Organic Nutrient Management in Knolkhol (Brassica oleracea var. gongylodes)

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Date
2022
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MPUAT, Udaipur
Abstract
The present study entitled “Organic nutrient management in knolkhol (Brassica oleracea var. gongylodes)” was carried out at Horticulture Farm, Department of Horticulture, Rajasthan College of Agriculture, Udaipur during rabi season, 2021-22. The experiment was made up of eleven treatments of different combination of organic inputs and these were replicated thrice before applied randomly in 33 plots under Randomized Block Design (RBD). The recommended dose of nitrogen for crop knolkhol is 90 kg/ha. The results revealed that among organic nutrient management practices application of treatment K5 (i.e. 100% RDN through compost + Jeevamrut @ 500 l/ha) was recorded with significantly highest plant height (i.e. 19.23, 30.62 and 45.62 cm on 30, 45 DAT and at harvest, respectively), number of leaves (i.e. 11.15, 15.06 and 20.51 on 30,45 DAT and at harvest, respectively), plant spread (41.53 cm), leaf area index (2.70), with minimum days taken to harvest (i.e. 60.60), and maximum equatorial and polar diameter of knob (i.e. 8.79 and 8.49 cm, respectively), fresh plant weight (319.98 g), fresh and dry weight of knob (i.e. 253.98 and 24.39 g), yield per plot (20.31 kg), yield/ha (33.86 t) and harvest index (79.37%), TSS (7.7 ºBrix), ascorbic acid (55.6 mg/100 g) and net return (Rs. 395580) while, the minimum plant height (i.e. 12.68, 19.94 and 32.92 cm on 30, 45 DAT and at harvest, respectively), number of leaves (i.e. 7.01, 10.05 and 13.18 on 30,45 DAT and at harvest, respectively), plant spread (30.53 cm), leaf area index (1.16), with maximum days taken to harvest (i.e. 71.60), and minimum equatorial and polar diameter of knob (i.e. 4.53 and 4.03 cm, respectively), knob volume (127.1 cc), fresh plant weight (224.47 g), fresh and dry weight of knob (i.e. 106.47 and 10.64 g), yield per plot (8.51 kg), yield per hectare (14.19 t) and harvest index (47.40%), TSS (5.7 ºBrix), ascorbic acid (42.9 mg/100 g) and net return (Rs.154530) was observed in treatment K10 i.e. control. Further it improved soil health and increase microbial populations. Lowest value of pH (7.28), maximum soil organic carbon (i.e. 0.77%) available soil potassium (291.85 kg/ha), maximum soil bacteria, fungi and actinomycetes population (i.e. 72.14 ×106 cfu/g, 31.64 × 104 cfu/g and 44.81 × 104 cfu/g, respectively) was noted under treatment K5 (i.e. 100% RDN through compost + Jeevamrut @ 500 l/ha). While, highest soil pH (7.61), minimum soil organic carbon (0.68%), available soil potassium (251.24 kg/ha), minimum soil bacteria, fungi and actinomycetes (i.e. 62.85 × 106 cfu/g, 21.35 × 104 cfu/g and 33.07 × 104 cfu/g, respectively) was observed under treatment K10 i.e. control.
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Organic Nutrient Management in Knolkhol
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Citation
Verma K. and Lakhawat S.S.
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