Integrated Nitrogen Management in Garlic (Allium sativum L.)
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Date
2022
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Abstract
Field experiments were conducted under loamy sand soil during rabi seasons of 2020-
21 and 2021-22 at the Horticulture farm, S.K.N. College of Agriculture, Jobner. The
experiment comprising six treatments of nitrogen management through organic manure,
inorganic fertilizer and biofertilizer (100 % inorganic fertilizer without biofertilizer, 100 %
inorganic fertilizer with biofertilizer, 75 % inorganic fertilizer, 25 % organic manure without
biofertilizer, 75 % inorganic fertilizer, 25 % organic manure with biofertilizer, 50 % inorganic
fertilizer, 50 % organic manure without biofertilizer and 50 % inorganic fertilizer, 50 %
organic manure with biofertilizer) were assigned to main plots and four levels of nano urea (0,
25, 50 and 75 ml/ha) in sub plots and replicated thrice in split plot design. Garlic variety ‘G 282’ was used as a test crop.
On the basis of two year results, application of 100 % inorganic fertilizer and
biofertilizer combined with foliar spray of 75 ml/ha nano urea was proved the most superior
treatment combination in garlic representing the significantly higher net returns (` 482860/ha)
and bulb yield (194.80 q/ha). However, application of 75 % inorganic fertilizer, 25 % organic
manure and biofertilizer combined with foliar spray of 50 ml/ha nano urea was also found
equally effective treatment combination and fetched at par bulb yield and net returns.
Based on response studies, foliar spray of 66 ml/ha nano urea was found to be the
optimum level of N for garlic crop.
Further, it may be concluded that application of 75 % RD through inorganic fertilizer,
25 % organic manure and biofertilizer combined with foliar spray of 66 ml/ha nano urea is
worth recommendable for farmers of Rajasthan Zone IIIA under loamy sand soil to get
significantly better yield (q/ha) net returns (₹) and maximum B:C ratio from garlic crop.