Diseases and Management of Crops under Protected Cultivation

(Diseases and Management of Crops under Protected Cultivation)
OR Aliette @2.5 g/lit. Nursery implements should be disinfected regularly with sodium
hypochloride solution and at the entry of nursery. The arrangement should made to disinfect the
shoe of workers and visitors with copper sulphate and lime dust. Floor should be regularly sprayed
with copper fungicides and at the entrance of nursery. The insect pests in nursery should be
managed with the regular application of recommended insecticides
• water against leaf miner
• gainst leaf eating caterpillar/ Thrips
• water against leaf miner
•
• . water or wettable sulphur @ 3 g/lit.water against mites
• f the above pesticides
gave better results against insect pests.
Tips for raising disease- free nursery
• Nursery site should be away from the citrus orchards.
• Nursery should be raised in containers (plastic trays/polythene bags)
• Only sterilized potting mixture should be used in primary and secondary nursery.
• Always use fresh seeds extracted from healthy fruits and sow in trays under shade
conditions for better germination
• Seed trays must be kept at least 1.5- 2.0’ above the ground to avoid soil borne
contamination.
• from
soil.
• Only nucellar seedlings should be selected for further growth.
• Seedlings with bent and twisted tap root system should be discarded
• Too long taproot should be cut to ensure the straight penetration of root in soil.
• Seedlings should be transplanted during rainy season/cloudy days in polythene bags for
greater survival.
• Seedlings should be treated with Ridomil @ 2.75g and Bavistin @ 1g/lit water at the time of
transplanting in secondary nursery.
• Bud wood should be taken from disease free selected and certified elite mother plants of
known pedigree.
• High budding not less than 9” of height should be done.
• Sterilized knife with alcohol or sodium hypo chloride should be used for budding and it
should regularly be washed with surface disinfectant.
• Bud wood should be selected from fairly well mature non-bearing shoots of current year
growth from selected plants.
• Selected mother plants should be monitored regularly for diseases.
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