cardamom mosaic disease or katte disease

Katte disease is a common disease in cardamom,in this slide i give you a small description about the desease and its symptom

1. CARDAMOM MOSAIC,MARBLE OR KATTE DISEASE

2. Disease(viral)commonly seen in katte in NORTH KANARA Most devastating disease in South India Mainly found in cardamom,cause an extensive damage on crop yield loss CAUSATIVE ORGANISM: CARDAMOM MOSAIC VIRUS

3. SYMPTOMS Seen at any stages of the growth First observed in young leaves of cardmon which shows a general chlorosis of the entire blade with slender, interrupted,parllel streaks of a pale green tissues running along with veins from midrib to the margin

4. As a result of charecterstic symptoms,the disease plants can be easily recognized even from the distance owing to their pale appearance No symptoms are observed in flowers.pseudostems become stunded and leaves are redused in size

5. The rhizomes gradually shrivel and the entire clump dies eventually They may be die before the time of bearing flowers and fruits

6. TRANSMISSION Transmited through infected clones by several causitive species such as aphis nerii macrosiphum sonchi and aphis gossipiii which belonngs to class aphids that are present in the field

7. MANAGEMENT CULTURAL CONTROL Cultural control is a part of sustainable agricultural systems to achieve high crop yeild and is important tool to minimize the disease loss in many crops They are: FIELD SANITATION AND DESTRUCTION OF WEED HOST

8. CROP ROTATION TILLAGE TRAP CROP

9. PREVENTION Chemical control Preventive or remedial operations which depends upon their effectivness upon the chemical action or chemical properties of their substance used Insecticides : as stomach poison borax,thallum, phosphorus, Mercury,fixed nicotine's Contact poisons :oil emulsions,pyrethrums,benzene hexa chloride and organic phosphates Fumigants:chemicals like hydrogen cyanide ,carbon bisulfide,sulphar dioxide,para dichloro benzene

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