Limited work on
disease and insect pest management
was taken up in the project. However,
recommendations for management of important diseases and
insect pests are as follows:
| Crop |
Disease |
Etiology |
Findings &
Recommendations |
||
|
Medicinal
Crops |
|||||
|
Opium
poppy (Papaver somniferum) |
Downy
mildew |
Peronospora
arborescens |
Seed
treatment with metalaxyl and four sprays of metalaxyl @ 0.2%
at 35, 55, 75 and 95 days after sowing found most effective in
reducing primary and secondary disease incidence. It also
increased latex yield (26.7%) and seed yield (24.7%) over
control. Jawahar
Opium poppy - 540 having some resistance against the disease
has been recommended for M.P. |
||
|
Senna
(Cassia angustifolia) |
Leaf
spot |
Alternaria
alternata |
Spraying
of Bordeaux mixture, benomyl, captafol and copper oxy chloride
is recommended. |
||
|
Isabgol
(Plantago ovata) |
Downy
mildew |
Peronospora
alta |
Seed
treatment with metalaxyl at 4g/kg seed and 3 sprays of
metalaxyl (0.2%) at 15 days interval starting from first
appearance is best for disease control. December sown crops
are mostly disease free. |
||
|
Sarpagandha
(Rauvolfia serpentina) |
Leaf
blight & Bud rot |
Alternaria
tenuis |
Spraying
of maneb (0.3%) or rovaral (0.2%). Seed treatment with contact
fungicides. |
||
|
Liquorice
(Glycyrrhiza glabnra) |
Leaf
spot |
Cercospora
cavarae |
Maneb
or zineb spray at 0.2%. |
||
|
Long
pepper (Piper longum) |
Leaf
spot & rotting |
Colletotrichum
& Cercospora spp. |
Spraying
of Bordeaux mixture - one during May and 2-3 sprays during
rainy season. |
||
|
Khasi
kateri(Solanum viarum) |
Wilt |
Fusarium
oxysporum |
Direct
sowing of seeds instead of transplanting of seedlings can
reduce the disease incidence |
||
| Aromatic Crops |
||||
|
Palmarosa
& Lemongrass (Cymbopogon spp.) |
Red
leaf spot |
Collectorichum
graminicola |
Two
sprays of carbendazim (0.1%) or 3 sprays of maneb (0-.3%)
starting from first appearance of disease at 20 days or 10-12
days intervals, respectively. |
|
|
Rose
( |
Die
back |
Diplodia
rosarum |
Pruned
ends of the shoots should be treated with copper fungicides. |
|
|
Ambrette
seeds |
Anthracnose |
Collectotrichum
|
Seed
treatment with contact fungicides and spray of Bordeaux
mixture are recommended. |
|