STUDIES ON THE EFFECT OF MICRONUTRIENTS IN CHINA ASTER (Callistephus chinensis L. Nees.) GENOTYPES

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2019-07-31
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K.R.C COLLEGE OF HORTICULTURE, ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
The present investigation on “Studies on the effect of micronutrients in China aster (Callistephus chinensis L. Nees) genotypes” was conducted during the year 2017-18 at Department of Floriculture and Landscape Architecture, KRCCH, Arabhavi, Karnataka. Experiment was laid out in Factorial Randomized Block Design with 16 treatment combinations with an objective to find out the effect of foliar application of micronutrients on genotypes AAC-1 and Arka Kamini with respect to growth, flowering, yield and quality. Among the 16 different micronutrients combinations studied the treatment T13 (ZnSO4 @ 0.4% + FeSO4 @ 0.4% + Boron @ 0.1%) recorded maximum plant height (65.90 cm), number of branches (25.76), leaf area (4288.51 cm2), plant spread (42.80 and 45.23 cm towards E-W and N-S directions respectively), flower diameter (6.93 cm), shelf life (2.36 days), vase life (10.23 days) and dry matter production (55.80 g) . Similarly for yield attributes such as the highest number of flowers per plant (66.15), single flowers weight (4.03 g), flower yield per plant (231.44 g), flower yield per hectare (20829.83 kg), seed yield per plant (5.41 g) and seed yield per hectare (486.54 kg) were recorded in the treatment T13. AAC-1 genotype exhibited good vegetative growth and yield parameters such as plant height (55.75 cm), number of branches (21.79), leaf area (3537.45 cm2), highest number of flowers per plant (59.78), flower yield per plant (235.24 g), flower yield per hectare (21.17 t/ha), seed yield per plant (4.95 g) and seed yield per hectare (445.16 kg) while, the genotype Arka Kamini exhibited earliness for flower initiation (64.62days). Eventhough the interaction effects of micronutrient and genotypes was nonsignificant, the highest gross and net returns were from the treatment T13 with B: C ratio 1:4.98.
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