Resumo

CAMPOS-GARCIA, Tonatiu; SANCHEZ-GARCIA, Prometeo; ALCANTAR-GONZALEZ, Gabriel  e  CALDERON-ZAVALA, Guillermo. Agronomic and nutritional strawberry response to nutrient solutions with different ratio NH ₄ ⁺ /NO ₃ ^- in the vegetative stage. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.3, pp.599-606. ISSN 2007-0934.

The aim of this research was to determine the optimal ratio of NH4 +/NO3 - in the nutrient solution that favors the agronomic and nutritional behavior of strawberry cv. festival in an intensive production system during the vegetative- f lowering stage. The nutrient solutions (SN) were evaluated with different relationship NH4 +/NO3: 100/0, 75/25, 50/50, 25/75 and 0/100. At 108 days after initiated treatment (ddit) the following parameters were evaluated in strawberry plants leaf area (AF), content of fresh material (MF) and dry matter (DM) accumulation of N-NH4 y N-NO3 (AN) in the strawberry plants. In the vegetative-f lowering stage, the SN with a NH4 +/NO2 - ratio equal to 100/0 significantly increased AF, MF, MS and AN in strawberry plants cv. festival, compared with other treatments. Therefore, the addition of ammonium as sole N source for the production of strawberry during the vegetative stage is suggested.

Palavras-chave : Fragaria x ananassa Duch.; accumulation of N; coir.

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