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Produce => Edible Plants => Topic started by: elhuerto on June 09, 2009, 08:58:17

Title: Sweetcorn watering / feeding
Post by: elhuerto on June 09, 2009, 08:58:17
I seem to remember reading here or elsewhere that it's best to stop watering sweetcorn at a certain point. The plants are about a metre tall and the first tassels are showing as the cobs begin to peek out so should we continue to water and feed occasionally until the cobs are fully formed or not?

Cheers!
Title: Re: Sweetcorn watering / feeding
Post by: daileg on June 09, 2009, 11:21:56
wouldnt worry too much about watering / feeding sweatcorn as the root system goes so far down wouldnt do much good anyhow takes its nutrients from the deep at least 2-3 foot down they do have a root system closer to the surface give them some chicken pellats once or twice in there season
Title: Re: Sweetcorn watering / feeding
Post by: davyw1 on June 09, 2009, 12:12:32
Sorry but i have to disagree about watering.
Sweet corn requires frequent watering to produce full, healthy ears. Once the tassels appear, you should be watering at least one inch of water per week. Make sure the soil doesn't dry out between watering's. If your area is experiencing particularly hot and dry weather, make sure to compensate and water more frequently. Corn will not do well when exposed to prolonged drought
Title: Re: Sweetcorn watering / feeding
Post by: elhuerto on June 09, 2009, 12:23:14
Thanks, it's pretty warm here 25º to 32º daily so we've been watering thoroughly about once a week and the plants look great. Just wanted to check if we should continue with more of the same.
Title: Re: Sweetcorn watering / feeding
Post by: daileg on June 09, 2009, 12:36:48
Quote from: davyw1 on June 09, 2009, 12:12:32
Sorry but i have to disagree about watering.
Sweet corn requires frequent watering to produce full, healthy ears. Once the tassels appear, you should be watering at least one inch of water per week. Make sure the soil doesn't dry out between watering's. If your area is experiencing particularly hot and dry weather, make sure to compensate and water more frequently. Corn will not do well when exposed to prolonged drought


what i should have also mentined my soil is very heavy clay and has a good water retention so sorry for giving advice without being clear enough

sorry Davyw1
Title: Re: Sweetcorn watering / feeding
Post by: davyw1 on June 09, 2009, 13:16:53
daileg, no need to be sorry, i think we all tend to forget that our growing conditions are all different.
Title: Re: Sweetcorn watering / feeding
Post by: Tee Gee on June 09, 2009, 14:20:20
I work on the rule of thumb;

If a plant has a hollow stem it wants lots of water, hard stems much less.

I prefer to prepare my ground prior to planting with lots of 'humus' this ensures a regular supply of moisture for the plants.

But as davy says it all boils back to soil structure!

And as Arthur Billet used to say.............the secret is in the soil!
Title: Re: Sweetcorn watering / feeding
Post by: 1066 on June 09, 2009, 14:44:37
As it turns out Dailegs info on not watering if growing on clay (as I do) is useful for me, so thanks!
And I wish my soil would tell me its secrets  ;)
Title: Re: Sweetcorn watering / feeding
Post by: cornykev on June 09, 2009, 17:00:02
Don't forget plenty of mulching around the plants will keep the soil moist.  ;D ;D ;D
Title: Re: Sweetcorn watering / feeding
Post by: amphibian on June 11, 2009, 08:29:05
I've been watering mine, but then I'm trying to grow them in the pile of ragstone that passes for soil round here, soil which is dry five minutes after the rain stops.
Title: Re: Sweetcorn watering / feeding
Post by: elhuerto on June 11, 2009, 08:59:56
Temperatures here are expected to be in the mid 30s this weekend so it's tough to stay on top of the watering. The original question was about watering / feeding once the cobs have formed really rather than a general watering issue.
Title: Re: Sweetcorn watering / feeding
Post by: Digeroo on June 11, 2009, 09:15:53
I do a great deal of watering and mulching.  Perhaps we need to have our soil type in the post.  I am on very well drained soil.  In my garden in particular it can get bone dry only a foot down and however hard the plant tries to find water there just isn't any to be had.  It would have to go down several feet through solid gravel to find it.  I think the beans may achieve this, but I do not think the sweet corn manages.  I also build up the soil depth with raised beds.  Not for salads but for beans and sweetcorn.

I find it very odd looking round at the allotments and seeing exactly the opposite crops in the raised beds to the ones I would put in them.  

At my allotment things are different from one end to the other.  One end is sloped so drains very well and the other end gathers the water.  

Also I have a squash to ramble underneath to keep the soil cool.  Planted it next to the sweet corn this year, felt thye took too much goodness out of the soil.

I forget you were in spain, could not understand how you managed to get cobs already. 

Have incorporated a good deal of manure amongst my stones, and mulched with it as well.  Corn so far looking good.  One patch was 100% gravel, so I mixed in even more manure.   
Title: Re: Sweetcorn watering / feeding
Post by: bredmond on June 29, 2009, 16:52:04
Came to this today as I'm growing S-C for the first time and I'm a bit confussed. Most on my allotment are of the "teach them to swim" persuasion but i have seen different in books. I was also in Mexico a few years back which is sort of  -- dry? and the farmers cant afford fertilisers etc? yet there are loads of them everywhere. Maybe I should dry some variations. Pretty rich soil in East London.
Title: Re: Sweetcorn watering / feeding
Post by: manicscousers on June 29, 2009, 17:52:34
Hiya, bredmond, welcome to a4a  ;D
we just mulch our sweetcorn, it's planted in well manured soil but we don't water it  :)
Title: Re: Sweetcorn watering / feeding
Post by: amphibian on June 29, 2009, 21:39:44
Quote from: bredmond on June 29, 2009, 16:52:04
Came to this today as I'm growing S-C for the first time and I'm a bit confussed. Most on my allotment are of the "teach them to swim" persuasion but i have seen different in books. I was also in Mexico a few years back which is sort of  -- dry? and the farmers cant afford fertilisers etc? yet there are loads of them everywhere. Maybe I should dry some variations. Pretty rich soil in East London.

I have heard that Mexican farmers do not feed their native maize in any way. However, they have found imported commercial maize require feeding. Native Mexican maize can be huge, several metres higher than the F1s many of us grow, I suspect root depth also varies. Additionally most Mexcan corn production is geared towards flour production, entirely different than sweetcorn.
Title: Re: Sweetcorn watering / feeding
Post by: JOHN WILSON on June 29, 2009, 22:13:01
I've grown short-season sweetcorn here [lancashire, 54 degrees North] for many years, on heavy  clay soil that has been organically enriched over some 30 years - spent mushroom compost and my own saved compost.  On this soil they need no additional water once established, and we've noted that in Italy fields of commercial maize stand for weeks in the blazing sun, though admittedly that's grown for cattle fodder not juicy cobs.

On the fertiliser front, there is a tradition that native American Indian squaws plant corn with a small fish to each seed.  Our sanitised equivalent is FBB of course! It may also be worth remembering that maize is a grass and so a good supply of nitrogenous fertiliser helps them along.

Having tried many varieties I've settled on Swift after the Which report some years ago suggested that it was best for both yield and flavour, an unusual combination.

Title: Re: Sweetcorn watering / feeding
Post by: amphibian on June 29, 2009, 22:47:25
Quote from: drjohn on June 29, 2009, 22:13:01
[...]and we've noted that in Italy fields of commercial maize stand for weeks in the blazing sun, though admittedly that's grown for cattle fodder not juicy cobs.

On the other hand I have noted corn fields in Portugal were extensive spray watering is conducted.

Like this.

(http://www.simply-thai.com/malee-images/sweetcorn-farm-bigl1jpg.jpg)
Title: Re: Sweetcorn watering / feeding
Post by: Borlotti on June 29, 2009, 23:13:26
I spent a good hour tonight watering everything on the allotment including the sweet corn.  Dinner will be a bit late tonight as I have just cooked the rhubarb, made gooseberry jam and strawberry, raspberry and redcurrant jam, and shelled the peas, cut up 3 runner beans (first ones), and carrots, also put the sweet peas in vases, and then watched the tennis.  Think I may go to bed and have dinner tomorrow.  Think I will have to go to 'Allotments anonymous' soon.
Title: Re: Sweetcorn watering / feeding
Post by: boltonlad on June 29, 2009, 23:59:46
Quote from: Borlotti on June 29, 2009, 23:13:26
I spent a good hour tonight watering everything on the allotment including the sweet corn.  Dinner will be a bit late tonight as I have just cooked the rhubarb, made gooseberry jam and strawberry, raspberry and redcurrant jam, and shelled the peas, cut up 3 runner beans (first ones), and carrots, also put the sweet peas in vases, and then watched the tennis.  Think I may go to bed and have dinner tomorrow.  Think I will have to go to 'Allotments anonymous' soon.

I was made redundany last year and now have nothing much more to do than go to allotment.  Think I am using it to replace work.  So I know what you mean about allotments anonymous.  To prove my point the committee have entered me into the bolton best new starter competition, when I told them I was not their to compete in any way ???.
Title: Re: Sweetcorn watering / feeding
Post by: saddad on June 30, 2009, 00:31:40
Hi DrJohn... have you or BoltonLad tried Ovation... I find it works best here in Derby. Speaking of Mexican Corn I have some Giant White in from Jungle seeds, I'm not expecting it to crop but if it gets over 8' tall I'll be happy (for the september Open Day!)
:)
Title: Re: Sweetcorn watering / feeding
Post by: Emagggie on June 30, 2009, 07:48:38
Quote from: Borlotti on June 29, 2009, 23:13:26
I spent a good hour tonight watering everything on the allotment including the sweet corn.  Dinner will be a bit late tonight as I have just cooked the rhubarb, made gooseberry jam and strawberry, raspberry and redcurrant jam, and shelled the peas, cut up 3 runner beans (first ones), and carrots, also put the sweet peas in vases, and then watched the tennis.  Think I may go to bed and have dinner tomorrow.  Think I will have to go to 'Allotments anonymous' soon.

;D ;D ;D ;D ;D ;D
Title: Re: Sweetcorn watering / feeding
Post by: Mr Smith on June 30, 2009, 08:30:26
I'm in the Swetcorn watering club just off down to the lotty before it gets to HOTTTTTTTTTTtttttttttttttttttttttttt, ;D
Title: Re: Sweetcorn watering / feeding
Post by: cornykev on June 30, 2009, 15:13:54
I gave mine a good watering last night when it had cooled down a bit.    8)       ;D ;D ;D
Title: Re: Sweetcorn watering / feeding
Post by: Ishard on June 30, 2009, 15:20:27
Mine gets so much water everynight theres puddles when I leave the plot.

If the corn isnt juicy it isnt my fault!!
Title: Re: Sweetcorn watering / feeding
Post by: daxzen on June 30, 2009, 15:34:55
watering plants on an allotment in summer

whats that all about!!

seriously though - we have no water where I am and all I have has been collected in my butts - they are now empty!

we have adapted our methods to encourage plants to find their own water

its a tough regime but i think its pretty authentic

of course if we had mains water i'd be plashing it all over

necessity is the mother of invention and all that jazz!

dax
Title: Re: Sweetcorn watering / feeding
Post by: amphibian on June 30, 2009, 19:14:05
Quote from: daxzen on June 30, 2009, 15:34:55
we have adapted our methods to encourage plants to find their own water

Care to elaborate?
Title: Re: Sweetcorn watering / feeding
Post by: Borlotti on June 30, 2009, 22:20:23
I've done something to my back, too much watering.  Sorry plants but you will have to do without tonight.
Title: Re: Sweetcorn watering / feeding
Post by: elhuerto on July 01, 2009, 12:00:27
Temperature got to 37 degrees yesterday and is supposed to go above that today. The sweetcorn was just about the only one not wilting when I went in the evening - shame the earwigs have got to it!
Title: Re: Sweetcorn watering / feeding
Post by: 1066 on July 02, 2009, 08:51:40
Quote from: elhuerto on July 01, 2009, 12:00:27
Temperature got to 37 degrees
OUCH !

Quote from: elhuerto on July 01, 2009, 12:00:27
shame the earwigs have got to it!

Have they done much damage yet? I'm fairly new to growing sweetcorn, so appreciate info on what I need to look out for

1066
Title: Re: Sweetcorn watering / feeding
Post by: elhuerto on July 02, 2009, 09:18:40
They have done a lot of damage, I picked one to check and half the sweetcorn on the cob had been eaten. So the crop is just about ruined but I'll continue letting them grow etc as the chickens enjoyed the remains. The tell tale sign was that the tassels had gone and were lying on the floor around the plants, opening up the cob a bit let the critters come out, about six earwigs in each. I realised that too late to do anything but will know for next year I guess - hope that helps and you don't suffer the same.
Title: Re: Sweetcorn watering / feeding
Post by: 1066 on July 02, 2009, 09:21:12
Yes thanks for the info elhuerto, and what a shame!  at least the chickens will be happy  :)

1066
Title: Re: Sweetcorn watering / feeding
Post by: Digeroo on July 02, 2009, 09:52:20
QuoteTemperature got to 37 degrees yesterday

Well we managed over 30 degrees yesterday.  Not up to your standards but for UK pretty hot.

How frustrating to loose all your corn. Some of  mine is just starting to produce the central flower, when you spend weeks watching something grow it is so devastating to find something wrecked.  Was just about to sow all my corn when I came across RHS web site and on their advice divided into batches and sowed at intervals.  Lost second batch while on holiday but three batches so far doing well.

Have in past lost broad beans to earwigs. 
Title: Re: Sweetcorn watering / feeding
Post by: 1066 on July 02, 2009, 10:42:53
I didn't get round to doing a 2nd sowing as I've lost the blummin packet  ::)  So I'm hoping the 1 and only batch I have does well !

1066
Title: Re: Sweetcorn watering / feeding
Post by: bredmond on July 02, 2009, 13:29:55
Thanks for the responces. The Mexican native / import and flour points are interesting. A lot is grown in Chipias in the South where they are p*** poor and they do eat it -- lots. They get a deluge every so often so maybe they have cunning irrigation going on - these are people who build cities on lakes.  Anyway at the risk of sounding like New Labour Lib Dem Allotment Man., I shall compromise and give one block lots of water and the other one a light sprinkle and see if it makes any difference.
Title: Re: Sweetcorn watering / feeding
Post by: daxzen on July 02, 2009, 13:31:29
great research

i'd be interested in the results of that experiment