01507naa a2200169 a 450000100080000000500110000800800410001902200140006010000180007424501120009226000090020452010210021365000130123465000140124770000210126177300550128214580642018-04-12       2007    bl uuuu     u00u1 u    #d  a1018-18061 aCASTRO, C. de  aCompatibility of herbicides with boron fertilizers for weed desiccation and mineral nutrition of sunflower.  c2007  aTwo experiments were carried out to evaluate the efficiency of weed control by herbicides, applied singly or in combination with boron (B), and the response of sunflower ( Helianthus annuus L.) to fertilization with this micro-nutrient. Herbicides were applied to the plots whose sub-plots involved the presence or absence of 2 kg ha-1 of B, from two different sources (H3BO3-boric acid and Na2B8O13·4H2O - sodium borate) mixed with the herbicides. The combinations of the herbicides and boron, referentially from the source H3BO3, efficiently controlled the following weeds: wild poinsettia (Euphorbia heterophylla ), hairy beggarsticks ( Bidens subalternans ), and alexandergrass (Brachiaria plantaginea). The application of B in association with herbicides increased the content of this micronutrient in the soil and consequently in sunflower leaves. The combined application of herbicides and boric acid appears to be perfectly suitable for controlling weeds while increasing the mineral nutrition of sunflower.  aGirassol  aHerbicida1 aBRIGHENTI, A. M.  tHelia, Novi Sadgv. 30, n. 47, p. 1-14, Dec. 2007.