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The impact of farmers’ assessments of risk management strategies on their adoption willingness
SHANG Yan, XIONG Tao
2021, 20 (12): 3323-3338.   DOI: 10.1016/S2095-3119(21)63749-8
Abstract182)      PDF in ScienceDirect      
Farmers’ assessments of risk management strategies and how the assessments influence their willingness to adopt these strategies are poorly understood.  This study conducts a structured survey of 469 farmers to investigate how farmers assess both crop insurance and crop price insurance, the impact of the assessments on their adoption willingness, and in particular, the differences in assessments and adoption willingness between crop insurance and crop price insurance.  Empirical results show that farmers’ assessments on crop insurance can be significantly improved through communication and experience.  The most effective way to improve farmers’ assessments on crop price insurance is providing adequate information about the insurance products.  Furthermore, farmers’ adoption willingness would be enhanced by improved assessment of both crop yield and crop price insurance.  This study provides the first empirical evidence that farmers have limited information to assess insurance, which significantly influences their willingness to adopt.  This finding reflects that the dissemination of insurance policies, the effectiveness of insurance, and the availability of insurance services significantly enable farmers’ ability to assess risk management strategies, which potentially increases farmers’ willingness to adopt insurance.  
 
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The Extraction, Isolation and Identification of Exudates from the Roots of Flaveria bidentis
YANG Xing, ZHANG Li-hui, SHI Cui-ping, SHANG Yan, ZHANG Jin-lin, HAN Jian-min , DONG
2014, 13 (1): 105-114.   DOI: 10.1016/S2095-3119(13)60495-5
Abstract1676)      PDF in ScienceDirect      
Large amounts of Flaveria bidentis’s root culturing solution were obtained by using DFT (deep flow technique) equipment and these solution which was vacuum concentrated (10, 20 mg mL-1) can have a certain inhibition on Triticum aestivum, Cucumis sativus, Raphanus sativus, Amaranthus retroflexus, Setaria viridis, Chenopodium album, Echinochloa crusgalli and Chloris virgata. This outcome suggested some active compounds in the root exudates of Flaveria bidentis can inhibit the germination, seedling elongation and root length. The dichloromethane extract of root exudates was identificated by GC-MS, and 29 kinds of compounds, including esters, hydrocarbons, ketones, thiazole, amines, etc. were obtained and the phthalate n-octyl ester, phthalate 2-ethylhexyl ester were proved to be allelochemicals. The culturing solution of root exudates was separated through the resin column and silica gel column and a component inhibiting seedling height, root length and fresh weight of wheat was got. There were 6 kinds of organic compounds in this component including dioctyl phthalate, 1,2-phthalate, mono(2-ethylhexyl) ester by GC-MS.
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