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Item Yield and beverage quality of thirty-one Coffea canephora clones shaded by Hevea brasiliensis(Editora UFLA, 2024-11-26) Machado Filho, José Altino; Costa, Poliana Rangel; Arantes, Lúcio de Oliveira; Rodrigues, Weverton Pereira; Crasque, Jeane; Dousseau-Arantes, SaraCoffea canephora is predominantly grown in monoculture in Brazil, particularly in areas with full sunlight. However, adverse climatic conditions, such as prolonged droughts and rising temperatures, are increasingly affecting the major coffee-producing regions. The objective of this study was to evaluate the influence of rubber tree shading on the productivity and cup quality of 31 clones of C. canephora, cultivated in the northern region of Espírito Santo state. Thirty-one C. canephora clones were evaluated under three shading conditions: full sunlight, morning shade, and afternoon shade. The parameters analyzed included thousand-seed weight, quantity of beneficiated green coffee beans, yield, the number of ripe fruits required to produce a 60 kg bag of green coffee beans, and sensory analysis. The results showed that coffee clones grown in afternoon shade had a reduced yield per plant but produced heavier beans and better beverage quality. Clones 02, 03, 16, 19, 31, 99, 120, and 143 stood out with the highest yields, while clones 46 and 106 exhibited the lowest. Additionally, the yield analysis revealed that the production of green grains was significantly affected by the growing conditions, with the most productive clones thriving under full sunlight. The afternoon shade may reduce yield, but it improves grain weight and beverage quality, making it a viable strategy for C. canephora clones. Selection should prioritize yield and quality in shaded environments.Item Decomposition and nutrients released from forest and perennial crops associated with organic coffee(Editora UFLA, 2021) Araujo, João Batista Silva; Silva, Matheus Wandermurem da; Lima, Wallace Luís de; Pereira, Ana Claudia Hertel; Endringer, Denise Coutinho; Souza, Jacimar Luís deAgroforestry consortia increase organic matter and nutrient cycling in agricultural systems. For this reason, the objective of this work was to study the release rate of nutrients and the decomposition of different organic residues, two times of the year, obtained from four cultures intercropped with conilon coffee, aiming to relate the released nutrients to the coffee needs. The decomposition of organic matter residues and the release of nutrients from Inga edulis, Musa spp, Gliricidia sepium, and Bactris gasipaes were evaluated in two different periods. I. edulis residues with a higher amount of polyphenols, and those of Musa spp, with a higher C/N ratio, showed slow decomposition. The decomposition rates were lower in experiments started in March and higher in August. Inga and banana have high residual values of nutrients at 270 days in the decomposition started in March.