The effect of planting density and nitrogen levels on yield and yield components of Maize S.C.704
Subject Areas : Crop Production Research
1 - Department of Agronomy and Plant Breeding, Lahijan Branch, Islamic Azad University, Lahijan, Iran.
Keywords: Biological yield, Chemical fertilizer, Maize ,
Abstract :
One of the factors affecting the yield of plants is plant density and fertilizer consumption per unit area. In order to study the effect of crop density and different levels of nitrogen on yield and yield components of corn, a split plot design was used in a completely randomized block design with three replications in Langrood, Guilan province in 2016. The main factor was plant density at three levels of 166000, 111000 and 83000 plants per hectare and the minor factor was nitrogen application at four levels of 0, 45, 90 and 135 kg N ha-1. The results showed that nitrogen fertilizer and plant density effects on plant height, row number per ear, single grain weight, biological yield and grain yield had a significant effect. The interaction between nitrogen fertilizer and plant density per plant height, number of seeds per maize, ear length, biological yield and grain yield had a significant effect. The highest 100 seed weight was obtained at a density of 111000 plants per hectare and 135 kg of nitrogen fertilizer with an average of 43g. The highest biological yield (19680 kg.ha-1) was observed in 111000 plants per ha and 90 kg N ha-1 application. The maximum grain yield was obtained at 83000 plants per ha and 135 kg N ha-1 with 9459 kg ha-1. According to the results of this study, it can be suggested that the density of 83000 plants per hectare, using 135 kg N ha-1 as the most suitable treatment for the studied area.