in order to study the effects of different irrigation levels on yield, yield components and drought tolerance of four chickpea cultivars, a farm experiment was conducted in mashhad climatic condition during 2008-2009 growing season. four irrigation levels including: t1= 100% etc (full irrigation), t2= 90% etc (deficit irrigation), t3=80% etc (deficit irrigation) and t4=50% etc (deficit irrigati...

Water sources optimizing required a suitable irrigation program. Different material can use to increase water use efficiency. Superabsorbent is one of the materials where used in around the world. These materials put in the soil and absorb water so that reserved water is usable by plant in the time of drought stress and they can reduce stress and lead to prevent yield loss. Therefore, the exper...

Drought stress is one of the important factors that restrict crop production in the world. This study was conducted to investigate defense gene expression in response to drought stress, and also to evaluate the drought tolerance and its mechanism in rice cultivars based on randomized complete block design in two separate environments (drought stress and non-stress). The rice cultivars used incl...

rainfall deficiency and the development of salinity in iran are the most important factors for using new salt and drought-resistant plants instead of conventional crops. kochia species have recently attracted the attention of researchers as a forage and fodder crop in marginal lands worldwide due to its drought and salt tolerant characteristics. this field experiment was performed at the salini...

Drought is the most common environmental stress in vineyard occurs in soils with low water content, even in irrigation condition. To evaluate foliar spraying of ascorbic acid under drought stress, a research during 2012 to 2013 years in the natural environment, and one year after the establishment of the cuttings in clay loam soil was conducted. Cultivars with two-level white seedless and khosh...

to investigate the effect of deficit irrigation on quantitative and qualitative yield of soybean cultivars, an experiment was conducted as split plots based on randomized complete block design with three replications at agricultural research farm, university of guilan, during 2009. main factors were included four irrigation levels based on potential moisture 30-35 (i1), 50-55 (i2), 70-75 (i3) c...

in order to study the effects of pgpr application methods on essential oil percent and yield of lavender (lavandula angustifolia l.) under drought stress conditions an experiment was performed at islamic azad university, yadegar-e-imam khomeini (rah) shahre-rey branch. this experiment was carried out in a split plot arrangement with randomized complete block design in three replications. experi...