College of Plant Science & Crop Production
Permanent URI for this collectionhttps://ir.funaab.edu.ng/handle/123456789/257
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Item CARBON SEQUESTRATION POTENTIAL OF SOME SOFT LANDSCAPE ELEMENTS AS INFLUENCED BY TRIMMING OR MOWING(2023-02-20) OWOLABI Christiana OlusolaItem EVALUATION OF YIELD POTENTIAL OF SELECTED LOWLAND RICE (Oryza sativa L.) GENOTYPES FOR DROUGHT TOLERANCE(2023-07-15) AZEEZ, OLUWAKEMI SADIATItem GENETIC DIVERSITY AND INTER-CHARACTER ASSOCIATION AMONG AGRO-MORPHOLOGICAL TRAITS lN OKRA (Abelmoschus esculentus L.) GENOTYPES(2023-07-25) OLOYE, IBIWUNMIOLATUNJIItem INCIDENCE AND PATHOGENICITY OF FUNGI ASSOCIATED WITH KENAF (Hibiscus cannabinus L.) DISEASES AND THEIR CONTROL WITH SAWDUST EXTRACTS OF SOME TROPICAL PLANTS(2023-08-20) ODUWAYE Olubusola FehintolaItem EFFECTS OF UREA ON NITROGEN USE EFFICIENCY AND PERFORMANCE OF LOWLAND RICE VARIETIES IN AN INLAND VALLEY OF A DERIVED SAVANNA(2023-08-20) BALOGUN, OLAYEMI ADEBUKOLAItem IMPACT OF TILLAGE AND FERTILIZER REGIME ON SOIL NITRFYING BACTERIA AND ARBUSCULAR MYCORRHIZAL FUNGI ACTIVITIES UNDER CASSAVA (Manihot esculenta L.) CULTIVATION(2023-09-30) THANNI, Bolaji MargaretABSTRACT Farmers in south-west Nigeria are willing to adopt practices such as tillage and fertilizer to increase cassava root yield. Meanwhile, the adoption of these agronomic practices has implications for microorganisms that are related to both soil and cassava nutrition. A study was therefore carried out to determine the effect of tillage and fertilizer application on arbuscular mycorrhizal fungi (AMF) and nitrifying bacteria populations in cassava cultivation. Additionally, the uptake of nitrogen (N), phosphorus (P) and potassium (K) in cassava and their concentration in the soil were monitored. The study was carried out in 2016 and 2017 on two farmers' fields each at Ido, and Odeda Local Government Areas in Oyo and Ogun state respectively. The experiment comprised two levels of plough till {single plough (SP) and zero plough (ZP)}, two levels of traditional ploughing {ridge (R) and flat (FL)} and fertilizer application {fertilized (F) and unfertilized (F1)} arranged in a split-split plot fitted in a Randomized Complete Block Design with three replicates. Cassava variety TME 419 was planted at 1 m × 0.8 m spacing. Spores population and AMF species associated with cassava were isolated and identified. Per cent root colonization (RC) was determined by the grid-plate method while Nitrosomonas and Nitrobacter were cultured on Winograsky selective media and colonies counted were expressed in colony-forming unit (CFU). N, P, and K uptake and root yield were determined at harvest. Data collected were subjected to Analyses of Variance using R statistics software version 3.6.2 for Windows and treatments means were separated using the Least Significant Difference at p < 0.05. Results showed a high spore population at 48 Weeks After Planting (WAP) in both locations for both years and no fertilizer application relatively led to a 12.7% increment in spore population in bot sites. A total of five AMF genera (Glomus, Acaulospora, Enthrospora, Gigaspora, and vii Scutellospora) were isolated from the soil while Glomus spp. predominated. Ploughing increased RC at Ido (26%) and Odeda (9%). Nitrosomonas spp. increased on single-ploughed flat and unfertilized plots. While there was inconsistency in the response of Nitrobacter spp to tillage and fertilizer application across locations in both years. At Ido, single ploughing led to 25%, and 13.4% increments in root yield in 2017 and 2018 respectively. While fertilizer application also increased yield by 13% in 2017 and a subsequent 13.4% in the preceding year. Similarly at Odeda, root yield increased on plots that were single ploughed and fertilized in both years. Plants with higher root yield had an increase in NPK accumulation and NPK concentrations increased under ZP. The study concluded that a combination of ploughing, ridging, and fertilizer application is favourable to high root yield in cassava and beneficial soil organisms such as AMF and some nitrifying bacteria.Item EFFECTS OF SIMPLE ENGINEERING APPROACHES AND POULTRY MANURE APPLICATION ON SOIL EROSION CONTROL AND MAIZE (Zea mays L.) YIELD IN A DERIVED SAVANNA SLOPY LAND(2024-01-23) AKANNI, SODIQ DIMEJIABSTRACT Soil erosion is a form of soil degradation which involves process caused by the dynamic activity of erosive agents and anthropogenic activities affecting agricultural lands. This study estimated the effects of simple engineering approaches and poultry manure (PM) application on soil erosion control and its economic implication on maize yield in a derived savanna slopy land. The experiment was conducted during the early 2019 and late 2020 planting seasons at the Federal University of Agriculture, Abeokuta. The experiment was a 4 × 2 factorial arrangement with three replications, fitted into a Randomized Completely Block Design. Maize was planted using four simple engineering approaches (Surface mat, Silt fencing, Furrow dike and Control) as erosion control measures. Two levels of PM (0 t ha-1 and 20 t ha-1) were incorporated into the soil. Soil pins were erected and erosion plots were laid to quantify eroded soil from each plot. The annual soil loss was estimated using the Revised Universal Soil Loss Equation. Data collected were subjected to Analysis of Variance using GENSTAT 12TH edition. The results showed that the lowest soil losses of 1.30 t ha-1 yr-1 and 1.0 t ha-1 yr-1 were obtained from plots under surface mat in 2019 and 2020, respectively compared with other engineering approaches. The bulk density of soil was not significantly affected by engineering approaches. Plots under surface mats, however, had the lowest bulk density (1.12 g cm-3) in 2019. Highest saturated hydraulic conductivity (11.49 cm hr-1) in 2019 and (10.71 cm hr-1) in 2020 were recorded on plots treated with 20 t ha-1 poultry manure (PM20) which was significantly (p ≤ 0.05) higher than the control, suggesting an improve soil structure. Application of PM20 resulted in a slightly acidic (soil pH 6.31) and increased the soil total nitrogen (N), available phosphorus (P) and potassium (K) compared with the unmanured plots. Significant differences were not observed as a result of simple engineering approaches effects on soil chemical properties with the exception of silt fencing which increased N, P and K compared with the control. Grain yield (1,598.5 kg ha-1) were significantly higher (p ≤ 0.05) in 2019 and 2020 (2,116.4 kg ha-1) on plots with surface mat combined with PM20 respectively. Surface mat was more effective in reducing soil loss compared with other simple engineering approaches. Soil physical and chemical properties were improved by the application of PM. Growth and yield of maize were improved on plots with silt fencing but resulted in a negative economic benefit while practice of surface mat was economically viable with PM application. Economically, surface mat produced the highest profit gain which was 149% greater than the control. Therefore, the use of surface mat in combination with poultry manure should be used to reduce soil loss, enhance the soil physical and chemical properties and also increase maize yield.Item EFFECTS OF SEED EXTRACTION AND DRYING TECHNIQUES ON SEED QUALITY COMPONENTS AND LONGEVITY OF STORED SEEDS OF GARDEN EGG (Solanum aethiopicum) GENOTYPES(2024-08-25) AKINTUNDE, ADEJUMOKE MARIA
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