INTRODUCTION
Bordeaux Mixture is a mixture of lime and copper sulphate it is an effective fungicide and bactericide for horticulture crop. They are mainly used for canker, Gummosis, Twig die-back, Anthracnose die back, cercospora leaf spot, Downy mildew etc.
Procedure for preparation of 10% Bordeaux Paste(1:1:10)
- Copper sulphate 1 kg, quick lime 1 kg, water 10 litres.
- Break the copper sulphate crystals into fine powder and dissolve in 5 litres of water in a plastic bucket.
- Prepare milk of lime in another 5 litres of water in a plastic bucket.
- Pour the copper sulphate solution into the milk of lime make it 10 lit solution, slowly stirring the mixture with wooden stick.
- Before use check the solution ph simply deep a iron rod 2-5 minutes if they shows a reddish brown colour add more lime till the Iron rod is not stained on dipping.
- It is mainly use for paste.
Procedure for preparation of 1% Bordeaux Mixture(1:1:100)
- Copper sulphate 1kg, quick lime 275 or 400 gram, water 100lit.
- Copper sulphate 1kg mixed in 15 lit of water in a plastic bucket.
- Lime 275 or400 gram mixed in 15 lit of water in a plastic bucket.
- Next day add it solution in 70 lit water in a drum.
- Check the solution ph simply deep iron rod 2-5 minutes if they shows a reddish brown colour add more lime till the iron rod is not stained on dipping.
- Strain the prepared Bordeaux mixture through a cloth/strainer before spraying.
- It is mainly used for spraying.
Avoid
- Do not use metallic containers .
- Use the Bordeaux mixture soon after preparation.
- Not use the Bordeaux mixture in combination with any other chemical.
- In hot days, when the plants are showing signs of temporary wilting do not sprayed particularly on newly emerged tender foliage.
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