Effect of nitrogen levels, cultivator and simultaneous cropping on yield and yield components of corn
Subject Areas :
Farzad Ameri
1
(M.Sc Student in Agronomy, Naragh Branch, Islamic Azad University, Naragh, Iran)
Mohammad Mirzakhani
2
(Assistant Professor, Department of Agriculture, Farahan Branch, Islamic Azad University, Farahan, Iran.)
Rogie AminianDehkordi
3
(Assistant Professor, Department of Agriculture, Imam Khomeini International University, Qazvin, Iran.)
Keywords: Urea, soybean, Legumes, Cob yield,
Abstract :
In order to evaluation of effect of nitrogen levels, cultivator and simultaneous cropping on yield and yield components of corn. A factorial randomized complete block design with three replications was used. Urea manure levels [N0= without urea (Control), N1= 150 Kg ha-1 of urea, N2= 300 Kg ha-1 of urea) and simultaneous cropping treatment, (S1= cultivation of corn, S2= cultivation of corn + cultivator application, S3= cultivation of corn + cultivator application + soybean, S4= cultivation of corn + cultivator application + cowpea, S5= cultivation of corn + cultivator application + alfalfa) were assigned in plots. Each sub plot consisted of 4 rows, 6 m long with 60 cm between rows space and 20 cm between plants on the rows and S.C 704 hybrid was used. The result have shown that the interaction effect of urea levels and simultaneous cropping + cultivator application treatment was significant on weight of thousand grains, weight of cob and husk, number of grain per row, grain yield, number of green leaf and plant height. The maximum and minimum of grain yield (6342.33 and 2009 kg ha-1) were obtained with the cultivation of corn + 150 Kg ha-1 of urea and cultivation of corn + 0 Kg ha-1 of urea manure, respectively. The highest and lowest of number of grain per row (42.79 and 27.16) were obtained with the (cultivation of corn + cowpea + cultivator application 150 Kg ha-1 of urea) and (cultivation of corn + 0 Kg ha-1 of urea manure), too. It seems that supply of plant nutrients to produce of quantity and quality yield is importance. In this experiment, sustainable consumption of nitrogen and the absence of competition between species by using cultivator and remove legumes plants, were obtained the best results.
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