Salt Stress In Agriculture

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Effects of salt stress on plants ultimately lead to the reduction of yield of the crop which is the most countable effect of salt stress in agriculture. This study conducted to determine whether the nitrogen fertilizer could alleviate the adverse effects of salinity on yield and yield components of wheat. The seeds of two wheat (Triticum aestivum L.) varieties (Elnilein from Sudan and Xumai 30 from China) cultured under different salinity levels containing (0, 1, 2, and 3 g NaCl/kg dry soil) designated as S0, S1, S2, and S3 and three level of nitrogen fertilizer in form of urea containing (0, 86, and 210 kg N/ha). designated as 0N ,1N, and 2N. Yield and yield components were determined. There were significant differences among salinity, nitrogen,…show more content…
Among the many abiotic stresses that plants encounter, salt stress is particularly significant in agriculture because salt stress can lead to a significant reduction in crop yield (Wassmann et al., 2009). Salinity is one of the most critical factor limiting crop production on marginal agricultural soils in many parts of the world. Currently, about 6% of the total land area or 20% of the total agricultural lands are affected by salinity (FAO, 2007). The decrease in growth observed in many plants subjected to salinity stress is usually associated with salt-induced osmotic effect, nutrient deficiency, specific ion toxicity, or their interactions (Munns,…show more content…
The number of spikelet per spike Five plants were randomly selected from each pot, and a number of spikelets was measured. And then the average was recorded. The number of grains per spike The number of grains per spike was recorded as: Grains per spike = (Number of grain per m2/ number of spike per m2) Grain weight per spike Five spikes randomly were selected from five stems and, threshed and grains weight was measured as: Grain weight per spike (g) = (Grain weight of 5 stems/ 5) Thousand grain weight The weight of 1000 grain was recorded as per the procedure is given in ISTA Rules (Association, 1985). The average 1000 seed weight was recorded in grams (g). Grain yield Grain yield of wheat plants was measured from each pot and then converted into metric ton (MT/ha). Data Analysis The experimental design was a factorial design with three factors, arranged in a split-plot randomized complete block design with three replications for each treatment. The experiment was done two different seasons and there were no significant differences in all variables between the two seasons. So, the mean of each variable of the two seasons were used for data analysis. The data of each variable subjected to analysis of variance (ANOVA) with the statistical package of Mstat-C (Version 2.00) according to this design. When F values were significant, means separated by the LSD test (P ≤

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