Irrigation Indicators of Land Forms on the Vertisols of Ghana
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概要
- 論文の詳細を見る
The irrigation indicators of three land forms (viz. : flat plots, ridges and camber beds) developed on the Vertisols of the Accra Plains of Ghana are studied using a legume (i. e., cowpea) and a cereal (i. e, maize) as test crops. The water requirements of the test crops are monitored by a combined simultaneous utilization of soil and plant parameters : (1) soil moisture (2) leaf-water potential. Differences in the bulk densities of the three land forms (viz. flat plots (F), ridges R and camber beds (CB)) are 1.41-1.48, 1.39-1.43 and 1.26-1.37 Mg/m^3, respectively, with F having the highest bulk density and CB the least. The soil moisture content of the three land forms measured by Thetaprobe after 24 hours of irrigation follows the sequence of the bulk densities, i. e, F: 26-27, R : 24-28 and CB : 20-28 %(g/g). While test crops show very little differences in leaf-water potential across land forms (i. e, cowpea : F : 6.5, R : 6.3 and CB : 6.5 bars, and maize : F : 5.5, R : 5.8 and CB : 6.0 bars), cowpea appears to be more drought prone than maize. Leaf-water potential has an inverse relationship with soil moisture for both test crops, thus indicating that it could conveniently be used to determine the water status of crops.
- 日本雨水資源化システム学会の論文
著者
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Yangyuoru M
College Of Agriculture & Consumer Science Arc-kpong University Of Ghana
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Kawachi Toshihiko
Graduate School Of Agricultural Kyoto University
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Yangyuoru Macarius
Faculty of Agriculture, A. R. S. Kpong, University of Ghana
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Oteng John
Faculty of Agriculture, A. R. S. Kpong, University of Ghana
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Acquah D.
Faculty of Agriculture, A. R. S. Kpong, University of Ghana
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Oti-Boateng C.
Faculty of Agriculture, A. R. S. Kpong, University of Ghana
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Oteng John
Faculty Of Agriculture A. R. S. Kpong University Of Ghana
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Acquah D.
Faculty Of Agriculture A. R. S. Kpong University Of Ghana
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Yangyuoru Macarius
Faculty Of Agriculture A. R. S. Kpong University Of Ghana
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