Ginger (Zingiber officinale)
Leaf spot (Colletotrichum capsici)
Symptoms
- Oval spots with straw coloured centre with brown margin ( C.O.: Helminthosporium maydis, Spindle shaped spots with grey centre and dark brown margin - C.O.: Pyricularia zingiberi, Small spindle shaped yellow spots later to oval lesions - C.O.: Leptoshaeria zingiberi, Papery white spots - Phyllosticta zingiberi.)
- Later, spots may coalesce and form an irregular patch covering almost the whole leaf.
- Affected leaves undergoes drying
- The growth of rhizome ceases.
Management
- Pluck and remove the infested leaf and uproot the infested plants and destroy them.
- Use proper green mulching to reduce soil splashes.
- Use of plant extracts such as garlic extracts is effective against foliar pathogens.
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|
| Dosage/acre (200 L) | Dosage/hectare (500 L) | ||||||
| 1 | Mancozeb 75 WP | Devidayal M-45, Dhanuka M 45, Dhanuka M-45, Dithane, Dithane M-45, Hilthane, Hindustan M 45, Indofil M 45, Izeb M-45 Manzate, Luzen-45, Macoban, Macoban M-45, Mancosaan, Mancosaan M-45, Maneb Manzane, M-Guard, Savour M 45, Tata M-45 Eurofil-NT, Uthane M-45, Veera, Zinthane | Green | 3 g/litre of water | 600 g | 1500 g | |
Extremely Toxic
Highly Toxic
Moderately Toxic
