Different sowing dates affected cotton yield and yield components
This study was conducted to determine whether selecting an optimum sowing date couldimprove yield. The experiment consisted of sowing a film-covered, drip-irrigated cotton field onfour sowing dates from April to May in 2011-2012 at the Agrometeorological ExperimentalStation of Wulanwusu, which was in an arid region of north-western China. Late sowing datesproduced less yield and water-use efficiency than did the normal sowing dates. The yieldincreased with the increases of mean diurnal temperature range (DTR) from full bloom tomaturity, mean temperature and sunshine hours (SH) during the whole growing season (WGS),accumulated temperature (AT) and days from squaring to anthesis and mean temperature duringthe reproductive growth stage. However, the main effect factors of meteorological parameterswere AT from squaring to anthesis, mean temperature during the WGS and AT from sowing toemergence. The main effect factors of yield component were boll number per plant, gin turnoutand boll weight. Boll number per plant suffered from mean DTR from boll setting to maturityand SH during the WGS. Gin turnout was affected by mean temperature during the WGS andmean DTR from boll setting to maturity. Sowing date, year and their interactions allsignificantly affected the yield. Sowing date was an important factor affecting the yield andreproductive duration. With climate change, an earlier planting date might be an efficientmethod of increasing yield.
The Response of Morphology, Yield and Yield Components of Spring Safflower Genotypes to Different Sowing Dates
In order to study the response of morphology, yield and yield components of spring safflower (Carthamus tinctorious L.) cultivars to different sowing dates, an experiment was carried out using a split-plot design on the basis of a randomized complete block design with four replications, in Agricultural Sciences and Natural Resources University of Khouzestan, south-west of Iran at 2016-2017. Exp...متن کامل
Responses of Calyx Phytochemical Characteristic, Yield and Yield Components of Roselle (Hibiscus sabdariffa L.) to Different Sowing Dates and Densities
In order to evaluate the effects of sowing date and intra rows spacing on yield, yield components and some phytochemical characteristics in Roselle, a field experiment was conducted as a split plot layout based on randomized complete block design with three replications in 2013 and 2014 growing seasons. Five sowing dates were considered as the main plots (11th and 30th of March, 14th of April, ...متن کامل
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...
The Effects of Sowing Dates and Densities on Yield and Yield Components of Coriander(Coriandrum sativum L.)
Sowing date and density are two important factors in produce of coriander. A field experiment was conducted with treatments: sowing time (5 May, 20 May, 4 June and 19 June 2009) and plant density (10, 30, 50 and 70 plants m). The experimental plots were laid out in a factorial according to a RCBD with three replications. Results showed that the effect of sowing dates and densities were signific...متن کامل
Casual explanation of the relationships between seed yield and some yield components in cumin (Cuminum cyminum L.) by different multivariate statistical analysis at different sowing dates
Cumin (Cuminum cyminum L.) is one of the most important cultivable medicinal plants in Iran and today, it is the second most popular spice in the world after black pepper. It is essential to know the relationships between yield and its components in cumin breeding programs. Therefore, different multivariate statistical analysis was performed on plant characters in cumin to determine th...متن کامل
priming is one of the seed enhancement methods that might be resulted in increased seed performance (germination and emergence). the objective of this research was to evaluate effect of priming on seed emergence and yield under wide ranges sowing dates in cotton. treatments were combinations of 6 sowing dates and 2 seed treatments (control and primed seeds). hydropriming method was used; seeds ...متن کامل
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دوره 10 شماره 1
صفحات 63- 83
تاریخ انتشار 2016-01-01
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