Potential of Opportunity Double Cropping with Short Duration Legumes in the Rabi Sorghum Areas of India uri icon

abstract

  • In rabi sorghum growing region of India the soils are kept cultivated fallow during rainy season and sorghum is grown during post-rainy season. The fallow soils are exposed to run-off led soil erosion during rainy season and thus get degraded overtime. There is scope for double cropping with short duration legumes in some years provided soil water availability is to provide sufficient length of growing season (LGS) for two crops. The historical weather data was analysed for LGS by using soil water balance approach. In this study, LGS is characterized for 11 spatially well districted locations in the rabi sorghum region of India. The results show that locations in the decreasing order for suitability of opportunity double cropping on deeper soils (available water holding capacity=200 mm) are Parbhani, Pune, Aurangabad, Nanded, Akola, Solapur, Gulbarga, Beed and Osmanabad. At Parbhani opportunity double cropping would be successful for 55% at least half the years, whereas at Osmanabad it would be successful for 25% of the years on an average. Bellary and Bijapur are not suitable for double cropping with short duration legumes. The potential for double cropping at a location is greater if soils have high water holding capacity and rainy season starts early

publication date

  • 2000