Potential Nitrogen Contribution of Climbing Bean to Subsequent Maize Crop in Rotation in South Kivu Province of Democratic Republic of Congo

Lunze, L.; Ngongo, Mulangwa

doi:10.1007/978-90-481-2543-2_68

Cited by 3 publications

(12 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The technique of Tithonia use was fine-tuned by Ngongo (2002), who studied the appropriate time for biomass application. The time of application prior to bean sowing varied from 0 to 7 days.…”

Section: Methods Of Application Of Tithonia Biomassmentioning

confidence: 99%

“…In Rwanda and DR Congo, considerable bean yield increase is obtained, 227% in Rwanda (Ruganzu and Nabahungu, 2002) and 68% in DR Congo (Ngongo, 2002).…”

Section: Biomass Transfermentioning

confidence: 99%

“…The effect of the rate of application on bean yield of monocrop was evaluated in DR Congo and Rwanda (Ngongo, 2002;Ruganzu and Nabahungu, 2002;Nabahungu and Ruganzu, 2001). In Rwanda, the study was conducted on soils with pH varying from 3.8 to 4.9.…”

Section: Rate Application Of Tithonia Biomassmentioning

confidence: 99%

“…In the later study, they found that the optimum rate of application on maize could be set at 5 t ha -1 in the long rainy season while in short rainy season, the recommendation could be higher at 7.5 t ha -1 . The rate of application in bean-maize mixed cropping, a more common cropping system in farmers' field, was evaluated by Ngongo (2002) in DR Congo (Table 11). In this system, the best yield of both crop either sole crop or intercropped was obtained at the rate of 8 t.ha -1 ofbiomass.…”

Section: Rate Application Of Tithonia Biomassmentioning

confidence: 99%

“…On-station and on-farm farmer participatory trials were conducted by Lunze and Ngongo (2011) to assess the beneficial effects of the climbing bean on the subsequent maize crop in rotation, compared to bush bean and continuous maize cropping systems. The estimate of N contribution from the climbing bean to the system estimated as N fertilizer replacement values (Bado, 2002), and these values varied from 15 kg N ha -1 to 42 kg N ha -1 in the first season of rotation.…”

Section: Climbing Bean Rotation Effectsmentioning

confidence: 99%

See 4 more Smart Citations

Integrated Soil Fertility Management in Bean-Based Cropping Systems of Eastern, Central and Southern Africa

Lunze¹,

Abang²,

Buruchara³

et al. 2012

Soil Fertility Improvement and Integrated Nutrient Management - A Global Perspective

View full text Add to dashboard Cite

Section: Methods Of Application Of Tithonia Biomassmentioning

confidence: 99%

“…In Rwanda and DR Congo, considerable bean yield increase is obtained, 227% in Rwanda (Ruganzu and Nabahungu, 2002) and 68% in DR Congo (Ngongo, 2002).…”

Section: Biomass Transfermentioning

confidence: 99%

Section: Rate Application Of Tithonia Biomassmentioning

confidence: 99%

Section: Rate Application Of Tithonia Biomassmentioning

confidence: 99%

Section: Climbing Bean Rotation Effectsmentioning

confidence: 99%

See 3 more Smart Citations

Integrated Soil Fertility Management in Bean-Based Cropping Systems of Eastern, Central and Southern Africa

Lunze¹,

Abang²,

Buruchara³

et al. 2012

Soil Fertility Improvement and Integrated Nutrient Management - A Global Perspective

View full text Add to dashboard Cite

Profitability of diammonium phosphate use in bush and climbing bean-maize rotations in smallholder farms of Central Burundi

Niyuhire

Pypers

Vanlauwe

et al. 2017

Field Crops Research

View full text Add to dashboard Cite

A B S T R A C TSoil fertility decline is a major constraint to bean (Phaseolus vulgaris L.) and maize (Zea mays) production in the Central Highlands of Burundi. Nutrient sources, specifically fertilizers, are paramount to increasing the production in the regions. Hence, improving fertilizer use efficiency is considered as a key factor towards sustainable intensification. The use of grain legumes with low harvest indices, such as climbing beans, are assumed to improve soil fertility and fertilizer use efficiency. This study compares the rotational effects of bush and climbing bean varieties on maize and evaluates the profitability of diammonium phosphate (DAP, fertilizer in the bean-maize rotations in 59 smallholder farms of Mutaho district, Gitega Province in Central Burundi. The application of DAP fertilizer significantly increased the grain yields by 14% and 21% for bush and climbing beans, respectively (P < 0.001). Positive effects of bean varieties were large for about 80% of the farmers. Climbing beans in general yielded more than bush beans for about two thirds of the farmers and fertilizer effects were positive. In the bean-maize rotations, the fertilizer induced on average a yield increase of 8% and 22% for maize following bush and climbing beans, respectively. Maize grain yields were significantly (P < 0.001) higher following climbing beans than following bush beans. The value cost ratio (VCR) more than doubled compared with the common practice (bush bean-maize rotation). Variation was substantial, and for approximately 67% of the farmers, DAP application was profitable (VCR > 2 $ $ −1 ) in a climbing bean-maize rotation while 45% of the farmers in a bush bean-maize rotation. Regression tree analysis showed that targeting fertilizer use to soils with higher C and clay content, and ensuring timely planting are the predominant factors to ensure fertilizer response and profitable returns. This study confirms the need for integrated soil fertility management (ISFM), and that a combination of judicious fertilizer use, an improved grain legume (climbing bean) and adjustment to local conditions (targeting to responsive soils) maximizes economic returns of legumecereal rotation systems.

show abstract

Ex Ante Appraisal of Agricultural Research and Extension

Lambrecht¹,

Vranken²,

Merckx³

et al. 2015

Outlook Agric

View full text Add to dashboard Cite

Research on agricultural technology adoption generally occurs ex post, after the introduction of a technology. In this paper, the authors use a choice experiment to reveal farmers' preferences for new agricultural technologies ex ante, before new technologies are developed and introduced. The authors implement a choice experiment among 200 farmers in Burundi and use mixed logit models to analyse preferences for specific traits of improved climbing bean varieties. It was found that farmers had a strong preference for climbing bean varieties that resulted in higher yields and improved soil fertility, while the maturation period and the responsiveness to fertilizer were less important. Seed price was found to matter only for the most food-insecure farmers. These choice experimental results can inform agricultural research and extension programmes ex ante to take into account farmers' preferences and accelerate the adoption of new technologies.

show abstract

Potential Nitrogen Contribution of Climbing Bean to Subsequent Maize Crop in Rotation in South Kivu Province of Democratic Republic of Congo

Cited by 3 publications

References 7 publications

Integrated Soil Fertility Management in Bean-Based Cropping Systems of Eastern, Central and Southern Africa

Integrated Soil Fertility Management in Bean-Based Cropping Systems of Eastern, Central and Southern Africa

Profitability of diammonium phosphate use in bush and climbing bean-maize rotations in smallholder farms of Central Burundi

Ex Ante Appraisal of Agricultural Research and Extension

Contact Info

Product

Resources

About