1. DOWNY MILDEW OF BAJRA

8. ROOT KNOT OF MULBERRY

9.  Root knot nematodes are distributed worldwide and cause economic
damages to many crops.
Causative agent: Meloidogyne incognita (Kofoid and White).
 First reported by Narayanan et al 1966 on mulberry from india.
 It belongs to
class- nematode
order- tylenchida
family- heteroderidae
 Common in sandy type of soils under irrigated conditions.
Symptoms:
Affected plants show stunted growth
Marginal necrosis
Yellowing of leaves
Formation of characteristic knots/galls on the root
As a result of poor plant growth, about 10-12% leaf yield is
lost in addition to affecting the leaf quality

12. CONTROL MEASURES:
 Deep digging/ ploughing
 Intercropping of nematicidal plants
 Use of organic oil cakes as soil amendments
 Application of nematicides
 Mutching of green leaves
Mineral deficiency diseases
 Nitrogen deficiency: slow and week growth of plant with less branching/vigor,
chlorosis and stunted root growth.
 Potassium deficiency: marginal scorching of leaves in younger stage, non juicy
and necrotic.
 Phosphorus deficiency: intra- veinal chlorosis of older leaves, marginal
necrosis and defoliation.
 Magnesium deficiency: chlorotic and necrotic spots on leaves.
 Calcium deficiency: defoliation of young leaves with necrosis along the veins.
 Sulphur deficiency: slight necrosis and stunted plant growth.
 Zinc deficiency: interveinal chlorosis& yellowish white spots on leaves.

14. THANK YOU
BY NANDHINI