| [damage and economic threshold of the third generation of cotton bollworm in the yangtze river basin cotton region of jiangsu province]. | the impact of the third generation of cotton bollworm helicoverpa armigera on shedding of buds and bolls and on bolling was studied by inoculating its larvae to cotton plants. the results showed that the shed rate of buds and bolls damaged by the larvae had the greatest impact on bolling, and its direct path coefficient was up to -0.8917. the larval population density and the number of buds and bolls damaged by the larvae impacted bolling mainly through the damaged shed rate during inoculating s ... | 2001 | 11813442 |