Expediency of water and soil nutrients in irrigated and extreme drought conditions

Abstract

Climate change has become global issue for crops due to increase in temperature and less rainfall resulting in shortage of water and decrease in yield. The experiment consisted of five guar (Cyamopsis tetragonoloba L.) genotypes viz. S-5744, S-5824, S-5785, BR-90, BR-99 were cultivated under irrigated and drought stress (only soaking dose) conditions using Randomized Complete Block Design (RCBD) with 3 replications. The data for yield and its components were recorded at the time of maturity of guar genotypes. The two genotypes S-5744 and S-5824 showed better performance under both drought and irrigated conditions and gave maximum yield 900 and 1133.33 grams in drought and irrigated, respectively. All characters showed positive correlation with each other except number of cluster plant -1 . The soil analysis was done in order to check availability and utilization of nutrients in the presence of water (irrigated conditions) and water deficit conditions (drought). The above mentioned two genotypes were less affected by the water shortage compared to others and were comeback after rainfall in the months of July and August and have ability of better uptake of nutrients from the soil in drought and irrigated conditions. However, nutrient use was higher under irrigated conditions.

Kaolin and Jasmonic acid improved cotton productivity under water stress conditions

“…Globally water and energy demand are increasing ( Shabbir et al, 2015 ) and are expected to rise 6.9 trillion cubic meters by 2030, the demand exceeding 40 % than the available water supplies ( Gilbert, 2010 ). Rising temperatures due to climate change have caused lesser rainfall and created water shortage which has led to lower crop production ( Muhammad et al, 2017 ). Cotton crop is commercially grown in tropical and subtropical regions of the world ( Riaz et al, 2013 ).…”