Pineapple (Ananas comosus)
Soft rot, Black rot & White leaf spot(Chalara paradoxa)
Symptoms
- Soft black rot which begins at the area where the seed piece detaches from the mother plant
- Entire seed piece may be rotted.
- Black rot of fruit causes a soft, watery rot and small brown, wet spots develop on leaves
- Leaf spots enlarge and turn gray-brown with light brown margins
Management
- Seed material should be stored on mother plants during dry weather and with good air circulation
- Freshly removed seed material should be dipped in thiabendazole @ 1000 ppm within 12 hours
- Avoiding wounding of fruit during harvest helps to reduce black rot
Chemical Control
| Sl.No | Generic Name | Trade Name | Color code | Dosage/litre | Knapsack Sprayer (Capacity 10L) | Recommendation | Remarks | |
|---|---|---|---|---|---|---|---|---|
| Per acre (200 L) | Per hectare (500 L) | |||||||
| 1 | Mancozeb 75 WP | CDevidayal M-45, Dhanuka M-45 Dithane , Dithane M-45 , Hilthane Hindustan M-45 , Indofil M-45,Izeb M-45 , Manzate , Luzen 45 ,Macoban M-45, Mancosaan , Mancosaan M-45 Manzeb 75 WP , Maneb Manzane M-Guard , Savour M-45 , Tata M-45 Eurofil -NT , Uthane M-45 ,Veera Zinthane | Green | 3 g/litre of water | 30 g | 600 g | 1500 g | |
Extremely Toxic
Highly Toxic
Moderately Toxic
