How would you handle this neighbor issue?

[Robert_in_NY]

Robert...
I would still like to know your method for controlling mold with such a lush canopy of leaves over the grapes. We Cut ours way back and still get mold as the summer progresses.
Ron

Are you positive its just a normal mold and not an actual disease?

 

[pacerron]

Are you positive its just a normal mold and not an actual disease?

Robert,
I just checked with my wife, who takes care of them, spraying and trimming.
She says they do fine until June or so when it usually gets rainy and wet around here for a period. Then the grapes begin to turn black and shrivel up.
A lot of them fall off. She has tried cutting the canopy way back this year as she read somewhere that the grapes were being shaded too much by the leaves. That is certainly wrong after looking at your great looking vines.

Our vines are Concord. We planted them about 15 years ago. The soil is primarily clay. The trellis runs north to south and we live on top of a hill so they get plenty of wind and sunshine. She trims them way back just as you described in your write up.
The supports are vertical wooden locust posts and high tensile fence wires for the 2 horizontals. We do get some grapes in the fall but not near as many as dry up or are pulled off by the white tail deer that roam this area.
I included a picture of what they look like now in your thread a few days ago.
We would appreciate any ideas you have as to the problem and solution.
Ron

 

[zonta223]

Robert,
I just checked with my wife, who takes care of them, spraying and trimming.
Ron

Can you describe your spraying plan........what chemicals when?

 

[pacerron]

Can you describe your spraying plan........what chemicals when?

She says she uses "Daconil"
First spray when the grapes first show.
Repeates every two weeks till the middle of July.
If they start turning black she gives up.

Fertalizer 12-12-12

 

[Chiriqui]

You sound like a nice guy. From your description I gather that they are not nice people. Why worry about it? Why spend time and money on their problem. Do what you're gonna do and forget about them. Of course, you don't want to inflict injury on them either. Grow your grapes and make some mighty fine wine.

 

[Robert_in_NY]

She says she uses "Daconil"
First spray when the grapes first show.
Repeates every two weeks till the middle of July.
If they start turning black she gives up.

Fertalizer 12-12-12

It sounds like black rot. I'm not familiar with daconil but elite 45df works well for me. I rotate by sprays though to help prevent resistance. I don't have a common set of sprays I use every year as each year is different depending on the weather. Rainy days are ideal for disease like black rot and phomopsis. I start my sprays at 1-3" shoot growth to prevent phomopsis and generally end up spraying every 10-14 days.

 

[Robert_in_NY]

You sound like a nice guy. From your description I gather that they are not nice people. Why worry about it? Why spend time and money on their problem. Do what you're gonna do and forget about them. Of course, you don't want to inflict injury on them either. Grow your grapes and make some mighty fine wine.

I don't make or even drink wine. I'm more of a juice guy.

 

[Jstpssng]

Thanks for the description of your operation, it was an interesting read. I was curious, what do you use for herbicides that doesn't also kill the grapevines? It sonded like you're doing a foliar app? Are you targeting mostly monocots, or using something specific to annuals?

 

[Robert_in_NY]

Thanks for the description of your operation, it was an interesting read. I was curious, what do you use for herbicides that doesn't also kill the grapevines? It sonded like you're doing a foliar app? Are you targeting mostly monocots, or using something specific to annuals?

Before the buds pop and leaf out I use roundup. If the leafs are out i change to gramoxone and aim. Aim will burn the suckers off without any uptake into the vine. A lot of guys on gravel ground use solocam as a pre-emergent.

 

[pacerron]

It sounds like black rot. I'm not familiar with daconil but elite 45df works well for me. I rotate by sprays though to help prevent resistance. I don't have a common set of sprays I use every year as each year is different depending on the weather. Rainy days are ideal for disease like black rot and phomopsis. I start my sprays at 1-3" shoot growth to prevent phomopsis and generally end up spraying every 10-14 days.

Robert,
Thanks alot. The leaves don't look as in this bulletin but the grapes sure do.

http://ohioline.osu.edu/hyg-fact/3000/pdf/HYG_3004_08.pdf

Probably too late for this year as the spray she has been using doesn't work.
We will get some of the other products and alternate their use as you suggest.
Ron