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Chithiraichelvan, R.
- Induction of Off-Season Flowering in Custard Apple (Annona squamosa L.) Cv. Balanagar
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PDF Views:133
Authors
Affiliations
1 Collage of Horticulture, Bengaluru University of Horticultural science, Bagalkot - 587 123, IN
2 Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru-560089, IN
1 Collage of Horticulture, Bengaluru University of Horticultural science, Bagalkot - 587 123, IN
2 Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru-560089, IN
Source
Journal of Horticultural Sciences, Vol 10, No 1 (2015), Pagination: 13-17Abstract
Pruning and defoliation are essential operations for inducing off-season flowering and fruiting to yield better quality and quantity of fruits in custard apple. Trees were subjected to two levels of pruning (25% and 50%) combined with use of chemical defoliants (urea 5%, Ethrel 2000ppm, potassium iodide 1%, or ortho-phosphoric acid 1%) besides the Control, with each treatment replicated thrice. Early initiation of flowering and better vegetative growth was seen in pruned (25%) and defoliated trees than in the Control or other treatments. Maximum off-season yield (10.33kg/ plant) was obtained in T4 (25% pruning, combined with 5% urea spray as defoliant) and T6 (25% pruning, combined with 1% potassium iodide-spray as defoliant). Findings of this investigation helped standardize pruning and defoliation practices on a scientific basis for off-season production of custard apple fruits.Keywords
Pruning, Defoliation, Off-Season, Custard Apple, Urea.References
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- Effect of Spacing and Pruning on Growth, Yield and Quality of Cv. Deanna Fig (Ficus carica L.)
Abstract Views :184 |
PDF Views:111
Authors
Affiliations
1 Division of Fruit Crops, ICAR - Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru-560 089, IN
2 Gandhigram Rural Institute (Deemed University), Gandhigram, Dindigul-624302, Tamil Nadu, IN
3 Division of Plant Physiology and Biochemistry, ICAR - Indian Institute of Horticultural Research, Bengaluru-560089, IN
1 Division of Fruit Crops, ICAR - Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru-560 089, IN
2 Gandhigram Rural Institute (Deemed University), Gandhigram, Dindigul-624302, Tamil Nadu, IN
3 Division of Plant Physiology and Biochemistry, ICAR - Indian Institute of Horticultural Research, Bengaluru-560089, IN
Source
Journal of Horticultural Sciences, Vol 9, No 1 (2014), Pagination: 31-37Abstract
The effects of tree spacing (5x2m, 5x2.5m, 5x3m, 5x3.5m and 5x4m) and pruning (8 buds/cane, 6 buds/cane and 4 buds/cane) on vegetative growth, physiological parameters, fruit yield and quality were studied in fig (Ficus carica L.) cv. Deanna in the 3rd and 4th year of its growth during the period 2010-12. It was observed that with increase in tree spacing, growth parameters like leaf number, shoot length, internode length, tree-spread, tree height and tree circumference, along with fruit yield both in terms of fruit number and fruit weight per tree, declined gradually under different pruning levels. Increase in pruning level from 8 buds/cane to 4 buds/cane resulted in increased leaf number, shoot length and internode length. Yield characters, viz., fruit number/tree, fruit weight/tree, fruit number/hectare and fruit weight/hectare were marginally influenced by pruning. However, interaction effects of pruning and spacing were found to be non-significant. Consistently declining trends in photosynthesis rate and stomatal conductance, along with increase in leaf water potential value were observed with increase in spacing. Effects of spacing were more conspicuous than those of pruning. Best results for maintenance of vigour and fruit yield were observed under a spacing of 5x2m or 5x2.5m, and 4 buds/cane pruning. Although there was reduction in average fruit size under closer spacing when compared to wide spacing, fruit quality attributes like TSS and acidity were not affected by various treatments. Effects of closer spacing on growth and yield parameters were more pronounced in the 3rd year as compared to the 4th year, showing better response to treatments in young trees. Fruit yield calculated on per hectare basis showed highest fruit number of 116500-133750 and 274500-299500, and fruit weight of 54.5-62.0 and 158.77- 173.30 quintals/ha, respectively, during the 3rd and 4th year of planting under closer spacing of 5x2m and 4 buds/cane pruning.Keywords
Ficus carica, Fig Deanna, Growth, Pruning, Fruit Quality, Spacing, Yield.- Genetic Diversity in 'Appemidi' Pickle Mangoes
Abstract Views :212 |
PDF Views:131
Authors
Affiliations
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore - 560 089, IN
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore - 560 089, IN