Effects of sugarcane straw allelochemicals on growth and physiology of crops and weeds

SAMPIETRO, D.A.; SGARIGLIA, M.A.; SOBERÓN, J.R.; VATTUONE, M.A.

ALLELOPATHY JOURNAL

International Allelopathy Foundation

Lugar: Hisar (India); Año: 2007 vol. 19 p. 351 - 360

0971-4693

        The phytotoxic activity of the compounds isolated from sugarcane straw was evaluated on seedling growth of crops and weeds (Brassica campestris, Lactuca sativa, Amaranthus quitensis, Bidens subalternans and Sida rhombifolia). Three compounds were identified: ferulic (FA), syringic (SA) and vanillic (VA) acids. VA drastically inhibited the mitotic index, while, SA increased the cell division. Vanillic acid inhibited the root branching, while, FA and SA stimulated the proliferation of secondary roots. As the phenolic acids were often found concentrated in top soil layers under sugarcane straw, more studies are needed to establish their participation under field conditions.