THE EFFICIENCY OF STATIC RADIAL FLOW DRIER AND SPEED INTERMITTENT DRIER: EFFECTS IN THE BEAN SEEDS QUALITY
DIRK CLAUDIO AHRENS E MARCO ANTÔNIO LOLLATO
Drying is one of the bean seed production limitation and few studies have been done. Quality of IAPAR 14 brown bean seeds were evaluated before, during and after the artificial drying. A speed intermittent drier with cross air flow (50-55°C air temperature) and static drier with radial flow (35°C) were tested in January 1994, at Instituto Agronômico do Paraná (IAPAR), Ponta Grossa, Paraná, Brazil. The seeds had an initial moisture content of 25-30% and were evaluated by physical (moisture content, purity, mechanical damage by tetrazolium) and physiological (germination, accelerated aging, field emergence and tetrazolium) analysis, storaged by three and nine months. The main conclusions were: a) it was possible to dry bean seeds from 25% to 13% moisture content using the intermittent drier; b) the static bin drier was not efficient to dry bean seeds with high moisture content; c) the speed intermittent drier was more efficiency than the static drier; d) despite the reduction of the bean seed physiological quality when using the intermittent drier, it was possible to use it for planting after they were stored for nine months.
Patrocinadores