Coffee Science_v.16, 2021
URI permanente para esta coleçãohttps://thoth.dti.ufv.br/handle/123456789/12727
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Item Analysis of arabica coffee productivity due to shading, pruning, and coffee pulp-husk organic fertilizers treatments(Editora UFLA, 2021) Karim, Abubakar; Hifnalisa, Hifnalisa; Manfarizah, ManfarizahArabica coffee productivity can be increased through improved cultivation techniques. This research aims to analyze Arabica coffee production to treat shad ing, pruning, and coffee pulp-husk organic fertilizer application. The research was carried out in two stages, in the first stage a field survey was conducted to determine the relatively uniform land and plant characteristics, while in the second stage was the application of coffee pulp-husk organic fertilizer and pruning of shaded and non-shaded coffee plants by using farmer’s method and the recommended methods by the authors. The application of coffee pulp-husk or ganic fertilizer consists of 0, 2.50, 5.00, and 7.50 kg tree-1, which is equivalent to 0, 4, 8, and 12 tons ha-1 respectively. This research was arranged in a split-plot design, with shades placed in the main plot, while pruning and the application of coffee pulp-husk organic fertilizer in the subplots. The variables observed were the number of redcherries tree-1, greenbean (dry bean) production, and rendement (yield) production at 14% moisture content. Furthermore, the best effect and treatment were determined using variance analysis and the least significant difference (LSD). The result showed that shade only affected rende ment production at 14% moisture content, coffee with shade is better than no shade, pruning affected the number of redcherries and greenbean production. Furthermore, the recommended pruning was better than farmer pruning, while coffee pulp-husk organic fertilizer affected all observed variables. Therefore, the best dose is 7.50 kg tree-1 (12 ton ha-1) because the treatment combination (SxPxF) affected only greenbean production.Item Water retainer polymer in coffee plants deployment under different levels of irrigation(Editora UFLA, 2021) Resende, Thales Barcelos; Souza, Victor Hugo Silva; Castanheira, Dalyse Toledo; Carvalho, Milene Alves de Figueiredo; Guimarães, Rubens JoséThe use of water-retaining polymers may be a feasible alternative in regions with low water availability, as they has enhance the performance of coffee plants with more favorable anatomical characteristics to make physiological processes more efficient. However, the advantages of such use have been scarcely reported. Here, we studied the feasibility of using a water-retaining polymer to optimize irrigation water use during the establishment of a coffee plantation. A randomized block design was used in a factorial scheme (4 × 2) with three replications for a total of 24 experimental plots, each consisting of four pots, with one plant per unit. The experiment was installed in a greenhouse at the Coffee Science Department of the Universidade Federal de Lavras, Minas Gerais, Brazil, with four levels of irrigation (25%, 50%, 75%, and 100% of soil water at field capacity), with or without addition of the water-retaining polymer. Growth variables evaluated included: plant height, stem diameter, number of leaves, shoot and root dry weights, root volume and area. Additionally, gas exchange, leaf water potential, and leaf anatomy were analyzed. The use of water-retaining polymer during establishment of the coffee plantation ensured sufficient water supply, thus guaranteeing plant anatomical and physiological functionality and, consequently, a healthy, vigorous growth.