The Effects of Climate Change on Agricultural Sustainability in Southeast Nigeria – Implications for Food Security

Nwaiwu, I. U. O

doi:10.9734/ajaees/2014/6310

Cited by 15 publications

(11 citation statements)

References 5 publications

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“…This shows that females constitute a significant proportion of the population that are affected by CVC. Despite the observed erratic nature of both rainfall and dry spells, the location of the zone within the tropical rainforest belt of the country encourages strive to produce most tropical food crops like yam, cassava, vegetables, rice, and livestock production (Nwaiwu et al., 2014). Farmers in SE, who produce mainly food crops like cassava, yam and maize, mostly practice mixed farming (Ifeanyi-obi and Mathews-Njoku, 2014).…”

Section: Introductionmentioning

confidence: 99%

Impacts of variability and change in rainfall on gender of farmers in Anambra, Southeast Nigeria

Nnadi

Liwenga

Lyimo

et al. 2019

Heliyon

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Men and women farmers experience different impacts of climate variability and change (CVC). Research on the differentiated impacts of variability and change in rainfall on gender is limited in the study area. This study examined perceptions and experience of men and women farmers on the impacts of CVC, using climate data and farmers' perception from a gender perspective. It examined the effect of CVC on annual and seasonal rainfall, number of rain days, onset and cessation of rainfall; perceived impacts of CVC on annual and seasonal rainfall and compared the measured (meteorological) impacts with the perceived impacts across gender. Mixed methods of qualitative and quantitative data collection and participatory rural approaches were used. Household survey of 50% men and 50% women each were conducted in six farming communities. Data analysis involved the use of annual rainfall trends, Annual Rainfall Anomaly (ARA), Standardized Annual Rainfall Anomaly (SARA), regression analysis percentages and chi-square. Results reveal the occurrences of more dry years than wet years (ARA and SARA <0.00) in the three locations. There were wide variability and changes in inter-annual rainfall in Ogbaru (R 2 = 0.0003), Anambra East (R 2 = 0.0071) and Ayamelum (R 2 = 0.0014). Seasonal rainfall was unevenly distributed from 2007-2016. There were wide variations in dates of onset and cessation of rainy season (R 2 = 0.006) and number of rain days (R 2 = 0.009). Men and women responses revealed that there were statistically significant (p < 0.005) changes in the onset of rainy season, early cessation of annual rainfall; alteration of growing seasons; frequent flooding and frequent drought. Women felt more impact of food insecurity, water shortage and had more burden of migration due to changes in rainfall. This study concludes that respondents perceived and experienced impacts of CVC which varied across gender. Hence, it recommends the provision of sustainable water and irrigation system which should encourage women's participation in the construction, maintenance and management among others.

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Section: Introductionmentioning

confidence: 99%

Impacts of variability and change in rainfall on gender of farmers in Anambra, Southeast Nigeria

Nnadi

Liwenga

Lyimo

et al. 2019

Heliyon

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Section: Impactos Das Alterações Climáticas No Polo Gesseiro Do Araripeunclassified

“…A mandioca, por sua vez, é uma espécie adaptada a regiões de clima tropical, podendo ser cultivada em locais com faixa de temperatura entre 18 °C e 35 °C (JARVIS et al, 2012;NWAIWU et al, 2014). Entretanto, a faixa entre 25 °C e 27 °C é considerada ótima para a atividade vegetativa das plantas (JARVIS et al, 2012;NWAIWU et al, 2014). Para esse cultivo, o deficit hídrico prolongado leva a planta de mandioca a um período de dormência ou de repouso (ALVES, 2006), e temperaturas superiores a 37 °C paralisam a brotação das gemas na maniva (GABRIEL et al, 2014), resultando na redução da produção.…”

Section: Impactos Das Alterações Climáticas No Polo Gesseiro Do Araripeunclassified

Agricultura sustentável como medida de adaptação para o Polo Gesseiro do Araripe

Angelotti¹,

Oliveira²,

Giongo³

et al. 2021

A Ação Pública De Adaptação Da Agricultura À Mudança Climática No Nordeste Semiárido Brasileiro

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“…No studies in the literature have reported the effect of temperature rise on the morphological traits and yield responses of native Manihot species in the Brazilian semiarid region. However, some studies have shown that cassava can develop at a wide temperature range (18 to 35 °C), with optimal performance in the range from 25 to 27 °C (Jarvis et al, 2012;Nwaiwu et al, 2014). Thus, experiments under controlled conditions can contribute to elucidate this knowledge gap and provide information for breeding programs aimed at selecting native forage genotypes under high-temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Rise in temperature increases growth and yield of Manihot sp. plants

Oliveira

Santos

et al. 2022

RSD

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The selection of native forage species with yield potential under climate change scenarios can strengthen resilience of the Brazilian semiarid region. This study aimed to evaluate the effect of increasing temperature on growth and morphological and yield responses of plants of the genus Manihot. The experimental design was completely randomized in a 2×9 factorial arrangement (two temperature regimes and nine genotypes). The increase in temperature promoted higher plant dry mass (PDM) for genotypes A:24, A:79, A:102, A:EL, and A:GO during establishment. The percentage of leaves was reduced with the highest temperatures in the establishment, except for genotypes A:20, A:21, and A:GO. The increase in temperature during regrowth increased leaf dry mass (LDM) and reduced the leaf to stem ratio, except for A:24, A:79, and A:102, which presented similar values at both temperatures. Species of the genus Manihot respond differently to the 4.8 °C increase in air temperature. The increase in temperature shows a positive impact on the biomass production of species of this genus.

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The Effects of Climate Change on Agricultural Sustainability in Southeast Nigeria – Implications for Food Security

Cited by 15 publications

References 5 publications

Impacts of variability and change in rainfall on gender of farmers in Anambra, Southeast Nigeria

Impacts of variability and change in rainfall on gender of farmers in Anambra, Southeast Nigeria

Agricultura sustentável como medida de adaptação para o Polo Gesseiro do Araripe

Rise in temperature increases growth and yield of Manihot sp. plants

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