Estimating crop water requirements for irrigation scheduling in different crops in humid subtropical agro-climate of Western Himalayas

ARUNAVA PODDAR; VIJAY SHANKAR; NAVSAL KUMAR

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Estimating crop water requirements for irrigation scheduling in different crops in humid subtropical agro-climate of Western Himalayas

机译：Estimating crop water requirements for irrigation scheduling in different crops in humid subtropical agro-climate of Western Himalayas

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Deficiency of water in the rhizospheric area of soil results in reduced crop growth adversely affecting crop yield. Thus, the objective of irrigation is to maintain the adequate moisture content in the root zone, such that the crop yield is not adversely affected (Kumar et al. 2012; Kumar et al. 2020). However, in the current scenario of climate change, rapid industrialization and population increase, there is tremendous pressure on water resources both quantitatively and qualitatively (Rao and Poonia 2011). Hence, precise allocation of water resources considering the crop water requirement and proper knowledge of soil composition is essential to attain optimum yield, and maximum water use efficiency (Mehta and Pandey 2016). The crop water requirement is generally crop evapotranspiration (ETc) considering atmospheric water loss through plant transpiration and soil evaporation simultaneously (Kumar 2017; Poddar et al. 2021). There are several methods for direct estimation of ET. which includes energy balance, microclimatological methods, field water balance and Lysimeters. However, the indirect methods includes measurement of reference evapotranspiration and crop coefficients (Chaudhari et al.1999). Estimating water balance in the Lysimeter is themost reliable and useful approach for determining actual ET_c under field conditions (Kashyap and Panda, 2001). Hence, the present study was undertaken for rabi (Wheat, Indian mustard, Potato) and kharif (Maize, Sorghum, Guar) crops grown in a humid subtropical agro-climate of western Himalayas with a specific objective to estimate the ETc using the lysimeter water balance approach.

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《Journal of Agrometeorology》 |2021年第3期|356-359|共4页
作者
ARUNAVA PODDAR; VIJAY SHANKAR; NAVSAL KUMAR;
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作者单位

Dept of Civil Engineering, Shoolini University, Solan (HP), India;

Dept of Civil Engineering, NIT Hamirpur (HP), India;

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正文语种英语
中图分类农业基础科学;
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Estimating crop water requirements for irrigation scheduling in different crops in humid subtropical agro-climate of Western Himalayas

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