BSTRACT Alectra vogelii has been the major constraint known to attack leguminous species especially to cowpea production. Identification of genetic variation of A.vogelii is a pre-requisite for developing improved cowpea varieties. Hence, the objective of the experiment was the identification of phylogenetically differences and differential responses of A. vogelii found in cowpeas, bambara groundnuts and sunflower from selected parts of Malawi and Tanzania.The first objective, total of 240 SS...
ABSTRACT Natural vanilla (Vanilla planifolia G. Jackson, syn. V. fragrans) is native to the tropic forest of Mexico. It is now cultivated in humid tropical areas of Africa, America, Asia and Australia continents. In Tanzania it had been cultivated since 1940s in Kagera region but decline in coffee prices in the world market in the 1990s resulted into more cultivation of the vanilla crop as an alternate crop in Kagera and Kilimanjaro regions. Vanilla which had a remarkable high price compared ...
ABSTRACT A field experiment was conducted during the 2008/09 short rain season in three major agro-ecological zones of Bukoba and Missenyi districts, Tanzania. The agroecological zones were characterized as follows based on the amount of rainfall: high (≥1500 mm), medium (1200 mm) and low (800 mm). Objectives of the study were to investigate the diversity of bean landraces in the areas, assess the effect of environment on genotypes performance, determine relationship among plant characteris...
ABSTRACT In Northern Tanzania, yield of maize ranges between 0.5 – 0.8 t ha-1 compared with the yield potential of 4–6 t ha-1 under research conditions resulting to yield gap of 5.2 t ha-1. Major cause of low maize yield is low soil fertility due to insufficient use of fertilizers. A study was undertaken at Miwaleni (3º 25´ 30´´S and 37º 26´ 45´´ E) to determine the productivity of newly released maize varieties by fertilizer application in maize growing area of Moshi rural distri...
ABSTRACT In vivo macropropagation either alone or in combination with benzlyamimopurine (BAP) is an alternative simple technique for banana multiplication but has not been applied to recalcitrant plantain such as cv. “Itoke Sege”. This study was conducted to determine the effect of BAP concentration on in vivo multiplication and genetic stability among in vivo derived regenerants of plantain cv. „Itoke sege‟. An experiment was laid out in RCBD with four treatments each replicated thre...
ABSTRACT Ralstonia solanacearum is a bacterium recognized as a major wilt causing phytopathogen with an unusual broad host range. This study aimed at determining the distribution of the bacteria along the coast of Tanzania and environmental factors influencing incidence and disease severity. It also aimed to define the population structure of the strains in terms of its biology and phylogenetic make up in order to effectively screen for variety tolerance. The study revealed that contaminated ...
ABSTRACT Fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) was reported for the first time in Africa in 2016 from America. FAW is widely distributed in Tanzania, causing significant damage to maize. Two factor, cropping systems and biopesticides were tested in Randomized Completely Block Design arranged in a two - way factorial experiment with three replications for their efficacy against FAW and associated parasitoids on maize field at Crop Museum of Sokoine University of Agriculture ...
ABSTRACT Udaga is derivative of cassava products traditionally produced by farmers through peeling, fermentation and direct or indirect sun-drying of fermented cassava roots and widely consumed in Tanzania. The study was conducted in Lushoto, Rorya and Ukerewe districts in Tanzania based on diverse processing and storage methods between October and November 2012. Households (120) were interviewed on cassava processing and storage practices. Samples of dried cassava products were also obtained...
ABSTRACT Fruit flies (Diptera: Tephritidae) are among the most notorious pests damaging fruit crops grown in Tanzania. Demographic and life history parameters of Ceratitis cosyra (Walker) and Bactrocera invadens (Drew, Tsuruta and White) reared on artificial diet were investigated at Sokoine University of Agriculture laboratory in 2010. Demographic and life history parameters of C. cosyra and B. invadens were measured in an environmental chamber at 250C and 300C with 75% RH to determine pre-a...
ABSTRACT Onion is one of the most important vegetable in Tanzania. However, yields are generally low weeds are among the major pests which reduce onion yields. A field experiment was conducted to assess the effectiveness of weed management practices in onion (Allium cepa L.) at Sokoine University of Agriculture, Horticulture unit during the dry season of October 2013 to February 2014. The experiment was laid down in a RCBD design with three replications. Three onions varieties (Red Bombay, Re...
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 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...