Losses in germination mechanized harvest of corn grown in small spacing and conventional

Danilo Roberto Loureiro, Haroldo Carlos Fernandes, Mauri Martins Teixeira, Daniel Mariano Leite, Lara Santana Fernandes

Abstract


The objective of this study was to evaluate the germination potential losses due to the mechanized harvest of corn grown with row spacing of conventional seeding (0.90 m) and low (0.45m) under different travel speeds of harvester thresher and openings in the system. The cultivar used was the DKB 747. The experimental design was randomized blocks in scheme 2 x 3 x 3 with three replications. The treatments were two row spacing of culture (0.45 and 0.90 m), three harvester travel speeds (1.8, 3.5 and 4.1km h-1) and three openings between the concave and threshing drum (25, 30 and 35 mm). The average germination of threshed manually planted with planting spacing of 0.45 and 0.90 m, was 78.45 and 74.12% respectively. The germination of corn seeds is not influenced by different row spacing plantings. The smallest gap between the cylinder and concave thresher results in lower levels of germination. The speed of the harvester 1.8 km h-1 used in planting spacing of 0.9 m resulting in lower germination of corn.


Keywords


Germination; Agricultural machinery; Harvest; Zea mays L.



DOI: http://dx.doi.org/10.5433/1679-0359.2012v33n4p1251

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional