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- W2529366883 abstract "Salinity affects food production worldwide. Hence, appropriate management of saline water is important to reduce negative effects on plants, soils, and ultimately the groundwater. Peppers (Capsicum annuum L.) are moderately sensitive to salinity, and required a high water input to maximize yields. This project investigated the effects of varying levels of salinity (0.2 to 9.0 dS∙m−1) and the use of drip irrigation and mulching as water management for peppers. During fruit development, stomatal conductance (gs), transpiration (E) and photosynthesis (A) decreased as salinity increased. Mulched plants had higher gs, E and A than the ones grown in bare soil. Growth was reduced by salinity but increased by mulching. Saline water levels above the control (0.2 or 0.5 dS∙m−1) reduced marketable yield whereas mulched plants had higher marketable yields than plants grown in bare soil. Under limited salt leaching condition, mulched plants required less water at all levels of salinity than the ones grown in bare soil, resulting in less soil salinization. Effects of saline water on seedlings showed that final emergence was only reduced at salinities equal or greater than 3.5 dS∙m−1. In general, growth (dry weight) and rates of gs, E and A were reduced at salinities equal or greater than 2.5 dS∙m−1. Applying saline water (2.5 dS∙m−1) at different growth stages with limited salt leaching, showed that plants grown in bare soil were slower than mulched ones to recover normal physiology after periods of saline irrigation. Saline irrigation applied from fruit set onwards decreased marketable fruit production whereas mulched plants increased yields regardless of saline%%%%La salinite affecte la production alimentaire partout dans le monde. Il est donc important de gerer adequatement l'eau saline pour reduire les effets negatifs sur les plantes, le sol et les nappes souterraines. Le poivron (Capsicum annuum L.) est moderement sensible a la salinite et requiert une forte demande en eau pour maximiser les rendements. Ce projet visait a etudier les effets de differents niveaux de salinite (0.2 a 9.0 dS∙m−1) et l'utilisation de l'irrigation goutte-a-goutte et de paillis pour la gestion de l'eau dans les champs de poivrons. Pendant la formation des fruits, la conduction des stomates (gs), la transpiration (E) et la photosynthese (A) ont diminue en fonction de l'augmentation de la salinite. Les plants sur paillis avaient de plus grandes gs, E et A que les plants sans paillis. La croissance etait reduite par la salinite mais augmentait avec le paillis. L'eau saline (0.2 ou 0.5 dS∙m−1) a…" @default.
- W2529366883 created "2016-10-14" @default.
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- W2529366883 date "2009-01-01" @default.
- W2529366883 modified "2023-09-28" @default.
- W2529366883 title "The effects of saline irrigation water on the growth and development of bell pepper «Capsicum annuum L.)» grown using a plasticulture system" @default.
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