Resumo

VILLA, Martin Rodrigo; RODRIGUEZ, Luis Ernesto  e  GOMEZ, Manuel Iván. Effect of edaphic and foliar management of manganese on the yield of the Criolla Colombia cultivar. Agron. colomb. [online]. 2011, vol.29, n.3, pp.447-454. ISSN 0120-9965.

This research was conducted in the district of El Rosal (Cundinamarca) in a Typic Hapludand soil and sought to evaluate the effect of foliar and soil applications of different doses of manganese (Mn) (0, 1, 2 and 3 kg ha^-1) on the potential yield of the Criolla Colombia cultivar. Sulphate Mn granules (Microman ®) and chelated Mn (MF-Mn®) were used as sources. We used a split-plot, randomized complete block design with four replications per treatment. The variables studied were: weight and number of tubers per category. The results show that the application of both soil and foliar Mn exerts a positive response in the criolla potato, with increases of 52% in commercial yield and more than 100% in first category yield with respect to traditional fertilization. The optimal dose is between 1.5 to 2.0 kg ha^-1 for both soil and foliar Mn, with an economic optimum between 0.8 to 1 kg ha^-1 Mn, edaphically applied. The results showed no differences between the techniques of foliar and soil application for yield potential, but did for number of tubers

Palavras-chave : diploid potato; foliar and soil fertilization; yield; tubers.

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