Browsing by Author "Affinnih, K.O"

Now showing 1 - 4 of 4
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    Effect of Wildfire on Weed Floristic Composition and Soil Status in a Teak (Tectonia grandis L.) Plantation at Ilorin, Nigeria
    (Faculty of Agriculture, Taraba State University, Jalingo, Nigeria, 2019) TAKIM, F.O; Affinnih, K.O; Falola-Olasunkanmi, J.A; Garuba, I.A; Osatuyi, O.O
    Teak is widely planted for timber in the tropics, grown in botanical gardens as an ornamental for its large leaves and spreading flower clusters. The study was conducted on a Teak Plantation established in phases between 2008 and 2012 to examine the impact of wildfire on weed seedling emergence and soil nutrients at Ilorin within the southern Guinea savanna of Nigeria. Soil samples were collected within three depths (0-10 cm, 11-20 cm and 21-30 cm) few days after the plantation was burnt by uncontrolled wildfire in 2016 and 2017. The weed seeds present were enumerated and soil properties analysed. Floristic weed survey was conducted on the teak plantation between May and November of each year. Results showed that Andropogon gayanus (18%), Tephrosia pedicellata (17%) and Senna obtusifolia (11%) were the most abundant weed species. Wildfire significantly (p<0.05) influenced weeds emergence. Twenty–five weed species were identified during the floristic weed survey. Twenty-two (22) % and 14 % of the identified weed species emerged on the burnt and unburnt field, respectively. Silt decreases while sand and clay fractions increased in the burn fields. Total N, organic C and available P increased in alternate years and depth of soil sampling. This result is valuable in aiding the prediction of likely weed infestations in a wildfire affected field, provide a valuable input in determining weed control strategy and soil nutrient management
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    NPK partitioning, growth, yield and proximate composition of okra (Abelmoschus esculentus) under water deficit stress
    (Agricultural Academy of Bulgaria, 2020-04) Kareem, I; Faseyi, A.F; Saliu, A.K; Abdulmaliq, S.Y; Adekola, O.F; Abdulkareem, K.A; Olayinka, B.U; Abdulaziz, A.; Alasinrin, S.K; Hakeem, A.K; Usman, M.; Lawal, M.T; Ahmed, O; Lawal, O.I; Bello, W.B; Salami, T.B; Ayeleke, D.A; Azeez, K.O; Olaniyan, J.O; Affinnih, K.O; Olalekan, K.K
    This experiment was conducted to determine the effects of drought stress on growth yield, NPK partitioning and nutritional composition of okra. To achieve this objective, four levels of water deficit stress (daily (control), a day interval, two days interval and three days interval irrigation) were tested on 17Lucky19 (hybrid) okra variety in a pot experiment. The experiment was laid out randomized complete block design (RCBD) with three replications. Parameters used to determine the effects of water deficit stress were nitrogen, phosphorus and potassium contents of stems and leaves. Plant height, number of branches, number of leave, number of fruits, fresh fruit mass, dry straw mass, chlorophyll content, and proximate parameters (crude fat, crude fibre, crude protein and ash contents of the leaves) were also used. It was found that all the growth and yield parameters tested reduced with increase in water deficit levels. Similarly, all proximate parameters decreased with increase in water deficit levels with the exception of crude fibre which increased with increase in water deficit levels. In the same vein, nitrogen and potassium levels decreased with increase in water deficit levels in both leaves and stems. However, phosphorus levels in stems and leaves decreased with increase in water deficit levels. It is, therefore, concluded that 17Lucky19 is susceptible to water deficit stress. This implies that water deficit tolerant or resistant varieties should be used instead of 17Lucky19 whenever areas with irregular rainfall are to be used for cultivating this variety of okra.
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    Optimization of priming duration for rice production under drought stress
    (Agricultural Academy of Bulgaria, 2020-04) Kareem, I; Kareem, S.A; Abdulmaliq, S.Y; Adekola, O.F; Abdulkareem, K.A; Olayinka, B.U; Abdulaziz, A.; Yusuf, A.S; Kuranga, A.B; Magaji, U.; Lawal, M.T; Ahmed, O; Lawal, O.I; Bello, W.B; Salami, T.B; Ayeleke, D.A; Azeez, K.O; Olaniyan J,O; Affinnih, K.O; Olalekan, K.K
    The type of priming chemical and the duration of priming are important factors determining the performance of plants resulting from priming treatment. Therefore, this research was conducted to determine the effects of different priming agents and soaking durations on growth and yield of drought-stressed rice. To achieve this objective, a pot experiment was conducted where three priming agents (100 mM calcium chloride dihidrate (CaCl2), 40% (w/v) polyethylene glycol (PEG) 6000 and 100 ppm kinetin) combined with two soaking (priming) durations were tested on drought stressed rice plants in a 3x2 factorial experiment. The experiment was laid out in a completely randomized design (CRD) with three replications. Parameters on germination percentage, number of tillers, number of productive tillers, tiller effi ciecy, shoot fresh and dry weight, yield, seed length to seed width ratio (seed size), 100-seed weight and harvest index were taken. Also, data on photosynthetic rate, stomatal conductance, intercellular carbon-dioxide and transpiration rate and leaf water were taken. It was found that the highest yield was got when PEG was used for priming for 48 hours. It was found that number of tillers, shoot dry mass, 100-seed mass, rate of photosynthesis, stomatal conductance, transpiration and leaf area water were increased when seeds were primed for 48 hours with kinetin solution. However, tiller efficiency, harvest index and seed size were favoured by 24-hour priming with PEG while number of productive tillers, shoot fresh mass and grain yield were favoured by 48 hour priming with PEG. It was concluded that 48 hour priming with PEG was effective alleviate moisture stress in MR219 rice. This implies that to avoid wastage of priming chemicals and circumvent undue prolongation of priming period or duration which will result in harming the seeds (toxicity) and poor performance of the resulting plants, 40% (w/v) PEG 6000 should be used for 48 hours for priming MR219.
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    Survey of Sedge Weeds for Root–Knot Nematode in Arable Fields in a Southern Guinea Savannah of Nigeria
    (Weed Science Society of Nigeria, 2021-11-04) Garuba, I.A; Falola-Olasunkanmi, J.A; Affinnih, K.O; TAKIM, F.O