Damage caused by fungi and insects to stored peanut seeds before processing

Santos, Franciele dos; Medina, Priscila Fratin; Lourenção, André Luiz; Parisi, João José Dias; Godoy, Ignácio José de

doi:10.1590/1678-4499.182

Cited by 17 publications

(21 citation statements)

References 9 publications

(14 reference statements)

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“…The application of commercial fungicide improved the germination of the seeds by between 10% and 11% by reducing the number of abnormal seedlings. Similar results were reported by other authors when they evaluated the effects of different fungicide treatments on peanut germination . In the present assay, only storage seeds in C1‐2015 and C2‐2016 reached the lower germination levels established by INASE, after treatment with the commercial fungicide.…”

Section: Discussionsupporting

confidence: 92%

“…This behavior could be due, in part, to the selected methodology. In this sense, some authors reported lower germination percentages of peanut seeds when the assay was done with wet paper roll compared to those obtained with sterile sand . However, the SG levels were even lower in those seeds treated with the BHA formulation.…”

Section: Discussionmentioning

confidence: 94%

“…During storage, high relative humidity promotes metabolic activity reinitiation in the embryo, whereas high temperatures increase respiratory activity, which depletes the reserves. These conditions may also favor fungal and insect activities, reducing seed quality . The fungi that occur in the peanut storage system include members of the genera Penicillium and Aspergillus , which are adapted to substrates with low water activity (0.72 to 0.67 a W ) and can colonize the embryo .…”

Section: Introductionmentioning

confidence: 99%

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Microencapsulated food‐grade antioxidant applied as a preservative of peanut seed quality in microcosm‐ and pilot‐scale trials

et al. 2018

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BACKGROUND: In Argentina, peanuts are stored for 3-6 months. It is important to avoid proliferation of fungi and insect pests during this period. In this study, the potential of butylated hydroxyanisole (BHA) microcapsules to conserve peanut kernels was evaluated in microcosms and on a pilot scale. RESULTS:In microcosm assays, microcapsules containing BHA at a dose of 1802 g g −1 reduced 37% of total fungal count. Higher reductions (77-100%) were obtained with a combined treatment with BHA formulation (1802 g g −1 ) plus fungicide (methyl thiophanate 0.0100 g L −1 and metalaxyl 0.0133 g L −1 ). However, germination levels of peanut seeds treated with the BHA formulation were less than 6% throughout the incubation time. In pilot-scale trials, the storage conditions allowed the control of fungal development and insect proliferation. Quantifiable levels of BHA were also detected throughout the entire storage period. The combined treatment significantly reduced fungal contamination at 2 months of storage (C1-2015: 37.41%; C1-2016: 28.48%; C2-2016: 45.02%). Seed germination of unshelled stored peanuts was not affected by the formulation. CONCLUSION: The application of the BHA formulation during storage combined with pre-seeding treatment could be an appropriate strategy to maintain the quality of the peanut kernels destined for seed.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

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Microencapsulated food‐grade antioxidant applied as a preservative of peanut seed quality in microcosm‐ and pilot‐scale trials

et al. 2018

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“…Knowing that storing shelled and unshelled groundnuts in hermetic triple layer (Purdue Improved Crop Storage-PICS) bags PICS bags reduce insect attacks [14], the promotion of these storage tools is highly recommended. The grain moisture identified by farmers as the main factor favouring the attack of storage insects is corroborated by Santos et al [15].…”

Section: Discussionmentioning

confidence: 65%

“…Indeed, seed are very susceptible to insect attacks because of their fragile seed coat and brittle cotyledons [15]. The losses due to these pests can reach more than 50% of the harvests after 4 months of peanut storage [16].…”

Section: Introductionmentioning

confidence: 99%

Farmers’ management of peanut (Arachis hypogaea L.) diversity, their varietal preference traits and uses in Southern and Central Benin

Loko

Montcho

Zandjanakou-Tachin

et al. 2020

J. Crop Sci. Biotechnol.

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Background Peanut (Arachis hypogaea L.) is one of the major oilseed legumes contributing to food security and poverty reduction in Benin. Unfortunately, several constraints hamper peanut production in Benin leading to a low yield. Knowing that seed is crucial for increase agricultural productivity, a good knowledge of on-farm management of grown peanut diversity and uses that allow its maintenance in traditional Beninese agriculture are prerequisites to establish an efficient breeding and conservation programs. Therefore, this study aim to document peanut varietal diversity, folk nomenclature, seed system, storage constraints, seeds pest management practices, varietal preference criteria, cultural taboos and uses in southern and central Benin. Methods Two hundred and sixteen (216) farmers were surveyed through 32 villages in southern and central Benin using research tools and techniques of rural appraisal such as field visits, group surveys and individual surveys using a questionnaire. Results Fifty-four peanut folk varieties grouped into 8 morphotypes based on the seed characteristics were registered in the study area. All local names given to peanut folk varieties by ethnic groups have meaning. The number of folk varieties maintained per village ranged from 1 to 11 (an average of 4) and varied between 1 and 4 per household. Some peanut producers reported the disappearance of some folk varieties. The drop in yield was the main reason of peanut varietal disappearance in the study area. Rodent attacks were the most important constraints of peanut production in the study area. Varietal preference criteria varied from ethnic groups with seed size and many pod/seeds per plant as the main preferred traits. Peanut seed system was mainly informal. For peanut seed conservation, farmers use various storage tools. To alleviate pest problems in stored peanut, producers used plant biocides and synthetic chemicals. Some cultural taboos and various uses (food, feed and medicinal) of peanuts have been recorded in the southern and central Benin. Conclusions Our results suggest that for boost peanut production in central and southern Benin, breeders must create high yielding peanut varieties. For the adoption of these new varieties, it is important to take in account the preference varietal criteria of each ethnic group. To a good estimation of peanut diversity in the study area, morphological and molecular characterizations were 3 recommended.

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