Research Papers/Topics in Crop Science

PATHOGENICITY OF Meloidogyne incognita AND Fusarium oxysporum f. sp. lycopersici ON GROWTH, YIELD AND WILT SEVERITY IN TWO VARIETIES OF TOMATO (Solanum lycopersicum L.) IN GHANA

ABSTRACT The pathogenicity of fungus, Fusarium oxysporum f. sp. lycopersici and nematode, Meloidogyne incognita on growth, yield and wilt severity was studied on two tomato varieties, Mongal F1 and Petomech in a randomized complete block design, factorial experiment with three replications on the University of Ghana and National service farms from July 2018 to June 2019. Each plot had an area of 10 m2 with 25 plants. Fusarium inoculum of 1.3×106 cells per 5 mL was inoculated on fie...

Seasonal Abundance Of Amaranth Lepidopteran Defoliators And The Role Of Indigenous Parasitoids And Phenylacetaldehyde In Their Control In Nairobi County, Kenya

ABSTRACT Amaranth is one of the African indigenous vegetables that is gaining popularity due to its nutritional, medicinal and economic values. Its potential as a source of food security in East Africa and most parts of the world has heightened demands for the once neglected crop. In Kenya and Tanzania, the Lepidopteran defoliators are important pests of the crop which can cause up to 100% yield loss. Little information on the population dynamics of these pests make their management di...

Developing Maize (Zea Mays L.) For Fresh Maize Production In Southeastern Nigeria

ABSTRACT Green (fresh) maize (Zea mays L.) provides food security and income to farmers especially when other crops are still in the field. However, research on green maize variety is scarcely reported in literature or information on suitable genetic material (germplasm) for green maize production. Developing maize for fresh maize production in the southeastern Nigeria was carried out in the Center for Agricultural Research, School of Agriculture and Agricultural Technology, Federal Uni...

Inheritance Of Resistance To Striga Hermonthica (Del.) Benth. In An Open Pollinated Maize Population, Tzl Composite-1 Cl.

ABSTRACT The parasitic weed Striga hermonthica (Del.) Benth. of the Scrophulariaceae family constitutes one of the most economically important biological constraints in maize production in the sub-Saharan regions of Africa. The type of gene action involved in the inheritance of resistance to Striga hermonthica was investigated using the open-pollinated population, TZLComposite-1 Cl in a North Carolina design 1 scheme. Recombination were done among the best families and also the poorest...

To Evaluate The Lethal Effect Of Hexane Extracts Of The Leaves Of Rehan (Ocimum Basilicum) And Lupine Seeds (Lupinus Termis) Against The 3rd Larval Instars Of Spiny Bollworm (Earias Insulana

AbstractThis study was carried out in the laboratory of Entomology, Plant Protection Department , College of Agricultural Studies , Sudan University of Science and Technology (SUST) to evaluate the lethal effect of hexane extracts of the leaves of Rehan (Ocimum basilicum) and Lupine seeds (Lupinus termis) against the 3rd larval instars of spiny bollworm (Earias insulana Boisduval, 1833). Also further experiments were conducted to investigate the efficacy of sesame oil as a synergist. Four con...

Planting Time, Spray Regime, Disease Expression And Their Impacts On Six Cucumber Lines In A Derived Savanna Agroecology Of Nsukka, Southeastern Nigeria.

Cucumber (Cucumis sativus L.) belongs to the Cucurbitaceae family. It is a major vegetable crop worldwide and develops rapidly, with a shorter time from planting to harvest than most crops. It is a monoecious annual climber or creeper that has been cultivated for over 3,000 years and is still widely cultivated today. The fruit is soft, succulent with high water content, roughly cylindrical and elongated with tapered ends. The plant shades one another, being allowed to creep on the groun...

Partial Nutrient Balance In Cassava (Manihot Esculenta Crantz) And Soybean (Glycine Max (L) Merril) Intercrop For Sustainable Agriculture In A Derived Savannah Location

ABSTRACTThree field experiments to investigate the partial nutrient balance (N and K) incassava/soybean intercrop system were conducted at University of Nigeria, Nsukka in aderived Savannah location of South Eastern Nigeria. Effect of fertilizer rate, residual fertilizerand soybean residue management on growth and yield of soybean and cassava and soil nutrientreserve were studied. Soybean growth and yield were significantly affected by their varieties,fertilizer rate and cropping sys...

Evaluation Of Cassava Cultivars And Intercropping With Legumes As An Integrated Nematode Pest Control Strategy In Cassava (Manihot Esculenta Crantz) Production

ABSTRACTThese studies on evaluation of cassava cultivars and intercropping with legumes as anintegrated nematode control strategy in cassava production were carried out as15greenhouse/microplot and field experiments. Of the 200 cultivars screened for resistanceto Meloidogyne spp., only 76 survived and from this lot only 3 lines 77/227, TMS30572and 73/222, showed any resistance while 7 others namely NR8082, 75.668, 73/238(Egbenegbe), 73/295, 73/118, 75740(Panya), 82/00661 and 73295B were ...

Evaluation Of 31 Rice (Oryza Sativa L.) Breeding Lines And Genetic Analysis Of Eight Selected Lines Using Diallel Methods

ABSTRACT A diallel set consisting of p 2 combinations (p parents ½ P(p-1) F2 hybrids, and the backcrosses among eight rice breeding lines were grown in replicated trails. The eight rice breeding lines were selected from an initial thirty one rice breeding lines comprising eighteen medium maturing rice lines and thirteen early maturing rice lines on the basis of their maturity (early to medium ), plant height (semi – dwarf to intermediate ), tillerring ability (low to high) and spi...

Fluvial Facies, Vertebrate Taphonomy And Palaeosols Of The Teekloof Formation (Permian) Near Beaufort West, Cape Province, South Africa

ABSTRACTThe main Karoo Basin of South Africa contains a relatively continuous sequenceof continental deposits that accumulated over a 100 million year period fromPermo-Carboniferous (280 Ma) to early Jurassic (180 Ma). In the southwesternregion of the basin the Karoo succession is approximately 4 000 m thick, theupper half of which consists of vertebrate fossil-bearing fluvial rocks of theBeaufort Group.This study deals with Lower Beaufort (Adelaide Subgroup) strata belonging tothe Teek...

Optimising techniques for improving post-harvest quality of orange (citrus sinensis (l.) Osbeck) and mango (mangifera indica, l.) Fruits in eastern zone of tanzania

EXTENDED ABSTRACT The preliminary experiment was done by using Jaffa orange variety to assess the effects of different concentrations of hexanal, calcium chloride and smoke treatment on physicochemical quality. Jaffa orange fruits were separately (i) dipped in hexanal at 0.01%, 0.02% and 0.04% volume/voume for five minutes (ii) dipped in calcium chloride 1%, 2% and 4% weight/volume for five minutes (iii) fruits were smoked by burning 0.5 kg, 1.0 kg and 1.5 kg of dry banana leaves (iv...

Developing Maize (Zea Mays) Populations Resistant To Stem Borers For Southeastern Nigeria.

ABSTRACTDevelopment of maize populations resistant to stem borers depends largely on theexistence of useful genes or alleles, which can combine to confer resistance to progenies.Such genes are often available in areas of stress, having been responsible for the survivalof such crops over the years. Pink stem borer, Sesamia calamistis (Hampson, Noctuidae)and sugarcane borer, Eldana saccharina (Walker, Pyralidae) are endemic in southeasternNigeria. Damages caused by the larvae of these m...

Mechanism Of Inheritance Of Resistance To Pythium Root Rot Disease And Traits For Tolerance To Low Soil Fertility In Common Bean

EXTENDED ABSTRACT The bean root rot disease mainly Pythium spp. is a major problem affecting bean production especially in the major bean producing areas of the Great lakes region including southwestern Uganda, Rwanda, western Kenya, northern and the southern highlands of Tanzania. The problem of Pythium bean root rot appears to be made worse by declining soil fertility, resulting from intensive land cultivation by the small holder farmers. Probably for a more sustainable farming sy...

Quality And Genetic Evaluation Of Some Genotypes Of Rice (Oryza Sativa L.) Using Diallel Method.

ABSTRACT The patterns of gene effects on agronomic and some quality traits of eight genotypes of rice (Oryza sativa L.) and their progenies were studied using Diallel analysis method 1 involving parents, F1 hybrids and their reciprocals. The eight genotypes studied were selected for their agronomic performance and protein content from thirty genotypes evaluated in a randomized complete block design and replicated three times at the Teaching and Research Farm of the Federal University of...

Pedological Characterization, Classification And Evaluation Of The Potential For Maize Production Of Solomon Mahlangu Campus Farm Morogoro, Tanzania

EXTENDED ABSTRACT In Tanzania, limited attention has been channeled towards the assessment of the fertility status of the soils in areas perceived as suitable for agricultural activities, mainly crop production. In the absence of reliable soil fertility data and information, agricultural land use, and in particular crop production has resulted in very low yields of most of the crops, with subsequent land degradation. The Solomon Mahlangu Campus (SMC) farm – Sokoine University of A...


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