دورية أكاديمية
Effect of Nitrogen Fertilizer and Irrigation Levels on Yield and Some Physiological Traits of Wheat under Drip Irrigation
| العنوان: | Effect of Nitrogen Fertilizer and Irrigation Levels on Yield and Some Physiological Traits of Wheat under Drip Irrigation |
|---|---|
| المؤلفون: | P Shokati, A Siosemardeh, F Hosseinpanahi, P Fathi |
| المصدر: | پژوهشهای زراعی ایران, Vol 20, Iss 1, Pp 45-63 (2022) |
| بيانات النشر: | Ferdowsi University of Mashhad, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Plant culture LCC:Agriculture (General) |
| مصطلحات موضوعية: | chlorophyll, nitrogen use efficiency, protein percent, remobilization, water use efficiency, Plant culture, SB1-1110, Agriculture (General), S1-972 |
| الوصف: | IntroductionWheat is globally one of the most critical cereals. It is necessary to increase its yield to cope with the increasing population through management improvement or breeding due to decreased arable lands. Soil moisture before planting and rainfall during the growing season are the two primary water supply sources for rainfed wheat production. However, the non-uniform distribution of rainfall during the growing season leads to drought, affecting crop water consumption and natural wheat growth. Irrigation is the primary way to meet the plant's water requirement for growth, development, and high yield. Since water availability is limited in Iran and on the other hand, different cultivars have different sensitivities to drought stress at various stages of growth, so reducing different degrees of water consumption may have unequal effects on crop yield. This type of management, known as deficit-irrigation, often increases water use efficiency. Drip irrigation provides optimized use of water and nutrients during the growing season. In addition to water consumption, the balanced application of fertilizers is an influential factor in increasing agricultural production, and nitrogen is the most critical fertilizer recommended to improve wheat yield. Nitrogen can increase wheat yield by increasing the number of spikes per square meter, the number of grains per spike, and 1000-grain weight. This study aims to determine the optimum water consumption and nitrogen fertilizer under the drip irrigation system according to wheat physiological traits.Materials and MethodsThis experiment was performed as split plot based on a randomized complete block design with three replications in the Research Farm of the University of Kurdistan located in the Dehgolan plain in 2018-19 cropping year. Factors were in various irrigation levels (60, 80, 100, and 120% of crop water requirement) as the main plots and nitrogen fertilizer treatments (fertilizer application of 50, 75, 100, and 125% of plant nitrogen requirement based on soil test) as subplots. Sampling was done in all three replications to calculate soil weight moisture and determine the irrigation water requirement in each irrigation stage. The soil moisture balance method was used to determine the crop's water requirement according to the volume percentage of moisture in the control plot (treatment of providing 100% water requirement). Based on the soil test results, the optimal nitrogen application in the control treatment was considered equivalent to 200 kg.ha-1 of urea. Other experimental treatments were calculated based on the control treatment. In this experiment, traits such as biological yield, grain yield, harvest index, water use efficiency (WUE), chlorophyll content (chlorophyll a, chlorophyll b, and total chlorophyll), remobilization, grain protein content, protein percent, and agronomic nitrogen use efficiency (ANUE) were evaluated. Data were analyzed using SAS statistical software, and the means were compared using Duncan's multiple range test at 5% probability.Results and DiscussionThe results showed that the effects of different irrigation and nitrogen levels were significant on biological yield, grain yield (P |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | Persian |
| تدمد: | 2008-1472 2423-3978 |
| العلاقة: | https://jcesc.um.ac.ir/article_41407_f413ef4f2f85bc8dede52c90ada4d492.pdfTest; https://doaj.org/toc/2008-1472Test; https://doaj.org/toc/2423-3978Test |
| DOI: | 10.22067/jcesc.2021.69378.1035 |
| الوصول الحر: | https://doaj.org/article/57cea566976a404fbf1d39936d6f86dcTest |
| رقم الانضمام: | edsdoj.57cea566976a404fbf1d39936d6f86dc |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 20081472 24233978 |
|---|---|
| DOI: | 10.22067/jcesc.2021.69378.1035 |