Initial development of white oat and jack bean submitted to growing densities of soil

Tiago Zoz; Rubens Fey; Fábio Steiner; Luciana Costa; Deise Dalazen Castagnara; Ana Maria Conte e Castro

Resumo

So much white oat as jack bean are used as plants of coverage principally in notillage systems (SSD). Depending of the quality of driving this system the soil can present different levels of compression. This study objective evaluate the effect of soil compaction in the initial development of white oat and jack bean. Two experiments were installed in the core of experimental stations of the State University of West of Paraná – UNIOESTE, Marechal Cândido Rondon/PR, in greenhouse in the period of May-June 2007. The design experimental adopted was blocks randomized with five treatments and four repetitions. The treatments
consist of five densities of soil (1,2; 1,4; 1,6; 1,8 e 2,0 Mg m-3) for each culture. At 40 days after emergence (DAE), were realized assessments of plant height, stem diameter, number of leaves, dry mass of aerial part, dry mass of roots and root length. The white oat and jack bean showed sensitivity to the increase of density of the soil, reducing the length and mass of root. The plants of coverage studied showed low capacity of breaking the compacted soil layer.