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The effect of cocoa pod husk as organic fertilizer on the growth of tea (Camellia sinensis (L) o. Kuntze) under varying light intensities in Ibadan – South West Nigeria
Published 2019Subjects: “…Organic Fertilizer…”
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Page will reload when a filter is selected or excluded.- Natural Sciences 56 results 56
- Natural Sciences — Physical Sciences 56 results 56
- Organic Chemistry 56 results 56
- NATURAL SCIENCES::Biology::Organism biology::Morphology 6 results 6
- Nigeria 3 results 3
- Osmolytes 3 results 3
- Oxidative Stress 3 results 3
- Contamination 2 results 2
- Correlation 2 results 2
- Drought 2 results 2
- Edaphic 2 results 2
- Internal organs 2 results 2
- Land use 2 results 2
- Natural forest 2 results 2
- Organic Amendment 2 results 2
- Organic Amendments 2 results 2
- Organic Fertilizer 2 results 2
- Organic Manure 2 results 2
- Organization 2 results 2
- Phytochemistry 2 results 2
- Plantations 2 results 2
- Soil Organic Carbon 2 results 2
- The regulatory functions of the soil are getting attention among scientists and Soil Organic Carbon (SOC) is an important indicator of soil health. A study was carried out to investigate the SOC storage potentials under different land use types (Tectona grandis, Gmelina arborea, Acacia siamea, Pinus carrribea, and Natural forest) in Omo Biosphere Reserves Nigeria. The impact of the five important land use types on SOC and other soil properties were analyzed. Soil core samples were taken at two depths (0-10 and 10-30cm) to observe the changes in soil properties with depth. Laboratory analyses were carried out to determine the bulk density, soil pH, soil moisture, and soil organic carbon. The data obtained were analyzed using the Analysis of variance (ANOVA) and Duncan Multiple Range Test (DMRT) was used to separate the means while Principal Component Analysis (PCA) was used to examine the relationship between the soil parameters. Correlation analysis was carried out to examine if a relationship exists between soil depth and different land use on soil organic content and all other soil properties. The result showed that at both depths there is no significant difference between depths in pH, soil organic carbon, and soil moisture except for bulk density. Total Soil Organic Carbon stored in soil was highest in Teak plantation (3.1), followed by Acacia (2.17), and Natural forest (0.92), and at depth SOC was high in 0 10cm depth. The maximum value of bulk density (gcm3) was found high in 0-10cm at depth and was found high in Teak plantation (1.68) followed by Pinus plantation (1.67) and Acacia plantation (1.53). The distribution of moisture content showed no significant difference but the highest moisture was stored in Natural forest plantation (39.04), followed by Teak plantation (34) and Gmelina plantation (20), and the lowest in Pinus carribea plantation (10). Moisture content across depth showed that 0-10cm depth stored the highest but the 10-30cm depth () had the highest pH. Among the land use types, Teak plantation (5.84) had the highest pH, followed by Gmelina plantation (5.4) and Natural forest plantation (5.23). Results showed that SOC storage in soils can be influenced by different land use systems. 2 results 2
- /Private organization 1 results 1
- Abiotic Factors 1 results 1
- Abiotic Stress 1 results 1
- Abiotic stress such as heavy metal contamination of agricultural soil limits crop production by disrupting plant’s physiological activities and seed germination. Exogenous proline, hormone and compost have been used to induce growth and stress tolerance in crop but little is known about their interactive and anti-oxidative roles in crop exposed to heavy metal stress. This study assessed the effects of pre-sowing seed soaking with exogenous proline (P) and hormones (Gibberellic acid; GA and Indole-acetic acid; IAA) on the Pb accumulation, osmolytes (P, phenolics; PH and Glycine betaine; GB), Photosynthetic pigments (chlorophyll and carotenoids) and stress indexes (H2O2 and malonialdehyde; MDA) of maize grown on compost amended Pb (23,959 mg kg-1 Pb) contaminated soil. Compost was applied at 20 t ha-1 and 40 t ha-1, P, GA and IAA were applied at 10 mM and 5 mM solely and in combinations to give a total of 34 treatments including control (Distilled water only) and replicated 3 times. Except in IAA treatment, seed pre-treatments with exogenous P and GA and soil amendment with compost generally enhanced chlorophyll production in maize and reduced GB, carotenoids, H2O2 and MDA in treated seeds compared to control. With regards to stress indexes G2+C1 gave the lowest values. Sole application of P1, P2, C2, G1 and I2 enhanced the production of proline in treated plants compared to combined application. Combination with compost was better than hormonal combination. A combination of P2 with C (40 t ha-1) (P2C2) gave the maximum chlorophyll content and reduced the endogenous GB and P. Treatment with P2C2 also reduced Pb accumulation in plant. In conclusion, exogenous application of hormones and proline in combination with organic amendment induces heavy metal tolerance in maize and increased protection against oxidative stress compared to contaminated control. The technique that can enhance crop growth on contaminated soil, reduce metal uptake and provide osmo-protection could be a promising approach. 1 results 1
- Adolescents 1 results 1
- Agricultural soils as habitats for beneficial soil bacteria are usually invaded by weeds, an occurrence which has detrimental effects on crops. Chemical herbicides mostly employed for weed control adversely affect soil bacteria. Previous studies have reported chemical herbicides’ effects on soil bacterial diversity suppressing microbial growth, however, information on soil types, and organic herbicides that could be an alternative is limited. Therefore, this study was designed to investigate the effects of chemical and organic herbicides on bacterial diversity in Alfisol and Inceptisol. Soils (Alfisol and Inceptisol) were collected from research farms at University of Ibadan, Institute of Agricultural Research and Training, National Horticultural Research Institute, and International Institute of Tropical Agriculture. In a screen house experiment using a factorial arrangement in a completely randomised design, Atrazine and S-Metolachlor (AS-M), Isopropyl Amine (IA), and Acetic Acid (AA) herbicides were applied as pre-, post- and organic herbicides, respectively on the soils. In the field experiments, AS-M, IA and AA herbicides were also applied to the Alfisol and Inceptisol. All herbicide-treated soils were sampled at 4 and 8 weeks and bulked to determine physico-chemical parameters and herbicides persistency of the treated and untreated soils using standard methods. The effect on bacterial diversity in herbicide treated Alfisol and Inceptisol were determined by DNA extraction from the soil samples using 16S rRNA amplicons sequenced on illumina miseq. Data were analysed using descriptive statistics, QIIME 2, and ANOVA at α0.05. Untreated Alfisol pH (6.20±0.12), organic carbon (3.90±0.04g/kg) and clay content (112.20±0.55g/kg) were significantly higher than Inceptisol pH (5.50±0.15), organic carbon (1.90±0.01g/kg) and clay content (103.90±0.81g/kg). At week 4, pH and organic carbon were significantly higher in Alfisol (6.30±0.21: 0.40±0.06g/kg) than Inceptisol (5.40±0.21; 0.10±0.06g/kg). Herbicides’ persistency was higher in Alfisol than Inceptisol. Intermediate products (acetamide) in AA-treated soil (Alfisol: 30.2%; Inceptisol: 25.0%) < 2-amino-3-4- dihydro-4-4-dimethyl-6-pyrimidinone (Alfisol: 48.7%; Inceptisol: 35.3%) in IA < atrazine (Alfisol: 50.9%; Inceptisol: 37.1%) in AS-M at week 4, with a similar trend Alfisol: 22.1%, Inceptisol: 19.2%; Alfisol: 42.6%, Inceptisol: 33.2%; Alfisol: 43.9%, Inceptisol: 35.1% at week 8. Alfisol had significantly higher bacteria taxa of 79% than 21% in Inceptisol. Methylomicrobium, Saccharopolyspora, Domibacillus, Blatococcus, Fuctibacillus, Limnobacter, Sneathiella, Nocardiopsis, Aquisphaera, and Stenotrophomonas were found in Alfisol and Inceptisol. However, Limnobacter and Methylomicrobium; Sneathiella and Nocardiopsis; Aquisphaera and Saccharopolyspora; were the bacterial genera that survived in AS-M, IA and AAtreated-soils, respectively. Significant effect in relative abundance of bacterial genera Chthoniobacter (Alfisol: 0.5%, 0.4%, 0.3%, 0.6%: Inceptisol: 0.3%, 0.2%, 0.3%, 0.5%) and Pedosphaera (Alfisol: 0.6%, 0.6%, 0.5%, 0.9%, Inceptisol: 0.7%, 0.5%, 0.5%, 0.9%) were observed at week 4, Chthoniobacter (Alfisol: 0.5%, 0.4%, 0.4%, 0.6%: Inceptisol: 0.3%, 0.3%, 0.4%, 0.5%) and Pedosphaera (Alfisol: 0.6%, 0.8%, 0.5%, 0.9%, Inceptisol: 0.3%, 1.2%, 0.9%, 1.3%) at week 8 in untreated and soil treated with AS-M, IA and AA, respectively. Alpha and beta diversity indicated significant differences in the relative abundance of bacteria between Alfisol and Inceptisol. The relative abundance of bacteria diversity in Alfisol and Inceptisol were reduced by chemicals but increased by organic herbicides 1 results 1
- Agronomic parameters 1 results 1
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