Yield gains of coffee plants from phosphorus fertilization may not be generalized for high density planting

Revista Brasileira de Ciência do Solo

Samuel Vasconcelos Valadares²  Júlio César Lima Neves¹  Roberto Ferreira Novais¹  Gustavo Nogueira Guedes Pereira Rosa¹  Hermínia Emília Prieto Martinez¹  Víctor Hugo Alvarez V.¹ 

[1] ,UFV Soil Department Viçosa MG ,Brazil

关键词: Coffea arabica;    mineral nutrition;    biennial cycle;    Coffea arabica;    nutrição mineral;    bienalidade;   

DOI  :  10.1590/S0100-06832014000300022

来源: SciELO

【 摘 要 】

Inconclusive responses of the adult coffee plant to phosphorus fertilization have been reported in the literature, especially when dealing with application of this nutrient in high density planting systems. Thus, this study was carried out for the purpose of assessing the response of adult coffee plants at high planting density in full production (in regard to yield and their biennial cycle/stability) to the addition of different sources and application rates of P in the Zona da Mata region of Minas Gerais, Brazil. The experiment with coffee plants of the Catucaí Amarelo 6/30 variety was carried out over four growing seasons. Treatments were arranged in a full factorial design [(4 × 3) + 1] consisting of four P sources (monoammonium phosphate, simple superphosphate, natural reactive rock phosphate from Algeria (Djebel-Onk), and FH 550®), three P rates (100, 200, and 400 kg ha-1 year-1 of P2O5), and an additional treatment without application of the nutrient (0 kg ha-¹ year-¹). A randomized block experimental design was used with three replicates. The four seasons were evaluated as subplots in a split plot experiment. The P contents in soil and leaves increased with increased rates of P application. However, there was no effect from P application on the yield and its biennial cycle/stability regardless of the source used over the four seasons assessed.

【 授权许可】

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