Effect of Organic Ammendments on Growth and Flowering of Dahlia

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Date
2020
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Punjab Agricultural University, Ludhiana
Abstract
The present study entitled “Effect of organic ammendments on growth and flowering of dahlia” was conducted at Research Farm, Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana during the year 2019-20. The experiment was conducted to find out optimum organic ammendments for better plant growth and quality flower production of pompon dahlia. In this experiment eight different organic ammendments comprising of farmyard manure, vermicompost, mustard oil cake, bone meal, poultry manure, neem cake, liquid cow dung manure and FYM+NPK (15 tonnes/ha+30:40:40) were applied in RBD using three replications. The observations were recorded on growth, floral and yield parameters. Plant growth parameter in terms of plant height (46.08 cm), number of primary branches (9.33/plant) and secondary branches (12.33/plant) were recorded maximum in treatment T8 (FYM+NPK) followed by treatment T2 i.e. vermicompost @ 10 t/ha. The stalk length (16.16 cm), flower diameter (5.16 cm) and vase life (4.66 days) were recorded maximum under treatment T8 (FYM+NPK) followed by treatment T2 (vermicompost @ 10 t/ha). The longest flowering duration of 59 days was recorded under treatment T8 (FYM+NPK). Treatment T8 (FYM+NPK) recorded minimum time from planting to full bloom (133 days). This treatment also proved superior in SPAD value (52.17 mg/100g). Yield parameters like weight of flowers/m2 (3.40 kg) and number of flowers/m2 (192) were also recorded with maximum value in T8. The benefit to cost ratio for dahlia was found to be maximum (1.12:1) under treatment T6 i.e. Neem cake @ 200 Kg /ha.
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Navkaranjot Singh (2020). Effect of Organic Ammendments on Growth and Flowering of Dahlia (Unpublished M.Sc. thesis). Punjab Agricultural University, Ludhiana, Punjab, India.
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