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Search Results: 1 - 10 of 461893 matches for " A Kutama "
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State of sorghum downy mildew in maize in the Sudan and sahel savanna agro-ecological zones of Nigeria
A Kutama, B Aliyu, A Emechebe
Bayero Journal of Pure and Applied Sciences , 2010,
Abstract: The incidence, distribution and prevalence of downy mildew in maize were investigated during the 2008 growing season following a planned–two time survey across the Sudan and the Sahel savanna agro-ecological zones of Nigeria. The occurrence of the disease was investigated in 102 and 120 farmers’ fields in 34 and 40 locations in the first and second surveys respectively. Average incidence (%) of the disease was obtained from a sample of 100 plants each from three farms per stop; each farm representing a replicate. Simple random sampling technique was employed in the selection of plants. Results of the survey have revealed that 20 out of the 34 locations visited during the first survey had maize with early symptoms of the disease while only 4 out of the 40 locations visited in the second survey was having the symptoms of the disease. The incidence of the disease was 8.20% and 1.12%, in the first and second survey respectively and therefore significantly different (p>0.05) indicating that the disease was more prevalent at seedling than at grain filling stage which is an indication of the absence of certified, sorghum downy mildew (SDM) free seeds in most of the regions surveyed. The incidence was also higher in the Sudan than in the Sahel savanna (16.28% and 3.28% first and second visits respectively). This might be probably because of differences in climate of the two zones and the fact that maize was grown more in the Sudan than in the Sahel savanna zone. Although the incidence was generally low, proper measures should be taken to avoid unexpected epidemic of the disease in the future.
Assessing the potentials of growing Samcot 9 Cotton variety in Kano state, Nigeria
B.S Aliyu, A.S Kutama
Science World Journal , 2007,
Abstract: A Completely randomized field experiment with nine replications was conducted in the North, South and Central Agricultural zones of Kano State during the 2004 cotton growing season with a control in Katsina state, a cotton producing area, with the object of assessing the potentials of the profitable production of the SAMCOT 9 cotton variety in Kano State. A number of growth and yield parameters, which included plant height, stem circumference and seed cotton yield, were measured during the study. The trial involved a systematic composite soil sampling and analysis which indicated that the soils of the four regions were generally acidic and sandyloam with low nitrogen and carbon contents. The mean available K+ was 0.22me/100g with the lowest recorded from Katsina State. Generally, there were low concentrations of phosphorus in all the zones with the lowest recorded in Katsina State (15.20ppm). The height of the Plants from the four sites showed a significant (p<0.001) linear increase throughout the active growing period with the highest height was obtained in site B (Kano south) and the lowest from site D (Katsina State). The difference in the height of the plants between the 4 study sites was significant (p<0.001). There was a consistent increase in the stem circumference up to wk 12 after germination which was significantly different (p<0.001) between the four sites: the highest value was obtained in site C (Kano State) and the lowest in site D (Katsina State). The total yield showed site C producing the highest seed cotton of 800.20kg/ha. The yield of seed cotton throughout the study areas was consistently low probably because the rainy season ended early in September, 2004. Higher yield could be expected if rainfall and other ecological factors are favorable. This indicated that Kano State has the potential for the production of Samcot 9 cotton variety.
Fungal pathogens associated with tomato wicker storage baskets
A.S Kutama, B.S Aliyu, I Mohammed
Science World Journal , 2007,
Abstract: No
Isolation and identification of fungal flora associated with groundnut in different storage facilities.
B.S Aliyu, A.S Kutama
Science World Journal , 2007,
Abstract: Stored and unshelled groundnut samples were obtained from different storage facilities, namely Rumbu, Market silos and Warehouse with the aim of isolating and identifying fungi associated with stored groundnut in different storage facility. Samples were grounded and cultured on SDA plates for 5 days and fungal floras microscopically identified. A total of 25 colonies were isolated from all the samples from which 6 fungal species were identified, namely Mucor, Aspergillus, Rhizophus, Curvularia, Pencillium and Fusarium spp. Of these, Mucor and Rhizopus were most prevalent having been isolated from the three storage facilities studied. Curvularia and Penicillium were both found in the warehouse and market silo while Fusarium was encountered only from the market silos. It is concluded that the market silos were more susceptible to fungal contamination than the Rumbu because of the high moisture content of the sample.
A survey of sorghum downy mildew in sorghum in the Sudano-Sahelian Savanna zones of Nigeria
AS Kutama, BS Aliyu, AM Emechebe
Bayero Journal of Pure and Applied Sciences , 2009,
Abstract: An extensive survey was conducted across the 13 states constituting the Sudan and Sahel savanna agro-ecological zones of Nigeria to determine the occurrence and distribution of sorghum downy mildew in sorghum during the 2008 growing season. The survey was conducted at two different stages of the crop development; seedling and dough stage. The first survey was in early July while the second was carried out in late September. Three farmers’ fields were critically investigated at every stop on a road system. During the first survey, a total of 97 farmers’ fields in 36 locations were investigated while 110 sorghum fields in 37 locations were visited in the second survey. Average incidence (%) of the disease was obtained from a sample of 100 plants selected using simple random sampling technique from each of the three farms visited per stop. Results of the survey (16.20 and 9.64% and 3.28 and 1.16% during the first and second visits in the Sudan and Sahel savanna AEZs respectively) indicated that the disease was present only at the seedling stage and virtually absent at flowering stage .In the areas where it was noticed at the juvenile stage the incidence was more prevalent in the Sudan than in the sahel savanna regions. The results also revealed that there was a relationship between soil type (which was mostly sandy loam) and disease incidence. Disease incidence was relatively higher on sandy loam soil than other soil types. The prevalence was generally low, but efforts should be made towards controlling the spread of the disease further. Farmers should be advised to use improved cultural practices like early sowing, seed dressing with the sole aim of reducing the disease.
Seed-borne mycoflora of local and improved wheat (Triticum sativum L.) cultivars in Kano, Nigeria
M Bashir, MA Mani, AS Kutama
Bayero Journal of Pure and Applied Sciences , 2012,
Abstract: Three varieties each of local and improved wheat (Triticum sativum) cultivars were investigated for seed-borne pathogenic mycoflora using the plate technique and laid on completely randomized design. A total 99 fungal isolate grouped into five fungal species namely; Rhizopus nigricans, Mucor spp, Penillium jenseni, Aspergillus niger, and Fusarium moloniformes were isolated with Rhizopus nigricans, and Fusarium moloniformes (30.30 % and 35.40%, respectively) being the most frequently occurring fungal species and Penillium jenseni (7.0 %) being the least abundant. Results of the studyhave also indicated that local wheat cultivars were more contaminated than the improved varieties. It is therefore apparent that both improved and local wheat varieties are contaminated by fungal mycoflora.
Screening of Sorghum Genotypes fFor Resistance to Loose Smut in Nigeri
AS Kutama, BS Aliyu, AM Emechebe
Bayero Journal of Pure and Applied Sciences , 2011,
Abstract: One hundred and four sorghum genotypes were screened under field conditions for loose smut disease using the hypodermic stem injection artificial inoculation technique. The experiment was laid out on a randomized complete block design (RCBD) with two replications. The results of the trial indicated that only twenty nine genotypes (27.9 %) showed loose smut symptom at varying degrees of incidence and with varying severity. Both disease incidence and severity were significantly different (P<0.01) among sorghum genotypes. More than 70 % (73 genotypes) were found to be immune (I) and 5.76 % (six) genotypes were highly resistant (HR) which included, SSV2008030, SSV2008031, SSV2008034, SSV2008066, SSV20080075, and SSV2008088 and nineteen (18.27%) were very susceptible (VS) genotypes. There was no moderately susceptible genotype obtained from the experiment. The results have shown that there are some promising sorghum genotypes that are resistant to the disease and could therefore be introduced to farmers and sorghum breeders for further breeding as well as multi-locational trials.
In-Vitro Studies on the Sensitivity of Staphylococcus aureus to Some Ethno-Medicinal Preparations Sold around Kano, Nigeria
M Bashir, I Yusuf, AS Kutama
Bayero Journal of Pure and Applied Sciences , 2011,
Abstract: Five traditional herbal preparations were sampled between May-June, 2009 in Kano. The samples were investigated for invitro antibacterial activities against clinical isolates of Staphylococcus aureus. Likewise, phytochemical screening tests were conducted to determine some of the phytochemicals present in the ethanolic and water extracts of the samples. Various concentrations of the extracts were prepared using serial doubling dilutions (5000=l/ml, 2500=g/ml, 1250=g/ml, 625=g/ml and 312.5=g/ml). All the test extracts showed slight antibacterial activity against the test organism, with ethanolic extract of sample E having the highest zone diameter of inhibition, while sample H had the lowest diameter of inhibition. The standard antibiotic disc (Gentamicin) had demonstrated the highest activity on the test organisms. The results of the Phytochemical screening revealed the presence of steroid in all the samples, tannin in samples A, C, D and E, reducing sugars in sample A, D and E respectively. The result of the minimum inhibitory concentration (MIC) was found to be above 312.5=g/ml for samples C, D and E.
Occurrence of wood-and root- rot basidiomycetes on trees in Bayero University, Kano, Nigeria
AS Kutama, AO Saratu, AU Asma’u
Bayero Journal of Pure and Applied Sciences , 2012,
Abstract: Several death and decays or rots of tropical trees are as result of infection caused by wood and root rot ‘parasitic basidiomycetes. In the present study, survey of parasitic homobasidiomycetes causing wood and root rot on woody trees in Bayero University, Kano (two campuses) was carried out between April – September, 2011. The survey was conducted in two phases, to determine the occurrence of wood and root-rot parasitic fungi on the trees and the level/extent of damage done by the parasites. Results on the distribution and relative abundances of these wood and root-rot causing parasitic basidiomycetes have indicated the presence of two predominant species: Ganoderma phillipii and Phellinus noxious on the trees found on the two campuses with Ganoderma phillipii being the most occurring (40 and 15 isolates from old and new campus, respectively) while Phellinus noxious was the least (31 and 17 isolates from old and new campus, respectively). These parasitic basidiomyecetes were found affecting and causing damages on Azadirachta indica (neem tree) and Parkia biglobosa (parkia) trees. A total of 22 trees (seven and 15 in the old and new campus, respectively) were found dead due to serious infection by the parasites. This situation if left unchecked may grow and become a more serious threat to the trees on the two campuses. Effort should be made to eliminate these fungi before they kill more of the trees on the two campuses considering the importance of trees to mankind.
The Spread of Infectious Disease on Network Using Neutrosophic Algebraic Structure  [PDF]
A. Zubairu, A. A. Ibrahim
Open Journal of Discrete Mathematics (OJDM) , 2017, DOI: 10.4236/ojdm.2017.72009
Abstract: Network theory and its associated techniques has tremendous impact in various discipline and research, from computer, engineering, architecture, humanities, social science to system biology. However in recent years epidemiology can be said to utilizes these potentials of network theory more than any other discipline. Graph which has been considered as the processor in network theory has a close relationship with epidemiology that dated as far back as early 1900 [1]. This is because the earliest models of infectious disease transfer were in a form of compartment which defines a graph even though adequate knowledge of mathematical computation and mechanistic behavior is scarce. This paper introduces a new type of disease propagation on network utilizing the potentials of neutrosophic algebraic group structures and graph theory.
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