Frequency and severity of soybean diseases in the States of Rio Grande do Sul and Santa Catarina.
Pseudomonas glycinea, Septoria glycines and Colletotrichum dematium var. truncata [C. truncatum] were recorded in 73, 65 and 57% of the fields, respectively. Other important diseases were caused by Rhizoctonia solani (often associated with Fusarium oxysporum), Peronospora manshurica and Cercospora sojina. Pathogens noted less frequently were Diaporthe phaseolorum, Macrophomina phaseolina and Xanthomonas phaseoli var. sojense.<new para>ADDITIONAL ABSTRACT:<new para>Analyses of soil and roots of soybean in Brazil at the time of flowering revealed the presence of the following genera of nematodes: Meloidogyne, Pratylenchus, Helicotylenchus, Hoplolaimus, Tylenchorhynchus, Trichodorus, Xiphinema, Criconemoides, Scutellonema and Longidorus. [From English summary.]