Document Type : Original Article
Authors
1
MSc. Student of Department of Weed Science, Islamic Azad University of Ghaemshahr, Ghaemshahr, Iran
2
Assistant Professor, Department of Agronomy, Sari Agricultural Sciences and Natural Resources University
3
Assistant Professor, Department of Agronomy and Plant Breeding, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
4
MSc. Student of Department of Agronomy, Sari Agricultural Sciences and Natural Resources University
Abstract
Zahra Shakibafar1, Faezeh Zaefrian2*, Mohammad Rezvani3, Milad Bagheri Shirvan4
1-MSc. Student of Department of Weed Science, Islamic Azad University of Ghaemshahr, Ghaemshahr, Iran
2-Assistant Professor, Department of Agronomy, Sari Agricultural Sciences and Natural Resources University
3- Assistant Professor, Department of Agronomy and Plant Breeding, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
4-MSc. Student of Department of Agronomy, Sari Agricultural Sciences and Natural Resources University
*Corresponding Author: fa_zaefarian@yahoo.com
Received: 2014.02.04 Accepted: 2014.09.05
Abstract
In order to assessment the weed biomass, yield and yield components of maize under presence of soybean, bean and clover as cover crops an experiment was performed in randomized complete block design with 8 treatments and 3 replications in Sari agricultural sciences and natural resources university in 2011. Treatments were included the planting of cover crops at the same date and 21 days after planting with maize and sole cropping of maize under weed control and weed infestation. The results showed that soybean in first and second planting date reduced the weed biomass 98.96 and 98.36%, and bean in first and second planting date reduced the weed biomass 97.56 and 97.59% compared to sole cropping of maize under weed interference, respectively. Whereas, the clover in both planting date were less success in weed control. Moreover, the maximum of rows in ear, seed in ear row of maize was observed in sole cropping of maize under weed control and there was no significant difference between sole cropping of maize under weed control and first and second planting date of soybean and second planting date of bean. Except of first planting date of clover and sole cropping of maize under weed infestation, differences in thousand kernel weight of maize were not significant in other treatments. Maximum maize yield (10741 Kg/ha) was achieved in sole cropping of maize under weed control, which was not significantly different with first and second planting date of soybean. In cover crop treatments, the lowest yield and yield components of maize was recorded in clover treatments. In general, soybean reduced the weed biomass and the seed yield of maize under presence of soybean was higher than other cover crops.
Keywords
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