[grapeman]

Originally Posted by OsWiZzLe

https://www.sciencedirect.com/science...9&searchtype=a

Effect of phosphite fertilization on growth, yield and fruit composition of strawberries

Abstract

Traditionally, phosphates (Pi, salts of phosphoric acid, H3PO4) have been used for plant fertilization, and phosphites (Phi, salts of phosphorous acid, H3PO3) have been used as fungicides. Nowadays several Phi fertilizers are available in the EU market despite the fact that in research trials Phi has often had a negative influence on plant growth. The objective of this study was to elucidate the effect of a Phi fertilizer on plant growth, yield and fruit composition of strawberries (Fragaria × ananassa Duch.). Experiments were carried out with ‘Polka’ frigo plants in South Estonia in 2005 and 2006. The number of leaves per plant, total and marketable yields, fruit size, fruit ascorbic acid content (AAC), soluble solids content (SSC), titratable acidity (TA), anthocyanins (ACY) and total antioxidant activity (TAA) were recorded.

The results indicate that Phi fertilization does not affect plant growth. Phi fertilization had no advantages in terms of yield increase, compared to traditional Pi fertilization. Fruit acidity increased and TSS decreased due to foliar fertilization with Phi in 2006. Soaking plants in Phi fertilizer solution prior planting was effective in activating plant defence mechanisms, since fruit ascorbic acid and anthocyanin content increased.

I only have one comment to those who keep quoting science studies stating that phosphites have NO P effect.

You would all go broke in the farming business (and fucking fast) because you believe scientists know better then the farmer who is risking all to buy a product, using it, seeing the effect and using it again the following year.

Farming by the book or the USDA Extension agent's advice is laughable.

I know better.

[spurr]

Dude, no one has stated Phi provides no P, stop putting words in our mouths, and the mouths of countless studies! That study, if you took the time to read it, and not read only the abstract, doesn't claim Phi provides no P; it's simply states the FACT that Phi needs to be converted into Pi before it provides P.

And Phi is a very poor source of P compared to Pi. Thus, you should be using Pi for your foliar, not Phi.

I/we have stated many times: Phi must be converted into Pi before it can provide P, and that takes week(s); thus, it's silly and uber inefficient and ineffective to try and provide P via. Phi, instead of just using Pi.

The fact that you think you know more than dozens and dozens of scientists who studied the effects of Phi ON FIELD CROPS over the past 70 YEARS, fellow growers and even (legit) companies that sell Phi (for what it is: a fungicide), just makes you look pretty darn arrogant...

You did not account for all factors, nor conducted proper testing with controls, before you made your conclusions.

I have had it with people who claim the sky isn't blue and the night isn't dark; I can't be part of this thread anymore. I am getting too upset at people in this thread, who are normally otherwise intelligent.

[spurr]

Also, because Phi is systemic, the grapes you are selling are LOADED with the fungicide Phi. Thus, anyone who eats your grapes are getting poisoned with Phi. I for one would never eat your grapes...

If you don't believe me than read some of my references on the Phi residues found on applies and other fruits when they go to market!

spurr,
while we can all appreciate your passion on the subject, others are entitled to their opinions and entitled to question scientific studies. Telling people they are being stupid and stubborn only makes you look like the bad guy. You can't jump down peoples throats for disagreeing with you.
I've been patient thus far but I will not sit by and let this go on ANY further. So I suggest we leave things be and get back onto the topic of this thread. Per the OP- Who uses Phosphites?

[spurr]

.

[spurr]

Evilme:

You are correct, and I will not respond to this thread any longer. I can't keep my cool with people in this thread any longer, so I should just not post again in this thread. I've written all I need to, and your right, I am getting too upset.

[TickleMyBalls]

Thank you. the link is now in your sig now too. so you will be getting your message out if you post elsewhere anyway. it's not healthy to get so upset with people on the internet. go spend some time in your garden and away from the computer. I'm sure the plants could use the attention, and your keyboard could use the break.

[grapeman]

Originally Posted by spurr

And Phi is a very poor source of P compared to Pi. Thus, you should be using Pi for your foliar, not Phi.

You're a fucking idiot. You keep quoting a study as if you have any knowledge of wtf you would do if you had to decide what works and what doesn't.

And I've said that my use of phosphites via foliar has increased P in my plants even though I have reduced the use of P by 80%.

So you can quote your studies and you can tell me that I should be using a different product because you or some published paper knows better. All the while I am doing what I do. I just finished harvesting one million boxes of grapes from july to nov. All with phosphite foliar and 70% of the crop exported (as in USDA #1 quality). I guess I wasted my money... or you could've shown me how to do it better.

Show me where one of your published studies has been done on more then 1 or 2 acres and then the scientist actually picked the crop and sold it. I've been a part of these studies. They usually take 20 plants or so, half ass treat them because it's too fucking hot for the professor to be outside then send a student to finish the study. Or maybe you can tell me your experience other then using google and then pretending you have knowledge.

Fucking idiot. Your real life experience is looking at your fucking computer screen.

And advising me as if you have done anything you can point to other then a plant or 2 in your closet.

Phosphites work. Whether they are the reason some guy here made nice plants or not, I don't know. But you have balls telling me that I don't know what I'm doing in my day job.

BTW, you never addressed my previous post where I pointed out that phosphites are probably a good delivery vehicle for other nutrients also. Not that I care really.

[KharmaGirl]

Enough. Closed.