December 2006
Farmer evaluation of improved soybean varieties being screened in five locations in Kenya: Implications for research and development
In order to determine the improved soybean varieties that if recommended to the farmers would have a high probability of adoption, a farmer participatory approach was used to evaluate 12 soybean varieties at full podding in five locations (Oyani, Riana, Kasewe, Akiites, and Mabole) in western Kenya. These comprised of 11 improved varieties (TGx1871-12E, TGx1895-4F, TGx1895-33F, TGx1895-49F, TGx1878-7E,...
December 2006
Trophic analysis and fishing simulation of the biggest Amazonian catfish
Currently, it is unanimous the fact that the ecosystem approach gives important insights to support fisheries stock assessment and management and healthy sustain aquatic ecosystems. This work aims at the quantification of energy flows at várzea (Amazon floodplain) and the simulation of increase in the fishing effort regarding the biggest predators, the catfish, and decrease of flooded forest cover. It...
December 2006
Soil-phosphorus extraction methodologies: A review
Soil available phosphorus has been measured using chemical extractants and ion-sink methods comprising of resin membranes and FeO coated filter papers or strips. This study compared the conventional chemical extractants such as Bray-1, Olsen, and Mehlich-3 etc with the ion-sink extraction methods. Investigations from researchers have shown the efficacy of the ion-sink methods especially the resin membranes...
December 2006
Assessment of Drought Tolerance in Segregating Populations in Durum Wheat
Wheat improvement for drought tolerance requires reliable assessment of drought tolerance variability among segregating populations. One hundred and fifty-one F3 and F4families of durum wheat derived from a cross between Oste-Gata (as drought tolerance) and Massara-1 (as susceptible) genotypes were evaluated both under moisture stress (E1) and non-stress (E2) field environments using a randomized...
December 2006
Impact of acid and oxgall on antibiotic susceptibility of Probiotic Lactobacilli
The present study was conducted to determine the susceptibility of 13 Lactobacillusstrains to 14 antibiotics and to evaluate the impact of some gastrointestinal stressful conditions, particularly acid and bile stress, as well as acid adaptation on their antibiogram profiles. The strains tested were 2 of Lactobacillus acidophilus, 1 Lb. delbrueckii subsp.bulgaricus, 2 Lb. casei,...
December 2006
Determination of residues of deltaméthrin in wheat and potato by HPLC
Residues of deltamethrin, a pyrethroid insecticide commonly used to protect stored grains, have been determined in wheat and potato by high -performance liquid chromatography with UV detection at 233 nm after extraction by chloroform and a silica gel clean-up. Recoveries from fortified samples spiked with 1 ppm of deltamethrin exceeded 75% for both products. The control carried out on...
December 2006
The rotifers of omi river, Ago-iwoye, Nigeria
The rotifers of Omi River, Ago-Iwoye, Nigeria were qualitatively studied. Twenty-nine species were recorded indicating a fairly rich quality relative to other Nigerian and African waters. Family Brachionidae (33.3%) was dominant out of nine families documented, while family Trichotoriidae was least represented. The bulk of the rotifers were found at the littoral and pelagic zones. This study showed that the...
December 2006
Comparison of potential pod yield and loss in old and rehabilitated cocoa plots
A field study was carried out between 1999 and 2001 to comparatively evaluate the potential pod yield and losses in old and rehabilitated cacao plots. Two plots made up of an old and a rehabilitated plots were chosen and four trees were randomly selected as experimental unit at four different locations within each of the plots to serve as the replicates. The experimental units were then laid out in a...
December 2006
Studies on character association and path analysis of certain quantitative characters among parental lines of pearl millet (Pennisetum glaucum ) and their f1 hybrids in a diallel cross
A two-year study was conducted during the cropping season of 2004 and 2005 at Maiduguri (110 53I N, 130 16I E) and at Yola (90 8I N, 120 29I E), Nigeria. The study was conducted to determine the correlation and path coefficients among the yield and yield component characters in 10 parental lines and 45 hybrids of pearl millet (Pennisetum glaucum L. R. Br),...
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