Produtividade de híbridos de milho em função da velocidade de semeadura Corn hibrids yield as a function of seeding speed
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Abstract
The present work was lead in the experimental area of the Laboratory of Machines and Agricultural Mechanization of the São Paulo State University, Jaboticabal, Brazil, in a soil classified as Haplustox, in conventional tillage. It had been evaluated the development and the components of production of two hybrids of corn (DKB 390, simple and DKB 435, double) in function of three speeds of the set tractor-seeder-fertilizer (5.4; 6.8 and 9.8 km h-1), totalizing six treatments with four repetitions in a randomized block-type design, factorial 2 x 3. The results had evidenced that the increase of the speed of the tractor-seeder-fertilizer set, reduced the productivity of grains for the simple hybrid and did not interfered with the productivity of the double hybrid. But in the lower speed the simple hybrid presented greater productivity of grains when compared with the double hybrid. The increase of the speed in the operation of seeding reduced the percentage of normal spacing between the seeds, independent of the studied hybrid.
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mello2007produtividadeengenharia
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| Authors | Mello, Adilson J. R.;Furlani, Carlos E. A.;Silva, Rouverson P.;Lopes, Afonso;Borsatto, Edinan A.; |
| Journal | engenharia agrícola |
| Year | 2007 |
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