Effect of plant growth regulators on growth, yield and quality of mandarin (Citrus reticulata Blanco) cv. 'Nagpur
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Date
2013
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MPUAT, Udaipur
Abstract
A field experiment entitled "Effect of plant growth regulators on growth, yield and quality of mandarin (Citrus reticulata Blanco) cv. 'Nagpur' was conducted at the fruit research farm, Department of Fruit science, College of Horticulture and Forestry, Jhalawar during July 2012 to April, 2013. The experiment was consisting of 17 treatments having four levels of each NAA (50, 100, 150 and 200 ppm), GA3 (25, 50, 75 and 100 ppm), 2,4-D (10, 20, 30 and 40 ppm) and Triacontanol (5, 10, 15 and 20 ppm) along with water spray as control. The experiment was laid out in randomized block design with three replications.
Results revealed that spray of various plant growth regulators at different levels significantly influenced the overall performance of Nagpur mandarin. The maximum per cent increase in plant spread and crown volume was recorded with the spray of 100 ppm GA3, which was found at par with 75 ppm GA3 treatment. The fruits qualitative characters like maximum increase in diameter (horizontal and vertical), weight, volume and number of sacs per fruit, minimum days taken to first harvesting and complete harvesting was recorded with the spray of 100 ppm GA3, which was closely followed by 30 ppm 2,4-D. The minimum peel thickness, number of seeds per fruit and average seeds weight per fruit was also recorded highest total soluble solids, TSS/Acid ratio, reducing sugar, non-reducing sugar, total sugar, ascorbic acid content, sensory score and lowest total acidity of fruit was observed with the spray of 30 ppm 2,4-D. The highest juice content of fruit was observed in 100 ppm GA3 treatment followed by 30 ppm 2,4-D. The maximum number of fruit per tree, fruit retention per cent and yield per plant and per hectare was recorded with the spray of 30 ppm 2,4-D which was at par with 10 ppm 2,4-D.
Similarly, this 2,4-D @ 30 ppm treatment has resulted the maximum gross return of Rs. 1,21,600/ha which was Rs. 49600/ha excess over control. Further, the highest net profit (Rs. 48,885/ha) was also estimated at this treatment which was 67.85 per cent higher than control.
Description
Effect of plant growth regulators on growth, yield and quality of mandarin (Citrus reticulata Blanco) cv. 'Nagpur
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Citation
Choudhary and Jain, 2013