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Bucheyeki T.L.,University of KwaZulu - Natal | Shenkalwa E.M.,Tumbi Agricultural Research and Development Institute | Mapunda T.X.,Tumbi Agricultural Research and Development Institute | Matata L.W.,Tumbi Agricultural Research and Development Institute
Communications in Biometry and Crop Science

Sorghum plays a significant role for the smallholder farmers of Tanzania. It is the chief source of food and income for majority of Tanzanians but yields are low and crop management lacking leading to smallholder food and income insecurity. An experiment was conducted in the Nzega and Igunga districts of Tabora to compare improved cultivars Tegemeo, Pato and Macia to the commonly used landrace Wilu for adaptation and yield, assess farmers' preferences, and assess the economic potential of improved sorghum cultivars. Cultivar performance was measured for three seasons in a randomized complete block design with three replications per location. Tegemeo out-yielded other cultivars and had high average yields (2580 kg ha -1). Wilu had the lowest yield (1460 kg ha -1) but had consistent yields across environments. Ninety farmers developed seven criteria for cultivars assessments. Results of the farmers' rankings indicated Tegemeo was the best cultivar and recommended it be grown in the area. An economic analysis indicated the potential of doubling sorghum grain yield from 1000 to 2000 kg ha -1 and income from 525,600 to 928,800 TSh ha -1. The combined statistical, farmers assessment and economic analysis showed changing order of importance of some cultivars which draws attention to breeders and policy makers on the importance of farmer's indigenous technical knowledge acknowledgement and participatory plant breeding in cultivars selection. © CBCS 2010. Source

Bucheyeki T.L.,University of KwaZulu - Natal | Bucheyeki T.L.,Tumbi Agricultural Research and Development Institute | Erasto Shenkalwa M.,Tumbi Agricultural Research and Development Institute | Theofora Mapunda X.,Tumbi Agricultural Research and Development Institute | Leah Matata W.,Tumbi Agricultural Research and Development Institute
African Journal of Agricultural Research

A client oriented groundnut research was carried out in Tabora, Tanzania. Objectives were to solicit farmers' preferences on groundnut production and evaluate groundnut varieties under varying environments and conditions. Semi structured questionnaires and focus groups were used to solicit farmers' opinions. On-station and on-farm trials were conducted based on recommendations suggested by farmers. On-station trial had 3 replications with 5 plots each laid in a randomized complete block design. Plot size was 25 m2. The net harvested area was 15 m2. The spacing used was 0.9 × 0.15 m. On-farm trials involved 9 farmers each planting 5 varieties. Varieties used were Johari, Pendo, Nyota, Sawia and farmer. SPSS and Genstat computer software were used to analyse survey and field trials data, respectively. Drought and low yielding varieties were observed as the most serious problems in the area. Pendo and Johari varieties constantly out yielded other varieties and ranked first and second, respectively, under research and farmers managements. Genotypes sum of squares accounted for 54.93% of the variability. This study also revealed that, under some conditions, researchers and farmers' variety selection criteria coincided. Based on the information generated by this study, Pendo and Johari were recommended. © 2010 Academic Journals. Source

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