PERFORMANCE OF CHRYSANTHEMUM(Dendranthema grandiflora Tzvelev) AS INFLUENCED BY ORGANIC INPUTS
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Date
2018
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AAU, Jorhat
Abstract
An investigation was carried out during the year 2017-18 to study the “Performance of Chrysanthemum (Dendranthema grandiflora Tzvelev) as influenced by organic inputs” in the Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat-13. The experiment was laid out with 8 treatments in Randomized Block Design and replicated 3 times. The treatments were T1 {RDF(30:20:20g m-2 NPK )}, T2 {Rock phosphate + Microbial consortium}, T3{T2 + Vermicompost (2.5 t ha-1)}, T4 {T2 + Vermicompost (5t ha-1)}, T5 {T2 + Compost (2.5 t ha-1)}, T6 {T2 + Compost (5 t ha-1)}, T7 {Enriched compost (2.5 t ha-1)}and T8 {Enriched compost (5t ha-1)}. Data analysis revealed that growth and flowering, were significantly influenced by the application of different nutrient sources. Most of the growth and flowering characters were found highest in T4. and T7.which were at par. Highest plant height (112.33cm), highest leaf number (59.67) highest leaf area (88.00 cm2), highest stem thickness (1.33cm) were observed respectively for T4. Early days to bud visibility was recorded in the treatment T4 (48.33) days and T7 (51.33days).This trend was reflected earliness in colour break stage (75.33days and 75.66 days ), early days to half bloom (82.00days and 83.66days), early days to full bloom (87.66days and 88.66days) for T4. and T7 respectively .However both the treatments were at par were found to be at par during the analysis of days to colour break stage and days to full bloom. The highest flower size (17.33cm), highest number of petals (253.00), longest flower stalk (33.66cm) were recorded in treatment T4 which was followed by T7 respectively. Likewise the highest fresh weight (64.77g), highest dry weight (5.32g) was found in T4 .The treatment T4 further exhibited maximum flower duration from 1st bloom to last bloom (25.74days), highest self life (25.33days) and highest vase life (17.33days) followed by T7 respectively. Among the physiological parameters, the highest total chlorophyll content in leaf, highest LRWC, minimum Lipid peroxidation was recorded for T4 was found to be at par with T7. Further T4 exhibited maximum NAR highest LAD, significantly differing from each other. Soil parameters studies revealed that highest value for soil pH, OC, N, P, K, MBC and various soil enzyme activities were found highest in T8. Economics of production revealed that the highest B:C ratio of 2.80 was observed in the treatment T4 followed by 2.33 in T7. Hence considering the positive effect on growth, yield, quality and soil health, T4 and T7 both can be considered best for adopting at the field level to reap good economic yield with better quality, sustained soil health and high net return.