EFFECT OF DIFFERENT PLANTING DATES AND PINCHING ON PERFORMANCE OF CHINA ASTER.
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Date
2021-02-23
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Dr.Panjabrao Deshmuksh Krishi Vidyapeet,Akola
Abstract
A field investigation entitled "Effect of different planting dates and pinching on performance of China aster" was carried out during the years 2017-18 and 2018-19 at Floriculture Unit, Department of Horticulture, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola with the objectives to study the effect of different planting dates and pinching on growth, flowering, yield and quality of China aster cv. Phule Ganesh White and to find out the suitable planting date and pinching for quality production of China aster.
The experiment was laid out Factorial Randomized Block Design with three replications and two factor i.e. factor “A” consist of different planting dates (D) viz. 1st September, 15th September, 1st October and 15th October and factor “B” consist of different pinching (P) viz. no pinching, single pinching at 20 DAT and single pinching at 30 DAT with 12 treatment combinations.
The result of the present investigation indicated that, planting date treatment D2 (15th September) was recorded significantly superior result in respect of maximum plant height, primary branches plant-1, secondary branches plant-1, stem diameter of the plant, plant spread as well as leaf area, minimum days for emergence of first flower bud, days taken to fully opened flower, 50 per cent flowering, days to first harvesting as well as maximum duration of flowering, number of flowers plant-1, flower yield plant-1, flower yield plot-1 and flower yield ha-1, diameter of fully opened flower, stalk length, stalk diameter, weight of flower, vase life of cut flower and shelf life of loose flower.
Regarding the pinching treatment P2 (single pinching at 20 DAT) exhibited significantly superior result for primary branches plant-1, secondary branches plant-1, stem diameter of the plant, plant spread, leaf area, duration of flowering, number of flowers plant-1, flower yield plant-1, flower yield plot-1 and flower yield ha-1. Whereas, treatment P1 (no pinching) had recorded significantly maximum plant height, minimum days for emergence of first flower bud, days taken to fully opened flower, 50 per cent flowering, days to first harvesting, maximum diameter of fully opened flower, stalk length, stalk diameter, weight of flower, vase life of cut flower and shelf life of loose flower.
The interaction effect between different planting dates and pinching, the treatment combination D2P2 (15th September planting with single pinching at 20 DAT) was found better for maximum secondary branches, plant spread at 50% flowering, duration of flowering, flowers plant-1, flower yield plant-1, flower yield plot-1 and flower yield ha-1. Whereas, the treatment combination D2P1 (15th September planting with no pinching) was recorded minimum days required to 50% flowering, maximum diameter of flower and vase life of cut flower.
Considering the cost economics, the treatment combination D2P2 i.e. 15th September planting with single pinching at 20 DAT was found to be most remunerative and profitable as per the B:C ratio (1:2:99) obtained for China aster production under Akola conditions.
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GAIDHANI, ASHVINI HEMRAJ. (2020). Effect of different planting dates and pinching on performance of China aster. Department of Horticulture, (Floriculture and Landscape Architecture). Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Ph. D. 2020 Print. xv, 191p. (Unpublished).