Browsing by Author "Msogoya, T."
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Item Effects of pre-harvest application of hexanal formulation on losses and quality of tomato (Solanum lycopersicum Mill)(Tanzania Journal of Agricultural Sciences, 2020) Jaspa, S; Msogoya, T.; Tryphone, G.; Mtui, H .D.; Baltazari, A.; Kudra, A.; Mwatawala. M. W.The study was conducted to determine the effects of field application of enhanced freshness formulation (EFF) on pre-harvest losses and tomato quality. The parameters assessed include pest defects on fruits, marketable and percentage non-marketable fruit, fruit firmness, and fruit weight. Three popular open pollinated varieties grown in Tanzania namely, Mwanga, Rio Grande, and Tanya were used. The experiment was laid out as Completely Randomized Design in a 4 x 4 x 3 factorial arrangement. Three factors, EFF concentrations, time of EFF application prior to the harvest, and tomato variety were evaluated. EFF concentrations of 0.01, 0.02, 0.04% m/v were tested. Untreated plots were included as control. The time of application was 7, 14, 21, and 28 days prior to the harvest. The results showed that pre-harvest application of EFF at 0.01 percent reduced percent non-marketable tomato fruit of Mwanga, Rio Grande, and Tanya cultivars by 28.99, 26.98 and 37.17 percent, respectively compared with the control. Moreover, pest defects were reduced by 29.45, 24.51, and 27.45 percent for Mwanga, Rio Grande, and Tanya, respectively over the control. Furthermore, fruit firmness was increased by 7.69 N/mm2, 6.33 N/mm2 and 5.98 N/mm2 compared with the control for tomato cv. Mwanga, Rio Grande, and Tanya, respectivelyItem Evaluation of field performance and storage of some tropical short-day onion (Allium cepa L.) cultivars(West African Journal of Applied Ecology, 2005) Msuya, D. G.; Reuben, S. O.; Mbilinyi, L. B.; Maerere, A. P.; Msogoya, T.; Mulungu, L. S.; Misangu, R. N.The storage of bulbs of onion (Allium cepa L.) is very crucial to ensure its availability throughout the year. Experiments were conducted at Sokoine University of Agriculture to evaluate the growth and yield characteristics of some tropical short–day onion cultivars and the storability of their bulbs after harvest. The first experiment in 1994 involved 21 cultivars evaluated for their growth and yield variables. The second experiment, involving six cultivars, was carried out in 1996 and in addition to performance evaluation, the storability of bulbs was investigated. Results showed significant differences among the cultivars in yield, yield components and storability. Granex 429 had the highest yield among cultivars in both trials, but had very poor storability. Serrana and XPH 6074 had long storability and maintained more than 50% of their weight after 5 months of storage. These two cultivars are promising as good sources of genes to incorporate storage traits in other cultivars of onion.