01970nam a2200217 a 450000100080000000500110000800800410001910000200006024500940008026002360017452011730041065000260158365000250160965000130163465000140164765000090166170000230167070000200169370000220171370000170173520092392015-02-20       2014    bl uuuu     u00u1 u    #d1 aABREU, C. A. de  aEfficiency of the fused magnesium potassium phosphate for soybean.h[electronic resource]  aIn: WORLD FERTILIZER CONGRESS OF CIEC, 16., 2014, Rio de Janeiro. Technological innovation for a sustainable tropical agriculture: proceedings. Rio de Janeiro: International Scientific Centre of Fertilizers, 2014. p. 305-307.c2014  aAbstract: The use of ground natural rocks (in natura) containing K was evaluated for the cultivation of rice (NEPTUNE et al., 1980), corn (Siqueira et al., 1985) and more recently in corn, soybeans and mil- let (Resende et al., 2006), whose agronomic results were not satisfactory. However, when the potassic rock is fused at high temperatures and calcare- ous is added, you get the product known as fused magnesium potassium phosphate (TK) with K availability increased. In a study to evaluate the fused magnesi- um potassium phosphate in corn, there was an in- crease in the production of dry matter and higher K accumulation accumulation in plants (FAQUIN et al., 1987) mass. High agronomic efficiency of this source was also observed for Marandu-grass with equivalent or su- perior results when compared to KCI. No study, however, was con- ducted to assess the efficacy of fused magnesium potassium phosphate in providing K for soybean, which is recognized for its strategic importance in the Brazilian agribusiness. In light of the above, this study aimed to assess the efficacy of the fused magnesium potas- sium phosphate as a source of potassium for soy- bean.  aPotassium fertilizers  aPotassium phosphates  aSoybeans  aPotássio  aSoja1 aSOUZA, C. P. C. de1 aVIARO, A. C. K.1 aANDRADE, C. A. de1 aABREU, M. F.