Reducing Herbicide Rates - Crop and Soil Science - Lecture Slides, Slides of Botany and Agronomy

Download Reducing Herbicide Rates - Crop and Soil Science - Lecture Slides and more Slides Botany and Agronomy in PDF only on Docsity! Reducing Herbicide Rates When is it appropriate to reduce herbicide rates? Docsity.com Reasons to consider reduced application rates • A desire to cut costs of production • Concern about the environmental effects of herbicides • New regulations on herbicide use • Concern about herbicide carry-over Docsity.com Possible concerns for the farmer center on the possibility of reduced yield if weeds are not controlled by the reduced-rate application. Docsity.com Sound weed management programs include several components; • Mechanical cultivation • Promoting vigorous crop competition • Crop rotation • Herbicide use Docsity.com Additional factors must be considered: • Cultivation, labor, and time must be available when needed. – Herbicides degrade at a faster rate when applied at a lower rate. – Cultivation in a timely manner ( 30 to 40 days after planting) becomes critically important. • This is more essential when there is no rain within 7-10 days after herbicide application Docsity.com