Assessment of Soil Chemical Properties and Coffee Leaf Analysis in Goma Woreda of Oromia Region
Mohammed Kedir,
Taye Kufa,
Bayu Dume
Issue:
Volume 10, Issue 3, June 2021
Pages:
93-101
Received:
20 March 2021
Accepted:
21 May 2021
Published:
27 May 2021
Abstract: Information on soil test and plant analysis is essential for sustainable soil fertility management and crop production. Conversely, this is lacking for smallholder coffee farms in Gomma district, Southwestern Ethiopia. Thus, the objectives of this study were to assess and determine the nutritional status of the soil–plant relation from coffee growing farms in Gomma district. Accordingly, soil samples, coffee leaves and field history were collected from 10 coffee farms during pinhead phase. Soil samples collected from 0-30 cm depth were prepared and analyzed in the laboratory following standard procedures. For data analysis, descriptive statistics was used. Results showed that the soil pH ranged from strongly to moderately acidic (pH 4.72–5.75) and low to medium in their organic matter (2.68–4.72%) content. Total N content was low in 20% of the samples, while 100% of the soil samples found to be deficient in P content. Exchangeable Ca ranged from low to high, exchangeable Mg in all soil samples was medium, while exchangeable K ranged medium to very high. Nevertheless, K to Mg ratio varied from 0.64:1 to 2.62:1, indicating Mg induced K deficiency in 10%. The plant tissue analysis depicted that 50, 60 and 50% low in N, P and K, respectively, while high in Ca and Mg concentrations. Significant and positive correlations of soil phosphorus, potassium, calcium and magnesium with tissue concentration were existed. For sound conclusion, soil test and crop response calibration, appropriate soil, N, P, K, organic fertilizers and lime are recommended for future work.
Abstract: Information on soil test and plant analysis is essential for sustainable soil fertility management and crop production. Conversely, this is lacking for smallholder coffee farms in Gomma district, Southwestern Ethiopia. Thus, the objectives of this study were to assess and determine the nutritional status of the soil–plant relation from coffee growi...
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Structural and Ecological Characteristics of Tree Communities in the Forest of Pobe in Southeast Benin
Armand Kingbo,
Adek Rolex Aurel Agbo,
Jean Cossi Ganglo
Issue:
Volume 10, Issue 3, June 2021
Pages:
102-111
Received:
19 April 2021
Accepted:
24 May 2021
Published:
31 May 2021
Abstract: The main objective of this study is to determine the different tree communities in the forest of Pobè and characterize their structure and ecology to contribute to the sustainable management of this forest. The forest of Pobè is located between the parallels 6° 57' 20" and 6° 58' 04" north latitude and 2° 39' 46" and 2° 40' 45" east longitude. The sampling used for data collection is one central plot of 1 hectare (100 m x 100 m) at the center of a square of 4 ha (200 m x 200 m). Twenty-five plots were installed and the dendrometric measurements were taken on the trees (dbh≥10cm). The regeneration inventory was done in 125 quadrats of 100 m2 each at the rate of 5 quadrats per plot. The main results obtained showed that the forest of Pobè is diversified with 56 species of trees with an average density of 157 trees/ha and a basal area of 28.01m²/ha. The diameter structure shows that the trees of small diameters (≤40 cm) are the most represented, which presages a forest able of ensuring its own renewal. Two tree communities have been identified and characterized. The most representative is the community dominated by Triplochiton scleroxylon, Ceiba pentandra and Antiaris toxicaria and the community dominated by Triplochiton scleroxylon, Antiaris toxicaria and Terminalia superba. These two tree communities are well diversified and do not present a significant difference at the threshold of 5% for the diversity indexes calculated. The biggest threat of loss of biodiversity and the forest of Pobè degradation is anthropization, marked by the presence of vegetation fires, fuelwood cutting for charcoal production and the traffic paths often source of forest fragmentation.
Abstract: The main objective of this study is to determine the different tree communities in the forest of Pobè and characterize their structure and ecology to contribute to the sustainable management of this forest. The forest of Pobè is located between the parallels 6° 57' 20" and 6° 58' 04" north latitude and 2° 39' 46" and 2° 40' 45" east longitude. The ...
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Characterization and Classification of Soils of Askate Sub-watershed, Northeastern Ethiopia
Mulugeta Tufa,
Seid Ahmed,
Kefyialew Tilahun,
Mulugeta Fiseha,
Tadla Guadie
Issue:
Volume 10, Issue 3, June 2021
Pages:
112-122
Received:
13 March 2021
Accepted:
3 June 2021
Published:
10 June 2021
Abstract: Characterization and classification of soil is the main central information source for judicious soil management and enhance agricultural economy. Therefore, this study was conducted with the objective of characterization and classification of soil on Askate sub-watershed, northeastern Ethiopia. Four representative soil pedons were opened along topographic position and described on each identified genetic horizons basis on the field for their morphological characteristics following the soil field description guidelines. The morphological properties were examined in the field while physical and chemical properties were analyzed in laboratory. The results of the study were revealed variation in morphological, physical, and chemical properties of the soils. Soil textural classes were sandy loam to loam sandy. The bulk density ranged from 1.04 to 1.60 g cm-3. The soil reaction rated as slightly acidic to moderate acidic (5.4 to 6.7). The OM ranged from 0.41 to 3.23% while available P ranged from 0.72 to 9.36 mg kg-1 which was low to medium rate. The exchangeable bases ranged from low to medium rate in the study area. CEC was medium to high rate, which implies the medium nutrient reservoir of the soil. Finally, three soil types, Humic Cambisols, Haplic Luvisol, and Cambic Umbrisols were identified in the study area according to World Reference Base. Using the soils according to their potential and applications of integrated soil fertility managements are essential to keep the sustainability of soil fertility and nutrient availability.
Abstract: Characterization and classification of soil is the main central information source for judicious soil management and enhance agricultural economy. Therefore, this study was conducted with the objective of characterization and classification of soil on Askate sub-watershed, northeastern Ethiopia. Four representative soil pedons were opened along top...
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