Browsing by Author "Oti, N. N."

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    Application of soil quality morphological index in assessing soil health of arable farms on isophyperthermic ruptic-alfic dystrudepts in Owerri, Southeastern Nigeria
    (R. Durson Associates, 2006) Onweremadu, E. U.; Opara, C. C.; Oti, N. N.; Uozoho, B. U.; Ibe, A. E.; Tom, C. T.; Onwubiko, N. C.; Nwokeji, E. M.
    Soil quality morphological index (SQMI) was used to assess soil health of arable farms on soils along Otamiri River in Owerri, Nigeria. Sampled points were identified based on physiography and linked using a transect. Three minipedons were dug at equal inter minipedal distance of 35 metres and sampled. Results showed that soils on a levee had the best quality (SQM1 = 3. 52), followed by Terace (SQMI = 2.83), Backswamp (SQMI 2: 75) and least in Upland soils (SQMI =2.64). Soil quality has a good relationship with organic matter (r = 0.92; r2 =0.84; 1 r2— 0.16; P-0.05). Results of soil properties were used to classify soils of the site as Isohyperthermic Ruptic-Alfic Dystrudepts (USDA. Soil Taxonomy).
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    Performance of pig slurry on a degraded sandy soil and the yield of irrigated upland rice (Oryzasativa) in Owerri, South-East Nigeria
    (Discovery Scientific Society, 2021-01) Ekpe, I. I.; Oti, N. N.; Okonkwo, K. C.; Nwankwo, V. C.; Orji, A.; Okol, N. A.; Aguwa, U. O.; Ojiako, F. O.
    A field experiment was conducted from December, 2017 to April, 2018 dry seasons at the Center for Agricultural Research and Extension, Federal University of Technology, Owerri, to determine the effect of different rates of Pig slurry on a degraded sandy soil and the yield of Upland Rice (Oryza sativa). There were 6 treatments namely T1 (Control), T2 (NPK 20:10:10) at 800 kg.ha-1, T3(10t/ha of pig slurry), T4 (20t/ha of pig slurry), T5 (30t/ha of pig slurry), T6 (40t/ha of pig slurry) and replicated 3 times. Each plot measured 2 m X 2 m with a 1 m alley between plots. Pre harvest and post harvest soil samples were collected from the sites at 0-30cm depth and used for the determination of selected physical and chemical properties. Grain yield was adjusting to 12 % moisture content and weighed. The experiment was mapped out according to Randomized Complete Block Design. The data generated was subjected to analysis of variance (ANOVA) and significant means were separated using Fishers Least Significant Difference at P = 0.05.The soil properties and grain yield of rice were not significantly affected when T1 (control) was compared with T2 (NPK) treatments. While the application of different rates of Pig Slurry when compared with the control and NPK rates revealed significant effects on soil properties and grain yield of rice. Grain yield increased with increase in rates of pig slurry application. Rice grown on plots treated with 40 t.ha-1 pig slurry gave the highest grain yield as it showed 95, 90, 85, 40, and 20% higher yield when compared with rice yield from the control, NPK, 10 t.ha-1, 20 t.ha-1 and 30 t.ha-1 plots respectively. Pig slurry application rate at 40t.ha-1 has proved to be a good rate for rice production with a promise that increasing the rate beyond this level may continue to give economic yield on a degraded sandy soil.
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    Quality assessment of Amangwu-Edda stream and its tributaries for rice production under irrigation
    (Agricultural Society of Nigeria, 2020-08-30) Oti, N. N.; Mbe, J. O.
    Rice is one food that has solved the food security problems of many densely populated countries like China, India, Thailand and South Korea, etc. Inadequate and uneven distribution of rainfall and declining soil fertility are among the major challenges militating against increase in rice production in Sub-Sahara Africa. The problems associated with rainfall can be addressed through irrigation, a concept that involves the artificial application of water to the land in accordance with 'crop requirement', throughout the 'crop period', for fullf-ledged nourishment of the crop. Water sources to be used for rice production under irrigation in Amangwu-Edda, Afikpo-South Local Government Area (LGA) of Ebonyi State, South-East Nigeria were evaluated for their quality in terms of salt content. Laboratory results revealed that the water samples had mean pH value of 7.04 and Ca, Mg and Na values of 18.03mg/l, 6.07mg/l, and 1.75mg/l respectively. Similarly, mean SAR, K, SO CL, TDS, 4, -5 and EC were 0.913meq/l, 2.05mg/l, 202.5mg/l, 99.715mg/l, 1,001.4mg/l and 6.3x10 respectively. The result indicates that the water quality is safe for irrigated rice production. Similarly the mapping units studied are predominantly clay loamy, which is very ideal for irrigated rice production, but primary nutrients were generally low, and should be supplemented with organic or inorganic fertilizer.