EVALUATING EFFECTIVENESS OF SOME AGRICULTURAL OPERATIONS ON COTTON BY USING REMOTE SENSING TECHNOLOGY

摘要

Airborne digital imagery detected the differences in spectral response among various levels of cotton damage by boll weevils. Plants with severe fruit damage tended to be more vegetative than those with minor fruit damage. Experimental and analysis results indicate that airborne imagery permitted both visual and quantitative differentiations among defoliation treatments. Ground reflectance data and airborne multispectral imagery were able to differentiate among the herbicide treatments for cotton stalk destruction. Remote sensing can be a useful tool for assessing boll weevil damage within fields and predicting yield of cotton affected by damage. Moreover, remote sensing can reduce the time and labor cost for accurate assessments of various treatments, especially if a large number of treatments are to be evaluated over large areas.