaard H, van Oort P A J, van Loona M P, Saito K, Adimo O, Adjei-Nsiah S, Agali A, Bala A, Chikowo R, et al. 2016. Can sub-Saharan Africa feed itself? Proceedings of the National Academy of Sciences of the United States of America, 113, 14964–14969.
du Jardin P. 2015. Plant biostimulants: Definition, concept, main categories and regulation. Scientia Horticulturae, 196, 3–14.
Joseph A, Ese E, Ademiluyi B, Aluko P. 2016. Efficacy of selected plant extracts in the management of tomato early blight disease caused by Alternaria solani. Asian Journal of Plant Pathology, 11, 48–52.
Kalita S, Kumar G, Karthik L, Rao K V B. 2012. A review on medicinal properties of Lantana camara linn. Research Journal of Pharmacy and Technology, 5, 711–715.
Kalthof B, Sato N, Iwase M, Shen Y T, Mirsky I, Patrick T A, Vatner S F. 1995. Effects of ryanodine on cardiac contraction, excitation-contraction coupling and “treppe” in the conscious dog. Journal of Molecular and Cellular Cardiology, 27, 2111–2121.
Kareru P, Rotich Z K, Maina E W. 2013. Use of botanicals and safer insecticides designed in controlling insects: The African case. In: Insecticides-Development of Safer and More Effective Technologies. IntechOpen, London, United Kingdom.
Kassa B, Hiskias Y. 1996. Tuber yield loss assessment of potato cultivars with different level of resistance to late blight. In: Bekele E, Abdullah A, Yemane A, eds., Proceedings of the 3rd Annual Conference of Crop Protection Society of Ethiopia 18–19 May, Addis Ababa Ethiopia, CPSE, and Addis Ababa. CPSE, Ethiopia. pp. 149–152.
King J C, Slavin J L. 2013. White potatoes, human health, and dietary guidance. Advances in Nutrition (An International Review Journal), 4, 393S–401S.
Kona N E M, Taha A K, Mahmoud M E E. 2014. Effects of botanical extracts of neem (Azadirachta indica) and jatropha (Jatropha curcus) on eggs and larvae of tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae). Persian Gulf Crop Protection, 3, 41–46.
Korycinska A, Moran H. 2009. South American tomato moth Tuta absoluta. Plant Pest Notice No 56. Food and Environment Research Agency, UK.
Kumari S, Rath K P. 2014. Extraction and characterization of chitin and chitosan from (Labeo rohit) fish scales. Procedia Materials Science, 6, 482–489
Lacey L A, Kroschel J, Wraight S P, Goettel M S. 2008. An introduction to microbial control of insect pests of potato. Fruit, Vegetable and Cereal Science and Biotechnology, 3, 20–24.
Lengai G M W, Muthomi J W, Narla R D. 2017. Efficacy of plant extracts and antagonistic fungi in managing tomato pests and diseases under field conditions. Journal of Agriculture and Life Sciences, 4, 20–27.
Liljeroth E, Lankinen Å, Wiik L, Burra D, Alexandersson E, Andreasson E. 2016. Potassium phosphite combined with reduced doses of fungicides provides efficient protection against potato late blight in large-scale field trials. Crop Protection, 86, 42–55.
Lutaladio N, Castaldi L. 2009. Potato: The hidden treasure. Journal of Food Composition and Analysis, 22, 491–493.
McLeod A, Masimba T, Jensen T, Serfontein K, Coertze S. 2017. Evaluating spray programs for managing copper resistant Pseudomonas syringae pv. tomato populations on tomato in the Limpopo region of South Africa. Crop Protection, 102, 32–42.
Mekonnen Y, Agonafir T. 2002. Pesticide sprayers’ knowledge, attitude and practice of pesticide use on agricultural farms of Ethiopia. Occupational Medicine, 52, 311–315.
Mengistie B T, Mol A P J, Oosterveer P. 2017. Pesticide use practices among smallholder vegetable farmers in Ethiopian Central Rift Valley. Environment, Development and Sustainability, 19, 301–324.
Miresmailli S, Isman M B. 2014. Botanical insecticides inspired by plant-herbivore chemical interactions. Trends in Plant Science, 19, 29–35.
Moussa S, Sharma A, Baiomy F, El-Adl F E. 2013. The status of tomato leafminer; Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) in Egypt and potential effective pesticides. Academic Journal of Entomology, 6, 110–115.
Muhinyuza J B, Shimelis H, Melis Sibiya R J, Nzaramba M N. 2012. Participatory assessment of potato production constraints and trait preferences in potato cultivar development in Rwanda. International Journal of Development and Sustainability, 1, 358–380.
Mulugeta T, Abreha K, Tekie H, Mulatu B, Yesuf M, Andreasson E, Liljeroth E, Alexandersson E. 2019. Phosphite protects against potato and tomato late blight in tropical climates and has varying toxicity depending on the Phytophthora infestans isolates. Crop Protection, 121, 139–146.
Mulugeta T, Mulatu B, Tekie H, Yesuf M, Andreasson E, Alexandersson E. 2019. Phosphite alters the behavioral response of potato tuber moth (Phthorimaea operculella) to field-grown potato. Pest Managagment Science, 75, 616–621.
Munyuli T, Cihire K, Rubabura D, Mitima K, Kalimba Y, Tchombe N, Mulangane E K, Birhashwira O, Umoja M, Cinyabuguma E, Mukadi T T, Ilunga M T, Mukendi R T. 2017. Farmers’ perceptions, believes, knowledge and management practices of potato pests in South-Kivu Province, eastern of Democratic Republic of Congo. Open Agriculture, 2, 362–385.
Musyimi D M, Opande G T, Chesire J, Sikuku P A, Buyela D. 2017. Antimicrobial potential and screening of phytochemical compounds of Lantana camara Linn. IJRDO-Journal of Biological Science, 3, 18–35.
Muthoni J, Nyamongo D O. 2009. A review of constraints to ware Irish potatoes production in Kenya. Journal of Horticulture and Forestry, 1, 98–102.
Nashwa S M A, Abo-elyousr K A M. 2012. Evaluation of various plant extracts against the early blight disease of tomato plants under greenhouse and field conditions. Plant Protection Science, 48, 74–79.
Negrelle R R B, Gomes E C. 2007. Cymbopogon citratus (Dc) Stapf: Chemical composition and biological activities. Revolution of Brasilian Plant Medical Botucatu, 9, 80–92.
Nehal M H, Hussein M I, Hak S H G, Hammad M A. 2014. Effect of two plant extracts and four aromatic oils on Tuta Absoluta population and productivity of tomato cultivar gold stone. Nature and Science, 12, 108–118.
Ngadze E. 2014. In vitro and greenhouse evaluation of botanical extracts for antifungal activity against Phythopthora infestans. Journal of Biopesticides, 7, 199–204.
Njogu M, Nyankanga R, Muthomi J, Muindi E. 2014. Studies on the effects of stinging nettle extract, phosphoric acid and conventional fungicide combinations on the management of potato late blight and tuber yield in the Highlands of Kenya. Journal of Agriculture and Food Science, 2, 119–127.
Nordey T, Basset-Mens C, De Bon H, Martin T, Déletré E, Simon S, Parrot L, Despretz H, Huat J, Biard Y, Dubois T. 2017. Protected cultivation of vegetable crops in sub-Saharan Africa: Limits and prospects for smallholders. A review. Agronomy for Sustainable Development, 37, 1–20.
Nowicki M, Foolad M R, Nowakowska M, Kozik E U. 2012. Potato and tomato late blight caused by Phytophthora infestans: An overview of pathology and resistance breeding. Plant Disease, 96, 4–17.
Nzanza B, Mashela P W. 2012. Control of whiteflies and aphids in tomato (Solanum lycopersicum L.) by fermented plant extracts of neem leaf and wild garlic. African Journal of Biotechnology, 11, 16077–16082.
Oerke C, Dehne W, Schönbeck F, Weber A. 2012. Crop Production and Crop Protection: Estimated Losses in Major Food and Cash Crops. Elsevier, Amsterdam, The Netherlands.
Oerke E. 2006. Crop losses to pests. Journal of Agricultural Science, 144, 31–43.
Ogunsola J F, Aduramigba-Modupe A. 2014. Evaluation of four plant extracts in the control of post-harvest fungi tuber rot of Irish potato (Solanum tuberosum). African Journal of Root and Tuber Crops, 11, 1–9.
Ohunakin A O, Bolanle O O. 2017. In vitro antifungal activities of three aromatic plant extracts against Fusarium Oxysporum Schlechtend. Fr. F. Sp. Lycopersici (Sacc.) causal organism of fusarium wilt in tomato. Journal of Plant Sciences and Agricultural Research, 1, 1–5.
Okey E N. 2015. The Effect of Chromolaena odorata leaf extract on fungi associated with cassava (Manihot esculenta) (Crantz) tuber rot. IOSR Journal of Agriculture and Veterinary Science, 8, 63–68.
Olanya M, Nyankanga R, Ojiambo P, Lemaga B, Kakuhenzire R, Fontem D. 2012. Optimization of late blight and bacterial wilt management in potato production systems in the highland tropics of Africa. In: He Z, Larkin R, Honeycutt W, eds., Sustainable Potato Production: Global Case Studies. Springer, New York. pp. 509–531.
Olanya O M, Adipala E, Hakiza J J, Kedera J C, Ojiambo P, Mukalazi J M, Forbes G, Nelson R. 2001. Epidemiology and population dynamics of phytophthora infestans in sub-Saharan Africa: Progress and Constraints. African Crop Science Journal, 9, 181–193.
Orji J O, Nwuzo A C, Ejikeugwu P C, Ugbo E N, Moses I B, Nwakaeze E A, Nwankwo C P. 2015. Antifungal activities of Ocimum gratissimum and Gongronemalati folium leaves on Colletotrichum species isolated from spoilt tomatoes. International Journal of Pharmaceutical Science Invention, 4, 42–45.
Patterson M, Alyokhin A. 2014. Survival and development of Colorado potato beetles on potatoes treated with phosphite. Crop Protection, 61, 38–42.
Pavela R. 2016. History, presence and perspective of using plant extracts as commercial botanical insecticides and farm products for protection against insects - A review. Plant Protection Science, 52, 229–241.
Radcliffe E B. 1982. Insect pests of potato. Annual Review of Entomology, 27, 173–192.
Rajashekar Y, Bakthavatsalam N, Shivanandappa T. 2012. Botanicals as grain protectants. Psyche (A journal of Entomology), 12, 1–13.
Raman K V, Grünwald N J, Fry W E. 2000. Promoting international collaboration for potato late blight disease management. Pesticide Outlook, 15, 181–185.
Regnault-roger C, Philogène B J R. 2008. Past and current prospects for the use of botanicals and plant allelochemicals in integrated pest management. Pharmaceutical Biology, 209, 41–52.
Rondon S I. 2010. The potato tuberworm: A literature review of its biology, ecology, and control. American Journal of Potato Research, 87, 149–166.
Rosegrant M W, Koo J, Cenacchi N, Ringler C, Robertson R, Fisher M, Cox C, Garrett K, Perez N D, Sabbagh P. 2014. Food Security in a World of Natural Resource Scarcity. International Food Policy Research Institute, Washington, D.C.
Sanginga N. 2015. Root and tuber crops (cassava, yam, potato and sweet Potato). Feeding Africa: An action plan for African agricultural transformation, 1–26. [2017-11-29]. and_Tuber_Crops__Cassava__Yam__Potato_and_Sweet_Potato_.pdf
Saravanakumar D, Karthiba L, Ramjegathesh R, Prabakar K, Raguchander T. 2015. Characterization of bioactive compounds from botanicals for the management of plant diseases. In: Ganesan S, Vadivel K, Jayaraman J, eds., Sustainable Crop Disease Management Using Natural Products. Center for Agruculture and Bioscience International (CABI), Wallingford, UK. pp. 1–18.
Savary S, Ficke A, Aubertot J N, Hollier C. 2012. Crop losses due to diseases and their implications for global food production losses and food security. Food Security, 4, 519–537.
Saxena M, Saxena J, Khare S. 2012. A brief review on: Therapeutical values of Lantana camara plant. Intenational Journal of Phatmacy and Life Science, 3, 1551–1554.
Shaheen A M, Ragab M E, Rizk F A, Mahmoud S H, Soliman M M, Omar N M. 2017. Effect of some active stimulants on plant growth, tubers yield and nutritional values of potato plants grown in newly reclaimed soil. Research Journal of Pharmaceutical, Biological and Chemical Sciences, 8, 581–596.
Sharaby A, Rahman H A, Abdel-Aziz S S, Moawad S S. 2014. Natural plant oils and terpenes as protector for the potato tubers against Phthorimaea operculella infestation by different application methods. Ecologia Balkanica, 6, 45–59.
Shiberu T, Getu E. 2017. Effects of crude extracts of medicinal plants in the management of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) under laboratory and glasshouse conditions in Ethiopia. Journal of Entomology and Nematology, 9, 9–13.
Shiberu T, Getu E. 2018. Evaluation of bio-pesticides on integrated management of tomato leafminer, Tuta absoluta (Meyrick) (Gelechiidae: Lepidoptera) on tomato crops in Western Shewa of central Ethiopia. Entomology, Ornithology & Herpetology (Current Research), 7, 206.
Shuping D S S, Eloff J N. 2017. The use of plants to protect plants and food against fungal pathogens: A review. African Journal of Traditional, Complementary, and Alternative Medicines, 14, 120–127.
Sileshi G, Teriessa J. 2001. Tuber damage by potato tuber moth, Phthorimae operculella Zeller (Lepidoptera: Gelechiidae), in the field in eastern Ethiopia. International Journal of Pest Management, 47, 109–113.
Simeon A U, Abubakar A. 2014. Evaluation of some plant extracts for the control of bacterial soft rot of tubers. American Journal of Experimental Agriculture, 4, 1869–1876.
Smith N. 2017. Middle East and Africa biostimulants market by drivers, restraints, opportunities, and challenges analysis for the period. [2017-10-20].
Smith J. 2015. Crops, crop pests and climate change - Why Africa needs to be better prepared. CCAFS Working Paper No. 114. CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS), Copenhagen, Denmark.
Sola P, Mvumi M B, Ogendo O J, Mponda O, Kamanula F J, Nyirenda P S, Belmain R S, Stevenson C P. 2014. Botanical pesticide production, trade and regulatory mechanisms in sub-Saharan Africa: making a case for plant-based pesticidal products. Food Security, 6, 369–384.
Soni P, Siddiqui A A, Dwivedi J, Soni V. 2012. Pharmacological properties of Datura stramonium L. as a potential medicinal tree: An overview. Asian Pacific Journal Tropical Biomedicine, 2, 1002–1008.
South African Government. 2009. Fertilizers, Farm Feeds, Agricultural Remedies and Stock Remedies Act (Act No. 36 of 1947). South Africa Government Gazette No. R 227, 2009 March 6, Government Printer, Pretoria.
Stavělíková H. 2008. Morphological characteristics of garlic (Allium sativum L.) genetic resources collection – Information. Horticulture Science, 35, 130–135.
Stegelmeier B L, Field R, Panter K E, Hall J O, Welch K D, Pfister J A, Gardner D R, Lee S T, Colegate S, Davis Z, Green B T, Cook D. 2013. Selected poisonous plants affecting animal and human health. In: Haschek W M, Rousseaux C G, Wallig M A, eds., Haschek and Rousseaux’s Handbook of Toxicologic Pathology. 3rd ed. pp. 1259–1314.
Susmitha S, Vidyamol K K, Ranganayaki P, Vijayaragavan R. 2013. Phytochemical extraction and antimicrobial properties of Azadirachta indica (neem). Global Journal of Pharmacology, 7, 316–320.
Tadesse M, Steiner U, Hindorf H, Dehne H. 2003. Bryophyte extracts with activity against plant pathogenic fungi. SINET: Ethiopian Journal of Science, 26, 55–62.
Talukder A F. 2006. Plant products as potential stored-products insect management agents - A mini review. Emirates Journal of Agricultural Sciences, 18, 17–32.
Tefera Y K. 2017. Evaluation of botanical insecticides for the management of potato tuber moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) under laboratory condition. Academic Research Journal of Agricultural Science and Research, 5, 291–308.
Tegegne G, Pretorius J. 2007. In vitro and in vivo antifungal activity of crude extracts and powdered dry material from Ethiopian wild plants against economically important plant pathogens. BioControl, 52, 877–888.
Tijjani A, Adebitan S A, Gurama A U, Haruna S G, Safiya T. 2014. Effect of some selected plant extracts on Aspergillus flavus, a causal agent of fruit rot disease of tomato (Solanum lycopersicum) in Bauchi State. International Journal of Biosciences, 4, 244–252.
La Torre A, Battaglia V, Caradonia F. 2013. Legal aspects of the use of plant strengtheners (biostimulants) in Europe. Bulgarian Journal of Agricultural Science, 19, 1183–1189.
La Torre A, Battaglia V, Caradonia F. 2016. An overview of the current plant biostimulant legislations in different European Member States. Journal of the Science of Food and Agriculture, 96, 727–734.
Trucksess M W, Scott P M. 2008. Mycotoxins in botanicals and dried fruits: A review. Food Additives and Contaminants (Part A), 25, 181–192.
Turkensteen L J. 1987. Survey of diseases and pests in Africa: Fungal and bacterial diseases. Acta Horticulturae, 213, 151–159.
UNDESAPD (United Nations Department of Economic and Social Affairs Population Division). 2015. World Population Prospects 2015 – Data Booklet (ST/ESA/SER.A/377).
Wagura A, Kimenju J, Gichimu B. 2011. Comparative antibacterial effects of raw extracts and essential oils of Ocimum gratissimum L. against Ralstonia solanacearum (Smith). International Journal of Plant Pathology, 2, 144–152.
Weller S C, Culbreath A K, Gianessi L, Godfrey L D. 2014. The Contributions of Pesticides to Pest Management in Meeting the Global Need for Food Production by 2050. Council for Agricultural Science and Technology, Iowa, USA. pp. 1–28.
Were H K, Kabira J N, Kinyua Z M, Olubayo F M, Karinga J K, Aura J, Lees A K, Cowan G H, Torrance L. 2013. Occurrence and distribution of potato pests and diseases in Kenya. Potato Research, 56, 325–342.
Wondafrash M, Getu E, Terefe G. 2012. Survival and feeding of African bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) affected by neem, Azadirachta indica (A. Juss) extracts. World Journal of Agricultural Sciences, 8, 280–285.
WTEx (World’s top export). 2017. Potatoes exports by country. [2017-11-01].
Yakhin O I, Lubyanov A A, Yakhin I A, Brown P H. 2017. Biostimulants in plant science: A global perspective. Frontiers in Plant Science, 7, 2049.
Zaker M. 2016. Natural plant products as eco-friendly fungicides for plant diseases control - A review. The Agriculturists, 14, 134–141.
Zekeya N, Ndakidemi P A, Chacha M, Mbega E. 2017. Tomato leafminer, Tuta absoluta (Meyrick 1917), an emerging agricultural pest in Sub-Saharan Africa: Current and prospective management strategies. African Journal of Agricultural Research, 12, 389–396.
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