Browsing by Author "Maerere, Amon Petro"
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Item Controlling Tuta absoluta (Meyrick) by Selected Crude Plant Extracts in the Laboratory and in the Screen House(David Publishing, 2019) Matendo, Rehema Esther; Nonga, Hezron Emmanuel; George, Bakari; Nabintu Bintu, Ndusha; Mwatawala, Maulid Walad; Maerere, Amon PetroEffects of Commiphora swynnertonii, Synadenium glaucescens and Allium sativum extracts on the tomato leaf miner, Tuta absoluta (Meyrick) were evaluated on the adults and in screen house conditions. The adult stage was involved with 30 adults that were reared in an insectarium, the experimental design was a completely randomized design (plant extracts from three plants species three doses of 2%, 4% and 8%). In the screen house, experimental dispositive was a completely randomized block design (two varieties of tomatoes three plants extracts). Larval counts were performed after 0, 1, 2, 3 and 7 d of treatment, 40 tomato leaves (10 4 replicates) were randomly taken from each treatment. The mean percentage mortality of adults was recorded daily for 5 d. Results indicated that, each plant extract caused significant mortality to adults of T. absoluta after 5 d in comparison to the control. Leaf dipping against adult of T. absoluta proved to be the most effective for all plant extracts at 30%-100%. Commiphora resulted in the adults’ mortality of 100%. In the screen house Commiphora showed the high reduction of infestation for Tanya and Cal J varieties. Treatment with this plant extract resulted in the highest fruit yield and the lowest yield loss compared to all the plant extracts. C. swynnertonii extract is recommended into integrated pest management strategies for the control of T. absoluta.Item Etude de la ramification de deux cultivars d’Ananas (Ananas comosus (L.) MERR.); “Cayenne lisse” et “Queen victoria”, en relation avec leur developpement sous diverses conditions climatiques de Pile de la Reunion.(University Henri Poincar6, 1996) Maerere, Amon PetroItem Morphological characterization and yield of pepper (Piper nigrum L.) types grown in Morogoro District, Tanzania(CABI Agriculture and Bioscience) Shango, Abdul Jafari; Majubwa, Ramadhani Omari; Maerere, Amon Petro