In this system land area allocated to crops of different growing duration on the basis of long term probabilities of soil moisture. Research conducted at OCS Haryana Agricultural University, Hisar allocating 40% of land to guar U 20 d durational. 40% to pearl millet (70 days) and 20% to mungbeen (50 days) enabled to harvest all three crops in good rainfall years and at least two crops in all but severe drought years (Virmani, 1989). Thus, proportionate cropping can help to decrease the risk of loss and increase over all productivity.
Moisture deliverinacy and cropping system:
In covered and rained regions because of combined effect of variable rainfall. High Evapotranspiration rates and poor water tolding capacity of soils crops are often exposed to suhoptimal moisture availability our mg our or more capital plenological stages of crop growth. The adverse effect of moisture deficiency can be minimized by choosing crop or crop varieties with duration appropriately fitting to moisture availability periods (Table B).
Table8. Potential cropping systems in relation to rainfall and soil type.
350 – 600
Alfisols and shallow
Single Water if crop
350 – 600
Aridisols and Entisols
Single crop enther
water if or ran
350 – 600
Single ran crop
600 – 750
Alfisols and entisols
20 – 30
750 – 900
Entisols, deep Vertisols
Double cropping with
0 – 900
Entisols, deep Vertisols.
(Source: Katyal et al., 1994)
Contingent crop planning:
Weather aberrations are important features of deyland agriculture. One season seldom matches with another. As such every year poses a new situation. It if therefore, not enough to develop the tectrology for normal weather conditions but strategy needs to be developed for aberrant weather suitability. In fact these aberrations are the part of the propping situations.
Analysis of weather data and crop conditions at Solapur reveals that out of a years, 3 years are normal and ? Years are abserval in scar rate tract. Water delayed onset of monsoon 20 – 30% of the total cropped area team.
Table 9. Contingent crop planning on shallow and medium deep sols (45 cm depth) of scarcity zone of Maharashtra.
On set of monsoon
Pearl millet, sorghum, pigeanpea, sunflower, green
gram black gram, proundnut, horse gram, kindney bean,
castor, etc. and intercroppings.
Pearl millet, sorghum, horsegram, kidney bean, pigeon pea,
groundnut, sunflower, castor etc. & intercroppings
Pigeonpea, sunflower, horse gram, kindney bean castor
Pigeonpea, sunflower, horsegram, castor.
Pigeonpea, sunflower, castor
Rabi sorghum (M – 35 – 1) for fodder or selection 3 for
(Source : Patil et al., 1981)
monson for shallow to medium deep soils of scarcity tract of Maharashtra (Table 9).