Examining growth, yield and bean quality of Ethiopian coffee trees : towards optimizing resources and tree management

Bote, Adugna Debela

doi:10.18174/383671

Cited by 4 publications

(5 citation statements)

References 64 publications

(139 reference statements)

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“…This was in conformity with the study of Goudsmit et al [19] who described the effects of fertilizer treatments on cacao pod development and pod nutrient content. According to Bote [20] and El-Motaium et al [21], seasonal difference in pod development could be attributed to seasonal growth in vegetation and tendency for treatments assimilation.…”

Section: Discussionmentioning

confidence: 99%

Performance of Cacao (Theobroma cacao L.) Varieties to Wood Ash and NPK Fertilizer on Flowering, Cherelle Wilt and Pod Yield

Babadele,

Oyinkansola

2024

AJAHR

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Experiments were conducted to evaluate NPK fertilizer and wood-ash application on flowering, cherelle performance and pod yield of cacao (Theobobroma cacao L). Treatments includes NPK 15.15.15; NPK + wood-ash; sole wood-ash and control with five cacao varieties (TC1, TC2, TC3, TC4, and TC6) in a 4x5 factorial experiment with three replications. Data were measured on flowering, cherelle formation, and pod development. From the results, flowering, cherelle formation and pod development were significantly enhanced by application of NPK, sole wood-ash and their combinations over control plots. Application of wood-ash alone significantly enhanced flowering, cherelle formation and pod development in both seasons over other fertilizer treatments. However, cherelle wilt under sole application of wood-ash was significantly higher compared to sole NPK and NPK + wood-ash combinations. Interaction effects of fertilizer and cacao varieties had significant positive effects on flower development and reduced cherelle wilt in both light and main crop seasons. Interactions of wood-ash and cacao varieties were found to significantly enhanced cherelle formation and pod development. The study concludes that NPK, NPK + wood-ash and sole wood-ash treatments significantly enhanced flowering, cherelle formation and pod development in cacao over the control. Also, cherelle with rate drop significantly with integration of NPK+wood-ash

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Section: Discussionmentioning

confidence: 99%

Performance of Cacao (Theobroma cacao L.) Varieties to Wood Ash and NPK Fertilizer on Flowering, Cherelle Wilt and Pod Yield

Babadele,

Oyinkansola

2024

AJAHR

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“…Likewise, DaMatta et al (2018) reported that coffee plants tolerated higher temperatures when ample water was supplied. A study from Southwest Ethiopia demonstrated that coffee trees grown under open shade conditions produced beans of lower acidity, body and flavor as compared to the coffee plants grown under dense shade (Bote, 2016). On the other hand, higher bean size and mass were obtained when shade canopy cover increased.…”

Section: Importance Of the Biophysical Variables For Coffee Cupping S...mentioning

confidence: 99%

Within and among farm variability of coffee quality of smallholders in southwest Ethiopia

et al. 2023

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The biophysical drivers that affect coffee quality vary within and among farms. Quantifying their relative importance is crucial for making informed decisions concerning farm management, marketability and profit for coffee farmers. The present study was designed to quantify the relative importance of biophysical variables affecting coffee bean quality within and among coffee farms and to evaluate a near infrared spectroscopy-based model to predict coffee quality. Twelve coffee plants growing under low, intermediate and dense shade were studied in twelve coffee farms across an elevational gradient (1470-2325 m asl) in Ethiopia. We found large within farm variability, demonstrating that conditions varying at the coffee plant-level are of large importance for physical attributes and cupping scores of green coffee beans. Overall, elevation appeared to be the key biophysical variable influencing all the measured coffee bean quality attributes at the farm level while canopy cover appeared to be the most important biophysical variable driving the abovementioned coffee bean quality attributes at the coffee plant level. The biophysical variables driving coffee quality (total preliminary and specialty quality) were the same as those driving variations in the near-infrared spectroscopy data, which supports future use of this technology to assess green bean coffee quality. Most importantly, our findings show that random forest is computationally fast and robust to noise, besides having comparable prediction accuracy. Hence, it is a useful machine learning tool for regression studies and has potential for modeling linear and nonlinear

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“…The variables include stem girth, number of internodes on stem, plant height, canopy height, canopy diameter, number of primaries, number of active bearing primaries, length of longest primary, number of internodes on primary, leaf blade length and leaf blade width. The measurements were made in reference to Ferrão et al (2019); Njoroge et al (1992); and Bote (2016). Eight individual trees per plot were selected and marked for repeated growth measurements.…”

Section: Data Collectionmentioning

confidence: 99%

“…Potential yield of C. canephora is estimated at 5 tons/ha yet in sub-Saharan Africa where smallholder farmers produce 80% of the crop, only 0.6 t/ha is realized (Bote, 2016;Geneti, 2019;Wang et al, 2015). Beside genetic potential (Egonyu et al, 2015b;Ferguson et al, 2011;Frasca et al, 2014;Geneti, 2019;Musoli et al, 2009), poor agronomic practices account for loss of over 50% of a variety yield potential (Boreux et al, 2016;Kagezi et al, 2014;Owere et al, 2014;Wang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Early Morphological Growth Response and Incidence of Key Pests Under Two Spacing Regimes of Coffea canephora

Sseremba

Kagezi

Kobusinge

et al. 2021

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Coffea canephora has non-limiting but unexploited yield and quality potential when compared with C. arabica. Coffee tree density optimization can improve fortunes of smallholder farmers. An attractive example is that high productive countries where high plant densities do increase area yield but across boardrecommendations are illogical especially with variety and agroecological variations. We aimed to compare two spacing regimes for growth response and pest incidence using Kituza Robusta clone. Randomized complete block designs with three replications and eight plants per plot were established at four agroecologically diverseon-farm locations. Eleven plant growth variables were measured. In addition incidences of five key pests were assessed. Data was collected on a 3-month interval starting from 12 up to 21 months after planting. Highly significant differences between spacing regimes (p<0.01) were obtained for majority of variables. Mean growth response was generally higher under 3 m x 1 m (high density) than 3 m x 3 m (low density) particularly with stem girth, plant height, length of longest primary branch, and leaf blade length. Conversely, pest incidence of black coffee twig borer, leaf eating beetles, leaf miners, and tailed caterpillars, except skeletonizers was higher under high than low plant densities. The findings provide aguide on implications of high plant densities on growth robustness which is translatable into yield potential; amidst a pest prevalence dilemma in studied type of C. canephora.

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Examining growth, yield and bean quality of Ethiopian coffee trees : towards optimizing resources and tree management

Cited by 4 publications

References 64 publications

Performance of Cacao (Theobroma cacao L.) Varieties to Wood Ash and NPK Fertilizer on Flowering, Cherelle Wilt and Pod Yield

Performance of Cacao (Theobroma cacao L.) Varieties to Wood Ash and NPK Fertilizer on Flowering, Cherelle Wilt and Pod Yield

Within and among farm variability of coffee quality of smallholders in southwest Ethiopia

Early Morphological Growth Response and Incidence of Key Pests Under Two Spacing Regimes of Coffea canephora

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