No abstract

Based on the result of an experiment conducted from 1978-86 during post-rainy crop season at Solapur, crop coefficients for sorghum during different stages of growth were determined. A model has been developed for relating consumptive use of water at different phenological stages in relation to climatic parameters and crop water needs. The extent to which water requirements of the crop are met and water use efficiency have been discussed. The water requirement appears to be maximum at tasseling/flowering phases of sorghum growth. It works out at 4 mm per day under Solapur environment. The seasonal rainfall in post-rainy season does not appear to furnish a reliable estimate of the yield.  

In the present study, evapotranspiration and other agrometeorological data for three different locations, viz., Akola. Bellary and Kovilpatti have been utilized to understand consumptive use and related aspects of cotton. Ratios of evapotranspiration to potential evapotranspiration (ET/PET) and evapotranspiration to total shortwave radiation (ET/Rs) increase gradually as the vegetative cover develops and shows year to year variation at same location. The energy summation indices have been worked out for all the three stations which indicate that the total yields are more dependent on consumptive water use by crop rather than energy summation indices.. The water use efficiency (WUE) of cotton crop also reveals wide variations in time and space.

In Ihi.-.l>1U.1Yt"lItXI uf .tt"w'lrlll.H.i l..sun th e i:fll" ,h cycle ofwheat and its yield h ave bee n examinedfur sh .o.c,.lt'l1l'.1 ~\tH~i ll1:'l·ml.;nllloc41linns in Ind ia. viz.. I IIsar. Gwalior, Vuran nsi. Jab alpur. Raipur and Pune. The d at a"'t"t varied Imm I ~ III 15 years.TIl e" JOlla we re MJb;.·..:h~·11 11l Fb hc r's tec h niq ue and pe riods when dew exe n ed beneficialor baneful effect . iJt"1I1iliC'.1.TIl(' SIIIlI)' iudicmea th at dew i!t'ncraJl) helps th e emergence ofwheat. De wfall from jointinglul1l1wt'rin1!A1uul!'h Sl"~(, helps in proper dt'w lup lllt" ni ofthe plllni und increase in yield . Subject ing lilt' dat atopnlh OIlull)si... h lulIght out h igh associntiou betw een relative h umidit y and );t"IJ . II also revealed th at, h y and large.dew l l i rrl 'll)' ur indirectly contritnues In inc rease wheat yield .

In this study. the agrometeorological data of Hisar and Bellary have been utilized to  examine evapotranspirative demand of the pearl millet at different phases during the crop growing period.Water use efficiency of the crop has also been worked out and discussted. Cumulative soil moisture balance was computed to assess the crop stress situation, Attempt has also been made to assess the moisture availability to the crop during the growing period and to estimate the yield, The study revealed that the pearl millet used maximum amount of water during the flowering stage at both locations. The same variety of pearl millet was found to use water more efficiently at Hisar than at Bellary. The yield index based on soil moisture balance technique was found to give a good indication of the yield.