Title: The Critical Period of Weed Control in Grain Corn (<i>Zea mays</i>)
Abstract: Field studies were conducted in southern Ontario to determine the critical period of weed control in grain corn and the influence of weed interference on corn leaf area. The Gompertz and logistic equations were fitted to data representing increasing durations of weed control and weed interference, respectively. The beginning of the critical period varied from the 3- to 14-leaf stages of corn development However, the end of the critical period was less variable and ended on average at the 14-leaf stage. Weed interference reduced corn leaf area by reducing the expanded leaf area of each individual leaf and accelerating senescence of lower leaves. In addition, weed interference up to the 14-leaf stage of corn development impeded leaf expansion and emergence in 1989.
Publication Year: 1992
Publication Date: 1992-09-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 415
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot