Ujah, J.E. and Adeoye, K.B. (1984) Effects of shelterbelts in the Sudan savanna zone of Nigeria on microclimate and yield of millet. Agricultural and Forest Meteorology, 33 (2-3). pp. 99-107.
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Abstract
Results of field experiments to measure the influence of shelterbelts of Eucalyptus camaldulensis with an av. height of 10 m on wind velocity, air and soil temp., soil moisture and yield of millet in a semiarid environment are presented. The shelterbelt reduced wind velocity (measured 2 m above the ground surface) on the leeward side. The reduction in wind velocity ranged from 20 to 10% at distances of 20 and 150 m, resp., from the belt. Max. air temp. were 0.8-1.5°C higher 20 m from the belt on the leeward side than in the open field. Min. temp. however, were of the same magnitudes in both open and sheltered areas. It is estimated that the moderating influence of the belt on wind extends to a distance of 15 times the height of the trees, while the effect of the belt on air temp. does not extend beyond 10 times the height of the trees. Influence of the shelterbelt on soil temp. was minimal. Max. soil temp. at 5 cm depth were 0.5-1.0° higher close to the belt than in the open. The shelterbelt had little influence on soil moisture during the rainy season but immediately following the end of the rains, moisture depletion from the top soil was more rapid on the unprotected side than on the leeward side as the higher wind speeds on the unprotected side accelerated evaporation. Millet yield was higher in the sheltered area than in the open with peak yield observed at a distance of 4 times the tree height
| Item Type: | Article |
|---|---|
| Author Affiliation: | Dep. of Soil Sci., Ahmadu Bello Univ., Zaria, Nigeria |
| Subjects: | Atmosperic Science > Climatology Crop Improvement |
| Divisions: | Millet |
| Depositing User: | Mr B Krishnamurthy |
| Date Deposited: | 27 Jun 2012 06:46 |
| Last Modified: | 27 Jun 2012 06:46 |
| Official URL: | http://dx.doi.org/10.1016/0168-1923(84)90063-7 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/6233 |
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