搜索结果: 1-3 共查到“植物保护学 economics”相关记录3条 . 查询时间(0.109 秒)
Integrating Economics in the Critical Period for Weed Control Concept in Corn
Benin corn–weed competition Germany Gompertz logistic mechanical weeding
2015/12/21
The effect of weed interference on corn yield and the critical period for weed control (CPWC) were determined in Germany and Benin. Treatments with weed control starting at different crop growth stage...
Economics of Pesticides Use among Maize Farmers in Edo State, Nigeria
Maize farmers pesticides efficiency elasticity
2010/11/9
This paper estimated the degree of price responsiveness as well as the efficiency of pesticides use on maize farms in Edo state of Nigeria. The results indicated that the demand for pesticides was neg...
Conceptualising the economics of plant health protection against invasive pests
pests invasion plant protection pest control Leptinotarsa decemlineata
2010/8/13
Threats to animal and plant health by invading organisms are increasing due to trade liberalisation and increased movement of goods and people. This paper conceptualises an economic approach to protec...