STUDIES ON THE EFFECT OF NUTRIENT SOURCES ON CUTTING PRODUCTION AND ROOTING IN CHRYSANTHEMUM (Dendranthema grandiflora Tzvelev)
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Date
2020-03
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NAUNI,UHF
Abstract
ABSTRACT
The present investigation on the effect of nutrient sources on cutting production and rooting in
chrysanthemum (Dendranthema grandiflora Tzvelev) was carried out at Experimental Farm of
Department of Floriculture and Landscape Architecture, Dr YS Parmar University of Horticulture and
Forestry, Nauni, Solan (H.P) during 2018-2019 under a naturally ventilated polyhouse with the
objective to find out the effect of nutrient sources on cutting production and rooting in
chrysanthemum cultivars. The experiment was laid out in Randomized Block Design (factorial) with
five treatments on three commercial chrysanthemum cultivars replicated thrice. Vermicompost, full
doses of P and K and half dose of N were incorporated into the beds one week before planting
according to the treatment. The remaining half dose of nitrogen was applied after 30 days of planting.
Azotobacter and PSB were applied by dipping the roots of the cutting into a slurry of 200g of the
inocula dissolved in one litre of 10% sugar solution at the time of planting whereas VAM (2 g/plant)
was applied directly into the planting pit. Besides the application of basal dose of N, P, and K, a single
dose (100 ppm) of N and K was also applied through fertigation twice a week. Cow urine was sprayed
once in a week @ 5% and jeevamrit (5%) was given at 15 days interval @ 250ml/plant as soil
drenching.The results revealed that minimumtime for cutting production (25.67 and25.33 days in 2nd
and 4th harvest), maximum number of cuttings/plant/harvest (26.83, 32.83, 36.50 and 52.50 in all four
harvests, respectively), total number of cuttings/plant (142.67), yield of cuttings/m2 (670.83, 820.83,
912.50 and 1312.50 in all four harvests, respectively), minimum days for rooting (20.00 and 18.17
days in 3rd and 4th harvest, respectively), maximum number of roots (36.89 and 34.78 in 3rd and 4th
harvests, respectively), maximum weight of rooted cuttings (2.04 g in 3rd harvest), maximum
percentage of healthy rooted cuttings (98.55 % in 4th harvest) and intense green colour of leaves
(YGG 147 A) were recorded with the application 22.5 g/m2 each of NPK + biofertilizers +
vermicompost (1 kg/m2) + FYM @ 5 kg/m2 (as basal) along with N & K 100 ppm as fertigation twice
a week (T2). The nutritional treatment T3 comprising of cow urine (5%) resulted in maximum fresh
weight of cuttings (3.21 and 2.12 g in 2nd and 3rd harvest, respectively) and maximum root length
(3.91 cm in 3rd harvest). The cutting yield and rooting response of commercial chrysanthemum
cultivars was noted in T2.