Effect of con-joint application of inorganic and organic sources of nutrients with biofertilizers on growth, yield and fruit quality of Kinnow mandarin Kumar Rajesh*, Bhardwaj ML, Gupta Atul, Guleria Vipan, Kumar Dharminder, Chandel VGS Dr. Y.S. Parmar University of Horticulture and Forestry, Regional Horticultural Research and Training Station, Jachh (Nurpur), Distt. Kangra, (H.P.) - 176 201 *E-mail: rajesh_papahan@rediffmail.com
Online published on 10 May, 2021. Abstract Investigations were conducted to study the effect of integrated use of organic manures, inorganic fertilizers and biofertilizers on growth, yield and fruit quality attributes of kinnow mandarin. Maximum (0.70 m) trunk girth was recorded in T4 (70% NPK (560g N: 350g P: 420g K ) + 42 kg FYM + 9 kg vermicompost + biofertilizers (Azotobacter, VAM and PSB @ 200g each/tree). Tree height was also higher (3.65m) in T4 along with tree volume in T4 (29.53 m3). Maximum tree spread was 3.98 m in EW and 3.86 m in NS directions was recorded in T4 closely followed by T1 (100% NPK ((800gN: 500gP: 600gK) + 60kg FYM). Application of 70% of the recommended doses of NPK (560g N: 350g P: 420g K) in the mid of December except N (urea) in two split doses (first during spring before flowering and remaining half dose after fruit set) with farmyard manures @ 42 kg and vermicopost @ 9kg alongwith biofertilizers (Azotobacter, VAM and PSB) @ 200g each/tree) during September in a ring placement at a depth of 30 cm and one meter away from the tree trunk gave significantly highest number of fruits/ tree (213), fruit yield (41.89kg/tree) and maximum fruit size and fruit weight. The same treatment recorded the highest gross income (Rs. 1505.76), net income (Rs. 1157.74) and benefit cost ratio (3.3). Top Keywords INM, Organic manures, Biofertilizers, Kinnow mandarin. Top |