Effect of phosphorus, sulphur and phosphate solubilizing bacteria on yield, nutrient uptake and soil fertility after harvest of mustard

N. J. JADAV, J. K. PARMAR, T. V. GANGWAL, M. V. PATEL

Abstract


A field experiment was conducted to evaluate the effect of phosphorus, sulphur and phosphate
solubilizing bacteria on growth and nutrient uptake by mustard [Brassica juncea (L.) Czern
and Cosson.] grown in loamy sand soil. The experimental soil has pH 7.60 and was deficient
in available sulphur and nitrogen and medium in available phosphorus. The experiment was
tested by Randomized Block Design with four replications. The treatments comprised of three
levels each of phosphorus (0, 25, 50 kg P2O5 ha-1) and sulphur (0, 20, 40 kg S ha-1) and two
levels of phosphate solubilizing bacteria (PSB) inoculation (no inoculation and inoculation
with Aspergillus niger strain-1). The results of the experiment revealed that each successive
increase in level of phosphorus significantly increased the crop growth and uptake of nutrients.
Different levels of sulphur significantly improved the growth, yield as well as uptake of
nutrients by seeds and straw of mustard. Seed inoculation with PSB (I1) significantly increased
yield, uptake in seed and straw and availability of nutrients in soil. Combined effect of 50 kg
P2O5 ha-1 and 40 kg S ha-1 with seed inoculation with PSB gave higher seed and straw yield as
well as nutrient content in seed and straw which resulted in higher nutrient uptake by mustard
grown in loamy sand of North Gujarat.


Keywords


Phosphorus, Sulphur, PSB,Yield, Uptake, Fertility mustard

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