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20201
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Subject: Floriculture and Landscaping × Author: ABROL, AMITA × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    EFFECT OF INTEGRATED NUTRIENT MANAGEMENT STUDIES AND PLANTING DATES ON COMMERCIAL FLOWER PRODUCTION IN CHINA ASTER (Callistephus chinensis (L.) NEES)
    (NAUNI,UHF, 2020-06) ABROL, AMITA; CHAUDHARY, SVS
    ABSTRACT The investigation entitled, “Effect of integrated nutrient management studies and planting dates on commercial flower production in China aster (Callistephus chinensis (L.) Nees)” was carried out at the Experimental Farm of Department of Floriculture and Landscape Architecture, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni- Solan during 2018 -2019 in China aster cv. “Kamini”. During the studies, two experiments on INM and planting dates experiment was laid out in Randomized Block Design with 12 treatment combinations i.e. 100%, 85% and 70% NPK along with vermicompost, biofertilizers (Azotobacter + Arbuscular Mycorrhizae fungi) and replicated thrice. Half dose of nitrogen and whole of the phosphorus and potassium were incorporated in soil one week before planting according to the treatments. The remaining half dose of nitrogen was applied after 30 days of planting. Vermicompost was applied immediately after planting @ 1kg/m2. Azotobacter were applied by preparing slurry of 200 g of the inocula in one litre of 10% sucrose solution as root dip for 500 seedlings. The Arbuscular Mycorrhizae fungal consortia were applied @ 2 g/plant at the time of planting. It was observed that for cut flower production T12 (70% RDF + Biofertilizer + Vermicompost) with April planting improved most of the parameters viz. plant height (74.41 cm), plant spread (31.95 cm), flower diameter (5.79 cm), number of cut flowers per plant (20.86), number of cut flowers per square meter (333.73), duration of flowering (33.21 days); and vase life (13.92 days). For loose flower production production T12 (70% RDF + Biofertilizer + Vermicompost) with April planting improved most of the parameters viz. plant height (72.79 cm), plant spread (29.57 cm), flower diameter (6 cm), number of flowering stem per plant (11.04), number of flower per plant (30.31), number of flower per square meter (484.93), fresh weight of individual flower head (3.70 g), weight of flower per plant (66.91 g), weight of flower per square meter (1,070.59 g), duration of flowering (33.74 days), shelf life of flowers in ambient conditions (11.44 days), shelf life in cool chamber (4oC) (18.50 days), seed yield per plant (7.59 g), seed yield per square meter (121.41 g), 1000 seed weight (2.42 g), azotobacter count (31.09 x 10-5 cfu/g of soil) and Arbuscular Mycorrhizal fung spore count (205.84 spore count per 50 gram).