Influence of maize, cowpea and sorghum intercropping systems on stem-/pod-borer infestations

Amoako-Atta, B.; Omolo, E. O.; Kidega, E. K.

doi:10.1017/s1742758400004021

Cited by 14 publications

(9 citation statements)

References 12 publications

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“…In the present trials the LERs were mostly >1 indicating that the land use efficiency was higher in inter-than monocrops but it tended to decrease with an increase of maize in the mixed cropping system. Supporting our findings, Amoako-Atta et al (1983) obtained the highest LER of 1.45 with a maize-cowpea-sorghum mixture and a LER of 1.3 with sorghum-cowpea. Chabi-Olaye et al (2005a) also consistently obtained LER values greater than those with lowest values of 1-1.35 for maize-soybean.…”

Section: Discussionsupporting

confidence: 87%

Efficacies of habitat management techniques in managing maize stem borers in Ethiopia

Belay

Foster

2010

Crop Protection

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Habitat management techniques to control maize stem borers were tested in eastern (Melkassa and Mieso) and western (Sibu-Sire) Ethiopia. These techniques consisted of using mixed cropping of maize with haricot beans at different maize:bean ratios and a ''push-pull'' (PP) strategy utilizing Napier grass as a trap plant around maize plots as the ''pull'' and Desmodium in between maize rows as a deterrent or ''push''. In Melkassa, pest infestations were too low for the cropping system to significantly affect pests, plant damage and yields while in Mieso, where the pest densities were high, intercropping of maize with beans at ratios of 1:1 to 2:1 significantly decreased borer densities compared to pure maize stands. Chilo partellus (Swinhoe) and Cotesia flavipes (Cameron) were the major stem borer and parasitoid species, respectively, recorded both at Melkassa and Mieso. Borer parasitism was higher at Mieso than at Melkassa and it tended to increase with the increase of haricot bean ratio in the intercropping system. Land equivalent ratios of >1 indicated higher land use efficiency in mixed compared to sole cropping, even if pest densities were low. Establishment of Desmodium and Napier grass in PP trials varied from site to site, and poor establishment was observed in plots with low soil pH. Where yields varied significantly, they were lower in the PP than the sole maize plots. Borer densities were low and digitalcommons.unl.edu B e l ay & F o s t e r i n C r o p P r o t e c t i o n 2 9 ( 2 0 1 0 ) 2 mostly not affected by the cropping system. However, in the second season when borer density was relatively high, higher levels of infestation and leaf feeding scores were recorded in the control than push-pull plots.

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Section: Discussionsupporting

confidence: 87%

Efficacies of habitat management techniques in managing maize stem borers in Ethiopia

Belay

Foster

2010

Crop Protection

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“…Jiang and Schulthess (2005) showed that the intrinsic rates of increase of C. partellus were ca 40% higher on sorghum than on maize and this was mostly the result of differences in fecundity. However, Amoako‐Atta et al. (1983) found higher incidence of dead‐hearts caused by stemborers on maize than on sorghum indicating differences in the susceptibility between the two crops to borer feeding.…”

Section: Discussionmentioning

confidence: 87%

The role of intercropping different cereal species in controlling lepidopteran stemborers on maize in Kenya

Songa

Jiang

Schulthess

et al. 2007

J Applied Entomology

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The effects of mixed cropping systems containing maize, sorghum, millet and beans on infestations of cereals by lepidopteran stemborers and on associated parasitoids, as well as on yields and land equivalent ratios (LER) were assessed during four consecutive rainy seasons at two sites in the semi-arid eastern region of Kenya. Systems containing the non-host bean were more efficient in reducing pest densities than those with millet or sorghum only. Higher parasitism in diversified systems compared to monocrops was due to density-dependent effects rather than superior suitability of such systems to parasitoids. The maize-bean system, which had the highest proportion of bean plants, had LERs >1.65 while most other systems had LERs <1. It is concluded that mixed cropping with several cereal species has little advantages in terms of yield loss abatement due to stemborers and land use efficiency. However, including the drought-tolerant crops such as sorghum and millet in the system stabilizes food security in drought-prone areas such as eastern Kenya.

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“…Amoako-Atta et al (1983) obtained the highest LER of 1.45 with a maize-cowpea-sorghum mixture and a value of 1.3 with sorghum-cowpea Chabi- Olaye et al (2005b). consistently obtained LER greater than one, with lowest values of 1-1.35 for maize-soybean and thus in the same range as the maize-haricot bean crop, and the highest value of >1.5 with maize-cassava mixtures.…”

mentioning

confidence: 89%

The profitability of maize–haricot bean intercropping techniques to control maize stem borers under low pest densities in Ethiopia

Belay¹,

Schulthess

Omwega

2008

Phytoparasitica

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Lepidopteran stem borers are the main pests of cereals in Ethiopia. In recent years, habitat management techniques, which aim at increasing plant biodiversity through mixed cropping, have gained increased attention in stem borer control. In the present study, the profitability of mixed cropping of maize with haricot beans at different ratios and the effect on infestation of maize by stem borers, yield and borer parasitism were studied in Melkassa and Mieso, Ethiopia, in a field experiment under natural infestation. In Melkassa, pest infestations were too low for the cropping system to affect pests, plant damage and yields significantly, whereas in Mieso, where the pest densities were high, intercropping of maize with beans at ratios of 1:1 to 2:1 significantly decreased borer densities compared with pure maize stands. Chilo partellus (Swinhoe) and Cotesia flavipes. (Cameron) were the major stem borer and parasitoid species, respectively, recorded both at Melkassa and Mieso. Borer parasitism was higher at Mieso than at Melkassa and tended to increase with the increase of the haricot bean ratio in the intercropping system. Land equivalent ratios of >1 indicated higher land use efficiency in mixed compared with sole cropping, even if pest densities were low.

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Influence of maize, cowpea and sorghum intercropping systems on stem-/pod-borer infestations

Cited by 14 publications

References 12 publications

Efficacies of habitat management techniques in managing maize stem borers in Ethiopia

Efficacies of habitat management techniques in managing maize stem borers in Ethiopia

The role of intercropping different cereal species in controlling lepidopteran stemborers on maize in Kenya

The profitability of maize–haricot bean intercropping techniques to control maize stem borers under low pest densities in Ethiopia

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