Actual evapotranspiration and crop coefficients of onion (Allium cepa L.) under varying soil moisture levels in the humid tropics of India
Year: 2003
Type: article
Abstract: Onion (Allium cepa L.) ranks second in importance after potato among the vegetables in India. Optimum irrigation scheduling for onion and its response to irrigation based on the ratio of irrigation water (IW) and cumulative pan evaporation (CPE) at 1.2, 0.9, and 0.6 were studied in a field experiment during 1994-95 and 1995-96. The site had a sandy loam (Typic Fluvaquent) soil, located in the humid tropical climate at the Central Research Farm, Gayeshpur (23° N, 89° E, and 9.75 m above mean sea level) in West Bengal of eastern India. The yield of onion, daily and seasonal actual evapotranspiration (ETa) from water balance equation, crop coefficients (Kc), soil water stress coefficients (Ks), water use efficiency (WUE), irrigation water use efficiency (IWUE), and water application efficiency (Ae) were determined. Maximum profile water depletion and ETa of onion occurred in the wetter moisture regime (1.2 IW:CPE). The average daily ETa varied from
Source: Tropical Agriculture
Authors: P. Bandyopadhyay, S. Mallick, S.K. Rana
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W175887696