Suresh, K.R. and Nagesh, M.A. (2007) Experimental study of water stress on crop yield: a case study of maize crop. International Journal of Applied Agricultural Research, 2 (1). pp. 97-108.
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Abstract
The maximum yield level of a crop is primarily determined by its genetic characteristics and how well the crop is adopted to the prevailing environment. Environmental requirements of climate, soil and water for optimum growth and yield vary with crop and crop variety. Maximum yield of a crop is defined as the harvested yield of a high-producing variety, welladapted to the given growing environment, including the time available to reach maturity, under conditions where water, nutrients and pests and diseases do not limit yield. The demand for water by the crop must be met by the water in the soil, via the root system. The actual rate of water uptake by the crop from the soil in relation to its maximum evapotranspiration is determined by the whether the available water in the soil is adequate or whether the crop will suffer from stress inducing water deficit. When water deficit occurs during a particular part of the total growing period of a crop, the yield response to water deficit can vary greatly depending on how sensitive the crop is at the growth period. In general, crops are more sensitive to water deficit during emergence, flowering and early yield formation than they are during early and late growth periods (ripening). In this paper an attempt is made to study the yield response to crop water stress for different readily available moisture levels for Maize crop. From the results, it is observed that the maximum yield was achieved corresponding to the depletion coefficient of 0.5 compared to a depletion coeffient of 0.75, maintaining all other factors same. Keywords: Evapotranspiration, field capacity, wilting point, depletion
| Item Type: | Article |
|---|---|
| Author Affiliation: | Assistant Professor, Research Scholar BMS College of Engineering, Bangalore-560019, India |
| Subjects: | Plant Production > Production Practices |
| Divisions: | Maize |
| Depositing User: | David T |
| Date Deposited: | 15 Nov 2010 22:41 |
| Last Modified: | 29 Dec 2010 20:32 |
| Official URL: | http://eprints.icrisat.ac.in/cgi/users/home?screen... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/627 |
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