Studies on the effect of plant oils and biofungicides on seed borne pathogens of chilli and brinjal seeds
Loading...
Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
CCSHAU
Abstract
Chilli and brinjal are important spice and vegetable crops in India and known to be suffered mainly
by Colletotrichum capsici and Phomopsis vexans respectively. These pathogens cause damping off at
seedling stage and fruit rot at maturity stage affecting the crop yield and marketability of the produce. Seed
treatment with carbendazim or other chemical fungicides for control of these important diseases are already
in vogue. However, use of these chemicals lead to residual toxicity, induced resistance to pathogens and
environmental pollution. Hence, an attempt was made to identify eco-friendly natural measures like plant
oils or biofungicides in place of carbendazim to control these diseases.
Results revealed that the mycoflora including Colletotrichum capsici and Phomopsis vexans
were controlled with the use of carbendazim (2 g kg-1 seed) and also equally with the neem oil
treatment @ 5 ml kg-1 seed or Trichoderma viride @10 g kg-1 seed. Further, seedling parameters like
seed germination, seedling growth, seedling vigour and disease control were high in infected seed
treated with plant oils or biofungicides and were comparable to that of carbendazim treatment. Among
the plant oils, neem oil was relatively better than carbendazim in controlling disease and improving the
seedling parameters. Similarly, among the biofungicides, Trichoderma viride was better over the
Trichoderma asperellum, Pseudomonas fluorescens and their combinations to control the disease and
to enhance the seedling vigour. Hence, seed treatment with neem oil @ 5 ml kg-1 seed or Trichoderma
viride @10 g kg-1 seed can be effectively used in place of carbendazim (2 g kg-1 seed) for chilli and
brinjal to control diseases and also to achieve higher seedling vigour which leads to higher crop
productivity.
Description
Keywords
null