Onion (Allium cepa) and garlic (Allium sativum) as pest control intercrops in cabbage based intercrop systems in Zimbabwe

Debra, Katsaruware Rumbidzai; Misheck, D. K.

doi:10.9790/2380-07221317

Cited by 23 publications

(13 citation statements)

References 4 publications

(9 reference statements)

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“…According Mann et al [10], onion odor emits sulfur containing organic compounds called thiols and these substances can participate in various protective mechanisms described above. Additionally Debra and Misheck [11], obtained similar results to this study, intercropping cabbage crop with onion and garlic, observed that the death of cabbage plants and the incidence of insects significantly reduced while the yield of cabbage was higher. In another study, intercropping was made between wheat and garlic to control the grain aphid Sitobion avenae Fabricius (Homoptera: Aphididae), on the basis of experiments it was observed a reduction in the aphid population and that yields of grain wheat significantly increased [12].…”

Section: Discussionsupporting

confidence: 70%

Intercropping of lettuce and onion controls caterpillar thread, Agrotis ípsilon major insect pest of lettuce

Sulvai

Chaúque

Macuvele

2016

Chem. Biol. Technol. Agric.

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Background:The thread caterpillar Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae), is an insect pest that attacks the lettuce, Lactuca sativa and this is a serious problem faced by farmers in Niassa province due to the fact that at the end of the fourth larval stage it (insect) cuts saplings and compromising agricultural output. Usually the control of this pest has been done using synthetic insecticides, but these have environmental related implications. Thus the researches of eco-friendly forms of control have been studied. Methods:In this research, the lettuce intercropping with onion Allium cepa was carried out to control the insect pest A. ípsilon. The experiment took place at the Agricultural Research Institute of Mozambique-IIAM. Several trials, one in monoculture (only lettuce) and other intercropped with onion were performed. In the experiment different intercropping patterns were tested, namely: Surround (a continuous line of onion surrounding a lettuce line), alternating (a line of onion and another of lettuce) and two lines of lettuce and one of lettuce.Results: Based on tests conducted, the intercropping of lettuce with onion resulted in more plant not attacked after the test compared to the monocrop (only lettuce). In the same research we studied the best pattern to intercropping and it was found that the surrounding form (a continuous line of onion encircling a lettuce line), after the experiment, showed a higher average number of non-attacked lettuce plants. Conclusions:Surrounding was the best intercropping pattern because showed a higher average number of nonattacked lettuce plants. The current results indicate that the onion can be used as useful tool to control the caterpillar, A. ipsolon in lettuce.

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Section: Discussionsupporting

confidence: 70%

Intercropping of lettuce and onion controls caterpillar thread, Agrotis ípsilon major insect pest of lettuce

Sulvai

Chaúque

Macuvele

2016

Chem. Biol. Technol. Agric.

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“…Literature reports that intercropping of cabbage with appropriate vegetables (referred to in the literature as companion crops) has potential for controlling pests in vegetables and thus minimising pesticide use. For instance, intercropping cabbage with alliums and tomato were found to significantly minimise pests in the field (Baidoo, 2012;Debra & Misheck, 2014;Luchen, 2001).…”

Section: Vegetable Cropping Systemmentioning

confidence: 99%

The Risk of Dietary Exposure to Pesticide Residues and Its Association with Pesticide Application Practices among Vegetable Farmers in Arusha, Tanzania

Kiwango¹,

Kassim²,

Kimanya³

2018

JFR

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This study was conducted to assess dietary exposure to pesticide residues and pesticide application practices leading to the presence of these residues among vegetable farmers in Arusha, Tanzania. Face-to-face interviews using semi-structured questionnaires (including 24-hour recall and food frequency questionnaire techniques) were conducted to collect information on pesticide application practices and vegetable consumption, from 76 farmers. A sample of ready-to-eat vegetables was collected from each farmer's household to determine the level of pesticide residues. Pesticide residues were analyzed by gas chromatography-mass spectroscopyA deterministic approach was used to assess dietary exposure to pesticide residues. Among the analyzed samples, 31.4% contained detectable levels of organophosphate residues. The detected organophosphates were dimethoate (mean, 8.56 mg kg-1), acephate (mean, 2.9 mg kg-1), profenofos (mean, 8.44 mg kg-1), dichlorvos (mean, 20.8 mg kg-1) and malathion (mean, 5.47 mg kg-1). The mean exposure for dimethoate (0.0021 mg kg-1 body weight (wt) day‑1 was higher than its corresponding acceptable daily intakes of 0.002 mg kg-1bwd‑1 resulting in hazard quotient of 1.044 with a consequent hazard index of 1.19 for organophosphates. Pyrethroid pesticides (permethrin, cypermethrin, and lambda-cyhalothrin) were also detected but at a lower frequency (17.1%) and hazard index (0.029). The exposure to pesticide residues was significantly associated with limited access to expert advice on pesticide application (p=0.031, adjusted odds ratio=6.56) and over-dosage (p=0.038, adjusted odds ratio=3.751).The risk may be minimized by increasing access to support by extension service providing guidance on good practices and ensuring application of appropriate doses for pesticides.

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“…In this way, intercropping systems can protect crop from pest infestation. Debra and Misheck [43] reported that intercropping cabbage crop with onion and garlic reduced the incidence of insect pest significantly. Particularly intercropping with wheat and garlic reduced aphid population from wheat field [44] and onion is usually used as control of aphid in intercropping system [45].…”

Section: Discussionmentioning

confidence: 99%

Intercropping Empower Reduces Insect Pests and Increases Biodiversity in Agro-Ecosystem

Afrin¹,

Latif²,

Banu³

et al. 2017

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Currently insect pest management solely depends on chemical pesticide that continuously affects on environment, biodiversity, animal as well as human health. Outbreak of secondary insect pest is also the cost of pesticide use in field leading crop more vulnerable to more pests. These negative impacts of pesticides have provoked growing interest in the adoption of multi-function agricultural biodiversity that promote pest management, creating interesting challenge for traditional approaches to regulatory compliance. To address multi-function agricultural practice, we tested several intercropping systems with mustard and their effect on pest management. Our results revealed that intercropping systems mustard with onion, garlic, radhuni and coriander significantly reduced pest population over sole crop. However, intercropping mustard with wheat and gram increased pest population in mustard field. This result indicated that all crops are not suitable for intercropping system. Among the tested intercropping systems, mustard with onion and coriander significantly reduced branch and flower infestation and increased pod formation per plant. These four intercropping systems did not significantly affect on honeybee pollinator which are crucial for mustard crop yield. A significant linear relationship was also found between honeybee population and pod formation. Our results indicate that suitable intercropping system can be a potential multi-functional agricultural practice for pest management in mustard crop.

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Onion (Allium cepa) and garlic (Allium sativum) as pest control intercrops in cabbage based intercrop systems in Zimbabwe

Cited by 23 publications

References 4 publications

Intercropping of lettuce and onion controls caterpillar thread, Agrotis ípsilon major insect pest of lettuce

Intercropping of lettuce and onion controls caterpillar thread, Agrotis ípsilon major insect pest of lettuce

The Risk of Dietary Exposure to Pesticide Residues and Its Association with Pesticide Application Practices among Vegetable Farmers in Arusha, Tanzania

Intercropping Empower Reduces Insect Pests and Increases Biodiversity in Agro-Ecosystem

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