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

Songa, J. M.; Jiang, Nanqing; Schulthess, Fritz; Omwega, C. O.

doi:10.1111/j.1439-0418.2006.01116.x

Cited by 53 publications

(33 citation statements)

References 41 publications

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“…On the other hand, intercropping with aromatic plants not only provides alternate habitats but also provides alternate food or intermediate hosts for predators, thus increasing natural enemies' population in an intercropped system [35,36]. Based on the current study's results, combined use of agronet cover and companion planting helped to lower B. tabaci infestation of tomatoes.…”

Section: Discussionmentioning

confidence: 58%

Synergistic Effects of Agronet Covers and Companion Cropping on Reducing Whitefly Infestation and Improving Yield of Open Field-Grown Tomatoes

et al. 2016

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Tomatoes (Lycopersicon esculentum Mill) are one of the biggest vegetable crops in the world, supplying a wide range of vitamins, minerals and fibre in human diets. In the tropics, tomatoes are predominantly grown under sub-optimal conditions by subsistence farmers, with exposure to biotic and abiotic stresses in the open field. Whitefly (Bemisia tabaci Gennadius) is one of the major pests of the tomato, potentially causing up to 100% yield loss. To control whitefly, most growers indiscriminately use synthetic insecticides which negatively impact the environment, humans, and other natural pest management systems, while also increasing cost of production. This study sought to investigate the effectiveness of agronet covers and companion planting with aromatic basil (Ocimum basilicum L.) as an alternative management strategy for whitefly in tomatoes and to evaluate the use of these treatments ontomato growth and yield. Two trials were conducted at the Horticulture Research and Training Field, Egerton University, Njoro, Kenya. Treatments comprised a combination of two factors, (1) growing environment (agronet and no agronet) and (2) companion planting with a row of basil surrounding tomato plants, a row of basil in between adjacent rows of tomato, no companion planting. Agronet covers and companion cropping with a row of basil planted between adjacent tomato rows significantly lowered B. tabaci infestation in tomatoes by 68.7%. Better tomato yields were also recorded in treatments where the two treatments were used in combination. Higher yield (13.75 t/ha) was obtained from tomatoes grown under agronet cover with a basil row planted in between adjacent rows of the tomato crop compared to 5.9 t/ha in the control. Non-marketable yield was also lowered to5.9 t/ha compared to 9.8 t/ha in the control following the use of the two treatments in combination. The results of this study demonstrate the potential viability of using companion cropping and agronet covers in integrated management of B. tabaci and improvement of tomato yield.

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Section: Discussionmentioning

confidence: 58%

Synergistic Effects of Agronet Covers and Companion Cropping on Reducing Whitefly Infestation and Improving Yield of Open Field-Grown Tomatoes

et al. 2016

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“…The majority of cereal/legumes intercropping systems are widespread in Africa (Ndakidemi 2006) and India (Ghosh et al 2007), and thoroughly studied in details. Songa et al (2007) found that maize/bean systems had LER values >1.65 while some other intercropping with several cereal species including sorghum, and millet, gave LER values <1.…”

Section: Yield Advantage and Land-use Efficiencymentioning

confidence: 99%

Crop Yield and Nitrogen Bioavailability Mediated by Nitrogen Fertilization in Maize/Soybean Intercropping System with and without Rhizobium Inoculation

2014

Alexandria Science Exchange Journal: An International Quarterly

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Two plots experiments were conducted at the Soil Salinity and Alkalinity Laboratory at Alexandria, Egypt, to study the beneficial effects of nitrogen supply from soybean intercropped with maize on available nitrogen in soil, nitrogen uptake, and yield of maize. The results indicated that the highest grain yield of maize (5581 kg.ha . Although, the intercropped maize and soybean plus rhizobium at 50% of RR of N fertilizer was not yielded the highest corn grain, it is recommended that to be the best economic treatment.

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“…Higher yields have been reported when competition between the two species of intercrop (maize + soybean) was lower than competition with the same species (Vandermeer, 1989). Agyar et al, (2006) and Songa et al (2007) observed intra and inter specific competition in many combinations of several crops (maize, sorghum, millet, cassava and bean). So the maize grain yield produced in the combination maize + bean was higher than in the combination maize+sorghum, while the combination maize +millet showed the lowest grain yield.…”

mentioning

confidence: 97%

Effects of Intra-Interspesific Competitions on Yield and Yield Component of Maize under Different Intercropping Patterns

2012

Egypt. J. Agron.

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WO EXPERIMENTS were conducted during the growing summer seasons [2008][2009] at Shandaweel Agric. Res. St., (Upper Egypt) to study the effect of intercropping maize with sorghum, soybean and cowpea on yield and yield components. There were three intercropping crops: A 1 (maize + sorghum), A 2 (maize+ soybean) and A 3 (maize + cowpea) in three intercropping patterns P 1 , P 2 and P 3 (2:2, 2:4 and 4:4), respectively. The experiments were established as split plots intercropped in randomized complete block design (RCBD) with three replications. The results show significantly higher values of yield and yield components were recorded by the maize + soybean intercrop followed by the maize + cowpea intercrop in both seasons. The yield and yield components of intercropped crops (sorghum, soybean and cowpea) were decreased as compared with solid. The reduction in yield and yield components of this crops due to the shading of maize plants, that results in decrease interception of solar radiation from top of maize crop to top of intercropped crops (soybean and cowpea). The reductions in light intensity of the treatments maize + soybean and maize + cowpea intercrops were 39 and 38% in the combined of the two seasons as compared with solid planting. The highest of yield and yield components were recorded by 2:4 pattern (P 2 ) compared with the other patterns (2:2 and 4:4) due to light interception that was greater in 2:4. The reduction in yield were 51,44 and 52% for maize 61,43 and 59% for sorghum, 60,33 and 60% for soybean and 53.33 and 58% for cowpea in 2:2, 2:4 and 4:4 patterns compared with solid in both seasons, respectively. The total land equivalent ratio (LER) value was (1.22) when intercropped with soybean or cowpea. A similar trend to that of the LER was observed for relative crowding coefficient (Rcc), aggressivity (Agg) and competition ratio (CR). The highest values of monetary advantage index (MAI) (1044.46) were observed when intercropping with soybean at 4:4 pattern, while the lowest value was observed in maize + sorghum intercrop at 2:4 pattern. The data of aggressivity showed that maize was the dominant (Ag positive) and the intercropped crops were dominated (Ag negative).

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

Cited by 53 publications

References 41 publications

Synergistic Effects of Agronet Covers and Companion Cropping on Reducing Whitefly Infestation and Improving Yield of Open Field-Grown Tomatoes

Synergistic Effects of Agronet Covers and Companion Cropping on Reducing Whitefly Infestation and Improving Yield of Open Field-Grown Tomatoes

Crop Yield and Nitrogen Bioavailability Mediated by Nitrogen Fertilization in Maize/Soybean Intercropping System with and without Rhizobium Inoculation

Effects of Intra-Interspesific Competitions on Yield and Yield Component of Maize under Different Intercropping Patterns

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