Studies on Seed Production of Broccoli (Brassica oleracea var. italica) under Organic Management
Loading...
Date
2021-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
To find out the effect of different biofertilizers, organic manures and bio pesticides on growth, yield and seed quality of broccoli, a field-experiment entitled “Studies on seed Production of broccoli (Brassica oleracea var italica) under organic management” was conducted at Vegetable block, OFRC. Chatha, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, during rabi season of 2020-21 The experiment was conducted in RCBD (factorial) consisting of 03 factors viz, biofertilizers at three levels, organic manure and bio-pesticides each at two levels respectively. There were 12 treatments combinations which were tried on to the crop with three replications. Application of biofertilizers was done as seedling dip whereas FYM was applied as basal dose to the crop Vermicompost was applied at the time of earthing up operations and bio pesticides were sprayed at different stages of crop growth. Initially the experimental field was slightly alkaline in reaction (pH, 7.79), but low in organic carbon (0.6 %), available nitrogen (194.7 kg/ha) and available potassium (175.4 kg/ha) but medium in phosphorus (18.1kg/ha).
Results depicted that among biofertilizer BF-I (Azotobacter + Phosphate Solubilising Bacteria + Potassium Mobilising Bacterial) recorded significantly higher growth parameters (plant height, plant spread, days to 50% curd initiation and days to 50% curd maturity). It gave maximum curd yield and seed yield as compared to other treatments. Soil macro nutrients like available N, P and K was also found influenced significantly by this treatment.
In case of organic manures, FYM recorded significantly higher growth parameters (plant height, plant spread, days to 50% curd initiation and days to 50% curd maturity) and curd and seed yield as compared to other treatments of organic manures. It also influenced soil macro nutrients like available N, P and K
Among bio pesticides (Neem oil + Baeuveria bassiana) recorded lowest incidence of diseases (curd rot and black rot) and in case of insect pest (NSKE + Baccillus thruingenesis (BT)) recorded lowest (cabbage semi-looper and cabbage butterfly) population as in broccoli under organic management. Non-significant response was however recorded for soil macro nutrients.
Among different interactions, BF-I (Azotobacter + Phosphate Solubilising Bacteria + Potassium Mobilising Bacteria) in combination with OM 2 (FYM) and BP-1 (Neem oil + Baeuveria bassiana) was found superior in obtaining maximum growth, yield, and insect pest and disease management significantly as compared to other combinations. Non- significant response was however recorded for soil macro nutrients
Hence, based on one year study, it can be concluded that application of FYM @ 25 t/ha as a basal dose, seedling dip treatment of biofertilizers (Azotobacter @ 0.5 kg/ha + Phosphate Solubilising Bacteria @ 1.0 l/ha + Potassium Mobilsing Bacteria @ 750 ml/ha) along with the scheduled application of Neem oil + Baeuveria bassiana 1, 3, 7, 15 days interval after disease symptoms was found superior in obtaining higher , curd yield (109.57 q/ha) and seed yield (604.96 kg/ha). This treatment played a vital role in combating disease and insect/ pest management in broccoli under organic management.
Description
Keywords
Citation
Preferred for your workKumar, A. 2021. Studies on Seed Production of Broccoli (Brassica oleracea var. italica) under Organic Management.M.Sc. Thesis, SKUAST-JAMMU