Autotoxicity in Vegetables and Ornamentals and Its Control

Abstract

This article discusses autotoxicity in vegetable and ornamental plants in hydroponics, its occurrence, autotoxic substances isolation and phytotoxicity evaluation, and control methods. Autotoxicity is a phenomenon of intraspecific allelopathy that occur when a plant species releases chem. substances which inhibit or delay germination and growth of the same plant species. Intensive and continuous culture of vegetable crops on the same land for several years causes replanting injuries like outbreak of disease and insect pest, exhaustion of soil fertility, development of chem. interference (allelopathy) leading to growth and yield redn. [on SciFinder(R)]