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The Effect of Grass Strips on Terrace Development and Crop Yield

 

作者:

 

期刊: East African Agricultural and Forestry Journal  (Taylor Available online 1999)
卷期: Volume 65, issue 1-2  

页码: 79-83

 

ISSN:0012-8325

 

年代: 1999

 

DOI:10.4314/eaafj.v65i1.1759

 

出版商: Taylor & Francis

 

数据来源: Taylor

 

摘要:

The study was conducted on a humic Nitisol at Kabete Field Station, College of Agriculture and Veterinary Sciences, University of Nairobi, Kenya to assess the effect of seven different grass strips on terrace development and maize yield. After nine years of establishment, donkey grass (Panicum trichocladum) was the best in bench development with 6.2% mean slope followed by creeping signal (Brachira humidicola) (5.1%). Bana (Pennisetum purpureum) (4.7%), tall signal (Bracharia ruziziensis), and Guatemala (4.2%), tall guinea (Panicum maximum) (4.0%) and lastly Makarikari (Panicum coloratum var. Makarikarienses) grass (1.8%). Bana and tall guinea grasses significantly (P = 0.001) decreased maize plant heights and yields on the lower and upper terrace positions due to their competitive effects. Maize grain yield was 1.2 t ha−1in the lower terrace position, 2.4 t ha−1in the middle and 1.4 t ha−1in the upper terrace position of bana. Tall guinea terrace maize grain yields were 0.9 t ha−1in the lower position, 2 t ha−1in the middle and 1 t ha−1in the upper position. Yield differences among positions for Makarikari, creeping signal, Donkey and Guatemala grasses were not significant. Of the grasses evaluated, bana and tall guinea would be more appropriate for farmers who are confronted by conservation needs and require fodder for animals.

 

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