Trap crop diversity enhances crop yield

Parker, Joyce E.; Crowder, David W.; Eigenbrode, Sanford D.; Snyder, William E.

doi:10.1016/j.agee.2016.08.011

Cited by 25 publications

(18 citation statements)

References 56 publications

(69 reference statements)

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“…densities did not decrease with trap cropping, but crop yields increased, probably as a result of changes in the behavior of Phyllotreta spp. (Parker et al 2016). As the relativeattraction of plants to Phyllotreta spp.…”

Section: Diamondback Moth and Other Lepidopteran Pestsmentioning

confidence: 99%

Trap Crops and Insectary Plants in the Order Brassicales

Badenes‐Pérez

2018

Annals of the Entomological Society of America

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This paper reviews the most important cases of trap crops and insectary plants in the order Brassicales. Most trap crops in the order Brassicales target insects that are specialist in plants belonging to this order, such as the diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), the pollen beetle, Meligethes aeneus Fabricius (Coleoptera: Nitidulidae), and flea beetles in the genera Phyllotreta and Psylliodes (Coleoptera: Chrysomelidae). In most cases, the mode of action of these trap crops is the preferential attraction of the insect pest for the trap crop located next to the main crop. With one exception, these trap crops in the order Brassicales have been used with brassicaceous crops. Insectary plants in the order Brassicales attract a wide variety of natural enemies, but most studies focus on their effect on aphidofagous hoverflies and parasitoids. The parasitoids benefiting from insectary plants in the order Brassicales target insects pests ranging from specialists, such as P. xylostella, to highly polyfagous, such as the stink bugs Euschistus conspersus Uhler and Thyanta pallidovirens Stål (Hemiptera: Pentatomidae). In the order Brassicales, the three most common trap crops are Indian mustard, Brassica juncea (L.) Czern, Chinese cabbage, Brassica rapa L., and yellow rocket, Barbarea vulgaris R. Br., while the three most common insectary plants are sweet alyssum, Lobularia maritima (L.) Desv., white mustard, Sinapis alba L, and B. vulgaris. Except for Tropaeolum majus L. (Tropaeolaceae) and Capparis decidua (Forssk.) Edgew. (Capparaceae), the tested trap crops and insectary plants in the order Brassicales belong to the family Brassicaceae.

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Section: Diamondback Moth and Other Lepidopteran Pestsmentioning

confidence: 99%

Trap Crops and Insectary Plants in the Order Brassicales

Badenes‐Pérez

2018

Annals of the Entomological Society of America

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“…Agricultural intensification, crop diversification, irrigation, improved crop varieties and other agronomic management strategies are needed to stabilize or enhance food production now and under projected climatic conditions. Of these options, crop diversification requires special attention because it can stabilize national and local food production [3-6], improve dietary choices [7-10], increase on-farm ecosystem services [11-14], avert micro-nutrient deficiencies and improve household health outcomes [7, 15] and increase incomes of smallholder farmers [16-18].…”

Section: Introductionmentioning

confidence: 99%

Impacts of climate change on agro-climatic suitability of major food crops and crop diversification potential in Ghana

Chemura

Schauberger

Gornott

2020

Preprint

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11Crop diversification is a promising climate change adaptation strategy for food production stability. 12However, without quantitative assessments of where, with which crop mixes and to what extent 13 diversification is possible now and under future climatic conditions, efforts to expand crop diversification 14 under Nationally Determined Contributions (NDCs) and National Action Plans (NAP) are unsystematic. 15In this study, we used extreme gradient boosting, a machine learning approach to model the current 16 climatic suitability for maize, sorghum, cassava and groundnut in Ghana using yield data and 17 agronomically important variables. We then used multi-model future climate projections for the 2050s and 18 two greenhouse gas emissions scenarios (RCP 2.6 and RCP 8.5) to predict changes in the suitability range 30 31 32 2 35 Agricultural intensification, crop diversification, irrigation, improved crop varieties and other agronomic 36 management strategies are needed to stabilize or enhance food production now and under projected 37 climatic conditions. Of these options, crop diversification requires special attention because it can stabilize 38 national and local food production [3-6], improve dietary choices [7-10], increase on-farm ecosystem 39 services [11-14], avert micro-nutrient deficiencies and improve household health outcomes [7, 15] and 40 increase incomes of smallholder farmers [16-18]. 41 42 Studies have shown that crop diversity contributes to resilience through a type of "insurance" where a 43 failure in one crop is mitigated by another crop/cultivar and also through more efficient resource 44 partitioning at various scales [5, 19, 20]. As such, crop diversification has been shown to be beneficial to 45 building climate resilience in many countries such as in China [21], Canada [22], Kenya [23], Ethiopia 46 [24], Malawi [9, 18], Zimbabwe [25] and also Ghana, [26, 27]. Crop diversification is achieved through 47 multiple cropping where farmers grow two or more crops in sequence (relay cropping) or together 48 (intercropping and mixed cropping) within the same year. The ability of farmers to diversify is based on 49 the concurrent (for intercropping) or sequential (for relay cropping) biophysical suitability of the crops in 50 their area. 51 52 Crop suitability is a measure of the climatic and other biophysical characteristics of an area to sustain a 53 crop production cycle to meet current or expected targets [28, 29]. When combined with climate 54 projections, suitability assessments are used to gauge shifts in crop potential under climate change [30, 55 31]. Despite massive developments in agricultural production technology, weather and climate still play a 56 significant role in influencing agricultural production in Africa and elsewhere [32-34]. In particular, under 57 rain-fed conditions the production potential of a crop depends on the climatic conditions of an area. 58 Therefore, each crop will thrive within a specific climatic envelope that can be enhanced by management 59 -yet climate cha...

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“…Modern agriculture practices such as monoculture production, intensive land use, tillage, and chemically-based pest control have contributed to the loss of biodiversity in many agricultural production areas, negatively affecting functional biodiversity and ecosystem services such as pollination and biological pest control [1,2,3,4]. In agricultural monocultures, non-crop vegetation is usually excluded from both cropped areas and adjacent fields, leading to simple landscapes that are dominated by few or single plant species [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Global interest in ecological intensification [10,11], and, more specifically, on sustainable pest management, has reinforced the importance of biodiversity conservation in agro-ecosystems [12]. From a pest management perspective, boosting populations of naturally occurring enemies of arthropod pests via habitat diversification has been advocated as a more sustainable alternative to chemically-based pest control [2,13,14,15,16]. Several studies have demonstrated that the establishment of non-crop habitats around field margins can provide ecosystem services, including enhanced biological pest control [17,18,19,20].…”

Section: Introductionmentioning

confidence: 99%

“…Trap cropping is one habitat diversification tactic that can be used to attract, divert, intercept, or retain targeted pests in non-crop habitats to protect economically valuable crop plants [2,21,22,23]. To be effective, trap-cropping systems must congregate and retain the pest on trap crop plants, thereby reducing the pest populations in the cash crop [23,24,25].…”

Section: Introductionmentioning

confidence: 99%

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The ‘Botanical Triad’: The Presence of Insectary Plants Enhances Natural Enemy Abundance on Trap Crop Plants in an Organic Cabbage Agro-Ecosystem

Shrestha

Finke

Piñero

2019

Insects

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Habitat manipulation through the incorporation of non-crop plants such as trap crops (to lure pests away from the cash crop) and insectary plants (to provide resources for natural enemies) into agro-ecosystems is an ecological approach to pest management. In a field-scale study, we quantified the effects of integrating the use of trap crops with insectary plants as a novel method to control pest herbivores in an organic cabbage agro-ecosystem. We hypothesized that pests would be concentrated in the trap crop habitat and suppressed by insectary-subsidized natural enemies in situ. We documented arthropod abundance (both adults and immature stages) associated with (1) two insectary plant species (sweet alyssum, Lobularia maritima, and buckwheat, Fagopyrum esculentum) either alone or in combination; (2) a trap crop mixture of mighty mustard (Brassica juncea), red Russian kale (Brassica oleracea var. acephala), and glossy collards (Brassica oleracea var. italica), and (3) cabbage cash crop (Brassica oleracea var. capitata). Trap crops were more attractive to pests than the cash crop. On a per-plant basis, densities of the herbivores Evergestis rimosalis, Trichoplusia ni, and Plutella xylostella were 154, 37, and 161× greater on the kale trap crop than on the cabbage cash crop, and 54, 18, and 89× greater on the collards trap crop than on the cash crop. Insectary plants contributed to the consumption of pests that aggregated on the trap crop. Parasitism of E. rimosalis by the braconid wasp Cotesia orobenae was significantly increased, and the abundance of eggs and larvae of the predatory coccinellid beetle Coleomegilla maculata was greater on the trap crop in the presence of insectary plants compared to trap crops that lacked insectary plants. The ‘Botanical Triad’ of cash crop, trap crop, and insectary plants represents a new type of agro-ecosystem manipulation that integrates ecosystem service providers (e.g., predators and parasitoids) within the cropping system.

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Trap crop diversity enhances crop yield

Cited by 25 publications

References 56 publications

Trap Crops and Insectary Plants in the Order Brassicales

Trap Crops and Insectary Plants in the Order Brassicales

Impacts of climate change on agro-climatic suitability of major food crops and crop diversification potential in Ghana

The ‘Botanical Triad’: The Presence of Insectary Plants Enhances Natural Enemy Abundance on Trap Crop Plants in an Organic Cabbage Agro-Ecosystem

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