YIELDS AND QUALITY OF <i>PHASEOLUS</i> BEAN CULTIVARS UNDER FARMERS’ CONDITIONS IN EASTERN AND SOUTHERN AFRICA

Høgh‐Jensen, Henning; Kamalongo, D.; Ngwira, A.; Myaka, F.A.

doi:10.1017/s0014479713000641

Cited by 15 publications

(21 citation statements)

References 16 publications

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“…leaves (Ahiabor and Hirata (2003)), and that from common beans was assumed to be 10 % of yield. Pigeonpea grain, shell, stem and leaves N content used are 3.5, 1.2, 0.8 and 3.2 %, and P content is 0.32, 0.17, 0.2 and 0.21 %, respectively based on data from Myaka et al (2006) and Høgh-Jensen et al (2007) while N content for roots is taken as 2 %. Litterfall used for N input was assumed to contain 1.6 % N .…”

Section: Agronomic Surveymentioning

confidence: 99%

Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania

Kihara

Tamene²,

Massawe³

et al. 2014

Nutr Cycl Agroecosyst

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Improved agronomic management is important to reduce yield gaps and enhance food security in sub-Saharan Africa. This study was undertaken to understand contributing factors to observed yield gaps for maize in farmer fields and to demonstrate appropriate agronomic survey methods. The study aimed to (1) demonstrate an approach for farmlevel agronomic survey, (2) identify key crop production constraints and (3) define the nutrient input and output balances of different fields. Agronomic survey was conducted in 117 farmer fields randomly distributed in a 10 km by 10 km block in Babati, northern Tanzania. A semi-structured questionnaire and production measurements were used to collect data which were analyzed with regression classification and mixed effect models. The exploitable maize yield gap at farm-level reaches up to 7.4 t ha -1 , and only \5 % of fields achieve maize grain yield of 5 t ha -1 . Slope, plant density, distance from homestead, crop variety, timing of planting and period since conversion significantly influenced maize yields. For example, fields on flat land had up to 1.6 t ha -1 more maize grain yield than those on steep slopes while fields with plant density [24,000 plants ha -1 had 900 kg ha -1 more yield than those with less density. At least 52 % of the fields had negative nutrient balances. We conclude that cropping systems used in Babati should be preferentially supplemented with mineral fertilizers while optimizing plant density, increasing manure application and appropriate varietal choice in order to reduce the yield gaps.

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Section: Agronomic Surveymentioning

confidence: 99%

Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania

Kihara

Tamene²,

Massawe³

et al. 2014

Nutr Cycl Agroecosyst

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“…Each of the released varieties has economically important traits that make it attractive to smallholder farmers. ICP 9145 (released in 1987) andICEAP 00040 (released in 2000) are resistant to Fusarium wilt and harbour high on farm yield potential of up to 1.9 tons/ha (Høgh-jensen et al 2007). The short duration varieties are less tolerant to Fusarium wilt but have an added advantage in that they can be consumed as grain as well as a vegetable.…”

Section: Introductionmentioning

confidence: 99%

Determinants of agricultural technology adoption under partial population awareness: the case of pigeonpea in Malawi

2016

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There is exhaustive literature on technology adoption rates and the relationship between technology adoption and relevant socioeconomic and policy variables. Yet adoption estimates derived from the application of standard techniques such as the probit and tobit yield biased estimates. This paper applies the modern evaluation technique: the counterfactual outcome framework to data from about 400 households in Malawi to assess the patterns of diffusion and adoption of improved pigeonpea varieties and their determinants. We find the sample adoption rate of improved varieties to be 14 % while the potential adoption rate if the improved varieties were widely disseminated is estimated at 41 %. The adoption gap resulting from the incomplete exposure to the improved pigeonpea is 27 %. Moreover, adoption is also found to be high among female-headed households, older farmers and those with access to credit. The findings suggest that for increased adoption, there is need for increased involvement of extension workers is the dissemination of information about improved pigeonpea varieties, a robust pigeonpea seed system to increase seed availability to farmers as well as the need for improved access to credit.

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“…Maize is a staple food in sub-Saharan Africa where 95% of the maize produced constitutes a significant part of the daily diet (Høgh-Jensen et al, 2007). It is the primary food and cash crop grown in Tanzania, accounting for over 45% and 75% of the total cultivated land and cereal production, respectively (Shao, 2007).…”

Section: Introductionmentioning

confidence: 99%

Speed of adoption of improved maize varieties in Tanzania: An application of duration analysis

Beyene¹,

Kassie

2015

Technological Forecasting and Social Change

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YIELDS AND QUALITY OF PHASEOLUS BEAN CULTIVARS UNDER FARMERS’ CONDITIONS IN EASTERN AND SOUTHERN AFRICA

Cited by 15 publications

References 16 publications

Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania

Agronomic survey to assess crop yield, controlling factors and management implications: a case-study of Babati in northern Tanzania

Determinants of agricultural technology adoption under partial population awareness: the case of pigeonpea in Malawi

Speed of adoption of improved maize varieties in Tanzania: An application of duration analysis

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