Site-specific herbicide applications based on weed maps provide effective control

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" Site-specific herbicide applications based on weed maps provide effective control "
Koller, Martina; Lanini, W. Thomas

Document Type	:	AL
Record Number	:	944671
Doc. No	:	LA35s0n6t1
Language of Document	:	English
Main Entry	:	Koller, Martina; Lanini, W. Thomas
Title & Author	:	Site-specific herbicide applications based on weed maps provide effective control [Article]\ Koller, Martina; Lanini, W. Thomas
Title of Periodical	:	California Agriculture
Volume/ Issue Number	:	59/3
Date	:	2005
Abstract	:	More-effective weed control in agricultural fields can be achieved by utilizing information about the spatial distribution of the previous year’s mature weeds. In our study, variable-rate herbicide applications based on weed infestation maps developed just before the previous year’s harvest provided effective weed control. The results showed that when information about the spatial distribution of the previous year’s weed seedlings or mature weeds was used, weed control was comparable to uniform, one-rate, herbicide applications, while the total amount of herbicide applied decreased. Herbicide use was reduced an estimated 39% for the seedling map and 24% for the mature map approach. However, incorporating the weed-seed redistribution from harvest to application time into the treatment maps could further improve weed control.