Effect of intercropping on the parasitoids, Encarsia spp. and Trichogramma spp. in cotton fields, India

Devi, Sushma; Ram, Pala; Rolania, Krishna

doi:10.1186/s41938-020-00275-4

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…and Trichogramma spp. were found to be greater in cotton intercropped with pigeonpea or sesame (Devi et al, 2020). Fernandes et al (2018) reported that cotton-cowpea intercropping increased the parasitism of aphids due to the strong attractiveness of predaceous beetles towards cowpea crop (Coleoptera: Coccinellidae).…”

Section: Intrcropping Effectsmentioning

confidence: 99%

Conservation agriculture based crop management practices impact diversity and population dynamics of the insect-pests and their natural enemies in agroecosystems

Jasrotia

Kumari

Malik

et al. 2023

Front. Sustain. Food Syst.

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Human efforts to grow abundant food through the persistent use of resource-intensive farming practices have resulted in declining soil health, and deterioration of ecosystem functions and services. Conservation agriculture (CA) has emerged as a practice to minimize the impacts of conventional resource-exhaustive and energy-intensive agriculture. Minimum soil disturbance, permanent soil cover, and diversification are the key components of CA. Tillage through conventional practices on the other hand has detrimental effects on the soil and environment as it requires deep inversion of soil with instruments such as mouldboard plow, disc plow etc. leaving very less organic matter in soil after establishment of crop. Even though, CA advocates many benefits over conventional agriculture in terms of soil and water conservation, the consequent changes in moisture and temperature regimes due to reduced tillage and surface cover would likely going to influence the biological activity, including insect pests and their natural enemies which dwell within these agroecosystems. The changed crop conditions under CA may favor particular insect communities and their ecological niches. The adoption of such practices may lead to decrease in insect pests with major activity on the crop canopy. However, the activity of the insect pests that spend their maximum life span at the soil surface or beneath the soil surface may increase. Recent insect-pest outbreaks in North-Western India and imbalances reported in Indo-Gangetic Plains point to the need for a better understanding of the inter-relationships between tillage intensity, residue retention, and insect pest population dynamics. The current review analyzes the existing state of knowledge of these dynamics and presents the scenarios that may emerge as CA get more acceptance. This review will help to develop countermeasures to improve performance and ecosystem services of Conservation agriculture (CA) based cropping systems.

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Section: Intrcropping Effectsmentioning

confidence: 99%

Conservation agriculture based crop management practices impact diversity and population dynamics of the insect-pests and their natural enemies in agroecosystems

Jasrotia

Kumari

Malik

et al. 2023

Front. Sustain. Food Syst.

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“…Recently, the scale Planchonia stentae (Brain, 1920) In addition, species of Cecidomyiidae (Diptera) and mites of the family Phytoseiidae are included as mite predators (unpublished data). The non-exclusivity of the afore mentioned NE species suggests their importance in the regulation of a wide diversity of pests, e.g., T. pretiosum is one of the main species used in inundative BC against lepidopteran pests (Collier and Van Steenwyk 2004;Devi et al 2020).…”

Section: Toward the Complexity Of Agroecosystems: Conservation Of Mul...mentioning

confidence: 99%

Enhancing biological control: conservation of alternative hosts of natural enemies

Cortéz-Madrigal

Gutiérrez-Cárdenas

2023

Egypt J Biol Pest Control

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Background There is a consensus that the conservation of natural enemies is the most important biological control strategy, but it has also been the least attended. The reason is simple: there is a strong contradiction between modern agriculture and biological control. Various strategies have been proposed for the conservation of natural enemies, among others, protection against pesticides and establishment of nectar plants as alternative food. Less attention has been paid to the conservation of alternative hosts for natural enemies. Main body Natural enemies are not exclusive to pests, on the contrary, numerous species require alternative prey and hosts for their prevalence. Their conservation is a strategy widely referenced in scientific literature; however, this idea is not consistent with the studies developed. From 1973 to 2021, only 21 studies that emphasized the use of alternative hosts were recorded. Most focused on single phytophagous–natural enemy species, and little attention was given to the plant–phytophagous relationship. For example, Asclepias curassavica (Apocynaceae) hosts more than nine species of specialist phytophagous; and they, in turn, attracted 24 species of natural enemies. Although different studies demonstrate the potential of alternative hosts, some presume an adverse or doubtful effect on pest control; for example, additional vegetation in agroecosystems could act as a source, but also as a sink for natural enemies. This analysis tries to fit biological control to the modern agricultural paradigm, and not the other way around, as suggested by ecological theory. We support the idea that conservation biological control should be directed toward the conservation of multiple species, with the aim of controlling not only pest, but also the self-regulation of the agroecosystem. The path that should be followed by the study and application of alternative hosts as a strategy of biological control by conservation is discussed. Conclusion The wide diversity of non-pest insect species suggests an enormous potential for their exploitation as alternative hosts. The evaluation of host plants of specialized phytophagous species could improve biological control and reduce the risk of pests for crops. This strategy would partly fill the huge gap that exists in modern agroecosystems in terms of biological diversity.

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“…plantations for many purposes. One of it is to reduce or control the infestation of crop pests such as okra and legumes (Singh et al, 2017), pickerelweed and rice (Xiang et al, 2021) by increasing the population abundance and diversity of parasitoids (Amala and Shivalingaswamy, 2018;Devi et al, 2020), and the second objective is to provide two-in-one crop production (Nchanji et al, 2016;Rocha et al, 2020).…”

Section: P R E S Smentioning

confidence: 99%

METABARCODING IN DIET ASSESSMENT OF ADULT PARASITOID SPECIES, Dolichogenidea metesae (HYMENOPTERA: BRACONIDAE) TOWARDS ITS CONSERVATION AND MANAGEMENT IN THE OIL PALM PLANTATION

SALBI¹

2022

JOPR

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The abundance of parasitoids in the oil palm plantation is greatly influenced by the host and food availability.However, studies on the main diet or food sources of the adult parasitoid wasp, Dolichogenidea metesae of the oil palm pest, Metisa plana is still lacking. This study investigated the diet of adult D. metesae sampled from Good Agricultural Practices (GAP) and non-GAP plantations through metagenomic analysis by using a trnL marker. A total of 761 145 food plant trnL sequences were generated from 12 samples of the parasitoids collected from four plantations. No significant differences (p=0.683) were observed for diversity (Shannon-Wiener index (H') of 0.12-1.22, p=0.68) among the total 62 OTU's of the food plant species when compared between the GAP and Non-GAP plantations. Polygonaceae was the most abundant plant family (59.95%), followed by Asteraceae (10.15%) and Acanthaceae (7.51%). The Antigonon leptopus, Paraprenanthes oligolepis, Asystasiella neesiana and wild banana (Musa itinerans) were among the most dominant plant species consumed by adult D. metesae. We recommend that these dominant food plant species for the D. metesae should be planted widely in the oil palm plantations to enhance the population abundance of D. metesae for successful Integrated Pest Management (IPM) practices.

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Effect of intercropping on the parasitoids, Encarsia spp. and Trichogramma spp. in cotton fields, India

Cited by 5 publications

References 14 publications

Conservation agriculture based crop management practices impact diversity and population dynamics of the insect-pests and their natural enemies in agroecosystems

Conservation agriculture based crop management practices impact diversity and population dynamics of the insect-pests and their natural enemies in agroecosystems

Enhancing biological control: conservation of alternative hosts of natural enemies

METABARCODING IN DIET ASSESSMENT OF ADULT PARASITOID SPECIES, Dolichogenidea metesae (HYMENOPTERA: BRACONIDAE) TOWARDS ITS CONSERVATION AND MANAGEMENT IN THE OIL PALM PLANTATION

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