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Author Topic: Its Now Time To Foliar Feed For Best Crop Of Fruit  (Read 5267 times)

Millet

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Its Now Time To Foliar Feed For Best Crop Of Fruit
« on: January 16, 2018, 12:46:20 PM »
Winter prebloom foliar spray application of low Biuret urea is known to greatly increase flower number, thus greater crop yield.  Proper timing is important to achieve the desired outcome.  Winter prebloom sprays are designed to increase flower number and fruit yield without reducing fruit size. Winter prebloom foliar sprays with low biuret urea (46-0-0 >0.5% biuret) is applied at the rate of .44-lbs. (200-grams) in 2 gallon of water plus one teaspoon of a good surfactant per gallon.. For large area sprays (acres) 50-lbs. per 225 gallons water. NOTE: a second low biuret urea foliar spray should also be done after early fruit drop and June drop periods to insure an  increase in fruit size.  In most areas  this would be around July 1 to July 20.
« Last Edit: January 16, 2018, 01:04:12 PM by Millet »

Luisport

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #1 on: January 16, 2018, 01:39:47 PM »
Hello my friend, thank you for your post. Most of my citrus trees are full of flowers but a bit yellow since summer dry period so i will do it in next days! Thank's.  ;D

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #2 on: January 16, 2018, 03:40:06 PM »
Luisport, I'm not sure about the blooming period in your area, However, in the future make your low biuret foliar spray about 1 to 2 months prior to the expected bloom date.

Waiting

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #3 on: January 16, 2018, 09:49:33 PM »
A friend has a Gold Nugget Mandarin on Flying Dragon. It was purchased as a "5-gallon" tree and has been in the ground for three years. It's still really small. Would the .44-lbs. per 2 gallons of water (actually a gallon or less would probably suffice) mixture be recommended for this tree?

Thanks

gary

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #4 on: January 16, 2018, 10:44:16 PM »
Waiting, nitrogen is one of the most use elements for a citrus tree.  Of all fertilizer nutrients used as a foliar spray on citrus, urea is the most readily accepted nutrient by the tree.  Urea absorbs into the tree through the leaves faster that any other element. It most certainly would help  the tree to get going.  Just be sure the urea you apply is low biuret.  100 grams/ 1-gallon, spray to good coverage, but do not over due it. Spray earlier in the morning or in the evening. Do not spray a citrus tree during the heat of he day.

Waiting

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #5 on: January 17, 2018, 01:35:11 AM »
Thanks, Millet. Looks like a shopping trip is in order :-)

Luisport

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #6 on: January 17, 2018, 05:01:13 AM »
Luisport, I'm not sure about the blooming period in your area, However, in the future make your low biuret foliar spray about 1 to 2 months prior to the expected bloom date.
Well the weather is changing here. Now we have the first rains in November with warm temperatures. This makes all citrus to puch flower buds, but we didn't got so much freeze temp so they didn't got killed. Now the flower buds are one or two weeks to bloom. It will be a great citrus production this year.

Slicko

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #7 on: January 17, 2018, 06:15:52 AM »
What do you call low biuret in urea?
The urea I have access to has 1% biuret. Is that high, low or mid range for urea ?

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #8 on: January 17, 2018, 09:48:30 AM »
Low Biuret urea is defined as 0.5% biuret or lower.

Slicko

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #9 on: January 17, 2018, 03:58:24 PM »
Thanks

00christian00

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #10 on: January 17, 2018, 04:42:36 PM »
Nice info!
Are all 46% Urea fertilizer low biuret or there is no correlation?
Cause I only found 1 product labeled as low biuret.

Another thing. I read this help with cold temps, but Urea is mostly Nitrogen while just yesterday I saw a video saying applying PK fertilizers helps with cold, so which one is the correct one?

Ilya11

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #11 on: January 17, 2018, 05:09:09 PM »
Millet,
Low biuret urea is "46-0-0 <0.5% biuret", not "46-0-0 >0.5% biuret" ;D
Best regards,
                       Ilya

Slicko

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #12 on: January 17, 2018, 07:25:48 PM »
Is anyone able to say what effect/s using urea biuret of 1% would have on citrus? Not that I am using it, just curious

Mick

Vlad

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #13 on: January 17, 2018, 07:42:12 PM »
Millet, what surfactant do you recommend?
I have some trees in a greenhouse that have not yet flowered, others are in various stages of lowering. Is it too late to apply urea to trees that are already flowering?
« Last Edit: January 17, 2018, 07:51:32 PM by Vlad »

Waiting

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #14 on: January 17, 2018, 10:50:54 PM »
I don't have a scale that will weigh small amounts. Can someone guesstimate how much 100 grams would be in cups or tablespoons?

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #15 on: January 18, 2018, 03:50:54 PM »
Ilya11,  the absolute correct description of low biuret Urea would be (46-0-0 =or less than 0.5% biuret) or (46-0-0 =>0.5% biuret).  Vlad the surfactant I use is Tween-20 which is also a food grade surfactant. 
« Last Edit: January 18, 2018, 05:35:06 PM by Millet »

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #16 on: January 18, 2018, 04:04:17 PM »
Slicko, citrus is more sensitive than most crops to biuret, an impurity present in urea fertilizer created by excessive heating of chemical reactants during urea manufacture.  Toxicity can result from soil or foliar spray applications of urea applications with elevated biuret concentration. If urea is used as a nitrogen source for citrus, it should contain not more than 0.25 - 0.50% biuret by weight.  The leaf symptoms of biuret toxicity appear as an irregular butter yellow chlorosis that starts at the leaf tip.  Young leaves are more vulnerable than old ones, and affected leaves do not regreen.  On very young, expanding leaves, urea with a biuret concentration in excess of 1.0% may cause distortion as well as typical yellowing.  Succeeding growth flushes appear normal, provided applications of High biuret urea is not repeated.

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #17 on: January 18, 2018, 04:07:33 PM »
Vlad, if your trees are already in flower it will not help to increase additional flowering. Urea must be applied prior to the time of irreversible commitment to flowering.  After the tree has already committed to flowering it is to late.  However, applying low biuret urea at most any time during the growing season will always be beneficial as a nutrient ingredient.
« Last Edit: January 18, 2018, 04:17:31 PM by Millet »

Waiting

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #18 on: January 18, 2018, 04:49:05 PM »
A 16oz bottle of Hi-Yield brand spreader/sticker runs about $7 at Walmart.

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #19 on: January 18, 2018, 04:54:06 PM »
Waiting, does your friend with the Gold Nugget Mandarin regularly fertilize his tree?  For in ground citrus trees a 1 year old tree should be fertilized 6 times per growing season,  A 2 year old tree 5 times per growing season. A 3 year old tree 4 times, and trees 4 years old and older 3 times per growing season.
« Last Edit: January 18, 2018, 05:37:27 PM by Millet »

Slicko

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #20 on: January 18, 2018, 09:37:42 PM »
Thanks Millet for your information. Understanding the problem means that you are well on the way to solving it.

Mick

Waiting

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #21 on: January 19, 2018, 06:17:02 PM »
I don't think the tree has been fertilized unless indirectly from when they fertilized tomatoes growing in the same planting bed. I'm going to try to get them on a schedule but they don't take well to instruction. Last year he pruned off all of the small wood on his peach tree despite my explaining how to do it  (I wasn't there at the time) - didn't have a single peach.

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #22 on: January 19, 2018, 08:20:26 PM »
Waiting, for your neighbor's tree ....... no fertilizing = no growth.

GregW

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #23 on: January 21, 2018, 01:29:10 PM »
Can anyone name a specific name brand product name that meets the low biuret requirement?

Thanks

Millet

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Re: Its Now Time To Foliar Feed For Best Crop Of Fruit
« Reply #24 on: January 22, 2018, 09:48:27 AM »
You can find it on the Internet ----- type in Low Biuret Urea

 

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