Wheat and Barley Productive Response to Phosphorus and Potassium Applications on a Typical Mediterranean Vertisol

AUTHOR(S):

José Rato Nunes, Joaquim Cruz Mendes, José Gama, Luís Carlos Loures, António López-Piñeiro, David Peña Abades

TITLE

Wheat and Barley Productive Response to Phosphorus and Potassium Applications on a Typical Mediterranean Vertisol

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KEYWORDS

Vertisols, potassium fertilization, durum wheat, barley, yield components, grain yield, technological quality

ABSTRACT

With the aim of studying Triticum durum (wheat) and Hordeum vulgare (barley) response to potassium fertilization on a Vertisol, a field trial was developed involving two doses of Potassium (K) interacting with two doses of Phosphorus (P), considering two different timings of application – solid and foliar solution during tillering and grain filling. Yield components, grain yield and technological parameters were evaluated for the wheat variety - Marialva and for the malting barley variety - Quench. According to the obtained results it was possible to observe a slight trend on yield reduction when the foliar potassium solution was applied. However, the observed differences are not statistically significant. In conclusion, it is possible to say that there was no significant crop response to potassium fertilization doses or timing of application.

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Cite this paper

José Rato Nunes, Joaquim Cruz Mendes, José Gama, Luís Carlos Loures, António López-Piñeiro, David Peña Abades. (2017) Wheat and Barley Productive Response to Phosphorus and Potassium Applications on a Typical Mediterranean Vertisol. International Journal of Agricultural Science, 2, 46-50