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Reprint - Central Arid Zone Research Institute

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61 Singh, R.S. and Ramakrishna, Y.S. (1993)A climatic method for optimising cropping patterns in arid Kutchregion. Annals of <strong>Arid</strong> <strong>Zone</strong>. 32: 51-54A climatic method is described for optimising cropping patterns onthe basis of mean length of the growing season as related to thedistribution of annual rainfall. Application of the method for Bhujregion in the Kutch district reveals that, for optimised andsustainable production, about 32% of the total agricultural landshould be covered by grasses or silvipastoral system compared toonly 11% area under grasses at present. The method of optimisingthe area allocation for the different crops that can providesustainable production from a given farm area is also discussed.62 Singh, R.S., and Ramakrishna, Y.S. (1994)Estimation of crop yield from arid Kutch (Gujarat) region usingactual evapo-transpiration through climatic water budgeting.Mausam. 45 : 93-95Yield estimation of various kharif crops, viz., groundnut, pulses andsorghum in Kutch district of Gujarat state is worked out for theperiod 1970-1984 by fitting reciprocal hyperbola and Hoerl function.The Hoerl function indicates that maximum yield of groundnut (10.6q/ha), kharif pulses (5.5 q/ha) and sorghum (4.2 q/ha) can beobtained at water use of 465, 357 and 327 mm, respectively, underrainfed situation. Suitability and performance of these models arealso discussed for estimation of crop yield.63 Singh, R.S., Ramakrishna, Y.S. and Purohit, R.S. (1991)Rainfall characteristics analysis of Kutch (Gujarat) region of India.Annals of <strong>Arid</strong> <strong>Zone</strong>. 30: 93-100The rainfall characteristics analysis of Kutch district (Gujarat) Indiabased on the rainfall data of 12 stations for the period, of 1901 to1989 revealed that the rainfall has decreasing trend from SW regionto NE region. Probability of weekly rainfall distribution worked outby ranking order method revealed that interior part of the district ismore prone to drought conditions as compared to coastal plains.Most of the stations had recorded highest observed rainfall valuesnearer to the estimated rainfall of 100 years return period except atBhuj, Anjar and Rahapur.64 Singh, R.S., Ramakrishna, Y.S., Bhandari, C.S. andPurohit, R.S. (1991)Rainfall potentials for crop growing in arid Kutch region. Annals of<strong>Arid</strong> <strong>Zone</strong>. 30: 101-106

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