Biblioteca do Café
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Item Deep soil tillage and mineral and organic fertilization for Coffea canephora cultivation(Escola Superior de Agricultura "Luiz de Queiroz", 2025-05-23) Calvache, Diego Fernando Arcos; Mattiello, Edson Marcio; Castro, Gustavo Franco de; Cuichán, Cristian Mauricio Vega; Assis, Igor Rodrigues deIn the state of Espírito Santo, Brazil, the production of conilon coffee plays a pivotal role in the economy, accounting for 75 % of national production. However, the growth of coffee roots is impeded by physical limitations in subsurface soil, primarily due to natural compaction, which restricts access to nutrients and water. To address these challenges, the implementation of deep soil tillage, along with mineral and organic fertilizers have been proposed as potential solution. These practices aim to alleviate or eliminate the constraints on root growth in deeper soil layers. The present study to assessed the effects of deep soil tillage and mineral and organic fertilization on coffee productivity and quality. The experiment was conducted in São Gabriel da Palha, Espírito Santo state, Brazil, following a simple arrangement of five treatments, employing a randomized block design with four replications. The treatments were as follows: t1 = soil tillage at 60 cm depth and standard fertilization; t2 = soil tillage at 60 cm depth, mineral fertilizer, chicken manure, and biochar; t3 = deep soil tillage at 150 cm depth and mineral fertilization; t4 = deep soil tillage at 150 cm depth, mineral fertilizer, and chicken manure; t5 = deep soil tillage at 150 cm depth, mineral fertilizer, chicken manure, and biochar. The outcomes of this study revealed that deep soil tillage, in conjunction with mineral and organic fertilization, significantly improved the chemical properties throughout the soil profile. This combination of practices increased accumulated productivity of up to 30 % following five consecutive coffee harvests. These findings underscore the importance of reducing or eliminating chemical constraints in cohesive soils as a pivotal practice for enhancing coffee yields.Item Chemical attributes of an Oxisol with the addition of conilon coffee straw biochar(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2023) Alvarenga, Anarelly Costa; Passos, Renato Ribeiro; Andrade, Felipe Vaz; Mendonça, Eduardo de Sá; Rangel, Otacílio José Passos; Mosa, Lázaro LongueThe objective of this work was to evaluate the effects of increasing rates of biochar produced with coffee straw, at two pyrolysis temperatures, on the chemical attributes of an Oxisol cultivated with conilon coffee (Coffea canephora) and on the nutrient content of coffee tree leaves. Treatments consisted of pyrolysis at two temperatures (350 and 600 °C) and of five biochar rates (0, 5, 10, 15, and 20 Mg ha-1). The following soil chemical attributes were evaluated: pH in water; P, K, Ca, Mg, Al, H+Al, Zn, Cu, Fe, and Mn contents; effective and potential cation exchange capacity (CEC); sum of bases (SB); base (V) and aluminium (m) saturation; and N, P, K, Ca, Mg, Zn, Cu, Fe, and Mn contents in the leaves. The biochar produced at 600°C, at rates of 10 and 15 Mg ha-1, promoted a greater K release into the soil. Regardless of temperature, coffee straw biochar increased K and P availability, sum of bases, base saturation, and CEC in the soil, but did not influence macro- and micronutrient contents in the leaves. The addition of increasing rates of coffee straw biochar in the soil increases P, K, Mg, SB, CEC, and V, regardless of pyrolysis temperature.Item Chemical attributes of an Oxisol with the addition of conilon coffee straw biochar(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2023-05-19) Alvarenga, Anarelly Costa; Passos, Renato Ribeiro; Andrade, Felipe Vaz; Mendonça, Eduardo de Sá; Rangel, Otacílio José Passos; Mosa, Lázaro LongueThe objective of this work was to evaluate the effects of increasing rates of biochar produced with coffee straw, at two pyrolysis temperatures, on the chemical attributes of an Oxisol cultivated with conilon coffee (Coffea canephora) and on the nutrient content of coffee tree leaves. Treatments consisted of pyrolysis at two temperatures (350 and 600°C) and of five biochar rates (0, 5, 10, 15, and 20 Mg ha-1). The following soil chemical attributes were evaluated: pH in water; P, K, Ca, Mg, Al, H+Al, Zn, Cu, Fe, and Mn contents; effective and potential cation exchange capacity (CEC); sum of bases (SB); base (V) and aluminium (m) saturation; and N, P, K, Ca, Mg, Zn, Cu, Fe, and Mn contents in the leaves. The biochar produced at 600°C, at rates of 10 and 15 Mg ha-1, promoted a greater K release into the soil. Regardless of temperature, coffee straw biochar increased K and P availability, sum of bases, base saturation, and CEC in the soil, but did not influence macro- and micronutrient contents in the leaves. The addition of increasing rates of coffee straw biochar in the soil increases P, K, Mg, SB, CEC, and V, regardless of pyrolysis temperature.