The influence of chitin-urea amendments applied to an organic soil on a Meloidogyne hapla population and on the growth of greenhouse tomato

作者：G. Bélair, Nicolas Tremblay · 发表于：Phytoprotection · 年份：2005 · DOI：10.7202/706087ar · 被引用次数：21 · 研究领域：Nematode management and characterization studies、Banana Cultivation and Research、Legume Nitrogen Fixing Symbiosis

This experiment was conducted under greenhouse conditions to evaluate the efficiency of chitin-urea amendments to an organic soil against a Quebec population of the northern root-knot nematode ( Meloidogyne hapla ) and to assess the pathogenicity of this population on tomato ( Lycopersicon esculentum ). Chitin-urea amendments at 0.2 and 0.4% (vol:vol) were ineffective in reducing the preplant nematode populations. The final M. hapla egg populations were significantly increased in chitin-urea amended soils, and a signifiant positive dosage effect was recorded. Shoot growth of tomato plants was significantly reduced by M. hapla but was increased by chitin-urea. At harvest, fruit weights were neither affected by M. hapla nor by chitin-urea amendments. The final M. hapla egg population was linked to lower N and P levels, and to higher Ca levels in leaf tissues.