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Tolerance And Velvetleaf (Abutilon Theophrasti) Suppressive Ability Of Two Old And Two Modern Corn (Zea Mays) Hybrids, John L. Lindquist, David A. Mortensen
Tolerance And Velvetleaf (Abutilon Theophrasti) Suppressive Ability Of Two Old And Two Modern Corn (Zea Mays) Hybrids, John L. Lindquist, David A. Mortensen
Department of Agronomy and Horticulture: Faculty Publications
Improved crop tolerance and weed suppressive ability are tactics that may reduce the negative effect of weeds on crop yield. Irrigated field experiments were conducted to compare leaf area index (LAI), intercepted photosynthetic photon flux (PPF), and relative tolerance and velvetleaf suppressive ability among two old (circa1 940) and two modern corn hybrids. Each hybrid was grown in monoculture and in mixture with velvetleaf at 1, 4, 16, and 40 plants m-1 row. Plants were periodically harvested in monoculture plots to obtain estimates of corn LAI, and PPF interception was measured. Variation in hybrid tolerance to velvetleaf competition for …