ABSTRACT An experiment was conducted at Ilonga Agricultural Research Institute during the 2013 cropping season in order to assess the efficiency of soybean genotypes in phosphorus uptake and nitrogen fixation. The study was conducted between March 2013 and July 2013. The experiment was designed as 4 x 7 factorial experiments in randomized complete block and laid out in split-plots arrangement with three replications. The main plots were four P fertilizer levels (0, 15, 30 and 45 kg P ha-1 ), ...
ABSTRACT This study was conducted in Mbeya, Morogoro, Kilimanjaro, Shinyanga and Dar es Salaam regions. The overall objective of the study was to establish the magnitude of rice blast disease in Tanzania and its contribution to yield losses. Rice is an important staple food crop and is affected by blast disease with suspected high yield losses of up to 100%. Surveys were conducted in two years (2012 and 2014) to observe disease prevalence of rice blast disease in two different ecosystems in M...
ABSTRACT The common bean (Phaseolus vulgaris L) is the most important food legume consumed worldwide. Sustainable production ofthe common bean in Tanzania is hampered by number of constrains including angular leaf spot (ALS), common bacterial blight (CBB), bean common mosaic virus/bean common mosaic necrosis virus (BCMV/BCMNV) and anthracnose (ANTH) diseases. The objective of this study was to develop common bean lines which will have resistances to ALS, CBB, BCMV/BCMNV and ANTH diseases by i...
BSTRACT Common bean (Phaseolus vulgaris L.) is the most important crop for the livelihoods of smallholder farmers in Tanzania; it is the most produced pulse by small-scale farmers for household consumption and earning income after selling surplus. Common beans are intercropped with maize or with permanent crops such as banana or coffee and some few farmers grow it as a sole crop. The objectives of this study were to assess the effects of water stress on seed yield of common bean under control...
ABSTRACT Most small scale farmers in Morogoro apply inorganic fertilizers to vegetable crops they grow. However no standard fertilizer application recommendations exist. This may lead to under supply or over supply of nutrients, resulting into economic loss and environmental hazard. Experiments were conducted to establish and recommend the best optimum NPK fertilizer application levels for tomato, onion and amaranth crops in Morogoro Municipal agro - ecological conditions. The experiments wer...
ABSTRACT Cassava roots represent the future of food and income generation for over 800 million people in the world however, its production is threatened by virus disease; Cassava brown streak disease (CBSD). Biotechnology approaches are fast and powerful methodologies in cassava improvement and breeding. Construction of high-density and high quality genetic map in cassava would be of great benefit in combating CBSD. Conventional study was conducted in Naliendele, Kibaha and Dodoma for Tanzani...
ABSTRACT Cassava roots represent the future of food and income generation for over 800 million people in the world however, its production is threatened by virus disease; Cassava brown streak disease (CBSD). Biotechnology approaches are fast and powerful methodologies in cassava improvement and breeding. Construction of high-density and high quality genetic map in cassava would be of great benefit in combating CBSD. Conventional study was conducted in Naliendele, Kibaha and Dodoma for Tanzani...
ABSTRACT Fusarium wilt is a plant disease caused by Fusarium udum (Butler). It is a soil and seed borne fungus which causes significant yield losses in susceptible cultivars throughout the pigeonpea growing areas. Numerous control measures have been suggested to alleviate the problem but their success has still remained low due to prohibitive costs. Development of resistant pigeonpea varieties is sought as an alternative for control of the disease. However, the task of developing resistant pi...
ABSTRACT A survey was carried out in three potato growing Districts of the Southern Highland Zone of Tanzania to determine incidence and severity of bacterial wilt of potato caused by Ralstonia solanacearum and characterizing the strains of the causing pathogen. Ten villages from each district and five fields from each village were surveyed. The fields and plants were randomly selected and bacterial wilt symptoms identified. Wilt incidence was recorded based on number of plants showing sympto...
ABSTRACT Fruit flies are among the major pests of cucurbits in many parts of Tanzania. Studies on fruit flies (Diptera: Tephritidae) attacking cucurbit in Morogoro were conducted at Sokoine University of Agriculture (SUA). Objectives of the studies were: to compare incidences and infestation rates of selected fruit fly species in different stages of cucumber fruit, to establish duration and determine survival of immature stages of Bactrocera cucurbitae in selected cucurbitaceous hosts. Cucurb...
ABSTRACT Lack of simple storage facilities in tomato supply chain contributes to high postharvest losses of tomato in Tanzania. In the field, harvested tomatoes are left in an open area and occasionally covered with grasses or sometimes under shade trees. Refrigerated storage structures are relatively expensive to build and operate; and most people living in rural areas cannot afford. This study was conducted to determine the effect of on farm storage technology (zero energy cool chamber) wit...
ABSTRACT Sweet sorghum (Sorghum bicolor L.) has been recognised widely as a potential alternative source of biofuel because of its high fermentable sugar content in the stalk. With international focus on alternative fuel sources, investors are looking at sweet sorghum as a feedstock source for bioethanol production without compromising sorghum’s primary use for food, fodder, and animal feed. However, for researchers to maximize its feedstock potential and to be used in future there is a nee...
ABSTRACT Cashew (Anacardium occidentale L.) is an important export crop in a number of tropical countries and is the main cash crop and the leading source of income for over 300,000 households in Southern and Eastern Tanzania. Farmers still, however use unimproved varieties, which account for low yields. Thirty cashew genotypes were evaluated to assess genetic variability for higher yield and its components at two locations (Nachingwea and Chambezi) in the Southern and Eastern zones of Tanzan...
ABSTRACT Cassava (Manihot esculenta Crantz) is one of the important crops in the world for food and income security. Cassava production is challenged by weeds as they reduce yield to 100%. Effective weed management in cassava production depend determination of weed species diversity and determination of Critical Period for Weed Removal (CPWR). A study was conducted in Zambia, to document weed species diversity in cassava growing areas of Chongwe and Kaoma districts in Zambia, determine the cr...
ABSTRACT The experiment was conducted at Agricultural Research Institute (ARI)–Ukiriguru Mwanza, Tanzania from November 2011 to May 2012, aiming at improving upland rice performance through enhanced soil fertility and water conservation methods. A split–split plot experiment in randomized complete block design with three replications and three factors that were (a) upland rice cultivars (WAB 450, NERICA1 and NERICA4) (b) fertilizer types, (urea 80kg N/ha, farm yard manure 5 t/ha and contr...