Analysis of rainfall for crop planning in Jhansi district of Bundelkhand zone of Uttar Pradesh
2011
Chand, Mukesh | Kumar, Dushyant | Singh, Dhananjai | Roy, Nishi | Singh, D. K.
The historical rainfall data for the period of 34 years (1975-2008) of Jhansi in Bundelkhand agro climatic zone of U.P. were analyzed to know weekly, monthly, seasonal and annual probabilities at different levels of rainfall for suitable crop planning. The analysis revealed that 90.3 % of the total annual rainfall is received during SW monsoon months (June- September) with high intensity causes moderate to severe erosion. Post monsoon or winter months (October to February) account 7.1 % while pre monsoon or summer months (March -May) accounts 2.6 % of total yearly rainfall. Analysis also showed that the frequency of drought has been increased since the year 2000 onwards in the zone. The maximum amount of rainfall is received during August (286.0mm) and minimum in April (3.1mm) month. Occurrence of 70 % of initial probability of a dry week from 1 to 24ᵗʰ week and the conditional probability of wet week preceded by a wet week is also high from 26ᵗʰ to 37ᵗʰ week. The Kharif season crops and their varieties may be chosen with the growing period to avoid moisture stress as well as In-situ moisture conservation practices like mulching, use of anti-transpirants, control of weeds, adequate plant stands should be adopted and to mitigate the effect of dry spell during critical crop growth stages provide live saving or supplemental irrigation through use of sprinkler system. The sowing of rainfed crops in rabi season may be completed between 40ᵗʰ to 41ⁿᵈ standard week because subsequent week has rare chance to get rains. It is also indicated that the pulses and oilseeds whose average water requirements are 300 mm could successfully be cultivated during rabi season.
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