نتایج جستجو برای: dry land wheat
تعداد نتایج: 258839 فیلتر نتایج به سال:
The effect of water stress induced by NaCl or drought stress was studied on the leaves of wheat, barley, kidney bean and mung bean. After 25 days old, iso-osmotic stresses (200 mM) NaCl and PEG 6000 (180 g 1 ) were applied for 3 weeks old plants. Decreasing leaf dry weight was similar in -1 barley, kidney bean and mung bean under both stresses, while leaf dry weight of wheat decreased more unde...
Inter-annual crop yield variation is driven in large parts by climate variability, wherein the climate components of temperature and precipitation often play the biggest role. Nonlinear effects of temperature on yield as well as interactions among the climate variables have to be considered. Links between climate and crop yield variability have been previously studied, both globally and at regi...
Intensive land use reduces the diversity and abundance of many soil biota, with consequences for the processes that they govern and the ecosystem services that these processes underpin. Relationships between soil biota and ecosystem processes have mostly been found in laboratory experiments and rarely are found in the field. Here, we quantified, across four countries of contrasting climatic and...
long term use of fallow in wheat-based cropping system of dry and semi-dry lands can increase erosion and decrease soil fertility. legumes as substituting crops for fallow could improve sustainability in this area. this study was conducted to evaluate the substituting of some legumes for fallow in a 2-yr wheat rotation at research stations in north khorasan province (natural resources research ...
each plant component (Klepper et al., 1983; Wilhelm and McMaster, 1996), researchers can now communiKnowledge of N and assimilate partitioning in wheat (Triticum cate with greater detail and precision about phenomena aestivum L.) improves management efficacy and crop model development. Our purpose was to describe N and dry matter distribution occurring during wheat growth and development. The d...
The salt–affected lands in arid regions of central Iran are characterized by low rainfall, low fertility, high evaporation and salinity. The cultivation of salt–affected lands may have a major influence on soil quality. The aim of this study was to determine the response of soil quality indicators to reclamation and cultivation of salt–affected lands occurring in Abarkooh plain, central Iran. S...
Effects of level of broiler litter in diets containing wheat straw on performance of Alpine doelings
Residues from cereal grain production are important feedstuffs for ruminants throughout the world. They are, however, low in protein and high in fiber, which limit feed intake and digestibility. The nutritive value of cereal crop residues can be improved by various processing methods, such as treatment with alkalis like sodium hydroxide or ammonia. Another means of improving nutritive value of ...
Salinity stress is an important challenge for wheat production in the world. Plant growth promoting rhizosphere bacteria, isolated from halophytic plants, can increase the tolerance of crop plants to salinity by direct and indirect mechanisms. In this study, plant growth-promoting traits of bacterial strains (Bacillus safensis, Bacillus pumilus and Zhihengliuella halotolerans), isolated from th...
in this study, the comparative advantage of main agricultural products and its relation to cropping pattern was studied in ilam province. for data analyzing the comparative advantage and government policies effects indices, policy analysis matrix (pam) were used. the obtained results for the comparative advantage indices of domestic resource cost (drc), social cost benefit (scb) and net social ...
the dominant agricultural land uses are included of wheat farming in the kermanshah providence in the northwest of iran. the objective of this paper is analyzing of topoclimatic zonning of the wheat dry farming areas based on overlying the climatic and topographic character tics. to achieve the exact date of stages of rain-fed wheat growing in different areas of the province, the degree-days te...
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