Salininity Stress Essay

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Background: Salinity stress presents a significant challenge in the future of plant growth and food production. Compost from water hyacinth co-digested with cow dung (WC) provides a potential alternative to alleviate adverse effects of salinity with a highly significant increase in the growth parameters of plants for human food. Hence, this study was undertaken to evaluate the efficiency of WC to alleviate salinity stress in Lupinus albus.
Results: Salinity stress (with 150 mM NaCl) led to a highly significant decrease in all growth criteria of L. albus. The application of WC compost to the soil resulted in a highly significant increase in the L. albus growth parameters. Photosynthetic pigments showed that salinity level (150 mM NaCl) led to a highly significant decrease in chl. a , chl. b and carotenoids of L. albus. The effect of WC compost on the photosynthetic pigment content was reflected in a highly significant increase in chl. a and chl. b with a highly significant decrease in carotenoids content at seedling stage. Emendation of the soil with WC compost resulted in a highly significant reduction …show more content…

High concentrations of salts in soils account for large decreases in the yield of a wide variety of crops (Ediga et al., 2013). These effects are through osmotic inhibition, ionic toxicity and disturbance in the uptake and translocation of nutritional ions leading to alterations in physiological and biochemical functions of the plant cells (Misra and Dwivedi, 2004; Xiong and Zhu, 2002). Salinity has two main components affecting plant growth. Initially, the water potential is lowered, and the plant experiences an osmotic stress similar to drought associated with concentrated solutes in the root zone. The subsequent ionic imbalance as salts perturb the uptake of nutrients and the accumulation of ions over time is the main cause of toxicity

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