نتایج جستجو برای: rainfed

تعداد نتایج: 2676  

Journal: :Environmental science & technology 2013
Mark D Staples Hakan Olcay Robert Malina Parthsarathi Trivedi Matthew N Pearlson Kenneth Strzepek Sergey V Paltsev Christoph Wollersheim Steven R H Barrett

Middle distillate (MD) transportation fuels, including diesel and jet fuel, make up almost 30% of liquid fuel consumption in the United States. Alternative drop-in MD and biodiesel could potentially reduce dependence on crude oil and the greenhouse gas intensity of transportation. However, the water and land resource requirements of these novel fuel production technologies must be better unders...

Journal: :IOP Conference Series: Earth and Environmental Science 2021

Journal: :International Journal of Chemical Studies 2020

2014
Bishnu Bilas Adhikari Biswarup Mehera Stephan Haefele

To help farmers in the mid hills of Nepal improve their crop management and rice yields, we conducted a study testing different nursery management options and their effect on grain yield and yield components under rainfed conditions. The experiment was conducted in a farmer’s field during the cropping season 2009 and 2010 at Sundarbazar, Lamjung, Nepal, using a 3-factor factorial RCB design wit...

2014
Shalabh Dixit B. Emma Huang Ma. Teresa Sta Cruz Paul T. Maturan Jhon Christian E. Ontoy Arvind Kumar Keqiang Wu

BACKGROUND The coupling of biotic and abiotic stresses leads to high yield losses in rainfed rice (Oryza sativa L.) growing areas. While several studies target these stresses independently, breeding strategies to combat multiple stresses seldom exist. This study reports an integrated strategy that combines QTL mapping and phenotypic selection to develop rice lines with high grain yield (GY) und...

2009
M. INAM-UL-HAQ N. JAVED M. AHSAN KHAN M. J. JASKANI S. R. GOWEN

It has been observed in the present study that when spores of Trichoderma harzianum (Th-2) isolate were applied in the sandy clay loam soil and continuously incubated for 4 months at 25C and 35C and at three water potentials, -0.03 MPa, -0.3 MPa and <-50 MPa, it has resulted in significantly reduced (P<0.05), growth of Fusarium oxysporum ciceri (Foc) on branches of chickpea plant. The pathogen ...

2003
R. L. Kruska R. S. Reid P. K. Thornton N. Henninger P. M. Kristjanson

Questions as to whether public investment in international agricultural research is a ‘Good Thing’ or not may best be addressed using two arguments: (1) justifications based on whether or not past investments have yielded substantial benefits to societies and the resource-poor; and (2) that future investments need to be made as effectively and efficiently as possible, which means they must be t...

2011
Guihua Chen Ray R. Weil

The yield of rainfed crops is commonly limited by the availability of soil water during the summer growing season. Channels produced by cover crop roots in fall/winter when soils are relatively moist may facilitate the penetration of compacted soils by subsequent crop roots in summer when soils are relatively dry and hard. Our objective was to determine the effects of fall cover crops on maize ...

Journal: :پژوهش های تولید گیاهی 0

in order to study stress tolerance indices and identifying tolerance genotypes to drought stress condition 16 genotypes of durum wheat were assessed in a randomized complete block design with four replications under two irrigated and rainfed conditions in the research station located in west of iran ilam in 2006- 2007. results showed that variation in among durum wheat genotypes under irrigated...

Journal: :حفاظت گیاهان 0
شایلین لطفی مجید رحیمی زاده

in order to evaluate the response of russian knapweed seeds to cardinal temperatures a factorial experiment was conducted base on completely randomized design with 3 replications. russian knapweed seeds (collected from irrigated and rainfed wheat fields), and germination temperatures (constant temperatures of 10, 15, 20, 25, 30 and 35° c) were used as first and second levels of the experiment. ...

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