Assessing spatial variability of selected soil properties in Upper Kabete Campus coffee farm, University of Nairobi, Kenya

Mwendwa, S.M; Mbuvi, JP; Kironchi, G.; Gachene, Ckk

doi:10.1016/j.heliyon.2022.e10190

Cited by 9 publications

(11 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with the findings of Agustina et al (2020) in which total soil nitrogen ranging from 0.21 % to 0.50% belongs to the medium category. In addition, the results of total soil nitrogen in this study were relatively lower than the critical levels (0.3-0.6 %) for optimal coffee production as recommended by The Coffee Research Foundation (CRF) (Mwenda et al 2022). This is in line with Nzeyimana et al (2019) which reported that increasing total soil nitrogen was able to increase coffee production.…”

Section: Discussionsupporting

confidence: 77%

Soil organic matter and nitrogen in varying management types of coffee-pine agroforestry systems and their effect on coffee bean yield

Sudharta

HAKIM²,

Fadhilah³

et al. 2022

Biodiversitas

View full text Add to dashboard Cite

Abstract. Sudharta KA, Hakim AL, Fadhilah MA, Fadzil MN, Prayogo C, Kusuma Z, Suprayogo D. 2022. Soil organic matter and nitrogen in varying management types of coffee-pine agroforestry systems and their effect on coffee bean yield. Biodiversitas 23: 5884-5891. Coffee cultivation in agroforestry systems is mostly planted without soil fertility management. While there are several management interventions to improve soil quality in agricultural practices, it is not clear whether particular treatments, such as adding organic fertilizers and nitrogen fertilizers could increase coffee production in agroforestry settings. This study aimed to analyze soil organic matter and nitrogen in varying management types and its effect on coffee bean yield in a coffee-pine agroforestry setting in East Java, Indonesia. We evaluated four types of coffee management (treatments) namely: (i) no management, (ii) pruning coffee plant branches, (iii) a combination of pruning and addition of fertilizers with a planting distance of pine trees of 3 x 2 m, and (iv) pruning under pine trees with a planting distance of 6 x 2 m. The soil organic matter, total and available soil nitrogen were measured at 0-0.2 m and 0.2-0.4 m soil depths. We measured coffee bean yield to 100 coffee plants per plot. The coffee bean yield in the no-management treatment reached 376 kg ha-1, while the yield under the other three treatments increased up to 3.9 times compared with no-management. This increasing coffee bean yield did not correlate with soil organic matter in topsoil, with a correlation between coffee bean yield and total ant available soil nitrogen being positive and negative, respectively. We concluded that the limitation of N in the coffee-pine agroforestry system would require management intervention in the form of adding nitrogen fertilizers to increase coffee bean yield.

show abstract

Section: Discussionsupporting

confidence: 77%

Soil organic matter and nitrogen in varying management types of coffee-pine agroforestry systems and their effect on coffee bean yield

Sudharta

HAKIM²,

Fadhilah³

et al. 2022

Biodiversitas

View full text Add to dashboard Cite

show abstract

“…Mg was more abundant at the 0-20 cm depth than at 20-40 cm. SMg was within an optimum range of 0.8-4 cmolc/kg [55] at 20-40 cm, but above the optimum at 0-20 cm. SMg was generally higher under ACS and the lowest under COSS and CCS at the two soil depths.…”

Section: Effects Of Selected Smcps On Selected Soil Propertiesmentioning

confidence: 86%

“…SP is crucial for plant metabolism and energy transformation [54], and is essential for the development of the bearing branches in coffee. Available SP was within an optimum range of 20-100 ppm [55], except for ACS at the 0-20 cm depth, where it was slightly above the optimum. When the soil pH ranges from 6.0 to 6.5, P is more prevalent in the soil, according to Prasad and Power [56].…”

Section: Effects Of Selected Smcps On Selected Soil Propertiesmentioning

confidence: 89%

“…SK is essential for supporting physiological functions, protein synthesis, and plant water balance [14]. It was within the optimum ranges of 0.4-2 cmolc/kg [55] at the 0-20 cm depth across treatments, however it was lower under COSS. At 20-40 cm, it was below the optimum under COSS and CCS.…”

Section: Effects Of Selected Smcps On Selected Soil Propertiesmentioning

confidence: 96%

“…Soil calcium (SCa) controls the plant's response to intrinsic stimuli and stress signals [66]. SCa was within the optimum range of 1.6-10 cmolc/kg [55] at 20-40 cm, but above the optimum at 0-20 cm. SCa was higher under SMCPs and significantly different with depth; at 0-20 cm, it was higher under ACS.…”

Section: Effects Of Selected Smcps On Selected Soil Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Potential of Moisture Conservation Practices to Improve Soil Properties and Nutrient Status of Robusta Coffee Plant

et al. 2023

View full text Add to dashboard Cite

Soil moisture conservation practices (SMCPs) have been adopted in Uganda to adapt to the effects of climate variability. However, limited information exists on how conservation measures influence the physico-chemical properties of soil and coffee leaf nutrient concentrations. Thus, we determined the effects of selected SMCPs on the soil physio-chemical properties and leaf nutrient concentrations in Robusta coffee in a randomized incomplete block design, replicated three times, in Kituza, Uganda. Soil samples were collected from 0 to 20 cm and 20 to 40 cm depths, and analyzed in the laboratory following standard procedures for selected physio-chemical properties. Coffee leaf samples were picked from each treatment (open sun coffee (COSS), coffee cover crop, Desmodium intortum (CCS), coffee mulch, Miscanthidium violoceum (CMS), and coffee A. coriaria (ACS)). Bulk density was significantly (p < 0.001) the highest under ACS (1.61 gcm−3) and lowest under CCS (1.29 gcm−3), and it significantly (p < 0.001) increased with depth. The soil organic matter was higher than the optimum range of 1–3% at the 0–20 cm depth across different SMCPs, but within the optimum range at the 20–40 cm depth. Leaf nitrogen was significantly the highest under ACS (3.19%) and lowest under COSS (2.30%). Overall, the findings suggest that SMCPs improve the soil physio-chemical attributes and leaf nutrients for sustainable coffee productivity. However, ACS improved the leaf plant nutrition better compared to other SMCPs.

show abstract

Clustering of the chemical properties of small‐scale farm soils to develop fertilizer blend ratios

Mugo,

Karanja,

Gachene

et al. 2024

Agrosystems Geosci & Env

View full text Add to dashboard Cite

Crop management through site‐specific fertility methods is crucial for both economic and environmental benefits. Potato‐specific fertilizer has not been fully established in Kenya, and the current fertilizer recommendation has been in place for a long time. A study was designed through soil sampling from small‐scale farms to make a soil‐based fertilizer recommendation for potato production. Inverse distance weighting interpolation was used to study spatial distribution of pH and major nutrients. Cluster analysis was used to group sampled farms into similar fertility clusters for easier fertilizer recommendations. Spatial distribution maps were identified for the project area. Three and four clusters were established in Meru and Nyandarua counties, respectively, among which three had adequate nutrients for potato production. At least 150 kg N ha−1 is recommended in most of the farms and 160 kg P ha−1 in Nyandarua, while 285 kg K ha−1 was recommended in one of the clusters (nitrogen, phosporus, potassium [NPK] 1:1:1.5). Cluster analysis can be used to enhance fertilizer recommendations. The assumption that K is adequate in tropical soil should not be generalized. Fertilizers in the market with formulations close to the recommended ones should be evaluated for field performances and adjustment of the final potato fertilizer.

show abstract

Assessing spatial variability of selected soil properties in Upper Kabete Campus coffee farm, University of Nairobi, Kenya

Cited by 9 publications

References 76 publications

Soil organic matter and nitrogen in varying management types of coffee-pine agroforestry systems and their effect on coffee bean yield

Soil organic matter and nitrogen in varying management types of coffee-pine agroforestry systems and their effect on coffee bean yield

Potential of Moisture Conservation Practices to Improve Soil Properties and Nutrient Status of Robusta Coffee Plant

Clustering of the chemical properties of small‐scale farm soils to develop fertilizer blend ratios

Contact Info

Product

Resources

About