Asian Journal of Soil Science and Plant Nutrition

Water deficit stress and climatic changes pose serious threats to plant productivity and soil health, ultimately affecting global food security and ecosystem stability. Sustainable water management, conservation practices, and climate-resilient crops are crucial to mitigating these effects. Consequently, using some soil conditioners and anti-transpirations like potassium silicate (PS), compost (COM)), chitosan (CHI) and Abscisic acid (ABA) can reduce the negative impact of water stress and improve of soil properties that reflect on plant productivity. Two field experiments during autumn seasons of 2021 and 2022 were designed in a split plot design with three replicates at Shandweel Research Station, Sohag Governorate, Egypt. The main objectives of this study were to estimate the effect of some soil conditioners and anti-transpirations (PS, COM, CHI and ABA) on common bean plant productivity as well as some physical and chemical properties of soil under water deficit stress (60 and 80 %) and full irrigation 100% of water requirement as control during the autumn seasons to investigate grown in clay loam soil. The obtained results showed that reducing irrigation to 60 and 80% of the water requirements led to significant decrease in vegetative growth parameters, flowering date, pod length, plant height number of pods/plant and green pods yield/fed compared to full irrigation. Moreover, the results explored that soil pH, salinity, organic matter, available nutrients have been effected with water stress compared to the control. In addition, all plant attributes and soil properties improved in the presence of compost in the first and second seasons. As well as, the results showed that the compost was the best application used in this investigation in terms of adaptation under deficit water stress.