SciELO - Scientific Electronic Library Online

vol.16 issue4Phosphorus and irrigation application on the absorption and exportation of nutrients by cottonProduction and biometry of green corn irrigated with saline water under leaching fractions author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista Brasileira de Engenharia Agrícola e Ambiental

Print version ISSN 1415-4366


CABRAL, Carlos E. A. et al. Soil compaction and primary macronutrients in Brachiaria brizantha cv. Piatã e Panicum maximum cv. Mombaça. Rev. bras. eng. agríc. ambient. [online]. 2012, vol.16, n.4, pp.362-367. ISSN 1415-4366.

The primary macronutrients have an important role in the forage fertilization, depending on their contribution to the production cost. This paper aimed to evaluate the effects of soil compaction on the concentration of primary macronutrients present in diagnostic leaves of Piatã and Mombaça grasses. The experiment was conducted in a greenhouse with a randomized statistical design, consisting of eight treatments and three replications in 2 x 4, factorial scheme, with two grases (Piatã grass and Mombaça) and four soil densities (1.0, 1.2 , 1.4 and 1.6 Mg m-3). Two harvest of shoots were made, the first 42 days after the plant thinning, and the second 46 days after the first cutting. In the first growing period, the soil compaction interfere with the absorption of nitrogen and phosphorus, while in the second growing period there is a limitation in the absorption of nitrogen and potassium. Nitrogen is the primary macronutrient most limited by soil compaction.

Keywords : Mombaça grass; Piatã grass; soil bulk density; diagnostic leaf.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License