This study determined effects of composted market waste and Arbuscular Mycorrhiza (AM) on Root Colonization (RC) and fibre yield of kenaf. The experimental design was 2 x 12 factorial in a Completely Randomized Design replicated three times. The treatments were with AM (AM +) and without (AM-) and twelve levels of soil amendment: 0, NPK 20:10:10 (60 kg N ha-1), purely composted market waste (20, 40, 60, 80 and 100 kg N ha-1), and composted market waste fortified with superphosphate and urea (20, 40, 60, 80 and 100 kg N ha-1). Residual effect of the treatments was also determined. Data on RC and yield were collected and analyzed using descriptive statistics and ANOVA. RC ranged from 14.4 to 78.1%. Inoculated Tiannug 1 at 40 kg N ha-1 composted market waste fortified with superphosphate and urea had significantly (p < 0.05) higher RC (79.8%), bast (9.6 g pot-1) and core (19.9 g pot-1) yields. For the residual effect, inoculated Tiannug 1 at 100 kg N ha-1 purely composted market waste had significantly (p < 0.05) higher RC (69.0%), bast (2.7 t ha-1) and core (5.8 t ha-1) yields. Tiannug 1 was highly colonized by AM and the optimum yields observed at 40 kg N ha-1 composted market waste fortified with superphosphate and urea.
The distribution and enrichment of metals in the sediments of Ogun River within Abeokuta City, south-western Nigeria, were assessed in 2007. Replicate samples of sediments were collected from 10 sampling sites along the length of the river within the city. Concentrations of Cd, Zn, Cr, Fe, Ni and Pb ranged between 0.03 and 0.66 mg kg -1 , 1.75 and 12.63 mg kg -1 , 5.19 and 28 mg kg -1 , 156 and 750.50 mg kg -1 , 17.50 and 60.00 mg kg -1 , and 0.73 and 4.5 mg kg -1 , respectively, all, with the exception of Fe, being lower than sediment quality guideline values. Sediment pollution assessment was carried out using enrichment factor (EF) and geoaccumulation index (I geo ). On average, EF values indicated that Ogun River sediments were moderately contaminated with Cd. I geo values suggest that the sediment was moderately polluted with Cd, Zn, Fe, Mn and Pb.
Climate variability has often been described as one of the most pressing environmental challenges.Our lifestyles, economy, health, income, livelihood and our social well-being are all affected by climate. This paper therefore, assessed climate variability, its effect of gender and coping strategies they adopt in Baringo County, Kenya. Descriptive and inferential statistics were used in analyzing the data obtained for the study. Findings show that there is consisent decrease in rainfall and increase in temperature in recent times. Male gender dominates household decisions and roles such as land preparation, livestock keeping/feeding, pesticide application and fence construction in Baringo County, Kenya while the female gender dominates household roles such as water supply, domestic home chores and more of agricultural activities. Livestock migration was the major traditional coping strategy adopted in Baringo County. 56.8% of the respondents shows that cutting grasses for livestock was the major short term coping strategy adopted while Rainfall harvesting and storage (5.92%) was the least adopted in the studied area. Long term coping strategy to climate variability mostly adopted by the rural populace in is livestock migration (48.52%), it was also observed here that the least long term coping strategy adopted is finding alternative job as reputed by 4.44% of the respondents. Special intervention projects such as rain water harvesting techniques, drought resistant crops, short term crops etc, should be provided to rural populace/dwellers in Baringo County, and other parts of Kenya experiencing severe variability in climate, resulting to drought.
This study determined the performance and heavy metals uptake of kenaf at different levels of compost application in textile effluent polluted soil. Polluted soil was collected from the vicinity of a textile company in Nigeria. Twelve-litre plastic pots were filled with 10 kg soil. Soil amendments applied were: 0 (control), 60 Kg N ha -1 of N.P.K 20:10:10 (recommended rate), 40, 60, 80, and 100 Kg N ha -1 of Composted Market Waste (CMW). The pots were arranged in Completely Randomized Design and replicated three times. Growth parameters were taken. Plants were harvested 8 weeks after sowing and separated into leaves, stems and roots. Lead, Cadmium, Chromium and Zinc levels in plants and soil were determined using Atomic Absorption Spectrophotometer. Data were analysed using descriptive statistics and analysis of variance. CMW at 100 Kg N ha -1 significantly (p < 0.05) enhanced the growth and yield of kenaf. Highest concentrations of heavy metals were observed in kenaf parts at 100 Kg N ha -1 of CMW. Higher concentrations of Chromium (0.15 mg kg -1 ) Lead (1.50 mg kg -1 ) and Cadmium (0.14 mg kg -1 ) were observed in the root while higher concentration of Zinc (23.48 mg kg -1
ABSTRACT:The effect of Inorganic Fertilizer (IF) on the microbial degradation of diesel polluted soil in Abeokuta was assessed by collecting Top soil (0 -15 cm depth) from diesel polluted site
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