http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/229 Soil Science 2026-03-18T17:33:59Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29999 Title: The impact of lime and phosphorus fertilizer applications on the growth of soybean (Glycine max). Authors: Uzoma, A.O.; Ameh, S.J; Osunde, A.O Abstract: A Pot experiment was carried out in year 2004 on "Acid-Sands" of Awka, Kugbo from the Derived Savanna and Akufo soil from the Southern Guinea Savanna Agro-ecological Zones of Nigeria to evaluate the impact of lime and P fertilizer application on the growth of soybean (Glycine max). It consisted of four lime treatments (0,2,4, and 6 ton ha -1 on three soils combined with three levels (0,30,and 60kg P2 05ha -1 applied as SSP. The experiment was laid out in split plot design. There was significant response in the performance of soybean in the limed and P- fertilized treatment compared to the unlimed and unfertilized treatments. Akufo and Kugbo soils performed significantly higher at 4 ton ha -1 of lime combined with 60kg P205 ha -1 while Awka plants were best at 2 ton ha -1 in combination with 60kg P205 ha -1. Generally, results reflected appreciable depression in performance when the plants were treated above the optimal lime requirement which resulted in unfavorable soil condition and drastic reduction in plant growth. 2011-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29995 Title: Influence of phosphorus sources on soybean growth and nodulation in typic plinthustalfs of southern Guinea savanna, Nigeria. Authors: Ezekiel-Adewoyin, D.T; Uzoma, A.O; Tanko, F; Makinde, A.I; Haruna, I; Bolarinwa, A.B; Osunde, A.O Abstract: Phosphorus is one of the most limiting plant nutrient in tropical soils. A pot trial was conducted using soils from three locations (Maikunkele, Maitunbi and Gidan Kwanu) of Bosso local government area in Minna, Niger State, Nigeria. The trial was set up in the screen house of the School of Agriculture and Agricultural Technology, Soil Science and Land Management, Federal University of Technology, Minna, in the Southern Guinea Savanna of Nigeria. The treatments include three phosphorus sources; inorganic phosphorus as single superphosphate (SSP), organic phosphorus as bone meal (BM) and bio–phosphorus as “Glomus intaradices” (Arbuscular Mycorrhizal Fungi) and a control, laid out in a Completely Randomized Design (CRD), replicated three times. The observed parameters includes plant height, number of branches, number of leaves, number of nodule, nodule and root dry weights. Analysis of variance was done using Genstat statistical package. Significant means were further separated using Least Significant Difference (LSD) at P < 0.05, soybean (TGX 1988-5F) was the test crop. The results shows that soybean responded to the treatments positively. The observed parameters (plant height, number of branches, number of leaves, number of nodule, nodule and root dry weights) were all enhanced as a result of the various sources of phosphorus applied as compared to the control. The application of inorganic–P (SSP), organic-P and bio–P (AMF) were significant at the three locations for leaf area, shoot weight (except at Gidan Kwanu where only the inorganic-P (SSP) was significant for shoot weight). The nodule number was also significant at Maikunkele and Maitunbi with the use of inorganic-P (SSP) and bio-P (AMF), while the nodule and root dry weight recorded substantial increase in weight to the application of the P-sources as compared to the control. Hence, the application of the various sources of phosphorus is worthwhile for soybean growth and grain yield improvement on Typic Plinthustalfs soil in the study area. 2023-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29918 Title: Effect of soil proximity to homestead, nitrogen source on nodulation and nodule activity of some cowpea (Vigna unguiculata (L.) Walp) varieties Authors: Tanko, F; Ezekiel-Adewoyin, D.T; Uzoma, A.O; Daniya, E; Bala, A Abstract: Integration of Bradyrhizobial inoculation with improved cowpea varieties is one viable option to enhance cowpea nodulation and nitrogen fixation, resulting in sustainable cowpea production. This study was conducted in a screen house to determine the effects of soil proximity to the homestead, nitrogen source on nodulation, and nodule activity of some cowpea varieties. This study involved the factorial combination of soil proximity to homestead: close and far; nitrogen source: control (no nitrogen application), application of urea (100 kg N ha-1), inoculation with Bradyrhizobium strain BR 3262, Bradyrhizobium strain BR 3267, and cowpea varieties: Kanannado, IT93K-452-1, IT97K-499-35, and IT90K-277-2, arranged in a completely randomized design and replicated three times. Results revealed that the Most Probable Number (MPN) count of the cultivated soils to cowpea varieties ranged from (9.26 - 12.27 x 106). Results show that the field's proximity to the homestead did not significantly (P > 0.05) differ from that away from the homestead. Inoculation with BR 3262 significantly (P < 0.05) improved nodule number and dry weight by 62% and 66%. Kanannado significantly increased nodulation compared to the improved varieties. Inoculation with BR 3267 had more nodules than un-inoculated control and N treatment. The result indicates that using Bradyrhizobium strain BR 3262 or BR 3267 and Kanannado variety could improve cowpea nodulation. Further study should, however, be carried out under field conditions to affirm this study. 2024-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/29917 Title: Effect of agricultural lime, organic and inorganic fertilizer on arbuscular mycorrhizal fungi population and diversity in maize rhizosphere soil in Niger state Authors: Ezekiel-Adewoyin, D.T; Tanko, F; Tella, M; Uzoma, A.O; Ederigbe, R; Tsado, P.A Abstract: ABSTRACT Knowledge of various soil amendments influencing soil microbial community is a vital soil health indicator. A field trial was conducted at Gidan Mangoro, Minna, Niger State, using five farmers’ fields to evaluate the effect of agricultural lime, organic manure (cow dung), and inorganic fertilizers (N P K 20: 10: 10, urea and SSP) on Arbuscular Mycorrhizal Fungi (AMF) population and diversity on soil cultivated to maize. Soil samples were collected before and after maize cultivation at a 0-20 cm depth using a random technique using an auger. The experimental design used was a Randomized Complete Block Design with five replicates. The Minitab package (2017) was used for statistical analysis, and mean separation was done according to the Bonferroni method at a 95 % significance level. The results revealed significant differences in arbuscular mycorrhizal spore count and diversity in response to the various soil amendments used. The application of cow dung+Inorganic fertilizer recorded a significant (P<0.05) spore count of 779 spores / 50 g dwt in soil cultivated to maize compared to the control, which recorded 416 spore / 50 g dwt. Acaulospora and Funneliformis species of AMF were mostly observed. However, Glomus, Gigaspora, and Rhizophagus were also present in the soil of the study area. The effects of fertilizers, especially integrated soil fertility management, on Arbuscular Mycorrhizal fungal sporulation and species diversity varies, hence the need for further precise study. 2024-01-01T00:00:00Z