Intercropping and Pest Management: A Review of Major Concepts

Smith, Hugh A.; McSorley, Robert

doi:10.1093/ae/46.3.154

Cited by 121 publications

(88 citation statements)

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“…However, reviews of the intercropping literature indicate that, relative to monocultures, herbivores in intercropping systems were less abundant in more than 50% of the studies, more abundant in 15 to 18%, and variable in about 20% [38,41]. About 9% of the studies showed no difference in density between cropping systems [42]. In our study, lower productivity and assimilation of phytophages occurred in the inter-planted cotton fields compared to cotton monocultures.…”

Section: Discussioncontrasting

confidence: 47%

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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Section: Discussioncontrasting

confidence: 47%

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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“…Intercropping practices have some benefits such as improving yield (Esmaeili et al, 2011;Sadeghpour and Jahanzad, 2012) and increasing biological activities in the soil, and decreasing pests (Smith and McSorley, 2000). A number of indices such as LER, crop combination ratio, real yield loss, financial advantage, and intercropping benefits have been proposed to describe competition within and economic advantages of intercropping systems (Carr et al, 2004;Banik et al, 2006;Agegnehu et al, 2006;Dhima et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Productivity, relative yield and plant growth of forage corn intercroppedwith soybean under different crop combination ratio

Baghdadi

Halim

Othman

et al. 2016

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An experiment was carried out to evaluate influence of different crop combination ratios of corn and soybean in terms of forage yield in corn-soybean intercropping. The experiment compared both corn and soybean as monocultures and in different intercropping ratios from 25:75, 50:50 and 75:25 of corn to soybean. The crop combination ratio had significant effects on physiological traits and dry matter yield of forage. The ratio of 75:25 and 50:50 recorded DM yields similar to those of monocropped corn (14.77 t/ha). Relative yield total (RYT) values of intercropping were higher than that of monocrop corn and soybean. Mixtures with 50:50 combination ratio had higher mean total relative yield values (1.15) in comparison with the other ratios. Land equivalent ratio (LER) increased with corn-soybean intercropping and the highest total LER value was recorded with 50:50 ratio (1.13). The crop ratio of 50:50 gave the best combination based on DM yield, relative yield, LER of the combined forage.

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“…Increasing crop species diversity via intercropping is a simple and effective measure that offers advantages at reducing pest densities (Smith & McSorley, 2000). Intercropping or mixing different crops as a traditional agricultural technique is used for preventing pest infestation in different world geographical areas (Ma et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Crop Diversification Affects Biological Pest Control

Marković

2013

AGR

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Crop monocultures encourage the multiplication and spread of pest insects on massive and uniform crop. Numerous studies have evaluated the impact of plant diversification on pests and beneficial arthropods population dynamics in agricultural ecosystems and provided some evidence that habitat manipulation techniques like intercropping can significantly influence pest control. This paper describes various potential options of habitat management and design that enhance ecological role of biodiversity in agroecosystems. The focus of this review is the application and mechanisms of biodiversity in agricultural systems to enhance pest management.

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Intercropping and Pest Management: A Review of Major Concepts

Cited by 121 publications

References 0 publications

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

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

Productivity, relative yield and plant growth of forage corn intercroppedwith soybean under different crop combination ratio

Crop Diversification Affects Biological Pest Control

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