when to spray mango?

Wayne says...
Spray ASAP Michelle, you need to get that anthracknose under control. May I suggest using copper oxichloride and mancozeb combined, 30grams of each to 4.5L of water with a good wetting agent, say 60mls of that. Pure soap such as lux is OK if you can't get a wetting agent.

If you notice and aphid moths when you spray you will need to fix them as well. Spray every 10/11 days

Wayne says...
A wetting agent helps the spray stick to the plant, otherwise it just runs off without doing much, ask at your nursery

Mike says...
Rosie even with fungicide and insecticide you only need one dry day for spraying to be effective.Don't spray on the hottest days because this can burn the foliage.If you can't get wetting agent one or two drops of dishwashing liquid help the spray to stick to the leaves.

alcyly says...
I have a mango farm with more than 500 trees.my questions are follows:
a. from the day of flower inducer spray,how many days to count before you will make an another spray for insects,pest,or fungus?

b. As you said, we need to apply a wetting agent so that the chemicals will more efficient and effective,how much the dosage to be apply in every 200L of water or in a one big dram container?

d. how about the correct intervals from the break buds,until the buds elongations and so on until bagging?

c. during wet seasons, as we could be able to make any spray since the chemicals will be washing out from the rain,what should i do if the mangoes flowers so much attacking by the insect.fungus,or pest?

Pictures - Click to enlarge
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John Mc says...
Besides the large mammals we have here damaging the fruit, and, of course, rain during flowering. I spray Mancozeb up to just before flower opening then after pollination every two to three to four weeks till ripen.

asder says...
Does anyone know what a flower inducer is for a mango? They seem to flower profusely without help.

Mike says...
I believe potassium nitrate is the usual flower inducer and I don't know if it is available here.It may be useful for recalcitrant trees.
Anthracnose is the main mango problem fungus causing dying black tips,fruit black spot and early spoiling by going black.Mancozeb and copper oxychloride are the usual fungicides for this.Phytopthtera cause root rot and canker especially in durian and avos.Phosphonate a tonic not a true fungicide sold as anti rot is the usualy treatment but all these diseases are hard to cure and preventative spraying holds them off.

MaryT says...
Leave it to nature, Amanda? You battle nature more fiercely than anyone I know :) Fertility is big business; even for humans; why deprive the mango tree of a little science? Do you know how many test tube humans are walking the earth right now? Over four millions but how many frozen sperms and frozen embryos ? Countless.

asder says...
Here's a challenge -- go into a produce store with an Islamic beard and ask for potassium nitrate;see what happens.
Mike , phosphonate isn't a "tonic" ;there is no available phosphate in phosphonate.

Mike says...
Mary I agree it is arty science but my expertie is in the eating department.
Asder phosphate is different from phosphonate.Phosphorous acid or mono di potassium phosphite is the name I should have used if you are a chemistry enthusiast.
How about a false moustache when doing the purchase?

Mike says...
Sorry asder I was short in my description.PO4 phosphate is the compound that delivers the essential macronutrient phosphorous which has a role in plant physiology in disease resistance.That was not what I was talking about.The new age systemic,foliar and trunk injection fungicide H3 PO3 or (HO)2HPO if you are a chemistry nerd stimulates a plant root flush so it grows through phytophthera and can also prevent the fungis' sporulation with direct contact but it is not used this way and that it is why it is a tonic.As it can't break down to PO4 the plant thinks it has enough phosphorous and it actually can cause deficiency symptoms as a result.

MaryT says...
Good article, Amanda on the many reasons for non flowering. I only find it surprising that we're all still trying! :) Some of the other articles were good reading as well. I wish can calculate evaporation rate, for example.

Mike says...
That link is ideal for for exploring the spraying of mangoes in the Philipines and looking at the role of H3PO3.
You look like a polar explorer in that pic Mary.

MaryT says...
Mangoes

Pictures - Click to enlarge
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asder says...
Colin suggests putting superphosphate into the planting hole. But when you read the packet it warns of possible heavy metal contamination. What to do?. I don't think rock phosphate has much available phosphate.

BJ says...
He reccommends that for most fruit flowers, especially passionfruit, which some folk seem to have trouble with.

Brendan says...
Hi BJ, is this the spray? http://www.yates.co.nz/garden-calendar/november/product-of-the-month--yates-liquid-copper-fungicide/

Looks good :-) Might be in NZ only?