Department of Horticulture

Permanent URI for this collectionhttps://dspace.njala.edu.sl/handle/20.500.144402/161

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    Evaluation of Tomato (Solanum lycopersicum L.) Genotypes for Horticultural Characteristics on the Upland in Southern Sierra Leone
    (Canadian Center of Science and Education, 2017-05-15) Kanneh, Salia Milton
    Notwithstanding the importance of tomato in human diet, the average yield of the crop in Africa hardily exceeds 7.5 tha-1. There is continuous unavailability of high yielding cultivars that are adapted to diverse environment and suitable for different purposes. Consequently, evaluation of introduced tomato genotypes for desired horticultural characteristics to identify superior genotypes for additional improvement in yield and yield related traits is indispensible. Hence eight tomato (Solanum lycopersicum L.) genotypes including parental were field planted in a randomized complete block design with three replications at the Department of Horticulture Nursery Unit, School of Natural resources Management, Njala University, Njala Campus, Moyamba District, Southern Sierra Leone to evaluate them for good horticultural traits. Data collected include plant height at 50% and 100% flowering, stem girth at 50% and 100% flowering, days to first, 50% and 100% flowering, days to maturity, number of fruits set per plant, number of fruits harvested per plant, average fruit weights, fruit length, fruit diameter, fruit flesh thickness, locule number, marketable and nonmarketable fruits per plant. Results from the study indicated that all genotypes studied are adaptable to the Sierra Leone climatic conditions. P1 (097) recorded the highest number of fruits set per plant, number of fruits harvested per plant and tallest and largest plant height and stem girth at 100% flowering. BC2F2 had the highest locule number while R3P9 had the heaviest fruit weight. P2 (213) had the thickest fruit flesh thickness and longest duration to fruit maturity respectively while P1 (097), BC1F2 and R3P9 had the same number of shortest days to maturity. Regarding fruit length and diameter, R3P8 and R6P6 had the longest and widest. With respects to marketable and nonmarketable fruit per plant, P1 (097) recorded the highest correspondingly.
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    Impact of Different Sources of Organic Fertilizer on Growth and Yield Parameters of Tomato (Solanum lycopersicum L.)
    (2024) Jalloh, Osman Bashir Salam
    This study investigates the impact of different organic fertilizer sources on the growth, phenology, and yield parameters of tomato (Solanum lycopersicum L.) in Njala, Moyamba District, Southern Sierra Leone. The treatments included NPK 15:15:15 fertilizer, goat dung, pig dung, and poultry manure in a Randomized Complete Block Design (RCBD) with three replications. Results revealed significant differences in morphological characteristics, with poultry manure enhancing plant height (63.29 cm), stem girth (0.88 cm), leaf number (69.23 leaves), and leaf area (352.94 cm²) compared to other treatments. In terms of phenology, poultry manure also resulted in the earliest flowering (30.14 days) and fruit set (33.05 days), indicating its superior role in promoting rapid reproductive development. Moreover, yield parameters showed that poultry manure produced the highest fresh fruit number (442.21 fruits) and weight (502.04 kg/ha), outperforming goat dung (309.06 fruits; 444.55 kg/ha) and significantly surpassing pig dung (203.13 fruits; 108.69 kg/ha). NPK fertilizer demonstrated moderate effects, producing 353 fruits and 360.13 kg/ha, but did not match the performance of organic fertilizers. These findings underscore the effectiveness of organic manure, particularly poultry manure, in enhancing the growth and yield of tomato plants, suggesting its potential as a sustainable alternative to synthetic fertilizers. This study highlights the importance of integrating organic fertilizers into local agricultural practices to improve food security and promote sustainable farming in Sierra Leone. Therefore, it is recommended that vegetable farmers within Njala Community should incorporate the use of poultry manure and Goat dung at 5t/ha rate into their activities to achieve high yield potential of tomato production