Ecology, Environment and Conservation Paper

EFFECT OF MICRONUTRIENTS ON YIELD AND QUALITY OF GUAVA UNDER HIGH DENSITY PLANTING CV. SARDAR

S.S. Kulkarni, Y.T. Lambe and P.A. Sable

Abstract

The present investigation entitled, “Studies on micronutrients application on yield and quality of guava under high density planting Cv. Sardar” was conducted at Instructional-Cum Research Orchard, Department of Horticulture, Mahatma Phule Krishi Vidyapeeth, Rahuri, during 2013-14. The experiment was conducted on 4 year old healthy, vigorous ultra high density plantation (2 x 2 m.). The experiment was laid out in Randomized Block Design with ten treatments and three replications. Sprays of micronutrients viz. Calcium nitrate, zinc, boron, magnesium and water spray were carried out at 50 % flowering and one month after first spray. The maximum average number of fruit per tree (101.67), average weight of fruit (218.87 g), yield per tree (22.25 kg) and per ha. (55.63 tonnes) was recorded in T1 [Ca (NO3)2 (1%)], whereas minimum average number of fruit per tree (67.03), average weight of fruit (174.17 g), yield per tree (11.70 kg) and per ha. (29.24 tonnes) was recorded in T10 [Control]. The quality parameters like calcium, ascorbic acid pectin content were significantly influenced due to various treatments. Significantly higher calcium content (3.85 mg /100g) and pectin (0.64 %) was recorded in T1 [Ca (NO3)2 (1%)] and ascorbic acid (212.98 mg /100g) in T7 [Mg (0.1%)] while significantly lower calcium content (2.43 mg /100g) and ascorbic acid (197.96 mg /100g) was recorded in T10 [Control]. The minimum pectin (0.48 %) was recorded in T9 [water spray].