01982naa a2200301 a 450000100080000000500110000800800410001902400570006010000220011724500780013926000090021750001010022652010700032765000110139765000160140865000260142465000120145065000300146265000100149265000120150265000150151470000260152970000210155570000160157670000250159270000170161777300460163421218522020-04-27       2018    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1590/s0100-835820183601000802DOI1 aGONÇALVES, G. S.  aPeriods of weed interference on orange tree crops.h[electronic resource]  c2018  aTítulo em Português: Períodos de interferência de plantas daninhas na cultura da laranjeira.  aCurrent orange tree cultivation practices in the Brazilian State of Amazonas present several production problems, being the inadequate weed management the most important one, and significantly affecting fruit productivity. However, if weeds are managed properly, their coexistence with orange cultivars does not affect the fruit yield of orange trees. Thus, the objective of this research was to identify the period of longer weed interference in orange production. The treatments were conducted during the 2013 and 2014 harvests as follows: one control treatment with no coexistence of weeds and crop throughout the growing season; and six periods of coexistence (October to January, February to May, June to September, October to May, October to January, June to September, and February to September). The coexistence of weeds from October to May with orange trees increased the fall of unripe fruits and reduced the yield and the number of oranges per plant. Therefore, this period was considered as the most critical one for the control of weeds in orange trees  aCitrus  aFruit yield  aImperfect competition  aOranges  aCompetição de Variedade  aFruto  aLaranja  aRendimento1 aCARVALHO, J. E. B. de1 aGARCIA, M. V. B.1 aGAMA, L. A.1 aAZEVEDO, C. L. L. L.1 aSILVA, J. F.  tPlanta Daninhagv. 36, e018179810A, 2018.