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Messages - Millet

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Citrus General Discussion / Re: Issue with my yuzu plant
« on: May 25, 2021, 11:12:30 AM »
It looks like it is under fertilized.  When you do fertilize what is the fertilize you use?   Hopefully it is not an organic fertilizer, due to the fact that your tree is a container grown tree.

Citrus General Discussion / Re: Indoor Citrus
« on: May 22, 2021, 03:34:26 PM »
The medium that you are going to use should provide good aeration to the roots.  That type of medium will require a more frequent watering schedule than peat type mediums.  You seem to have a good feeling of all the important requirements for indoor citrus growing.

On my larger containers I submerge the container in a larger container and let soak over night.  I do this approximately every couple mounts or so.  Other wise I normally water from the surface of the container.

Citrus General Discussion / Re: Beneficial Insects
« on: May 22, 2021, 11:31:53 AM »
Preserving Beneficial Insects
May 18, 2021Biologicals, HLB Management

beneficial insects
Green lacewing
Beneficial insects could be a citrus grower’s best friend. In a time when producers are applying insecticides to control the Asian citrus psyllid, the vector of citrus greening disease, it’s important to preserve the psyllids’ natural enemies, like lady beetles and lacewings.

Jawwad Qureshi, University of Florida entomologist, implores growers to scout their groves periodically to see what insects are present.

“If they know what’s there, then they can strategize their spraying. If they go out there and see a lot of lady beetles or a lot of lacewings, then they can think, maybe I should wait a little, or if I have to spray, maybe I should look into the Citrus Production Guide and see which pesticides are relatively less toxic so I can use one of those rather than using something that’s really harsh,” Qureshi says.

Qureshi is not suggesting growers stop spraying. But they need to evaluate the situation and see what insects are present. They need to conserve and preserve those resources.

“Let’s say you have a good population of lady beetles and you go and knock them down. That means you’ve killed many of those adults that were going to produce the eggs and babies that were going to be useful, not only for you, but for the neighbors and other crops as well,” he adds.

Beneficial insects were a lot more visible prior to the discovery of citrus greening disease than they are today. Qureshi said research studies found that beneficial insects knocked down 80% to 90% of the Asian citrus psyllid population.

“Several years ago, before this greening disease was found in Florida, we relied heavily on biologicals in the citrus system. There were a lot of lady beetles, lacewings and other beneficial predators that were feeding on the psyllid,” Qureshi says. He notes that sprays used for greening have significantly impacted the populations of beneficial insects.

Citrus General Discussion / Re: Citrus pruning and soil mix options
« on: May 21, 2021, 08:43:32 PM »
Bsalta, the bark in your picture should be fine.

Citrus General Discussion / Transparent Wood Using Orange Peels
« on: May 20, 2021, 06:12:57 PM »
An extract from orange juice production is offering an eco-friendly way for developing transparent wood, an innovative structural material for building construction. Since it was first introduced in 2016, transparent wood has been developed by researchers at KTH Royal Institute of Technology in Sweden. The wood lets natural light through and can store thermal energy.   
The key to making wood into a transparent composite material is to strip out its lignin, the major light-absorbing component in wood. But the empty pores left behind by the absence of lignin need to be filled with something that restores the wood's strength and allows light to permeate.
In earlier versions of the composite, researchers at KTH's Wallenberg Wood Science Centre used fossil-based polymers. Now, the researchers have successfully tested an eco-friendly alternative: limonene acrylate. “The new limonene acrylate is made from renewable citrus, such as peel waste that can be recycled from the orange juice industry," says KTH doctoral student Céline Montanari.
Unlike other transparent wood composites developed during the past five years, the material developed at KTH is intended for structural use. It shows heavy-duty mechanical performance.
All along, sustainability has been a priority for the research group, says Professor Lars Berglund, head of KTH's Department of Fibre and Polymer Technology. “Replacing the fossil-based polymers has been one of the challenges we have had in making sustainable transparent wood,” Berglund says. Environmental considerations and so-called green chemistry permeate the entire work, he says. The material is made with no solvents, and all chemicals are derived from bio-based raw materials.
The new advances could enable a yet unexplored range of applications, such as in wood nanotechnology, Berglund says. Possibilities include smart windows, wood for heat-storage, wood that has built-in lighting function – even a wooden laser.
The research team is working with Sergei Popov's photonics group at KTH to explore the nanotechnology possibilities even further.

Citrus General Discussion / Re: Beneficial Insects
« on: May 19, 2021, 06:19:38 PM »
Yprgos,  I don't know the answer to your question.  I want to say that I am not against spraying.  I have never seen any information published concerning the tree damage from HLB between organic growers, and conventional growers.  It would be interesting. 

Citrus General Discussion / Beneficial Insects
« on: May 18, 2021, 04:50:05 PM »
Beneficial insects were a lot more visible prior to the discovery of citrus greening disease than they are today, due to spraying. Research studies found that beneficial insects knocked down 80% to 90% of the Asian citrus psyllid population.

It is not the amount of water that damages or kills the roots, it is the lack of oxygen that kills/damage the roots..  After all, citrus trees can be grown hydroponically.  The length of time between watering, depends to a great part on  the type of medium the tree is planted in.  I once ran a test with citrus trees planted in the rapid draining 5-1-1 mixture (5 parts bark, 1 part peat, 1 part perlite) where I watered it every day, and sometimes twice per day for weeks on end, until I grew tired of continuing.   The trees did not have a single problem. 

Citrus General Discussion / Citrus Fruit Size & Quantity
« on: May 18, 2021, 11:03:18 AM »
The growth of citrus fruit is attributed to cell division and cell enlargement, which increases the number and size of cells, respectively, during the first two months following the beginning of fruit set and about four to six months thereafter This period is called Stage 2.
Fruit size increases rapidly as a result of water accumulation in cells during fruit development. Therefore, adequate water supply during spring and early summer is critical to ensure uninterrupted fruit development and growth for better fruit retention. So be sue your trees are watered well.  (Citrus Magazine)

Citrus General Discussion / Exciting Cure For HLB
« on: May 18, 2021, 10:47:59 AM »
The naturally occurring peptide is found in HLB-tolerant citrus relatives, such as the Australian finger lime. The peptide has dual functions of inhibiting Candidatus Liberibacter asiaticus (CLas) growth in HLB-positive trees and activating host immunity to prevent new infections. Jin said it is rare for a treatment to achieve both of these functions. According to scientist  the peptide’s corkscrew-like helix structure is able to quickly puncture the CLas bacterium, causing it to die typically within half an hour.

I'm not 100 percent sure what it is, but most likely a copper fungicide spray will take care of it.

Brian, I agree, but I thought it was quite interesting.

Citrus General Discussion / Re: Satsuma tree help, leaf drop
« on: May 14, 2021, 11:19:51 AM »
For MITES, just plain water works as well as chemical sprays.

Citrus General Discussion / Re: Satsuma tree help, leaf drop
« on: May 12, 2021, 11:01:51 AM »
Normally, just one or two sprays will rid spider mites from the tree.  After the 4 o 5 sprays you did, your tree should be OK.

Citrus General Discussion / Interesting Article - Sap Analysis
« on: May 12, 2021, 09:48:28 AM »
Sap Analysis, can find nutrient deficiencies before symptoms even show.

Citrus General Discussion / Re: Freeze damage recovery
« on: May 05, 2021, 11:01:06 PM »
he trunk split due to freezing.

Citrus General Discussion / Re: Grafting pomello on lemon
« on: May 05, 2021, 11:27:11 AM »
Lemons root very easily. Leave 2 or 3 leaves attached, strip of the lower leaves. Use current flush stems, but after they are fully matured and turned woody.   Wound the base of the cutting by removing two thin strips of bark, maybe 1/2" - 3/4" long from the base on opposite sides of the stem, then dipping in a rooting hormone.  Super easy varieties like calamondin and most lemons may need little to no hormone. Cover with plastic bag. Dip-N-Grow is often used, diluted 1:10 or 1:6 in water. Rooting in containers demand being shaded at mid day or they will cook.

Citrus General Discussion / Re: Lemon tree help
« on: May 04, 2021, 06:29:56 PM »
Following upon Brian's post what exactly is the fertilizer program schedule and the fertilizer formulation that you use?

Citrus General Discussion / May 4, 2021
« on: May 04, 2021, 12:14:43 PM »
Today, May 4, is National OJ Day.

There are a few different rootstocks available for mandarins. The most popular are C-35, Carrizo, and Flying Dragon. C-35 and Carrizo are the standard tree size with C-35 being slightly smaller of the two. Flying Dragon is a semi-dwarf rootstock.

Citrus General Discussion / Re: Blob on citrus tree
« on: May 03, 2021, 04:12:24 PM »
Beware of making the enclosure too air tight.  The tree requires air to supply the tree's need for CO2

 Spaugh, C35 rootstock has good compatibility with all oranges, grapefruit and lemons except Eureka.   Compatibility with mandarins/ satsumas is complex and not well understood.  Nearly all mandarins/satsumas perform well for at least 10 to 15 years, but many eventually develop bud union crease and decline.  This decline is the same with many of the common rootstocks.  (Taken from  the Citrus Production Manual.)

At the supermarket I shop at they sell 4 or 5 cultivars of citrus.   A price is shown for all varieties except one. Sumo never have a price listed.  Must be due to the high price that they sell for.  If people seen the price they would not buy them.

Cold Hardy Citrus / Re: New citrus tree in ground
« on: May 02, 2021, 12:40:34 PM »
Citradia that is a nice looking Meiwa.  Probably the only in ground mountain top Meiwa in the USA.

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