نتایج جستجو برای: agriculture plants
تعداد نتایج: 256333 فیلتر نتایج به سال:
Salinity is a main and common stress which decreases the amount of agriculture products and natural plants in many areas of the world. In this study, the effect of salt stress on three varieties of Lotus corniculatus 'Karaj', 'Jolfa', and 'Ardabil' was investigated. Plants were cultured in hydroponic condition with four NaCl treatments (0, 50, 100, 150 mM). The amounts of proline, glycine betai...
Agriculture in Lorestan Province is based on irrigated and rainfed agriculture, which uses two sources of surface water and groundwater. One of the most important natural hazards affecting the Lorestan Province agriculture is the occurrence of drought and its consequences. The main purpose of this study is to investigate the effects of drought on irrigated agriculture in this province. The data...
This is an attempt, through the review of literature, to understand the history and characteristics of the Indian agriculture sector, its transition from traditional to commercial agriculture and the problems it faces. Modern agricultural practices and the relationship with environmental depletion have also been assessed. The article discusses some of the developmental challenges faced by the I...
On a world basis, water availability is considered the main constraint for crop production. Concerns about water accessibility have always accompanied crop production in dry areas, which are on the other hand the most extensive areas for agriculture on the earth. As a consequence, men had to develop agricultural strategies to cope with water shortage, growing the plants during the short climati...
The H(2) is an obligate by-product of N-fixation. Recycling of H(2) through uptake hydrogenase (Hup) inside the root nodules of leguminous plants is often considered an advantage for plants. However, many of the rhizobium-legume symbioses found in nature, especially those used in agriculture are shown to be Hup(-), with the plants releasing H(2) produced by nitrogenase activity from root nodule...
Transgenic crops, a new product of agricultural biotechnology has its own share of environmental risks and benefits. Present agricultural management practices and new ecosystems have their own impacts on the environment and further any additional negative effect of transgenic crops may mitigate their positive impacts as well as increase the background value of negative impacts due to new agricu...
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