Response of Growth and Productivity of Wheat Cultivars (Triticum aestivum L.) to Nano -N and Urea Fertilizer

Abstract

Field experiment ware carried out at the Agricultural Research Station of Basrah University College of Agriculture, north of Basra governorate during the winter seasons of 2020/2021 and 2021/2022 to study the growth and yield of three cultivars of wheat (IPA99, BANGIL and JAAD) urea- nitrogen applied at four rate (0,60,120 and 180)kg ha-1 as comported Nano-N applied at three rate (0, 15 and 30) L ha-1. The experiment was designed as factorial randomized complete design (R.C.B.D)with three replicates. A flag leaf area, number spikes in m2, number grian per spike and grain yield parameters were recorded. The results of the study showed no significant difference in all studied growth parameters, yield components and yield Between sources of nitrogen fertilizer (urea and nano), however the cultivars were differed significantly in the studied parameters, as growth parameter of flag leaf area, number of spikes in m2, number of grains per spike and grain yield of JAAD cultivar were higher than those of other cultivar IPA99 AND BANGIL for both growing seasons. Increasing the level of nitrogen rate for both urea and nano sources an increased all studied parameters for both seasons. Application of 180 kg N ha-1 and 30 L ha-1 resulted the highest average of flag leaf area, number of spikes in m2, number of grains per spike, and weight of 1000 grain and grain yield for study seasons. The interaction treatment between JAAD cultivar and the 180 kg N ha-1 level of urea fertilizer and the 30 liter ha-1 of nano- source resulted highest flag leaf area, number of spikes, number of grains per spike and grain yield. However the interaction treatment between Ibaa99 cultivar and the level of 180 kg N ha-1 urea and 30 L ha-1 nano, showed the highest weight of 1000 grain. lowest of flag leaf area, number of spikes in m2, number of grains per spike and grain yield, were recorded at the interaction between BANGIL cultivar and the control treatment for both urea and nano fertilizer sources for both seasons.