Ecophysiology of corn(Zea mays L.)competition with [Common lambsquarters( Chenopodium album L.)] and [Redroot pigweed (Amaranthus retroflexus L.)] weeds under low input and high input conditions.
2005
Zand, Eskandar, Iranian Research Institute of Plant Protection
During 2002-2003, a field trail was conducted at Karaj Weed Research Station, Plant pests ; diseases Research Institute, Iran. The experiments were carried out in split factorial design with four replicates. Irrigation with 7 and 14 days interval was mail plot and two level of nitrogen application, including recommended and 50% of recommended, and the interaction of corn with weeds on sowing rows were considered as factorial treatment in sub plot. Corn and weed interaction were: Corn alone, 15 plant of redroot pigweed, 15 plant of lambs-quarters, corn+15 plant of redroot pigweed, corn+15 plant of lambs-quarters and corn+7.5 plant of redroot pigweed +7.5 plant of lambs-quarters, all per meter. Analysis of data showed that planting corn alone resulted to the highest yield. Competition of redroot pigweed with corn was higher than of lambs-quarters. Interference of both weeds together with corn at lower application rate of N-fertilizer and shorter interval of irrigation, resulted in the lowest yield. Taken together, the results indicate that in fertile condition, these weeds grow better and achieve higher competition potential.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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