Investigating the amount of fodder yield and nutrient content of Maxima hybrid corn under the application of biological and chemical nitrogen fertilizers under the conditions of irrigation restriction in Arak
Subject Areas :
علیرضا
Dadiyan
1
(Associate prof)
Keywords: Maize, nitrogen, Forage yield, Nitroxin, Dehydration Stress,
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 2015 and 2016 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 in such a way 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 control treatment levels, consumption of 0.5 and one liter of nitroxin per 30 kg of seeds consumed and nitrogen at three control levels, consumption of 125 and 250 Kilogram of nitrogen per hectare which was provided through 46% urea fertilizer. The results of the research showed 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 the test, the aforementioned traits increased. The effect of irrigation on dry fodder yield, the amount of phosphorus and raw ash of fodder was significant, and the aforementioned traits increased under optimal irrigation conditions. Nitroxine treatment also showed a significant effect on experimental traits and with increasing the amount of nitroxine consumption, experimental traits increased in most cases. The mutual effect of irrigation and nitroxine on all the measured traits was significant, and with the application of one liter of nitroxine under normal 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 showed an increase in traits. The interaction effect of irrigation and nitrogen was significant on all studied traits except for dry fodder yield, so that the highest amount of the aforementioned traits was obtained from the consumption of 250 kg of nitrogen under normal irrigation conditions. The mutual effect of nitroxine and nitrogen on the experimental traits was significant, so that their highest average was obtained by consuming one liter of nitroxine together with 125 kg of nitrogen. The interaction effect of all three treatments on all desired traits was significant, so that the highest amount of experimental traits was obtained under the conditions of consumption of one liter of nitroxine combined with 125 kg of nitrogen under optimal irrigation conditions.
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