investigation of the effects of different irrigation water and nitrogen regimes on cotton yield and yield component under furrow and sprinkler irrigation methods
irrigation water and nitrogen fertilizer are two important factors in increasing the yield and yield components of cotton. in order to evaluate effects of irrigation methods, various levels of water and nitrogen fertilizer on yield and yield components of cotton were studied at hashemabad cotton research station of gorgan in 2008. the experiment was conducted in split-split plots design with three replications. furrow and sprinkler methods were main plots, various levels of irrigation water 0%, 33%, 66%, 100% and 133% of water requirement were subplots plots and various levels of nitrogen fertilizer 0%, 33%, 66%, 100% and 133% of recommended fertilization were sub-sub. the results showed that the effect of irrigation methods were significant on boll weight, seed index, number of seed per boll and lint index but without significant on yield and lint yield. the yield were influenced by various levels of irrigation water and the results showed that the highest yield 1996/60 was obtained in treatment 66% of irrigation water. levels of irrigation water significantly affected on the entire yield components of cotton except the number of seed per boll. it was also found that the effect of various levels of nitrogen fertilizer showed significant difference on yield, boll and lint yield. the results revealed that yield and lint yield didn’t have significant difference between treatments 133% and 33%, 66%, 100% of various levels of nitrogen fertilizer.
effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars
این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...
Alfalfa Water Use and Yield under Different Sprinkler Irrigation Regimes in North Arid Regions of China
Alfalfa (Medicago sativa) is one of the major crops grown in Northern China in recent years, however, the current serious water shortage conditions present a challenge to the growth of this crop, especially if efficient use of water is considered in forage production for sustainability. This study aimed to evaluate alfalfa productivity and water use efficiency (WUE) under different sprinkler ir...متن کامل
ABSTRACT- Maize production, which is ranked after wheat and barely in Fars province, Iran, needs a considerable amount of irrigation water that is not available in scarce water conditions in drought situations. Therefore, proper planting method can improve irrigation water management. The objectives of the present study were to investigate the effects of two planting methods, on-bed and in furr...متن کامل
Potato grown for early or off-season production plays a crucial role in the economy of several areas in the Mediterranean countries. Irrigation is important for determining yield and earliness, thus a better investigation of plant response under various pedo-climatic conditions can help to improve resource use efficiency and farmer income. A two-year field research (2009-2010) was carried o...متن کامل
In surface irrigation, the soil serves as a medium for infiltration and conveying water from upstream to the downstream end of a field. In this study, infiltration properties of the Sibaya (Si) soil series (Glenrosa in the South African soil classification system) were determined by a volume balance method using a two-point approach technique. The purpose of the study was to examine the effect ...متن کامل