Altitude effect on plantain growth and yield during four production cycles in North Kivu, eastern Democratic Republic of Congo

Sivirihauma, C.; Blomme, Guy; Ocimati, W.; Vutseme, L.; Sikyolo, I.; Valimuzigha, Kambale; Langhe, Edmond De; Turner, D. W.

doi:10.17660/actahortic.2016.1114.20

Cited by 13 publications

(21 citation statements)

References 10 publications

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“…The yield of all cultivars except 'Lai' was higher at lower altitudes (Burundi) compared to medium altitudes. This association was also observed in previous findings (Sikyolo et al, 2013;Sivirihauma et al, 2016;Soares, 2012) which concluded that most assimilates could go towards sucker development at high altitude, where a higher frequency of sucker production is observed for most cultivars.…”

Section: Discussionsupporting

confidence: 88%

“…Yield differed with cultivars and growth performance. All cultivars except 'To'o' produced big bunches (15-20kg) and had good yields (10-23 t/ha/year) with differences in performance most likely due to altitude, in conformity with Turner et al, (2016) who observed altitude having a negative association with bunch weight, particularly when nitrogen, phosphate, potassium (NPK) and organic matter (OM) concentrations are low. 'Apantu', 'Lahi' and 'Pelipita' produced good bunch sizes in all sites while 'Bira' and Lai got bunches of similar sizes only in the medium and highest altitude sites in DRC.…”

Section: Discussionsupporting

confidence: 59%

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Agronomic performance of provitamin A-rich banana cultivars in Burundi and the Democratic Republic of Congo

Kamira¹,

Simbare²,

Sivirihauma³

et al. 2021

Afr. J. Agric. Res.

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Vitamin A deficiency (VAD) is a major global health issue, contributing to morbidity and mortality. East and Central Africa face VAD prevalence that exceeds the World Health Organization (WHO) threshold of 15%. In Burundi and the Democratic Republic of Congo (DRC), VAD prevalence is greater than 43% in rural communities. Promoting vitamin A-rich foods (including banana) is an effective and sustainable strategy to address VAD in poor rural communities. Supported principally by HarvestPlus over more than a decade, banana researchers have been evaluating the performance of high provitaminA banana cultivars to address this challenge. This study evaluated the agronomic performance of six provitamin A-rich banana cultivars originally from outside Burundi and Eastern DRC. Growth and yield parameters were collected for the first, second and third crop cycles. Results revealed that growth and yield parameters were significantly affected by the interaction between sites and cultivars (P<0.05). Banana cultivar yield was also influenced by the combined effect of bunch weight and crop cycle duration. The most promising cultivars in terms of yield were 'Apantu-AAB', 'Lahi-AAB', 'Lai-AA', 'Bira-AAB' and 'Pelipita-ABB' across all sites and crop cycles. This indicates that although ecological factors could have influenced their performances over sites, genotype could be the most important influencing factor. These evaluations provide hard evidence of the high potential for adoption of the most promising cultivars by the local community members to boost (pro) vitamin A consumption and effectively eliminate VAD.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionsupporting

confidence: 59%

Agronomic performance of provitamin A-rich banana cultivars in Burundi and the Democratic Republic of Congo

Kamira¹,

Simbare²,

Sivirihauma³

et al. 2021

Afr. J. Agric. Res.

View full text Add to dashboard Cite

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“…The contrasts of the findings of the present study with those of other studies may be due to the differences in growing environments in Qinghai and other regions. As mentioned in previous studies, the altitude has great effect on growth and yield [44]. In our study, the experiment conducted in high altitude area, and the annual average temperature and precipitation are lower than other producing areas in general.…”

Section: Discussionmentioning

confidence: 48%

Nitrogen Fertilizer Levels Affect the Growth and Quality Parameters of Astragalus mongolica

et al. 2020

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Owing to overexploitation, wild resources of Astragalus mongolica, a Chinese herbal plant that is widely distributed in the arid and semi-arid areas of Northern China, have gradually become exhausted, and therefore, commercial cultivation is increasingly important to meet the growing demand for astragalus and reduce the pressure on wild populations. Nitrogen level is an important factor that affects the yield and quality of A. mongolica. However, uniform standards for fertilization among production areas have not yet been determined. In this study, the effect of nitrogen fertilizer treatment on the yield and quality of A. mongolica in the Qinghai-Tibet Plateau was explored using a control treatment (no added nitrogen, N0) and five different nutrient levels: 37.5 kg/ha (N1), 75 kg/ha (N2), 112.5 kg/ha (N3), 150 kg/ha (N4), and 187.5 kg/ha (N5). According to grey relational analysis, the optimal nitrogen fertilizer treatment was the N4 level followed by the N5 and N2 levels. Nitrogen fertilizer significantly increased the root biomass, plant height, root length, and root diameter. However, nitrogen fertilization had no significant effect on the content of Astragaloside IV and mullein isoflavone glucoside. The content of ononin and calycosin continually accumulated throughout the growing period. The results showed that the ononin and calycosin content under N4 and N2 is higher than other levels and there is not significantly different between different nitrogen fertilizer levels about them. The content of formononetin decreased gradually with the progression of the growing season. The optimal nitrogen fertilizer treatment for A. mongolica is recommended to be 150 kg/ha and the content of active compounds and yield were observed to reach the maximum in October.

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“…This suggests an osmotic adjustment mechanism triggered by the plants in the alpine regions to adapt and survive to such conditions. Moreover, high altitude and the corresponding lower temperatures were also shown to affect the functional leaf number and the yield of plantains in North Kivu, DR Congo [42]. A high altitude effect observed in the present study on the growth and some metabolites accumulation in a wolfberry, could be overcome by searching in a large diversity, genotypes with ability to adapt to high altitude and lower temperatures and use them to improve the cultivars grown in high altitude areas.…”

Section: Discussionmentioning

confidence: 58%

Changes in Metabolome and Nutritional Quality of Lycium barbarum Fruits from Three Typical Growing Areas of China as Revealed by Widely Targeted Metabolomics

Wang

Li²,

Fan³

et al. 2020

Metabolites

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This study aimed at assessing the climatic factors influencing the wolfberry fruit morphology, and the composition of its nutritious metabolites. The cultivar Ningqi1, widely grown in Northwest China was collected from three typical ecological growing counties with contrasting climatic conditions: Ningxia Zhongning (NF), Xinjiang Jinghe (XF) and Qinghai Nomuhong (QF). During the ripening period, 45 fruits from different plantations at each location were sampled. A total of 393 metabolites were detected in all samples through the widely targeted metabolomics approach and grouped into 19 known classes. Fruits from QF were the biggest followed by those from XF and NF. The altitude, relative humidity and light intensity had negative and strong correlations with most of the metabolites, suggesting that growing wolfberry in very high altitudes and under high light intensity is detrimental for the fruit nutritional quality. Soil moisture content is highly and negatively correlated with vitamins, organic acids and carbohydrates while moderately and positively correlated with other classes of metabolites. In contrast, air and soil temperatures exhibited positive correlation with majority of the metabolites. Overall, our results suggest high soil and air temperatures, low altitude and light intensity and moderate soil moisture, as the suitable conditions to produce Lycium fruits with high content of nutritious metabolites.

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Altitude effect on plantain growth and yield during four production cycles in North Kivu, eastern Democratic Republic of Congo

Cited by 13 publications

References 10 publications

Agronomic performance of provitamin A-rich banana cultivars in Burundi and the Democratic Republic of Congo

Agronomic performance of provitamin A-rich banana cultivars in Burundi and the Democratic Republic of Congo

Nitrogen Fertilizer Levels Affect the Growth and Quality Parameters of Astragalus mongolica

Changes in Metabolome and Nutritional Quality of Lycium barbarum Fruits from Three Typical Growing Areas of China as Revealed by Widely Targeted Metabolomics

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