Enhancing yield and profitability of cassava in the savannah and forest zones of Democratic Republic of Congo through intercropping with groundnut

Ndonda, Adrien; Mahungu, N.M.; Frangoie, Antoine; Moango, A.

doi:10.4314/jab.v89i1.6

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…NAROCAS1 had the highest positive response to profit (1% level of significance) and similarly planting NASE19 and NASE14 significantly improves profit implying that planting the varieties results in an increment in profit. Results from this study are in agreement with studies by Ndonda et al (2015) who observed that the choice of cassava variety determines profitability of a cropping system. Ndonda et al (2015) further found low efficiency associated with local cassava variety and concluded that improved varieties that are more productive and increase the net income and thus provide an economic benefit.…”

Section: Profit Functionsupporting

confidence: 92%

“…Results from this study are in agreement with studies by Ndonda et al (2015) who observed that the choice of cassava variety determines profitability of a cropping system. Ndonda et al (2015) further found low efficiency associated with local cassava variety and concluded that improved varieties that are more productive and increase the net income and thus provide an economic benefit. Again this confirms (Itam et al, 2018) that improved cassava varieties are more profitable.…”

Section: Profit Functionsupporting

confidence: 92%

“…Likewise a study by Omotayo & Oladejo (2016) revealed that cassava is profitable according to the gross margin analysis but its net return was being affected negatively by cost of labuor and cassava planting material. Meanwhile (Ndonda et al, 2015) found that local varieties of cassava performed poorly and less profitable under intercropping system in DRC. These results were confirmed by the finding in this study that improved varieties are more profitable than non-improved varieties.…”

Section: Change In Profitmentioning

confidence: 99%

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Effects of Improved Cassava Varieties on Farmers’ Income in Northern Agro-ecological Zone, Uganda

Akongo¹,

Otim²,

Turyagyenda³

et al. 2021

SAR

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This paper examines the extent to which improved cassava varieties contribute to improvement in income of smallholder farmers in the Northern agro-ecological zone of Uganda. In order to achieve the objective, data was collected from PRELNOR supported farmers’ fields, other farmers’ fields and baseline cassava fields. Consequently, descriptive statistics, gross margin and stochastic frontier analysis were adopted during analysis. Results from the analysis revealed that higher yields per hectare were registered within PRELNOR supported farmers’ fields and yield from NAROCAS1 surpassed all the varieties (37.3 tons per hectare). Location specific results revealed that Gulu had better yields (34.5 tons per hectare) while Kitgum registered the lowest average (24.1 tons per hectare). Gross margin indicated that every Shilling invested in improved variety earned profit 1.3 to 1.8 times above the local variety and each shillings invested in PRELNOR supported fields generated 5.6 times above the baseline fields. The parameter estimate for profit function revealed that planting material, other production related costs, NAROCAS1, NASE14 and NASE19 were positively correlated with profit but labour and baseline field had negative correlations. Conversely, profit efficiency grew by 40% under improved varieties against local varieties. This study suggests that the difference in yields and profit between locations was caused by biophysical characteristic; disease tolerant varieties can tremendously improve profitability and income; meanwhile the profit gaps were partly attributed to inefficiency. This study recommends fast tracking adoption of pest and disease tolerant varieties and integrated research and development approach throughout the cassava value chain.

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Section: Profit Functionsupporting

confidence: 92%

Section: Profit Functionsupporting

confidence: 92%

Section: Change In Profitmentioning

confidence: 99%

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Effects of Improved Cassava Varieties on Farmers’ Income in Northern Agro-ecological Zone, Uganda

Akongo¹,

Otim²,

Turyagyenda³

et al. 2021

SAR

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“…The soils are mainly clay‐sandy in Mvuazi and sandy in Litoy. 9 Data on laboratory analyses conducted at the soil and water facilities at the University of Kisangani (UNIKIS) in Tshopo province and the Kongo University (KU) in Kongo Central province in DR Congo are summarized in Table 2 . In the savanna zones, soils are characterized by low fertility.…”

Section: Methodsmentioning

confidence: 99%

Screening cassava for time of maturity to respond to various market needs: Case study in African sub‐tropical zones

Mahungu

Ndonda

Bidiaka³

et al. 2021

J Sci Food Agric

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BACKGROUND Cassava evaluation trials are mostly harvested at 12 months after planting (MAP) irrespective of their actual maturity date, which includes the maximum accumulation of dry matter in tuberous roots. Depending on the market needs, some producers prefer to keep their crops up to 24 MAP and harvest sequentially when needed. Such varieties should mature early at 12 MAP and maintain or enhance their root dry matter rather than losing it. A modified breeding scheme has been suggested to evaluate selected lines from 12 to 24 MAP. In a harvest scheme such as this, many of the improved varieties lose their dry yield as starch is converted to sugar. Hence the breeding program in DR Congo started screening both early and late bulking varieties to identify those that can bulk early and keep their economically profitable dry root yield until late in the growing cycle. Six varieties and one local variety were subjected to several harvest dates ranging from 9 to 24 MAP. RESULTS In general, the best harvests occurred at 15 MAP. Variety Zizila continued to increase its dry root yield from 15 t ha−1 at 15 MAP to 20 t ha−1 at 24 MAP. However, the varieties Butamu and Disanka both with dry yields of 15 t ha−1 at 15 MAP reduced their dry root yields to 5 t ha−1 at 24 MAP, thus limiting themselves to early maturing varieties. CONCLUSION By assessing early generation populations in the clonal trials, study results revealed that breeders may lose around 15% of superior clones with good dry root yield from 12 to 24 MAP when limiting the selection at 12 MAP. © 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…This result indicates a benefit of using intercropping compared to sole cropping in terms of land use efficiency. Previous studies on cassava groundnut intercropping have ping over sole cropping in cassava-groundnut-based intercropping systems [16] and [17].…”

Section: Land Use Efficiencymentioning

confidence: 99%

Cassava Groundnut Intercropping: A Sustainable Land Management Practice for Increasing Crop Productivity and Organic Carbon Stock on Smallholder Farms

Yila¹,

Lebbie²,

Conteh³

et al. 2023

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Cassava-groundnut intercropping is not a common practice among smallholder farmers in Sierra Leone even though both crops are well suited for intercropping. On-farm trials were conducted in three locations (Bai Largor, Bassah, and Njala Kanima) in the Moyamba district during the 2021 cropping season to investigate the efficacy of cassava-groundnut intercropping for increasing crop productivity and soil organic carbon stock on smallholder farms in the Moyamba district, Southern Sierra Leone. The experimental design was a randomized complete block design in three replications with treatments of sole groundnut, sole cassava and cassava-groundnut intercropping. Data on the yield and yield components of cassava and groundnut were analysed using the PROC MIXED procedure of SAS 9.4 and means were compared using the standard error of difference (SED). The above-ground biomass, number of roots per plant, and fresh root yield of cassava were not significantly (p > 0.05) affected by the cassava-based cropping system. Averaged across locations, intercropping cassava with groundnut decreased the above-ground biomass, the number of roots per plant, and fresh root yield of cassava by 17%, 11%, and 17%, respectively. The above-ground biomass, number of pods per plant and fresh pod yield of groundnut were significantly (p < 0.05) affected by the groundnut-based cropping system. Averaged across locations, intercropping groundnut with cassava decreased the aboveground biomass, the number of pods per plant, and fresh pod yield of groundnut by 33%, 15%, and 31%, respectively. The cassava-groundnut intercropping treatment had favourable

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Enhancing yield and profitability of cassava in the savannah and forest zones of Democratic Republic of Congo through intercropping with groundnut

Cited by 6 publications

References 11 publications

Effects of Improved Cassava Varieties on Farmers’ Income in Northern Agro-ecological Zone, Uganda

Effects of Improved Cassava Varieties on Farmers’ Income in Northern Agro-ecological Zone, Uganda

Screening cassava for time of maturity to respond to various market needs: Case study in African sub‐tropical zones

Cassava Groundnut Intercropping: A Sustainable Land Management Practice for Increasing Crop Productivity and Organic Carbon Stock on Smallholder Farms

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