Evaluation of winter wheat as a potential relay crop for enhancing biological control of cotton aphids

Men, Xing; Ge, Feng; Yardim, Erdal Necip; Parajulee, Megha N.

doi:10.1007/s10526-004-5278-z

Cited by 38 publications

(23 citation statements)

References 14 publications

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“…Accordingly, A. gifuensis strongly parasitized the aphids on the tobacco plants in the intercropped fields, and aphid density decreased. These results are similar to the findings of Men et al () and Lai et al (). Men et al () reported that the densities of cotton aphid enemies increased in response to intercropping seedling cotton with winter wheat, and Lai et al () reported that the densities of A. gifuensis increased in tobacco fields in response to intercropping with garlic.…”

Section: Discussionsupporting

confidence: 93%

“…These results are similar to the findings of Men et al () and Lai et al (). Men et al () reported that the densities of cotton aphid enemies increased in response to intercropping seedling cotton with winter wheat, and Lai et al () reported that the densities of A. gifuensis increased in tobacco fields in response to intercropping with garlic. Third, disadvantageous microclimate conditions (concerning, e.g., temperature, humidity, light conditions, or odorants) for the development of aphids and virus diseases may have been caused by intercropping, leading to decreases in green peach aphid densities and/or virus disease incidence.…”

Section: Discussionsupporting

confidence: 93%

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Intercropping oilseed rape as a potential relay crop for enhancing the biological control of green peach aphids and aphid‐transmitted virus diseases

Lai

et al. 2019

Entomologia Exp Applicata

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Tobacco viruses transmitted by green peach aphids, Myzus persicae (Sulzer) (Hemiptera: Aphididae), cause severe disease in flue‐cured tobacco, Nicotiana tabacum L. (Solanaceae), in China and throughout the world. Field experiments were conducted in 2016 and 2017 in Longyan City, Fujian Province, China, to determine whether M. persicae and aphid‐transmitted virus diseases are affected by intercropping of oilseed rape, Brassica napus L. (Brassicaceae), in tobacco fields. The results showed that, compared with those in monocultured fields, the densities of M. persicae and winged aphids in intercropped fields significantly decreased in both 2016 and 2017. In particular, the appearance of winged aphids was delayed by ca. 7 days. Moreover, the densities of Aphidius gifuensis Ashmead (Hymenoptera: Aphidiidae), a parasitoid of the aphid, significantly increased in 2016 and 2017. Accordingly, the incidence rates of aphid‐transmitted virus diseases (those caused by the cucumber mosaic virus, potato virus Y, and tobacco etch virus) significantly decreased in the intercropped fields in 2016 and 2017. Tobacco yields and monetary value significantly increased in 2016 (by 10–25 and 14–29%, respectively) and 2017 (by 17–22 and 22–34%, respectively). Consequently, our results suggest that intercropping oilseed rape in tobacco fields is a good approach to regulating and controlling aphids and tobacco mosaic viruses, for example potyvirus, and this intercropping can help control aphid‐transmitted virus diseases in tobacco.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 93%

Intercropping oilseed rape as a potential relay crop for enhancing the biological control of green peach aphids and aphid‐transmitted virus diseases

Lai

et al. 2019

Entomologia Exp Applicata

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“…At the same time, much effort has been directed toward managing the secondary pest complex in Bt cotton, and increasing the biological control effect of natural enemies is an effective strategy for overall Bt cotton management. Numerous studies suggest that the enhancement of predator abundance and diversity through increasing plant diversity exerts positive effects on pest control in many cropping systems (Andow, 1991;Parajulee et al, 1997;Parajulee & Slosser, 1999;Men et al, 2004;Gardiner et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Intraspecies mixture exerted contrasting effects on nontarget arthropods ofBacillus thuringiensiscotton in northern China

Yang

Parajulee²,

Ouyang

et al. 2013

Agr Forest Entomol

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1 Row-intercropping is a type of multiple cropping with two or more crops grown simultaneously in alternate rows in the same area. It is a traditional agronomic practice and is still prevalent in modern Chinese agricultural ecosystems. Many studies have proposed that intercropping at the crop species level can significantly contribute to pest management when properly managed. However, the performance of intercropping at the plant genotype level is still largely unknown. 2 A multiyear field experiment was conducted to examine the effects of intraspecies Bacillus thuringiensis (Bt)/non-Bt crop mixture on nontarget arthropods. Densities of dominant pests and predators were assessed via direct visual observations. 3 Cotton aphid population levels in monoculture Bt cotton fields were greater than that observed in non-Bt cotton, whereas the row-mixture planting of Bt and non-Bt suppressed the abundance of cotton aphids compared with that in monoculture of either genotype. Investigations also demonstrated that the intraspecies row-mixture increased whitefly abundance compared with monoculture of either genotype. However, the mixture exerted neutral effects on population sizes of mirid bugs and predators. 4 These results suggest that crop cultivation management is insufficient to control secondary pests of Bt cotton, and thus multiple pest suppression strategies are warranted.

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“…In Northern China, intercropped cotton agroecosystems and mono cotton agroecosystems are very common. The effects of intercropping with wheat or of different planting dates on the physiology and yield of cotton have been extensively studied [26,27]. However, the relationship between crop diversity and productivity and key insect pests and natural enemies in different cotton agroecosystems remains unclear.…”

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confidence: 99%

No correlation between the diversity and productivity of assemblages: evidence from the phytophage and predator assemblages in various cotton agroecosystems

Gao

Men

2014

Sci. China Life Sci.

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Biodiversity research has shown that primary productivity increases with plant species number, especially in many experimental grassland systems. Here, we assessed the correlation between productivity and diversity of phytophages and natural enemy assemblages associated with planting date and intercropping in four cotton agroecosystems. Twenty-one pairs of data were used to determine Pearson correlations between species richness, total number of individuals, diversity indices and productivity for each assemblage every five days from 5 June to 15 September 2012. At the same trophic level, the productivity exhibited a significant positive correlation with species richness of the phytophage or predator assemblage. A significant correlation was found between productivity and total number of individuals in most cotton fields. However, no significant correlations were observed between productivity and diversity indices (including indices of energy flow diversity and numerical diversity) in most cotton fields for either the phytophage or the predator assemblages. Species richness of phytophage assemblage and total individual numbers were significantly correlated with primary productivity. Also, species richness of natural enemy assemblage and total number of individuals correlated with phytophage assemblage productivity. A negative but not significant correlation occurred between the indices of numerical diversity and energy flow diversity and lower trophic-level productivity in the cotton-phytophage and phytophage-predator assemblages for most intercropped cotton agroecosystems. Our results clearly showed that there were no correlations between diversity indices and productivity within the same or lower trophic levels within the phytophage and predator assemblages in cotton agroecosystems, and inter-cropped cotton fields had a stronger ability to support the natural enemy assemblage and potentially to reduce phytophages. correlation, productivity, diversity, cotton agroecosystem, insect assemblage

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Evaluation of winter wheat as a potential relay crop for enhancing biological control of cotton aphids

Cited by 38 publications

References 14 publications

Intercropping oilseed rape as a potential relay crop for enhancing the biological control of green peach aphids and aphid‐transmitted virus diseases

Intercropping oilseed rape as a potential relay crop for enhancing the biological control of green peach aphids and aphid‐transmitted virus diseases

Intraspecies mixture exerted contrasting effects on nontarget arthropods ofBacillus thuringiensiscotton in northern China

No correlation between the diversity and productivity of assemblages: evidence from the phytophage and predator assemblages in various cotton agroecosystems

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