THE EVAPOTRANSPIRATIVE DEMAND AND WATER USE EFFICIENCY OF MAIZE CROP (ZEA MAYS L.) IN THE SEMI-ARID TRACT OF INDIA
DOI:
https://doi.org/10.54302/mausam.v45i4.2645Keywords:
Maize. Evaporation, Evapotranspiration, Solar radiation, Water use efficiency, Weeks after sowing, FloweringAbstract
Mai ze is an Impo rta nt component o f th e d ry lau d fanning system o f India. In th e present study.
d ata fur five years' period for three 51ation s. viz.. New Delhi. Rajendran agar an d Bellary in th e dry farm ing tr act of
Ind ia have been iuili zed to und erstand evapotra nspira tive deman d of the crop in relat ion to pan-evaporat ion , and
solar rad iation. Biomet ric cha racte ristic. e.g.. heil:ht ofthe pla nt has also been analysed \'U-U-I';S meteorological facton.
' V,lIer use efficie ncy of maul," has also been workedout nnd discu ssed .
Th e analysis indica ted th ai th e maize plant uses maximum water during the flowering stage. Th e ETJEP rati o
gradu ally in creases fmm germination aua ining a maximum value 8 to 10we eks after sowing.Th is ratio is found 10 be
signilican tl)' correlated with the plan t height . The ETIR, curve was found 10 follow a sigm oid patt ern reac hing
maximum during flowering stage. Th e water use efficiency of maize crop vari es ove r wide margins in lime
and space.
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