EFFECT OF BIOFERTILIZERS AND NITROGEN ON GROWTH, YIELD AND QUALITY OF CABBAGE (BRASSICA OLERACEA L. VAR. CAPITATA) CV. GOLDEN ACRE
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Date
2001
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present investigation was carried out at Vegetable Research Station, Pounichak, Jammu, Division of Olericulture and Floriculture (SKUAST-J) during 1998-99 to assess the effect of biofertilizers and nitrogen on growth, yield and quality of cabbage cv. Golden Acre. Five levels of nitrogen (0, 60, 90, 120, 150 kg ha<sup>-1</sup>) and three treatments of biofertilizers (B<sub>0</sub>, B<sub>1</sub> Azospirillum and B<sub>2</sub> Azotobacter) were taken in the experiment. The characters studied were germination percentage, seedling vigour index, plant stand, days to 50% head maturity, number of non-wrapper leaves, wrapper leaves, plant height, stalk length, gross weight of head, net weight of head, compactness of head, head diameter, yield/plot, dry matter, uptake of NPK and relative economics. Nitrogen at 120 kg ha<sup>-1</sup> + Azospirillum significantly increased the germination per cent, seedling vigour index, number of wrapper leaves, gross and net head weight, compactness of head, diameter of head and yield. The uptake of NPK was more at maximum level of nitrogen at 150 kg ha<sup>-1</sup> + Azotobacter. The application of N and its interaction with biofertilizers was found to be non significant for non wrapper leaves, however, biofertilizers viz., Azotobacter and Azospirillum significantly reduced the number of non wrapper leaves. While working out the economics N at 120 kg ha<sup>-1</sup> + Azospirillum gave the maximum net return to the tune of Rs.79450.50 with cost benefit ratio of 1:4.35 followed by treatment N at 120 kg ha<sup>-1</sup> + Azotobacter which gave the net profit of Rs.75239.50 with cost benefit ratio of 1:4.10. The applicaiton of 60 kg N/ha with efficient culture of Azotobacter had also proved beneficial over full recommended dose of nitrogen without biofertilizer by giving cost benefit ratio of Rs. 1:3.78 against Rs.l :3.72 thus saving recommended inorganic nitrogen upto 50 per cent. In addition to the application of Azotobacter alongwith 60 kg N/ha can also be recommended against full dose of nitrogen @ 120 kg/ha without Azotobacter. The investigation revealed that N at 120 kg ha<sup>-1</sup> + Azospirillum or Azotobacter application (seed treatment + seedling treatment + soil application) @ 2 kg ha<sup>-1</sup> proved to be most remunerative and profitable under subtropical conditions of Jammu Division.
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