Investigating the fodder yield and nutrient content of Maxima Corn hybrid under biological and chemical nitrogen fertilizers application in limited irrigation conditions of Arak
Subject Areas : Crop Production Research
1 - Member of faculty Department of Agronomy, Islamic Azad University Farahan branch, Farahan, Iran
Keywords: Corn, Drought stress, Fodder yield, Nitrogen, Nitroxin ,
Abstract :
In order to investigate the use of biological and chemical nitrogen fertilizers in the conditions of limited water resources, a research was conducted in Arak during the crop years of 2016 and 2017 on the content of nutrients stored in the dry fodder of Maxima hybrid corn. This experiment was done in the form of a split-split plot and in the form of a basic design of randomized complete blocks in four replications, so that the irrigation levels were placed in the main plot and the nitroxin and nitrogen levels were placed in the sub-plots. The investigated treatments were irrigation at two common irrigation levels and applying water restriction, nitroxin at three levels of the control treatment, consumption of 0.5 and one liter of nitroxin per 30 kg of seeds consumed and nitrogen at three levels including the control treatment, consumption of 125 and 250 kg of nitrogen per hectare provided through 46% urea fertilizer. It was concluded that the effect of the year on the amount of nitrogen, protein and raw ash of fodder was significant and in the second year of testing the mentioned traits increased. The effect of irrigation factor on the yield of dry fodder, the amount of phosphorus and raw ash of fodder was significant, and the aforementioned traits increased under favorable irrigation conditions. Nitroxin treatment also showed a significant effect on experimental traits and with increasing the amount of nitroxin consumption, experimental traits often increased. The mutual effect of irrigation and nitroxin on all the measured traits was significant, and with the application of one liter of nitroxin under common irrigation conditions, the highest amount of these traits was obtained. In the conditions of applying irrigation restrictions, the use of 1 liter of nitroxin compared to the use of 0.5 liters and also the treatment without the use of nitroxin resulted in an increase in traits. The mutual effect of irrigation and nitrogen on all studied traits was significant except for dry fodder yield, so that the highest amount of these traits was obtained from the consumption of 250 kg of nitrogen under conventional irrigation conditions. The interaction effect of nitroxin and nitrogen on experimental traits was significant, so that the highest average of them was obtained by consuming one liter of nitroxin together with 125 kg of nitrogen. The interaction effect of all three treatments on all desired traits was significant, and in this regard, the highest amount of experimental traits was obtained as a result of consuming one liter of nitroxin with 125 kg of nitrogen under favorable irrigation conditions.
