SciELO - Scientific Electronic Library Online

 
vol.35 issue12Evaluation of growth and postharvest ripening of shinsseiki pearsIsoenzymes and dry matter content in wild potato author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Pesquisa Agropecuária Brasileira

Print version ISSN 0100-204X

Abstract

BRASIL, EDILSON CARVALHO; OEIRAS, ANTÔNIO HENRIQUE LOPES; MENEZES, ANTÔNIO JOSÉ ELIAS AMORIM DE  and  VELOSO, CARLOS ALBERTO COSTA. Development and production of fruits of banana plant as a response to nitrogen and potassium fertilization. Pesq. agropec. bras. [online]. 2000, vol.35, n.12, pp. 2407-2414. ISSN 0100-204X.  http://dx.doi.org/10.1590/S0100-204X2000001200011.

The effect of the N and K fertilization on the development and production of the banana plant (Musa spp.), cv. Pioneira, was evaluated in an experiment carried out in Capitão Poço county, Pará State, Brazil, in a Yellow Latosol, using a randomized blocks design, in factorial arrangement of 4x4. The treatments were: 0, 80, 160 and 240 g of N per plant per year; 0, 150, 300 and 450 g of K2O per plant per year. Urea and potassium chloride were used as nutrient sources. The results of plant growth showed that there was effect of N on circumference of pseudostem and plant height. The quadratic model was better adjusted to all the variables. The results of production of the second cycle indicated that K increased quadratically the bunch weight, hands weight per bunch and average weight of hands, with production increments of 73, 76 and 39%, respectively, in comparison to the treatment without potassium. The nitrogen application promoted a linear increase of the weight of bunch and hands per bunch, with increments of 32 and 30%, respectively, proportionate by the highest level of N, in relation to the treatment without this nutrient. During the third production cycle only K application influenced the weights of bunch, of hands per bunch and average weight of hands, with increments of 39, 40% and 26%, respectively.

Keywords : Musa; mineral nutrients; nutrient uptake; productivity.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese