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Participatori on-farm trials on weed control in smallholder farm in maize-based cropping systems

By: Muthamia, J.G.M | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) Kenya | 7. Proceedings of the Eastern and Southern Africa Regional Maize Conference Nairobi (Kenya) 5-11 Feb 2002.
Contributor(s): Amboga, S [coaut.] | Friesen, D.K.|Palmer, A.F.E [eds.] | Maina, J.M [coaut.] | Muriiithi, F [coaut.] | Musembi, F [coaut.] | Okuro, J.O [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Nairobi (Kenya) KARI|CIMMYT : 2002Description: p. 468-473.ISBN: 970-648-120-6.Subject(s): Cropping systems | Food crops | Herbicides | Kenya | Maize | Production policies | Small farms | Trial methods | Weed control | CIMMYT | KARIDDC classification: 338.16 Summary: Maize and beans are the major food crops in the Central and Eastern Highlands of Kenya. Smallholder farmers Either grow maize and beans as intercrops or as sole crops while intercropping is more prevalent. However, the gradual shift from sole crop maize to intercropping maize and beans has generated considerable demand on farm labour. Use of mechanized or semi-mechanized production methods such as oxen drawn plough is limited due to small farm size and uneven land terrain and is rarely practised in the main maize growing zones. Herbicide use in maize production systems in the Eastern and Central Highlands is therefore an alternative technology for resolving the labour problem. To test the hypothesis and scale up the herbicide use technology, experiments comparing hand weeding versus herbicide use in sole crop maize and intercrop maize and beans were carried out in two districts (Kiambu and Embu) involving farmers within randomly selected villages in maize growing areas. Each farmer was to compare the performance of the crop, control of the weeds, time taken for each operation (spraying, "ceding, planting, etc.), grain yield (maize and beans), costs of inputs, and price of maize and bean under each weed management method. Size of plots were 500 m2. Lasso/Atrazine at 5.0 lt ha1 \Vas used for sole maize and Lasso + Linuron (3 lt ha1 + 1.75 kg ha1 products) were used for the intercrop. Hand weeding was done 2-3 times in the conventional plot. Weed assessment was done by counting the number of weeds per m2 and the fresh weight of the weeds (separated by species and then totaled up). The data were then subjected to statistical analysis. Results showed that herbicides controlled weeds better than hand-weeding, the maize crop was more vigorous in growth, matured earlier, had higher grain yield (for both maize and beans), required less labour, and had higher net henefits than the hand-weeded plots. The major drawbacks to uptake of herbicide technologies among smallholder farmers included lack of knowledge on the use of herbicides, unavailability of the herbicides at the local markets and high Cost of herbicides. In most cases the herbicides were only available in large containers suitable for large-scale farmers and not appropriate for the smallholder sector.Collection: CIMMYT Publications Collection
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Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 338.16 FRI (Browse shelf) 1 Available 2E630188
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Maize and beans are the major food crops in the Central and Eastern Highlands of Kenya. Smallholder farmers Either grow maize and beans as intercrops or as sole crops while intercropping is more prevalent. However, the gradual shift from sole crop maize to intercropping maize and beans has generated considerable demand on farm labour. Use of mechanized or semi-mechanized production methods such as oxen drawn plough is limited due to small farm size and uneven land terrain and is rarely practised in the main maize growing zones. Herbicide use in maize production systems in the Eastern and Central Highlands is therefore an alternative technology for resolving the labour problem. To test the hypothesis and scale up the herbicide use technology, experiments comparing hand weeding versus herbicide use in sole crop maize and intercrop maize and beans were carried out in two districts (Kiambu and Embu) involving farmers within randomly selected villages in maize growing areas. Each farmer was to compare the performance of the crop, control of the weeds, time taken for each operation (spraying, "ceding, planting, etc.), grain yield (maize and beans), costs of inputs, and price of maize and bean under each weed management method. Size of plots were 500 m2. Lasso/Atrazine at 5.0 lt ha1 \Vas used for sole maize and Lasso + Linuron (3 lt ha1 + 1.75 kg ha1 products) were used for the intercrop. Hand weeding was done 2-3 times in the conventional plot. Weed assessment was done by counting the number of weeds per m2 and the fresh weight of the weeds (separated by species and then totaled up). The data were then subjected to statistical analysis. Results showed that herbicides controlled weeds better than hand-weeding, the maize crop was more vigorous in growth, matured earlier, had higher grain yield (for both maize and beans), required less labour, and had higher net henefits than the hand-weeded plots. The major drawbacks to uptake of herbicide technologies among smallholder farmers included lack of knowledge on the use of herbicides, unavailability of the herbicides at the local markets and high Cost of herbicides. In most cases the herbicides were only available in large containers suitable for large-scale farmers and not appropriate for the smallholder sector.

English

0410|AGRIS 0401|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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