Browsing by Author "Jibrin, Mangwa I."

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    Effect of Halosulfuron Herbicide on Growth and Yield of three Varieties of Cowpea (Vigna unguiculata L. Walp) in Lafia, Nasarawa State
    (Department of Agronomy, Nasarawa State University Keffi, 2021-10-25) Mashat, I.M.; Ajayi, F.A.; Ibrahim, A.J.; Mwoltit, A.D.; Jibrin, Mangwa I.
    An experiments was conducted at the teaching and research farm of Faculty of Agriculture Shabu-Lafia campus (08°,33IN and 08°, 32!E), Nasarawa State Unversity Keffi, during the wet seasons of 2018 and 2019 to study the influence of halosulfuron herbicide on the growth and yield of three varieties of cowpea. The experiment consisted of two improved varieties (Fuampeal, Fuampea2) and one local (40days) variety and halosulfuron herbicide (applying once and zero application). The six treatment combinations with three replications were laid in a Complete Randomized Block Design. Data were collected on growth parameters such as plant height and number of branches and yield parameters such as 100 seeds weight, grain yield, total biological yield, haulms weight, and harvest index. Analysis was carried out using Genstat statistical package. The results obtained showed that cowpea Fuampea2 produced significantly (P<0.05) higher growth and yield values than cowpea Fuampeal and the local variety evaluated. The results also indicated that plots treated with halosulfuron herbicide recorded significantly (P<0.05) higher values in all the growth and yield parameters measured than the zero herbicide application in both cropping seasons respectively. This study therefore recommended Fuampea2 variety and the use of post-emergence herlosulfuron herbicide to cowpea growers in Lafia, Nasarawa State for maximum productivity.
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    Effect of Legume Inoculant and Biochar on the Growth, Nodulation and Yield of Soybean {Glycine max. L. Merrill)
    (Department of Agronomy, Nasarawa State University Keffi, 2021-10-25) Sodah, M.G.; Jayeoba, O.J.; Amana, Sani Mathew; Jibrin, Mangwa I.
    The experiments were conducted at the Teaching and Research Farm, Faculty of Agriculture, Shabu -Lafia Campus of Nasarawa State University, Keffi, during 2018 and 2019 cropping seasons to examine the effects of Legume Inoculant and Biochar on the growth, nodulation and yields of Soybean. The experiments were laid in Randomized Complete Block Design (RCBD). Biochar at the rates ofO, 4, 8 andl2 tons/ha was incorporated into the ridges before the Soybean seeds were planted as uninoculated (without legume inoculant) and inoculated (coated with legume inoculant) respectively. All data collected were subjected to analysis of variance (ANOVA) using GENSTAT Statistical Package while least significant different (LSD) was used to separate treatment means at 5% probability. The results revealed that inoculated plots recorded significantly (P<0.05) taller soybean plant, higher number of branches, nodules number per plant and grain yields (kg/ha) against uninoculated plots. The results also showed that biochar at the rate of 8 tons/ha produced significantly (P<0.05) tallest soybean plant, highest number of branches, nodules number per plant and grain yields (kglha) compared to other rates of biochar applied while the highest dose of biochar (12 tons/ha) applied did not necessarily influenced and increased Soybean growth and yield. Legume inoculant and biochar at the rate of 8 tons/ha is therefore recommended for sustainable Soybean in the study area.
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    GROWTH AND YIELD OF SOYBEAN (Glycine Max. L. Merril) AS INFLUENCED BY COMBINED APPLICATION OF BIOCHAR AND MICRONUTRIENT
    (Department of Agronomy, Nasarawa State University Keffi, 2022-03-01) Sodah, M.G.; Jayeoba, O.J.; Amana, S.M.; Jibrin, Mangwa I.
    The experiments were conducted at the Teaching and Research Farm, Faculty of Agriculture, Shabu–Lafia Campus of Nasarawa State University, Keffi, during the 2018 and 2019 cropping seasons to examine the integrated effects of biochar and micronutrient on the growth and yields of soybean. The experiments were laid in Randomized Complete Block Design (RCBD with three replications. Biochar at the rates of 0, 4, 8 and 12 tons/ha was incorporated into the ridges before planting the soybean seeds. Micronutrient at the rate of 0.0, 0.5 and 1 litre/ha was foliar applied two weeks after planting. All data collected were subjected to analysis of variance (ANOVA) using GENSTAT Statistical Package while least significant different (LSD) was used to separate treatment means at 5 % level of probability. The results revealed that biochar at the rate of 8 tons/ha, when combined with micronutrient at the rate of 0.5 litre/ha, recorded significantly (P<0.05) tallest soybean plant,the highest number of branches and nodules number per plant, heaviest weight of fresh nodules per soybean plant and grain yields (kg/ha) against other treatment combinations. The results also showed that the integration of the highest dose of biochar (12 tons/ha) with the highest dose of micronutrient (1 litre/ha) did not necessarily influence and increased soybean growth and yield parameters tested in this study. Therefore, integration of biochar at the rate of 8 tons/ha with micronutrients at the rate of 0.5 litre/ha is recommended for sustainable soybean production in the study area.
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    INFLUENCE OF PHOSPHORUS FERTILIZER ON THE YIELD AND YIELD COMPONENTS OF FOUR SOYBEAN VARIETIES AT LAFIA, SOUTHERN GUINEA SAVANNA OF NIGERIA
    (Department of Agronomy, Nasarawa State University Keffi, 2021-02-02) Jibrin, Mangwa I.; Haruna, I.M.; Ogara, I.M.; Sodah, M.G.
    Field trials were conducted during 2018 and 2019 cropping seasons at the Teaching and Research Farm of the Faculty of Agriculture, Nasarawa State University Keffi, Shabu-Lafia Campus to study the yield performance of soybean varieties under different phosphorus (P) fertilizer levels. The study area fell within the southern Guinea savanna zone of Nigeria, located on latitude 60 150 and 90 300 N and Longitude 60 300 and 110 00E. The treatments consisted of the four P fertilizer levels (0, 13, 26 and 39 kg P2O5 ha-1) and four varieties of soybean (TGX 1448-2E, TGX1987-62F, TGX 1989-19F and TGX 1835-10E). The treatment combinations were laid out in a randomized complete block design (RCBD) and replicated three times. The yield and yield components were significantly (P<0.05) affected by the treatments and each increase in P application resulted in increased number of pods plant-1, number of seeds pod-1, seed yield plant-1, 100 seed weight and seed yield hectare-1 in both cropping seasons. The results also showed that application of 39 kg P2O5 ha-1 produced significantly (P<0.05) highest in all the yield parameters measured while control plots produced lowest in both cropping seasons respectively. The results further revealed that the varietal effect of soybean on all the yield and yield components were significant (P<0.05) with TGX 1987-19F variety produced consistently highest number of pods plant-1, number of seeds pod-1, 100 seed weight and seed yield hectare-1 while TGX 1835-10E variety produced the lowest yield. In view of the results, this study, therefore recommended that soybean farmers in Lafia and its environs should apply P fertilizer at 39 kg P2O5 ha-1 and adopt TGX 1989-19F variety for profitable soybean production.
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    SEED YIELD AND ECONOMIC RETURNS OF SOYBEAN (Glycine max. L. Merill) AS INFLUENCED BY PHOSPHORUS FERTILIZER RATES AND VARIETIES AT LAFIA, NASARAWA STATE
    (Department of Agronomy, Nasarawa State University Keffi, 2021-01-10) Jibrin, Mangwa I.; Haruna, I.M.; Ogara, I.M.; Ibrahim, A.J.; Adamu, M.B.
    Field trials were conducted during the wet seasons of 2018 and 2019 at the Research Farm of Faculty of Agriculture Shabu, Lafia Campus, Nasarawa State University, Keffi, Nigeria (08.33°N and 08.33°E) to study the yield and economic returns of soybean as influenced by phosphorus fertilizer rates and variety. The experiment consisted of four levels of phosphorus in the form of single super phosphate (0, 13, 26 and 39 kg P ha-1) and six varieties of soybean (TGX 1985-10F, TGX 1987-10F, TGX 1448-2E, TGX 1987-62F, TGX 1989-19F and TGX 1835-10E). The twenty four treatment combinations were laid out in a Randomized Complete Block Design (RCBD) with three replications to form seventy two (72) plots. The results of this study showed that each increase in the rate of applied phosphorus significantly (P<0.05) increased seed yield per hectare of soybean in both years. The results also indicated that the application of 39 kg P ha-1 produced significantly (P<0.05) the highest seed yield (kg ha-1) and gross margin of N 147,850 compared to other rates of applied phosphorus. The results further revealed that TGX 1989-19F variety produced significantly (P<0.05) the highest seed yield (kg ha'1) and higher economic returns of soybean compared to other varieties evaluated. In view of the results, this study therefore recommended phosphorus fertilizer at 39 kg ha'1 and TGX 1989-19F variety for higher yield and better economic returns to soybean farmers at Lafia, Nasarawa State.