Why Do Greeks Paint Trees White?

It seems that most of the answers are written by people who donu2019t know what they talk about. I am a university graduated agronomist and the reason is to protect the trunk from fungi and bacteria. But when claiming to protect against insects and sun is not true and just an urban legend, even if many rednecks do it for that, without any real effect.

What you see as u201cwhiteu201d paint, in fact is a mixture of 10% copper sulphate hydrate plus an 10% slaked limestone (calcium hydroxide) diluted in water. The active ingredient, that prevents pathogenic bacteria and fungi from entering in the plant, is the copper ion itself. Not the sulphate, not the calcium, neither any mambo jumbo.

Copper is toxic to most bacteria and to a huge number of fungi, but not all. Limestone is used to adhere the copper on the trunku2019s surface in the long term. A more washy mixture is called Bordeaux Mixture and it is used for spraying the entire plant, including leafs, fruits, green stems, wooden trunk.

Bordeaux mixture is made from 1% copper sulphate plus 1% slaked limestone.Deadly serious fungal diseases can be controlled by painting the trunk, such as various phytophthora strains, verticillium strains, fuzarium spp, botryosphaeria spp, eutypa spp, esca disease, phomopsis desease, and some diseases caused by varieties of the bacteria Pseudomonas

· Related Questions

What does this C loop perform for (int I 0; num 1000 ! '0'; I)?

(Question edited multiple times. Answering: What does this C loop perform for (int I 0; num1000 ! '0'; I) cin >> numi)It fails to compile.

If the missing semicolon is inserted, then it may still fail to compile, never executes, executes forever, or segfaults.It fails to compile. We have two variables mentioned: I and i which are distinct.

If there is no integral variable i in scope, then the compilation will fail.It will never execute. Obviously, if num1000 0 upon entering the loop, it will exit immediately.

It will execute forever. If I ! i then the loop will either execute never (case above) or continually read values from cin until the user exits the program by killing it.

It will segfault. The most likely scenario. If the corrections are made so that I is renamed i then the program will read values and store them in num sequentially.

Eventually, i 1000 and if the next value read is not equivalent to zero, then the loop will proceed off the end of num and start trouncing memory until it either hits an unassigned address or corrupts the stack. (It also assumes that sizeof(num) > 1000, which is also not ensured. )The problem is that the termination condition is independent of the variable i which is allowed but in 99.

44% of all cases is a logic error.The question really to ask is: what exactly is this loop supposed to accomplish? Some low-cost invariant and variant assertions added to the loop may help in diagnosing problems

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What is "mandatory fun" in military lingo?

Back in my day it was pretty much standard through the army air Force navy I was stationed up in Washington (all three bases close by) we would all get volunteered for some duties such as we have family days 4 units so other soldiers from different units would come be part of the maintenance team if you will we would let that unit have all the fun enjoy their day then we would be the ones that would have to clean everything up that kind of thingAnother one was when my post Commander would volunteer our soldiers to do things for civilians on weekends or whenever one of the biggest ones was when up in Washington if it got just even a quarter inch of snow people would try to drive who don't have a clue how end up in ditchesso a bunch of us guys from Minnesota Iowa and other states that had a lot of snow would go out and help get people off the roads we can tow the vehicles out that have to sign a waiver it was something we did for they community outside the basesWe also had a lot of flag teams we would help raise a flag during special events those were usually mixed units some from the air Force Navy and army we all get together for a month and that was our job to doThe only good thing about this it was mostly the civilian food they would always like to feed us

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Why is typecasting required in programming?

Acting is a part of story telling. Generally, you have about 2 hours to tell the story you want to tell.

One way to save time is to use characters that are easily recognized.Characters like the tough old cop, the wise old woman, the angry young man, the damsel in distress - the moment you see them, you know a lot about them without having to explain who they are, where they came from, what they want, etc. These things may be revealed in action and dialogue, but its optional.

From a show business perspective, it also saves time when casting a movie or TV show. Lets say we need to cast a villain. Who comes into your mind if I say the villain should be:A martial arts expert?

Brilliant, but crazy?A woman who is beautiful, but deadly?A warrior?

A cop gone bad?Its likely an actor or actress immediately comes to mind for each of these descriptions. If you have the money, you can contact one of the actors that immediately comes to mind, or you can cast an unknown actor that looks and/or acts like a well known actor.

From the actors perspective, if you know your type, you can narrow your audition efforts to characters that match your type. In my case, being over 50 years old, Id be wasting time auditioning for roles as an angry young man. Being male, white, bearded, a bit overweight, wearing glasses - I could be cast as a college professor, psychoanalyst, art dealer, etc

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Do blacks sometimes feel that white people ignore them when greeting?

"Sometimes?"I have had White people who I know, and who know me, "ignore" me when I encounter them in public. This usually happens when they are with their spouse/girlfriend, etc (Yes, it's nearly always men) and they don't want to introduce them to me.

This usual result in my shortening the length of the encounter and my "downgrading" the relationship that I have or had with the White person as it's nearly always an indicator of racist or prejudiced mindsets that I had somehow missed in our other encounters. As far other Black people: Some African Americans are annoyed or angered when obviously bigoted Whites attempt to ignore them in public. I couldn't care less personally as it's rare when that kind of person has anything of value to offer me.

If they want to avoid a conversation that's fine as I usually can't avoid conversation with foolish people and in this case they are willing to assist me with that. Frankly, since I'll be 50 this year, it's long since been what I think of others, and not what they think of me. If people chose to ignore me, then they are saving me valuable time that I could have wasted trying to figure out whether or they are someone who I could trust or who it would be worth wasting my time upon or with

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Do you feel obligated to speak to your neighbors if you notice them outside at the same time you are?

It depends on the culture of your neighborhood and city/town/village. Iu2019ve lived in rural Alaska, where itu2019s expected that you not only say hello to neighbors, but itu2019s acceptable for most neighbors to simply give a little knock on your front door and walk in to your home (itu2019s always a nice touch to have a pot of coffee on during these hours of the day). Iu2019ve also lived on a cul-de-sac in Anchorage, a midsize all-American city where you definitely say hello when neighbors are in their driveways or mowing their lawns.

Itu2019s the right thing to do. Now I live in a high rise apartment in Washington DC and take crowded public transportation to work each morning. When you live that close with so many people, you give each other space and privacy.

We might say u201chave a good dayu201d when leaving an elevator, but outside of that it would be rude to give too much attention to someone next door. What people often get confused is the u201cpolitenessu201d of a community based on these regional cultural nuance. But each of these communities that Iu2019ve lived in are full of warm, lovely, and friendly people.

If I needed something from my neighbors in DC, I have no doubt theyu2019d help, but I would need to ask. The extra privacy and anonymity of the city works well for me personally, but sometimes I miss my cul-de-sac neighbor bringing me extra Filipino BBQ from his Sunday family dinner just because

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Can hugging someone who is not your partner be considered cheating?

This term cheat/cheating comes up a lot on Quora.

Im guessing it may mean different things to different people. To me, as a senior citizen, cheating means to me that someone had sex with another person while they were in a mutually committed relationship with someone. There is no sort of cheated or almost cheated when this happens.

That is a very personal and serious encounter. This isnt holding hands or flirting with someone. Some people can be very possessive, even when not in an exclusive relationship.

They see someone having a cup of coffee with a co-worker, perhaps danced a dance with someone at a school function or went jogging with a member of the opposite sex. and they are worried about cheating. To me that is not cheating.

But each couple needs to discuss what they each think cheating consists of and agree on what is acceptable and what is not. If each of the couple cant agree on it, then perhaps they shouldnt be dating and referring to each other as boy and girl friends.Back to your question.

To me a friendly hug is not cheating. However, it might depending on what was going through in your mind during the hug. If your thoughts turned sexual during the hug, then you probably shouldnt have been doing that hug.

.

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What do you have to study to learn SaaS?

Iu2019m not sure you have to u2018studyu2019 anything in particular to learn SaaS.

There are many jobs that exist in large blue chip corporations or more enterprise level on premise software installations that also exist in SaaS based organisations.For example there are sales people, marketing, HR, IT, Software Developers, Product managers, finance teams and many more. If you want to follow a particular career path (lets say software developer) then something like Computer Science would be a good starting point, equally if you wanted to be a finance controller or accountant, then something finance related would be ideal.

If you were a software support technician for an ERP on premise solution, you would still encounter similar issues or questions from customers about the application as you would in a SaaS based company. u201cHow do I change my passwordu201d or u201cI canu2019t find the X,Y,Z buttonu201d. At least in SaaS companies, you donu2019t have to worry about the customeru2019s environment or why their database isnu2019t working because one of their own IT staff setup it up incorrectly.

You only have to worry about your own database environment in SaaS.If you wanted to start your own company and deliver it via SaaS, then find your strongest skills and start there and continue learning and learning and learning.