CLIMATE RESILIENCE STUDIES IN MANGO.
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Date
2022-03-24
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Dr.Panjabrao Deshmuksh Krishi Vidyapeet,Akola
Abstract
An experiment entitled ‘Climate resilience studies in Mango’ was conducted at experimental farm and analytical work was carried out at analytical laboratory, Department of Horticulture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during 2016-17, 2017-18 and 2018-19 with the objectives to study vegetative, flowering and fruiting behaviour of different mango cultivars in relation to different weather parameters and to estimate heat units requirement for various phenophases of different mango cultivars under western vidarbha region. The experiment was conducted in pooled over season analysis with seven cultivars viz., Kesar, Pairi, Neelum, Mallika, Amrapali, Dashehari and Vanraj which were replicated five times. The results revealed that in respect of phenological parameters, the variations were observed for time of vegetative flushing, flower bud differentiation, bud bursting, panicle emergence and full bloom. The pattern of number of vegetative flushes was found similar for three seasons, among the seven mango cultivars the cvs. Pairi and Neelum exhibited 4 vegetative flushes whereas, rest of cultivars showed only 3 flushes. The earliest flower bud differentiation, bud bursting and panicle emergence was recorded in cv. Pairi followed by cvs. Vanraj and Amrapali however it was late in cv. Dashehari. The least flowering span was recorded in cv. Mallika which was at par with cvs. Neelum, Dashehari and Kesar while the maximum span was recorded in cv. Vanraj. The highest fruit set per cent at marble stage was recorded in cv. Kesar however highest fruit retention at harvest was observed in cv. Amrapali. The earliest and highest fruit drop was recorded in cv. Vanraj followed by cv. Neelum. The mango cv. Dashehari had earliest fruit maturity followed by cvs. Mallika, Vanraj, Neelum and Kesar however cvs. Pairi and Amrapali were late with significantly highest fruit yield tree-1. In respect of occurrence of diseases and expression of disorders, the least powdery mildew and malformation incidence was recorded in cv. Dashehari which was at par with cvs. Mallika, Neelum and Amrapali.
In physico-chemical parameters, highest fruit weight was recorded in cv. Pairi, pulp per cent and pulp: stone ratio in cv. Kesar however lowest stone and peel ratio was noted in cv. Kesar and cv. Neelum respectively. The maximum total soluble solids was recorded in cv. Kesar, total sugars in cv. Vanraj, ascorbic acid content in cv. Dashehari and carotenoids content in cv. Amrapali however the minimum titratable acidity was observed in cvs. Amrapali and Vanraj. The weather parameters had significant correlation with growth parameters (days required for flower bud differentiation, initiation of flowering, flowering span and fruit maturity), fruit yield and quality parameters (total soluble solids, titrable acidity, total sugars).
The mango cv. Pairi accumulated least agrometeorological units for flower bud differentiation and flowering span however cv. Vanraj accumulated least agrometeorological units for initiation of flowering and fruit maturity. The highest heat use efficiency, heliothermal use efficiency, photothermal use efficiency and hydrothermal use efficiency was recorded in cv. Pairi followed by cvs. Kesar, Amrapali and Mallika.
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Citation
Deshmukh, Pravin Laxman. (2022). Climate Resilience Studies in Mango. Department of Horticulture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph. D. 2022. Print. xix, 237p. (Unpublished).