نتایج جستجو برای: over sowing

تعداد نتایج: 1141772  

2017
Kaur Harpreet

Among various environmental stresses, salt stress is an extensively damaging to major crops all over the world. A set of experiments was conducted to examine the role of 28-homobrassinolide on growth and photosynthetic pigments of salt tolerant Brassica juncea cultivar RLC-1 under control or saline conditions i.e., 0 or 180 mM of NaCl. Surface sterilized seeds of B. juncea were given pre-sowing...

2001
Hans-Werner Sehring Rainer Müller Patrick Hupe Joachim W. Schmidt

Large-scale community-based content management requires “good” domain abstractions and, therefore, a serious investment into application ontology. In an interdisciplinary project with our Art History colleagues who are working in the subject domain of “Political Iconography” we are gaining substantial insight into their subject-oriented working (SOWing) modes and into initial requirements for a...

2018
Longgang Zhao Zhongzhi Han Jinzhong Yang Hua Qi

In order to test the feasibility of computer simulation in field maize planting, the selection of the method of single seed precise sowing in maize is studied based on the quadratic function model Y = A×(D-Dm)2+Ym, which depicts the relationship between maize yield and planting density. And the advantages and disadvantages of the two planting methods under the condition of single seed sowing ar...

1999
Theib Oweis Mustafa Pala John Ryan

In the Mediterranean zone, efforts to optimize combinations of supplemental irrigation (SI ), improved varieties, nitrogen (N ) and sowing dates aim to improve and stabilize cereal yields and maintain quality, especially for durum wheat. Thus, a 4 year field study (1992/1993 to 1995/1996) on a deep clay soil in northern Syria assessed the impact of SI (rain-fed, 1/3, 2/3 and full SI ) combined ...

2016
Emanuela W. A. Weidlich Philipp von Gillhaussen Benjamin M. Delory Stephan Blossfeld Hendrik Poorter Vicky M. Temperton

Diversity of species and order of arrival can have strong effects on ecosystem functioning and community composition, but these two have rarely been explicitly combined in experimental setups. We measured the effects of both species diversity and order of arrival on ecosystem function and community composition in a grassland field experiment, thus combining biodiversity and assembly approaches....

2014
Carrie A. Eberle Frank Forcella Russ Gesch Sharon Weyers Dean Peterson James Eklund

Echium (Echium plantagineum L.) is an alternative oilseed crop in summer-wet temperate regions that provides floral resources to pollinators. Its seed oil is rich in omega-3 fatty acids, such as stearidonic acid, which is desired highly by the cosmetic industry. Seeds were sown in field plots over three years in western Minnesota in spring (early-sown) or early summer (late-sown), and flower ab...

ژورنال: علوم آب و خاک 1998
ثباتی, احمد , هاشمی دزفولی, ابوالحسن ,

Growth and grain yield of irrigated barley cultivars (Valfajr, Binam and Raihaneh) was investigated at 4 sowing dates (6, 22 Oct. and 14, 20 Nov.) in Karaj region. The effect of sowing date, genotype and their interaction on grain yield were statistically significant. Early and late sowing enhanced cold damage. However, the damage was more in late sowings. It was estimated that the optimum sowi...

2017
Klaus Sieling Henning Kage

In northern Europe, replacing winter barley with winter wheat as the preceding crop for winter oilseed rape (Brassica napus L.; WOSR) often results in a delayed WOSR sowing and poor autumn growth. Based on data from a field experiment running in 2009/2010, 2010/2011, and 2012/2013, this study aims (i) to investigate how a delayed sowing method affects seed yield, N offtake with the seeds, and a...

عدالت, محسن, نادری, روح‌اله,

In order to evaluate the effect of sowing date and cultivar on accumulated heat unit, phenology and yield of maize (Zea mays L.), a two-year field study was carried out at the Agricultural Research Station of College of Agriculture, Shiraz University, Shiraz, Iran. Treatments consisted of five maize hybrids (SC704, Hido, BC677, BC666 and NS540) and five planting dates (May 15, June 1, June15, J...

2015
Mukhtar Ahmed Fayyaz-ul-Hassan

The unpredictability and large fluctuation of the climatic conditions in rainfed regions do affect spring wheat yield and grain quality. These variations offer the opportunity for the production of better quality wheat. The effect of variable years, locations and sowing managements on wheat grain yield and quality was studied through field experiments using three genotypes, three locations for ...

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