Ali sarkhosh; Mohammad Aboutalebian
Abstract
To investigate the effect of on-farm seed priming and different times of nitrogen fertilizer application onmaize Sc 704, an experiment was conducted at Agricultural Research Station, Asadabad- Iran, in 2011 asa factorial in randomized complete block design with three replicates. The first factor was ...
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To investigate the effect of on-farm seed priming and different times of nitrogen fertilizer application onmaize Sc 704, an experiment was conducted at Agricultural Research Station, Asadabad- Iran, in 2011 asa factorial in randomized complete block design with three replicates. The first factor was on-farm seedpriming in 3 levels (prime with tap water, prime with zinc solution and no primed. The second factor wasnitrogen application in 5 levels (without nitrogen application, all nitrogen applied at planting time, 2stages application, 3 stages application and 4 stages application. Results showed that, grain nitrogencontent was highest in zinc solution priming and 4 stages nitrogen application (1.6%). Maximum grainyield was achieved by triple nitrogen stages application and zinc solution priming combination (10796kg/ha) that increased about 77% to no-primed and no-nitrogen treatment. In this experiment, seed primingand splitting of nitrogen application time caused decrease in the harvest index. Priming increasedagronomic nitrogen efficiency, partial factor productivity of nitrogen and recovery efficiency of grainnitrogen 32.7, 19.6, 30% compare with no-primed treat respectively and triple stages nitrogen applicationincreased these indexes 117.6, 23.6, 450% respectively in compare with one stage application of nitrogenfertilizer.