Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/41923
Title: Efeito de parcelamento da fertirrigação com N E K E salinidade do solo no crescimento inicial de cultivares de cafeeiro
Other Titles: Effects of N and K fertirrigation fractional and soil salinity on coffee varieties growth
Keywords: Café - Irrigação
Café - Fertilização
Salinidade do solo
Condutividade elétrica
Coffee - Irrigation
Coffee - Fertilization
Soil salinity
Electric conductivity
Issue Date: Jun-2009
Publisher: Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP
Citation: FARIA, F. H. de S. et al. Efeito de parcelamento da fertirrigação com N e K e salinidade do solo no crescimento inicial de cultivares de cafeeiro. Irriga, Botucatu, v. 14, n. 2, p. 145-157, abr./jun. 2009.
Abstract: Irrigated coffee production has expanded because of the excellent results of techniques such as fertigation. It can provide rapid initial growth; however, the salinity of excessive nutrient solution can limit plant growth and cause plant mortality. N and K are mainly used in covering layers and their recommended doses are 4 gplant-1 month-1. This study aimed to assess the initial growth of 'catuaí' and 'catucaí' coffee plants and soil salinity resulting from fertigation with N (urea) and K (KCl) according to the indicated doses and fractionated every 2, 4, 6 and 8 weeks. The experiment was carried out in a greenhouse of UFLA/DEG, Lavras-MG, Brazil, where 13-l vases were irrigated under soil water tensions between 20 and 30 kpa during 24 weeks. The following were evaluated: CE fertilizer solution and CE soil solution, plant height and shoot diameter after 8-week cycles. Results indicated that the used fertilizer dose was excessive, causing plant death after 2 cycles, except for the control. These varieties resisted soil salinity (CEea = 1.2 ds m-1). Despite the CE of the applied fertilizer solution be high, the results were higher than those of similar studies with NaCl solution to lower salinity levels.
URI: http://repositorio.ufla.br/jspui/handle/1/41923
Appears in Collections:DEG - Artigos publicados em periódicos



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