Improving Quantitative and Qualitative Characteristics of Wheat (Triticum aestivum L.) through Nitrogen Application under Semiarid Conditions  

作　　者：Muhammad Rafiq Muhammad Saqib Husnain Jawad Talha Javed Sadam Hussain Muhammad Arif Baber Ali Muhammad Sultan Ali Bazmi Ghulam Abbas Marjan Aziz Mohammad Khalid Al-Sadoon Aneela Gulnaz Sobhi F.Lamlom Muhammad Azeem Sabir Jameel Akhtar 

机构地区：[1]Agronomic Research Institute,Ayub Agricultural Research Institute,Faisalabad,38850,Pakistan [2]Depertment of Agronomy,University of Agriculture,Faisalabad,38040,Pakistan [3]Department of Agronomy,Northwest A&F University,Yangling,712100,China [4]Department of Plant Sciences,Quaid-i-Azam University,Islamabad,45320,Pakistan [5]Fodder Research Institute Sargodha,Sargodha,40100,Pakistan [6]Department of Agricultural Engineering,Barani Agricultural Research Institute,Chakwal,48800,Pakistan [7]Department of Zoology,College of Science,King Saud University,Riyadh,11451,Saudi Arabia [8]Department of Biotechnology,Yeungnam University,Gyeongbuk,38641,Korea [9]Plant Production Department,Faculty of Agriculture Saba Basha,Alexandria University,Alexandria,21531,Egypt [10]Department of Forestry,Range and Wildlife Management,The Islamia University of Bahawalpur,Bahawalpur,63100,Pakistan

出　　处：《Phyton-International Journal of Experimental Botany》2023年第4期1001-1017,共17页国际实验植物学杂志（英文）

基　　金：the Researchers Supporting Project No.(RSP2023R410),King Saud University,Riyadh,Saudi Arabia.

摘　　要：Nitrogen(N),the building block of plant proteins and enzymes,is an essential macronutrient for plant functions.A field experiment was conducted to investigate the impact of different N application rates(28,57,85,114,142,171,and 200 kg ha^(−1))on the performance of spring wheat(cv.Ujala-2016)during the 2017–2018 and 2018–2019 growing seasons.A control without N application was kept for comparison.Two years mean data showed optimum seed yield(5,461.3 kg ha^(−1))for N-application at 142 kg ha^(−1) whereas application of lower and higher rates of N did not result in significant and economically higher seed yield.A higher seed yield was obtained in the 2017–2018(5,595 kg ha^(−1))than in the 2018–2019(5,328 kg ha^(−1))growing seasons under an N application of 142 kg ha^(−1).It was attributed to the greater number of growing degree days in the first(1,942.35°C days)than in the second year(1,813.75°C).Higher rates of N(171 and 200 kg ha^(−1))than 142 kg ha^(−1) produced more number of tillers(i.e.,948,300 and 666,650 ha^(−1),respectively).However,this increase did not contribute in achieving higher yields.Application of 142,171,and 200 kg ha^(−1) resulted in 14.15%,15.0%and 15.35%grain protein concentrations in comparison to 13.15%with the application of 114 kg ha^(−1).It is concluded that the application of N at 142 kg ha^(−1) could be beneficial for attaining higher grain yields and protein concentrations of wheat cultivar Ujala-2016.

关 键 词：Economical yield growing degree days nitrogen Ujala-2016 WHEAT 

分 类 号：S512.1[农业科学—作物学]