Soil properties as influenced by use of irrigation water having variable RSC and different varieties of groundnut (Arachis hypogea L.)

Abstract

A pot experiment was conducted during summer-2019 at Net House, Department of Agricultural Chemistry and Soil Science, Junagadh Agricultural University, Junagadh to study the “Soil properties and different varieties of groundnut as influenced by variable RSC of irrigation water”. The pot experiment comprising of four RSC levels (0, 2.5, 5.0 and 7.5 meq L-1) and four different groundnut varieties (V1- TG-37-A, V2- TPG-41, V3- GJG-31 and V4- GG-6) by adopting Completely Randomized Design (Factorial) replicated three times. The available P2O5, organic carbon and available Mn of soil after harvest of the crop were found maximum with RSC- 0 meq L-1. Remaining micronutrients were not affected by RSC water and varieties.The water soluble cations like Ca, Mg, Na and K, exchangeable cations like Ca, Mg and CEC and EC2.5 and ECe were found maximum with irrigation water having RSC -0 meq L-1. Water soluble CO3 2- and HCO3 - exchangeable cations like Na and ESP, pH2.5 and pHs were observed highest with RSC value 7.5 meq L-1. The highest value of available K2O and organic carbon, water soluble cations like Mg and K, exchangeable K and EC2.5 were observed with the variety V2- TPG-41. Exchangeable Na and ESP and available N were observed highest with variety V1- TG-37-A. The combined effect of RSC of irrigation water and variety was found significant on available N, water soluble Ca, Mg, K and ESP of soil after harvest of the groundnut crop.