What is the best fungicide to use to fight plant disease or should you use different types of fungicide?

Question

In the world of giant pumpkin growing some of the worlds top growers use many types of fungicide.
which are the best types to use? systemic or contact fungicide.
should you use both types? would a systemic fungicide stunt the growth of the pumpkin? how often should you use fungicide? any help would be great thanks for any answers.

Answer 1

When dealing with fungicides you need to understand what can happen.
On my roses for example I try and switch the chemical compounds to resist the "Resistence"

.................Fungicide Resistance......................
http://www.apsnet.org/education/IntroPlantPath/Topics/fungicides/default.htm
Fungicide resistance is a stable, heritable trait that results in a reduction in sensitivity to a fungicide by an individual fungus. This ability is obtained through evolutionary processes. Fungicides with single-site mode of action are at relatively high risk for resistance development compared to those with multi-side mode of action. Most fungicides being developed today have a single-site mode of action because this is associated with lower potential for negative impact on the environment, including non-target organisms.

When fungicide resistance results from modification of a single major gene, pathogen subpopulations are either sensitive or highly resistant to the pesticide. Resistance in this case is seen as complete loss of disease control that cannot be regained by using higher rates or more frequent fungicide applications. This type of resistance is commonly referred to as "qualitative resistance."
...............
Below is a list of chemicals used in fungicides and their purpose.
Home Garden Fungicides
http://www.ksl.com/?nid=194&sid=39290

Answer 2

This Site Might Help You.

RE:
What is the best fungicide to use to fight plant disease or should you use different types of fungicide?
In the world of giant pumpkin growing some of the worlds top growers use many types of fungicide.
which are the best types to use? systemic or contact fungicide.
should you use both types? would a systemic fungicide stunt the growth of the pumpkin? how often should you use fungicide? any help...

Answer 3

Wagner Bettiol, a scientist from Brazil, found that weekly sprays of milk controlled powdery mildew in zucchini just as effectively as synthetic fungicides such as fenarimol or benomyl. Not only was milk found to be effective at controlling the disease, it also acted as a foliar fertilizer, boosting the plant's immune system. In his experiments with zucchini plants, Bettiol found that a weekly spray of milk at a concentration of at least 10% (1 part milk to 9 parts water) significantly reduced the severity of powdery mildew infection on the plants by 90%.

Paul James, master gardener and host of Gardening by the Yard says this: "Yes, actually, I did use a milk-and-water solution to control powdery mildew on cucumbers a few years back, and it worked great. Mix 1 cup of milk with 9 cups of water. Put the solution in a sprayer and spray the entire plant including theundersides of the leaves. Do this twice a week and your powdery mildew problem should disappear.
Milk works in two ways: It has a germicidal effect--it kills the fungal spores-- and it also appears to stimulate plants in such a way that they become more resistant to the disease. In recent university tests, the milk and water spray was found to be more effective than the two most popular synthetic fungicides on the market today. Using milk as a fungicide is not new. I remember seeing my grandfather using it more than 40 years ago."

Any kind of milk can be used but Paul Crisp (University of Adelaide, Australia), recommends using dry-milk powder—15 grams for every liter of water. So far, he finds, this formulation appears to work on all surface mildews. It's best to use milk on sunny days because they need the sun's light to kick-start their mildicidal action.

David Bruer, formerly a professor of enology (winemaking), likes to alternate using different organic agents such as mik: (emulsified canola oil and bicarbonate once a week and then moving to a spray of whey and then seaweed extract the next cycle) because they appear to offer different modes of action in killing mildew. He is reluctant to use one organic fungicide exclusively saying: "That might make it easy for the mildew to develop resistance to control."*

Good luck! Hope this helps.

Answer 4

Most are targeted to fight a certain problem, do not use very much of the general, fights everything stuff.

Answer 5

Sulfur for the garden. And some added dryness that you can bring on by trimming off all leaves and stems that aren't carying buds by now

Answer 6

Sage tisane.Immerse sage leaves in hot water, allow to cool ,strain, then pour into a spray bottle.