Consumptive use pattern of mustard (Brassica Juncea L) under different soil and climatic environments

Abstract

Mustard is an important cash crop in north India where it is widely grown under different climatic environment and soil types. In the present study, evapotranspiration and other agro-meteoralogical data for four agroclimatic locations, viz., Jorhat, Samakhunta, Raipur and Jodhpur have been utilized to understand consumptive use and related aspects of mustard. The evapotranspiration values recorded by  lysimeters, global radiation and actual soil moisture data of Jorhat and the computed soil moisture have been used.

            The study suggests that the nlustard plant uses n10re water at all the stations except at humid location where consumptive use is least. The utilization is n1aximum betw~n 31-60 days after sowing in case ofJorhat

l;er 111 and Samakhunta. The con1puted soil 1110isture estimates for 45 cm layer agree with the actual soil moisture.

15-1 The analysis also brings oUt that during the seventh week after sowing, the ratio of consumpiive use and

rti. Ru Ilobal radiation attains a nlaxin1um value. This infonnation can be used for detennining irrigation needs and

ular m computing energy balance components in the crop.

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