Maize production systems, farmers’ perception and current status of maize lethal necrosis in selected counties in Kenya

Njeru, Faith; Mwaura, Samuel; Kusolwa, Paul; Misinzo, Gerald

doi:10.1080/26895293.2022.2085815

Cited by 4 publications

(4 citation statements)

References 19 publications

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“…The total maize yield in Kenya ranged from 1.43 to 1.82 t/ha from 2010 to 2018 ( FAO, 2018 ) ( Table 1 ). Similar results have also been reported from data collected from farmers in Kenya who reported average maize yields of 1.48 t/ha for the 2020/2021 cropping season ( Njeru et al, 2022 ).…”

Section: Introductionsupporting

confidence: 87%

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Major biotic stresses affecting maize production in Kenya and their implications for food security

Njeru,

Wambua,

Muge

et al. 2023

PeerJ

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Maize (Zea mays L.) is a staple food for many households in sub-Saharan Africa (SSA) and also contributes to the gross domestic product (GDP). However, the maize yields reported in most SSA countries are very low and this is mainly attributed to biotic and abiotic stresses. These stresses have been exacerbated by climate change which has led to long periods of drought or heavy flooding and the emergence of new biotic stresses. Few reports exist which compile the biotic stresses affecting maize production in SSA. Here, five major biotic stresses of maize in Kenya are presented which are attributed to high yield losses. They include Maize lethal necrosis, fall armyworm, gray leaf spot, turcicum leaf blight and desert locusts. Maize lethal necrosis and fall armyworm are new biotic stresses to the Kenyan maize farmer while gray leaf spot, and turcicum leaf blight are endemic to the region. The invasion by the desert locusts is speculated to be caused by climate change. The biotic stresses cause a reduction in maize yield of 30–100% threatening food security. Therefore, this review focuses on the cause, control measures employed to control these diseases and future prospective. There should be deliberate efforts from the government and researchers to control biotic stresses affecting maize yields as the effect of these stresses is being exacerbated by the changing climate.

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Section: Introductionsupporting

confidence: 87%

“…Central and Eastern Kenya, had up to a third of the farmers affected and with 19% maize yield loss ( Beyene et al, 2017 ). Many studies have estimated the losses due to MLN in different maize agro-ecological zones in Kenya to be between 23–100% ( Njeru et al, 2022 ).…”

Section: Survey Methodologymentioning

confidence: 99%

Major biotic stresses affecting maize production in Kenya and their implications for food security

Njeru,

Wambua,

Muge

et al. 2023

PeerJ

Self Cite

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“…The total land area in Kenya under maize is estimated as 1.5 million hectares (KALRO, 2022). However, average countrywide yield stands at 1.8 tons/hectare which is notably below the potential of 6 tons per hectare (Njeru et al, 2022). These production amounts are highly insufficient to meet the current per capita consumption demands of 100kg (Gacheriet al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Efficacy Assessment of Inhibitory Fungal Concoctions Against Mycotoxin Fungi Affecting Maize Grain Quality in Western Kenya

2023

JBAH

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Limited biological control products exist for use against mycotoxins in maize fields of Kenya's smallholders. In response, this study aimed to assess the capacity of four fungal isolates to suppress the proliferation of mycotoxin fungi and disruption of fungal diversity in field conditions. Field assessments were done in Kibos and Sega sites of Western Kenya during the long and short rain seasons of 2020 while post-harvest assessments were done at

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“…However, nationally generated crop-yield forecasts and accurate data on cropped land disaggregation are lacking [10]. Increasing maize production in South Sudan remains a challenge without using fertilizer in comparison to the yields in the neighboring countries such as Kenya (3.9 t ha -1 ), Tanzania (1.54 t ha -1 ), Ethiopia (3.9 t ha -1 ) and Uganda (2.5 t ha -1 ) [11,12,13,14]. Although the other countries' yields are higher than South Sudan, these are still below cereal yield potential, for on station trials and from commercial farms, of about 8 t ha -1 for the Sub-Sahara Africa (SSA) region [15] and maize potential yields for the eastern and southern African counties [12].…”

Section: Introductionmentioning

confidence: 99%

Increased Maize Yield in Response to Applied Phosphorus and Nitrogen in the Greenbelt Zone, in South Sudan

Bazugba,

Massawe,

Shitindi

et al. 2023

JEAI

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Aims: The study focused on assessing the impact of applying phosphorus and nitrogen fertilizers on maize yield in the Greenbelt zone of South Sudan, where nutrient deficiencies often limit crop growth. Study Design: Field experiments involved a 4 x 4 x 4 factorial experiments in a randomized complete block design. The field experiment was conducted in Sakure and Nginda Payams in Nzara and Yambio Counties respectively, between August 2020 and January 2022. Methodology: The treatments involved Triple Super Phosphate (TSP, 0-46-0) applied at 20, 40 and 60 kg P ha -1 without N, Urea (46% N) applied at 40, 80 and 120 kg N ha-1 without P, combinations of each level of P with varying levels of N and an absolute control (P0N0). Maize variety was an open pollinated called NARD 1. Plot size was 16 m2, all maize plant above ground was harvested in a net plot (8.5 m2) after 120 days. Results: The average maize yield in response to applied fertilizer P and N in the three sites was 4.7 t ha-1 an increase of about 62 % over the control (2.9 t ha-1), and was statistically significantly at P = .05 Conclusion: 20 kg P ha-1 and 120 kg N ha-1 rates were profitable and therefore were recommended as optimum application rates that can contribute to food security and economic progress in the area. However, more research is recommended to establish long-term fertilizer effects on maize performance, optimal application rates, and environmental considerations. The study stressed the need for diversified fertilizer research across seasons and emphasized community awareness about fertilizer benefits for sustainable maize production and farming system research.

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Maize production systems, farmers’ perception and current status of maize lethal necrosis in selected counties in Kenya

Cited by 4 publications

References 19 publications

Major biotic stresses affecting maize production in Kenya and their implications for food security

Major biotic stresses affecting maize production in Kenya and their implications for food security

Efficacy Assessment of Inhibitory Fungal Concoctions Against Mycotoxin Fungi Affecting Maize Grain Quality in Western Kenya

Increased Maize Yield in Response to Applied Phosphorus and Nitrogen in the Greenbelt Zone, in South Sudan

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