Banana farming is threatened currently by certain constraints as the bacterial Wilt and the bad farming practice. The aim of this study is to select the best fungicide that increases the percentage of reject reprise for using to decontaminate reject from macro propagation after weaning, and choosing the high-performance varieties with high percentage of rejects. The split plot experimental device was used. Two factors were in this study as banana varieties and fungicides. The former one has two levels as Mancozeb and Victory and banana varieties, three levels as Yangambi, Cavendish and Thick-Michel variety which were compared to control, reject without decontamination. The application of fungicides didn't involve date and reprise rate of reject between them in comparison with dismissals of three banana varieties compare to no disinfected reject before plantations. The rate varies between 90 and 100 %. Additionally, the dimension and number of leaves didn’t be influenced reprise by reprise rate of rejects of banana varieties. Study wasn’t oriented on growth parameters after plantations. The reprise rate of reject doesn't vary between the banana varieties. The reject could or not be disinfected for economic reasons because the high percentage of reject is always obtained. Thereby, it would be preferable to not disinfect reject because plantations can succeed.
In South Kivu, banana occupies the first place in terms of cultivated area. Although the yield of bananas is still low, production varies between 4 and 10 tons per hectare per year. However, heavy threats from diseases and pests are currently affecting the production of bananas and plantains. Among these threats, we find bacterial wilt of banana. The aim of this study is to compare four varieties of banana for the production of rejects by the method of macro propagation in Mushweshwe. Four varieties of banana were used so, two of beer (Yangambi and Nshikazi) and two others cooking varieties (Cavendish and Gros Michel) were multiplied by the method of macro propagation. The 4 varieties combined 200 strains (cormes) at the rate of 50 units per variety. The stumps were sterilized with hot water. The results showed mother strains of the Nshikazi variety had a significantly lower mean circumference than the others, but the average number of rejects produced was not significantly different between the four varieties even if this variety Nshikazi (53 rejects) was high followed by Yangambi 35 rejects in second place, followed by Cavendish with 34 rejections and finally Gros Michel with 32 rejects. The correlation analysis between strain size and the number of weaned rejects showed that at a certain level, strain size negatively affected the production of rejects. Thus all the varieties used are good for the production of rejects. Finally, the estimate of production cost shows that the use of local equipment for the production of rejects costs less than the use of the standard unit.