Características químicas e fitotoxicidade de exsudatos radiculares de plantas de cobertura

This work aimed to evaluate the influence of root exudates from cover crops: Raphanus sativus, Avena strigosa and Vicia villosa on germination development Zea mays, Amaranthus spinosus Ipomoea grandifolia. The tests performed were gas chromatography with mass spectrometry, rate, vigor, protrusion dry matter. Aliphatic amino acids (Alanine, Glycine, Isoleucine, Leucine, Proline, Serine, Threonine Valine) identified as well phenylalanine cinnamic acid. exudate crops tested affects negatively a number parameters. plants that had greatest negative effect target villosa. sativus did not differ control group in maize, it inhibited germination, vigor growth