Vol. 10, Special Issue 7 (2021)

Author(s):
G Kiran Reddy, SHK Sharma, G Jayasree, SA Hussain, S Triveni and TL Neelima

Abstract:
The study was carried out to know the soil fertility status of Nagarjuna Sagar Left Bank Command area, of Nalgonda district, Telangana by using GPS-GIS technology during the year 2020-2021. The pH of soils of Nagarjuna Sagar Left Bank Command area varied from 6.21 to 9.62, most of the soils were found to be moderately alkaline to very alkaline (78.23%) while EC varied from 0.17 to 4.33dS m^-1, most soils were found to be high saline to very high saline (97.54 %) in salinity. Organic carbon content varied from 0.15 to 1.16% and categorized as low (30.4%), medium (66.6%) and high (3.0%). The soil available nitrogen, phosphorus and potassium in study area varied between 100.0 to 450.0, 10.3 to 71.2 and 25.5 to 1115.9 kg ha^-1, respectively. The soils were low (50.1%) and medium (49.9%) in available nitrogen, with respect to available phosphorus low (0.1%), medium (87.2%) and high (12.7%). In case of available potassium low (0.2%), medium (21.7%) and high (78.1%). The exchangeable calcium and magnesium ranged from 6.2 to 16.2 and 3.2 to 9.8 cmol (p+) kg^-1, respectively. The available sulphur varied from 0.32 to 29.9 mg kg^-1. The soils were low (0.5%), medium (67.1%) and high (32.4%) in available sulphur content. The soils were sufficient (100.0%) in exchangeable calcium and magnesium, respectively. Available Zn, Cu, Fe and Mn were deficient in 97.49%, 94.95%, 99.63% and 99.01% soil samples respectively.