Asare, D.K. and Frimpong, J.O. and Ayeh, E.O. and Amoatey, H.M. (2011) Water use efficiencies of maize cultivars grow under rain-fed conditions. Agricultural Sciences, 2 (2). pp. 125-130.
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Abstract
Enhancing water use efficiencies of rain-fed maize is a requirement for sustainable maize production, particularly in areas prone to low/ drought and erratic rainfall patterns. This study was conducted to assess the relationship be-tween total biomass/grain yield and water use efficiencies of three maize cultivars (Golden Crystal, Mamaba and Obatanpa) grown under rain-fed conditions in a coastal savannah agro- ecological environment of Ghana. Results of the study showed that a unified linear model, WUETDM = 0.03 TDM with R2 = 0.765 and P ≤ 0.001, described adequately the relation be-tween water use efficiency and total biomass (dry matter), which is applicable for the three maize cultivars for both the major and minor cropping seasons. A linear model could only, however, describe adequately well the relation between WUEGY and GY for the major (WUEGY = 0.001 GY – 0.67; R2 = 0.996; P ≤ 0.001) and minor (WUEGY = 0.002 GY + 0.289; R2 = 0.992; P ≤ 0.001) cropping seasons for all the maize cultivars. The linear models developed for the maize cul-tivars, relating WUEGY to GY, are specific to each of the crop growing seasons, indicating that seasonal rainfall impacts significantly on harvest index of the maize cultivars but differ-ently in each of the crop growing seasons as a results of differences in seasonal rainfall. How- ever, the models could be used to estimate wa-ter use efficiencies of each of the three maize cultivars given the appropriate TDM and GY as inputs for the environment under which the study was conducted.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Plant and Soil Sciences, Biotechnology and Nuclear Agriculture Research Institute, Ghana Atomic Energy Commis-sion, Legon-Accra, Ghana; |
| Subjects: | Plant Production > Farming Systems |
| Divisions: | Maize |
| Depositing User: | David T |
| Date Deposited: | 15 Jul 2011 03:08 |
| Last Modified: | 15 Jul 2011 03:08 |
| Official URL: | http://dx.doi.org/10.4236/as.2011.22018 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/2356 |
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