02191naa a2200325 a 450000100080000000500110000800800410001902400310006010000190009124501230011026000090023352013440024265000100158665000090159665000120160565000100161765000120162765000160163965000100165565000140166565000170167965000230169665000090171965000100172865000220173865000130176065000100177365300190178377300630180212099062022-04-29       2002    bl uuuu     u00u1 u    #d7 a10.1081/PLN-1200033852DOI1 aFAGERIA, N. K.  aMicronutrients' influence on root growth of upland rice, common bean, corn, wheat, and soybean.h[electronic resource]  c2002  aThe root is one of the most important plant organs due to its involvement in absorption of water and nutrients. The objective of this study was to determine if the application of micronutrients zinc (Zn), boron (B), and copper (Cu) could improve root growth of upland rice (Oryza sativa L.), common bean (Phaseolus vulgaris L.), corn (Zea mays L.), wheat (Triticum aestivum L.), and soybean (Glycine max L. Merr.) grown on an Oxisol. Zinc application did not have a significant effect on root dry weight of corn, wheat, and soybean. However, root dry weight of upland rice was significantly improved by the application of Zn. Zinc application had a significant negative effect on dry weight of common bean root. Boron significantly improved root dry weight of common bean and wheat. However, it had a significant negative effect on root dry weight of upland rice and corn. Root dry weight of soybean was not influenced by B application. Application of copper significantly increased root dry weight of upland rice and wheat. However, root dry weight of corn and soybean was significantly reduced with the application of copper. There was no significant influence of copper fertilization on the root dry weight of common bean. The root length and shoot-root ratio varied from crop species to species under different levels of Zn, B, and Cu.  aArroz  aBoro  aCerrado  aCobre  aFeijão  aGlycine Max  aMilho  aNutriente  aOryza Sativa  aPhaseolus Vulgaris  aSoja  aTrigo  aTriticum Aestivum  aZea Mays  aZinco  aMicronutriente  tJournal of Plant Nutritiongv. 25, n. 3, p. 613-622, 2002.