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2016 - 20202
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Subject: Floriculture and Landscaping × Author: ABROL, AMITA ×
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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).
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    ThesisItemOpen Access
    EFFECT OF GROWTH REGULATORS ON POTTED CHRYSANTHEMUM (DendranthemagrandifloraTzvelev) UNDER DIFFERENT PHOTOPERIODIC CONDITIONS
    (UHF,NAUNI, 2016) ABROL, AMITA; DHIMAN, S.R.
    ABSTRACT The present investigation entitled, “Effect of growth regulators on potted chrysanthemum (Dendranthemagrandiflora Tzvelev) under different photoperiodic conditions” 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 (H.P) during 2014-2015 under controlled and natural photoperiods in six inch plastic pots in naturally ventilated polyhouse. The experiment was laid out in a Completely Randomized Design (factorial) consisting of two cultivars i.e. ‘Ajay’ and ‘UHFSChr-Collection 1’ and seven growth regulator treatments i.e. control (distilled water), paclobutrazol (60 and 90 ppm), daminozide (2500 and 3000 ppm) and ethephon (500 and 750 ppm) and replicated thrice. In general, controlled photoperiod, when applied was found better for flowering over natural photoperiod. Flowering was observed much earlier under controlled photoperiod (142.60 days) with improved quality of plants as compare to natural photoperiod (169.20 days). Findings revealed that for the best quality pot mum production of chrysanthemum cultivar ‘Ajay’, the pot should be sprayed with60 ppm paclobutrazolafter one week of pinching. However the pots of ‘UHFSChr-Collection 1’ under natural photoperiod should be sprayed withdaminozide 3000 ppmand undercontrolled photoperiod sprayed withpaclobutrazol 60 ppmfor highest quality pot mum production.