02240naa a2200229 a 450000100080000000500110000800800410001902400500006010000190011024501150012926000090024452015780025365000130183165000270184465300150187165300110188670000200189770000180191770000160193570000150195177300440196621309012021-03-25       2021    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.3390/agronomy110304532DOI1 aMARTINS, M. B.  aAeschynomene spp. Identification and Weed Management in Rice Fields in Southern Brazil.h[electronic resource]  c2021  aThe plant genus Aeschynomene (Fabaceae, Papilionoideae) is composed of approximately 180 species, of which 84 are distributed through the American continent and 49 occur in Brazil [1,2]. These plants are herbaceous annuals that develop as small to true bushes with peltate stipules, papilionaceous flowers, and articulate loments united by septa [3]. In 2002, a previous survey carried out in the Rio Grande do Sul (RS) state, the southernmost state of Brazil, reported the presence of nine species belonging to this genus: A. denticulata, A. elegans, A. falcata, A. fructipendulata, A. histrix, A. indica, A. montevidensis, A. selloi, and A. sensitiva, which are regionally known as ?angiquinho? in Brazilian Portuguese and jointvetch in English [4]. Due to its semi-aquatic habit, some jointvetch species are well-suited to the conditions of irrigated rice cultivation, to the point that they are the crop?s main broadleaf weed and the third most likely to escape chemical control, behind only weedy-rice and species of Echinochloa [5]. Despite not germinating under flooded conditions [6,7], once established, this weed affects crop productivity by competing for resources, as well as indirectly by hampering harvest operations and diminishing grain and seed quality [8?11]. Differentiating between species of Aeschynomene in rice paddies is extremely difficult. This is due to the similarity of morphological characteristics between the species and because no survey has been carried out to date concerning the occurrence and description of Aeschynomene in rice fields.  aLowlands  aSpecies identification  aJointvetch  aSurvey1 aAGOSTINETTO, D.1 aFOGLIATTO, S.1 aVIDOTTO, F.1 aANDRES, A.  tAgronomygv. 11, n. 453, p. 1-17, 2021.