نتایج جستجو برای: 100 cm depth were estimated 27718 kg ha

تعداد نتایج: 3982067  

2015
Imran Khan Fida Mohammad Fahim Ullah Khan

Development of superior crop varieties is the prime objectives of all plant breeding programs. To determine genetic variability, heritability and genetic advance, 24 elite bread wheat lines were planted in randomized complete block design with three replications at the University of Agriculture, Peshawar under rainfed conditions. Data were recorded on days to heading, days to maturity, plant he...

Journal: :Journal of toxicology and environmental health. Part A 2009
M H Bernal K R Solomon G Carrasquilla

The spraying of coca (Erythroxylum coca) with glyphosate (coca mixture, a combination of formulated glyphosate, Glyphos, and an adjuvant, Cosmo-Flux) in Colombia has raised concerns about possible impacts on amphibians. Although acute LC50 for 8 species of Colombian frogs ranged from 1.2 to 2.78 mg acid equivalents (a.e.)/L, these exposures were conducted in the laboratory in the absence of sed...

Journal: :Journal of environmental biology 2010
Gurcan Guleryuz Salih Gucel Munir Ozturk

Interrelations exist in the terrestrial ecosystems between the plant type and characteristics of nutrient uptake. Annual net nitrogen mineralization in soils of different plant communities in the high altitude zone of Spil mountain located in the Mediterranean phytogeographical region of Turkey was investigated throughout one year by field incubation method. Seasonal fluctuations resulting from...

ژورنال: علوم آب و خاک 2013
صفر معروفی, , نصرالدین پارسافر , ,

In this research, we estimated soil shallow depths temperatures using regression methods (Linear and Polynomial). The soil temperatures at soil depths (5, 10, 20, 30, 50 and 100 cm) were correlated with meteorological parameters. For this purpose, temperature data of Hamedan station (in the period 1992-2005) were employed. Soil temperature data were measured on a daily basis at 3 PM, 9 PM and 3...

This study was conducted to determine the optimum planting date and density for a selected population of Behbahan onion for two years. Experiment was conducted as a split factorial based on RCBD design with four replications. Main plots consisted of four planting dates from 6 September to 23 October with 15 day intervals. Sub plots consisted of combinations of three row spaces (20, 30 and 40 cm...

Journal: :چغندرقند 0
حمید نوشاد مربی موسسه تحقیقات چغندرقند رحیم محمدیان دانشیار مؤسسه تحقیقات چغندرقند سمر خیامیم استادیار موسسه تحقیقات چغندرقند فرحناز حمدی کارشناس ارشد موسسه تحقیقات چغندرقند

in order to study the effect of organic fertilizers application on increasing nitrogen efficiency and also quantitative and qualitative characteristics of sugar beet, a series of experiments were performed for two years (2008 and 2009) using three amino acid containing organic fertilizers at motahari research station of sugar beet seed institute (sbsi), karaj, iran. four rates of organic fertil...

2000
M. van den Berg

Summary crop growth models are promising tools for assessing crop yield potentials, but it is necessary to indicate uncertainties in model calculations that result from simplifying assumptions and errors/uncertainties in model input data and parameter values. The present study attempts to do this for soil factors that affect the water balance of land-use systems with sugarcane (Saccharum spp. L...

Journal: :journal of ornamental plants 2015
h. khamooshi n. mohammadian m. saamdaliri z. foroughi

in order to study on effect of plant density and nitrogen on yield and yield components of visia faba (faba bean), the experimental design was implemented by randomized complete block with three replications at 2010- 2011 in lahijan. the experimental factors were three plant density (25×25 cm, 35×35 cm and 45×45 cm) and four nitrogen fertilizer (0, 20, 40, 60 kg ha-1). in this experiment, featu...

Ashenafi Nigussie Aynalem Gebre Belisty Lule

A field experiment was conducted at wondo genet Agriculture research center under irrigated condition to determine the effect of intra and inter-row spacing on growth and yield of Artemisia (Artemisia annua L.) during the two successive seasons of 2013 and 2014. Factorial combinations of four intra-rows (40, 60, 80, 100 cm) and four inter-row plant spacing’s (60, 80, 100, 120 cm) were laid out ...

Ashenafi Nigussie Aynalem Gebre Belisty Lule

A field experiment was conducted at wondo genet Agriculture research center under irrigated condition to determine the effect of intra and inter-row spacing on growth and yield of Artemisia (Artemisia annua L.) during the two successive seasons of 2013 and 2014. Factorial combinations of four intra-rows (40, 60, 80, 100 cm) and four inter-row plant spacing’s (60, 80, 100, 120 cm) were laid out ...

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