Correlation effect with micronutrient enriched compost on soil properties with yield and Nutrient uptake of Aerobic Rice

Abstract

A field experiment was conducted during Kharif 2011 at ZARS, V.C. Farm, Mandya, Karnataka. The Correlation effect with micronutrient enriched compost on soil properties with yield and Nutrient uptake of aerobic rice. The experiment was carried out in a randomized complete block design (RCBD) replicated thrice with 17 treatments involving levels of nitrogen and micronutrient enriched compost. The soil of experimental field was sandy loam in texture having a neutral pH of 6.68 with low soluble salts (EC = 0.02 dSm–1), low in organic carbon content (4.66 g kg–1), medium in available N (376.72 kg ha–1), medium in available P2O5 (33.18 kg ha–1), medium in available K2O (298.91 kg ha–1), low in available S (9.91 mg kg–1), DTPA extractable zinc (0.51 mg kg–1) andiron (4.52 mg kg–1). The results revealed that grain yield was significant and positive correlated with pH (r= 0.580*) organic carbon (r= 0.499*), DTPA Fe (r= 0.501*) and highly significant correlation available potassium (r= 0.702**), available sulphur (r= 0.727**) and DTPA zinc (r= 0.816**). Whereas, EC (0.210), available nitrogen (r= 0.167), available phosphorus (r= 0.341) was positively correlated with yield. Whereas nutrient uptake was positively and significantly correlated with available nitrogen (r= 0.986**), phosphorus (r= 0.976**), potassium (r= 0.949**), sulphur (r = 0.727**), zinc (r= 0.892**) and iron (r= 0.879**)