TY - JOUR AU - Bee-Rodríguez, Domingo AU - Ayala, Alejandro PY - 1977/10/01 Y2 - 2024/03/28 TI - Interaction of Pratylenchus zeae with Four Soil Fungi on Sorghum JF - The Journal of Agriculture of the University of Puerto Rico JA - JAUPR VL - 61 IS - 4 SE - Articles DO - 10.46429/jaupr.v61i4.10415 UR - https://revistas.upr.edu/index.php/jaupr/article/view/10415 SP - AB - <p>In a greenhouse experiment, a population consisting of 1,500 <em>Pratylenchus zeae</em> in 20-cm pots were pathogenic on sorghum, and suppressed top and root growth. Pronounced necrosis of the roots resulted. Top growth was retarded by combinations of <em>P. zeae-Curvularia</em> spp., <em>P. zeae-Fusarium moniliforme</em>, <em>P. zeae-Rhizoctonia solani</em>, and <em>P. zeae-Macrophomina</em> sp., and by <em>F. moniliforme</em> and <em>R. solani</em>, alone. All nematode-fungi combinations and all fungi alone suppressed root growth. The combination <em>P. zeae-Curvularia</em> spp. produced most damage. <em>P. zeae-R. solani, Curvularia</em> spp., and <em>F. moniliforme</em> produced severe necrosis of sorghum roots. An initial inoculum of 750 <em>P. zeae</em> in 20-cm pots was not pathogenic on sorghum in a second experiment. Only the combination of <em>P. zeae-F. moniliforme</em> affected the fresh root weights; dry root weights were retarded significantly by<em> P. zeae-F. moniliforme</em> and by <em>F. moniliforme</em>, alone. The intensity of necrosis also varied with the different inocula.</p> ER -