Revista Brasileira de Ciências Agrárias
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Item Transferência de mudas clonais de café do sistema convencional para o sistema hidropônico modificado(Universidade Federal Rural de Pernambuco, 2023-08-15) Cunha, Samuel Henrique Braga da; Lima, Amador Eduardo de; Carvalho, Alex Mendonça de; Guimarães, Rubens José; Teramoto, Érico Tadao; Freitas, Ana Flávia deCloning plants by cuttings, mineral nutrition via modified hydroponics and the use of alternative substrates emerges as technological innovations for seedling production. The objective in this study was to evaluate the transfer of cuttings from the conventional system to the modified hydroponic system. The following variables were analyzed: seedling lenght; number of shoots; shoot lengnt; total leaf number; number of remaining leaves; leaf area; root area; stomatal conductance, density, and functionality; stomatal opening; root volume, area, length and diameter; leaf area ratio; specific leaf area and weight of specific leaf matter. For statistical analysis, a completely randomized design (CRD) with 5 treatments, six replications and ten plants per plot was used. From the results obtained, it is possible to conclude that: the rooting of Coffea arabica cuttings is not necessary in a conventional system, and it can be performed directly in a modified hydroponic system; an adaptation in the proposed modified hydroponics system with nebulization in the environment is necessary for rooting, for the obtention of a higher quality seedlingItem Agronomic performance, postharvest and indirect selection of Coffea arabica L. cultivars for high-temperature regions(Universidade Federal Rural de Pernambuco, 2020) Morello, Orlando Ferreira; Mingotte, Fábio Luíz Checchio; Leal, Fábio Tiraboschi; Coelho, Anderson Prates; Salvador Neto, Almir; Lemos, Leandro BorgesThis study aim was to evaluate the agronomic performance and the postharvest of small-sized Coffea Arabica cultivars and to indicate the best agronomic variable for indirect selecting genotypes for cultivation in high-temperature regions. The experiment was conducted during the 2014/15 harvest, employing the randomized blocks experimental design, with four replicates. The treatments consisted of 17 small-sized coffee cultivars. The evaluated attributes were growth, yield and postharvest of the coffee cultivars. Considering their morphological attributes, the cultivars Obatã IAC 1669-20, Catuaí Amarelo IAC 62, Obatã Amarelo IAC 4739 and IPR 99 were superior to the others. As for yield, the cultivars Obatã IAC 1669-20 (51.90 bags ha-1), Catuaí Amarelo IAC 62 (48.05 bags ha-1) and Catuaí Vermelho IAC 99 (47.63 bags ha-1) were superior. In the post-harvest evaluations, the cultivar Tupi IAC 125 (Tupi RN) had the best results. Due to their better agronomic performance, the cultivars Obatã IAC 1669-20 and Catuaí Amarelo IAC 62 are thus recommended for high-temperature regions. Plant height tends to be the best agronomic variable for indirect selecting more adapted cultivars for high-temperature regions.