Teores de macronutrientes em plantas de pimentão enxertadas sob fertirrigação

• Autor(a) principal: Silva, Ewerton Gasparetto da [UNESP]
• Data de Publicação: 2013
• Outros Autores: Takata, William Hiroshi Suekane [UNESP], Oliveira Júnior, Manoel Xavier de, Silva, Jéssica Danila da [UNESP], Goto, Rumy [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.15809/irriga.2013v18n4p675; http://hdl.handle.net/11449/137500
• topic: Nutrient concentration; Drip; Protected environment; Capsicum annuum L.; Concentração de nutrientes; Ambiente protegido gotejamento; Capsicum annuum L.

This study aimed at determining the levels of macronutrients (N, P, K, Ca, Mg and S) in grafted plants by contact methods such as bevel, cleft grafting by full rift and approach, as compared to non grafted plants. Analyses were performed in different parts of the plants under fertigation in a greenhouse. The hybrid and rootstock were AF 7125 and AF 8253, respectively. The nutrients were supplied via fertigation during the 150-day cycle. The experiment was carried out at the Teaching, Research and Production Farm in São Manuel city, SP which belongs to FCA-UNESP Campus in Botucatu city/SP. A total of 4 treatments and 5 replications were used. Each plot consisted of 12 plants. Chemical analyses were performed in one plant per plot at 35, 85, 112 and 143 days after transplantation to determine nutrient concentrations. The results showed that the macronutrient concentrations in a decreasing sequence in the vegetative parts (leaf + stem) were as follows: K > N > Ca > Mg > S > P; and in the fruits: K > N > P > S > Mg > Ca. Macronutrient concentrations were similar among grafted plants as compared to ungrafted plants, and the rootstock may have influenced absorption and translocation of minerals in grafted plants.