Effect of rice residues and organics source on physico-chemical properties of the soil

Abstract

The study entitled was carried out during Kharif season of 2018-2019 at Research farm of, Indira Gandhi krishi Vishwavidhyalaya, Raipur, Chhattisgarh. The experiment was laid out in randomized block design three replication and ten treatment combinations rice residue with organic source. The treatment combination for rice were T1 [Control (N0:P0:K0], T2 [100% NPK (100:60:40)], T3 [100% Rice Residue], T4 [150% Rice Residue], T5 [50% N Rice Residue + 50% N Green Manure], T6 [75% N Rice Residue + 25% N Green Manure], T7 [50% N Rice Residue + 50% N Vermicompost], T8 [75% N Rice Residue + 25% N Vermicompost], T9 [100% N Rice Residue + BGA+ Azospirillum], T10 [150% N Rice Residue + BGA+ Azospirillum]. The incorporation of rice residue with organics reduced the bulk density and increased porosity of soil. While the soil pH was non significantly increased but Organic Carbon and electrical conductivity were significantly increased in incorporation of rice residue along with organics. The available nitrogen, phosphorus, potassium and micro nutrient iron, copper, manganese and zinc status in soil was not significantly influenced due to the incorporation of rice residue. In present study it is clearly indicated that incorporation of rice residue along with organics had higher yield as well as maintained soil physico- chemical and biological properties.