Management of potato pests and diseases in Africa

Munyaneza, Joseph E.; Bizimungu, Benoît

doi:10.1016/b978-0-12-821237-0.00016-0

Cited by 9 publications

(4 citation statements)

References 103 publications

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“…Globally, potato yield is affected annually by pests, weeds, and insects as well as diseases caused by different viruses, bacteria and fungi [ 14 ]. Viral, bacterial, fungal, and other plant diseases result in an annual loss of USD 1 billion worldwide [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Based Synthesis of Silver/Silver Chloride Nanoparticles from Stachys emodi Efficiently Controls Erwinia carotovora, the Causal Agent of Blackleg and Soft Rot of Potato

et al. 2023

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In recent years, the biological synthesis of silver nanoparticles has captured researchers’ attention due to their unique chemical, physical and biological properties. In this study, we report an efficient, nonhazardous, and eco-friendly method for the production of antibacterial silver/silver chloride nanoparticles utilizing the leaf extract of Stachys emodi. The synthesis of se-Ag/AgClNPs was confirmed using UV-visible spectroscopy, DPPH free radical scavenging activity, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). An intense peak absorbance was observed at 437 nm from the UV-visible analysis. The Stachys emodi extract showed the highest DPPH scavenging activity (89.4%). FTIR analysis detected various bands that indicated the presence of important functional groups. The SEM morphological study revealed spherical-shaped nanoparticles having a size ranging from 20 to 70 nm. The XRD pattern showed the formation of a spherical crystal of NPs. The antibacterial activity performed against Erwinia carotovora showed the maximum inhibition by centrifuged silver nanoparticles alone (se-Ag/AgClNPs) and in combination with leaf extract (se-Ag/AgClNPs + LE) and leaf extract (LE) of 98%, 93%, and 62% respectively. These findings suggested that biosynthesized NPs can be used to control plant pathogens effectively.

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Section: Introductionmentioning

confidence: 99%

A Novel Based Synthesis of Silver/Silver Chloride Nanoparticles from Stachys emodi Efficiently Controls Erwinia carotovora, the Causal Agent of Blackleg and Soft Rot of Potato

et al. 2023

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“…In Africa, potato production is threatened by adverse, pests and diseases is a major potato production limiting factors, severely affecting potato yield and tuber quality (Munyaneza et al, 2022). The results of our surveys have shown that late blight and aphids are diseases and pests causing important economic damages at the production level of the potato in the Loukkos perimeter, which pushes the farmers towards the massive use of pesticides.…”

Section: Discussionmentioning

confidence: 87%

Assessment of phytosanitary practices on the environment: case study potato of Loukkos (northwest Morocco)

Abbou

Chabbi

Benicha³

2023

Environ Monit Assess

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Loukkos perimeter is among the most important irrigated agricultural areas in Morocco. It covers horticulture and market garden production, including potato. This crop is characterized by the intensive use of pesticides that could lead to health and ecological risks, via the food chain and contamination of natural resources, including groundwater. This study aims to assess the use of pesticides in potato cultivation and their impacts on the environment and human health. Here, pesticide use was characterized by the number of treatments (NT), quantity of active substances indicator (QASI) and the treatment frequency indicator (TFI), through eld surveys carried out on 50 Loukkos potato producers. The results showed that farmers use heavy pesticide treatments, mainly against late blight. We determined NT = 19 treatments, total TFI = 28.10 and QASI = 14.86 kg/ha. These values re ect a massive use of pesticides on this crop, which could therefore constitute a challenge and a major constraint for the development of sustainable agriculture in this zone, due to their negative environmental and health effects. It is, therefore, necessary to react quickly to make changes in phytosanitary practices with the aim to monitoring pesticide use via the agro-environmental indicators to reduce health and environmental impact of intensive pesticide use.

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“…[8][9][10] PTM larvae cause damage to potato plants by mining and feeding in the leaves, stems and tubers in fields, 11,12 which also increases the risk of fungal and bacterial pathogen infection. 11,13 More importantly PTM poses a serious threat to potato tubers not just before harvest in the field but also after harvest during storage. PTM infestation in storage may cause tuber loss up to 100%.…”

Section: Introductionmentioning

confidence: 99%

“…Among insect pests, the cosmopolitan potato tuber moth (PTM) Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae) is one of the most important pest insects that attack potato and many Solanaceous crops 8–10 . PTM larvae cause damage to potato plants by mining and feeding in the leaves, stems and tubers in fields, 11,12 which also increases the risk of fungal and bacterial pathogen infection 11,13 . More importantly PTM poses a serious threat to potato tubers not just before harvest in the field but also after harvest during storage.…”

Section: Introductionmentioning

confidence: 99%

Pest management of postharvest potatoes: lethal, sublethal and transgenerational effects of the ectoparasitic mite Pyemotes zhonghuajia on the potato worm Phthorimaea operculella

Liu,

He,

et al. 2023

Pest Management Science

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BACKGROUNDPotato Solanum tuberosum is one of the most important food crops in the world, playing a significant role in global food security. However, many potato industries and farms may suffer losses of tuber yield and quality in storages due to lepidopteran pests. Here, we evaluated the effectiveness of an ectoparasitic idiobiont mite Pyemotes zhonghuajia in biological control of the potato tuber moth (PTM) Phthorimaea operculella by determining the lethal, sublethal (non‐consumptive) and transgenerational effects of P. zhonghuajia of various population densities and exposure durations on PTM survival, development and reproduction.RESULTSPyemotes zhonghuajia females were capable of killing all instar stages of PTM, while resistance to mite parasitism increased with the development of PTM life stage. The mortality of mature larvae (i.e., 4th instar) and pupae increased with the increase of mite density and exposure duration. P. zhonghuajia imposed significant negative sublethal impacts on PTM pupation rate, female fecundity and adult longevity but not on immature development. The sublethal stress was transgenerational, resulting in lower reproduction in the offspring generation.CONCLUSIONP. zhonghuajia induces lethal, sublethal and transgenerational effects and significantly decreases PTM survival and reproductive out, demonstrating its high efficiency in biological control of PTM. Our study provides insight into the mechanisms underlying the non‐consumptive effects of parasitism in an ectoparasite‐host system and delivers critical information for the design and implementation of augmentative releases of P. zhonghuajia in the biological control of PTM in potato storages.This article is protected by copyright. All rights reserved.

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Management of potato pests and diseases in Africa

Cited by 9 publications

References 103 publications

A Novel Based Synthesis of Silver/Silver Chloride Nanoparticles from Stachys emodi Efficiently Controls Erwinia carotovora, the Causal Agent of Blackleg and Soft Rot of Potato

A Novel Based Synthesis of Silver/Silver Chloride Nanoparticles from Stachys emodi Efficiently Controls Erwinia carotovora, the Causal Agent of Blackleg and Soft Rot of Potato

Assessment of phytosanitary practices on the environment: case study potato of Loukkos (northwest Morocco)

Pest management of postharvest potatoes: lethal, sublethal and transgenerational effects of the ectoparasitic mite Pyemotes zhonghuajia on the potato worm Phthorimaea operculella

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