Varuna rapeseed mustard better yield by zinc, boron and sulphur application
2002
Sakal, R. | Sinha, R.B. | Singh, A.P. (Rajendra Agricultural University, Samastipur (India))
Multilocational demonstrations in farmers' field were conducted to evaluate the response of rapeseed mustard to zinc (Zn), boron (B) and sulphur (S) application in calcareous soils of north Bihar. Available Zn, B and S in the initial soils ranged from 0.35 to 0.64, 0.27 to 0.33, and 3.3 to 8.0 mg/kg, respectively. Application of Zn @ 5 and 10 kg/ha in cv Varuna produced the seed yield response ranging between 300 and 500, 450 and 700 kg/ha, respectively. Increasing level of Zn progressively increased the Zn-uptake by crop. Addition of B @ 2 kg/ha exhibited the grain yield response ranging between 350 and 500 kg/ha and total B-uptake varying from 173 to 201 kg/ha. Seed yield response at 20 and 40 kg S/ha ranged from 200 to 350, and 400 to 500 kg/ha with corresponding percentage yield response varying from 17 to 23, and 29 to 38, respectively. Sulphur uptake increased in accordance with rising levels of S. The application of micro-and secondary nutrients injudicious amount is imperative to enhance the productivity of rapeseed mustard.
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