How ironic, I am having the same problem and wondered if the corn is so tall that the pollination is not as good as in shorter varieties.

I have been harvesting Silver Queen, King and Princess.
The Silver Princess has had good pollination.
The Silver King has had the best with very full kernels.
My Silver Queen ears are only half pollinated with half full ears and the pollen on the tassels is gone.
I too am disappointed.

Also, I have regularly sprayed for worms and noticed the Silver Princess and Silver King had very few worms in the ears but 80% of the Silver Queen had worms. I wonder if since it is a late maturing corn it has more time for the worms to develop and do damage.

I have some ears that the silk is still developing and no pollen so I know these will never be properly pollinated.
It is just on the Silver Queen.

Don't think you have a problem with big lush plants. Where the problem comes in is on drought stressed plants. There the silk is delayed relative to the tassels.

I've never seen a pollination problem in 50+ years growing corn if the plants aren't drought stressed and have plenty of nitrogen. But maybe you have something way out of whack that I've never seen. Sometimes we kill our plants with kindness.

OK, so I just looked at your blog. Your Sugar Dots is nitrogen deficient. Notice the yellow leaves and the bottom leaves dying. When corn is nitrogen deficient the bottom leaves die from the tip and center back. You can't grow good sweet corn with that level of N deficiency.

The Silver Queen looks better but not as big and lush as you seem to think. It could probably benefit from more N next year, too late this year.

I'm thinking fruitnut is pretty much right on. For the most part I do not irrigate in my vegetable garden, but will make an exception for the critical periods with corn if the weather is not cooperating. Given an otherwise healthy stand, that would be tassle and silk development.

We have had extreme amounts of rainfall lately so I know the Silver Queen is not starved for water. All last week and the week prior, we were getting downpours like what is seen in a tropical rain forest - at least 0.50 to 3 inches a day. I also irrigate with my rain barrel system and PVC pipe with holes by each corn stalk to ensure the water is delivered right to the zone it needs to be. So I think this eliminates a watering issue.

I knew that the Sugar Dots corn had the nitrogen problem. That is what is odd - I built that 4 x 20 box this year, filled it with compost from the facility, then tilled it all in good. Yes, the box is only six inches deep and I know I tilled in quite a bit of the clay that was below that - but next year I'll be filling in more compost.

However, the Silver Queen corn is growing in compost that is now a year old - but that box was 100% filled with the compost mix and there wasn't any mixing of clay underneath.

I have never known sweet corn to get as tall as the Silver Queen this year - or Peaches & Cream last year. Just seems like it is putting all of its energy making huge stalks and none into ear development. Then the pollen comes down and it isn't done "growing" yet.

I'm assuming that compost tea would be filled with nitrogen correct? That is the only form of fertilization that I do - and maybe I should actually water some of it into the ground. I even put a layer of mulched leaves over the top of the beds to keep the weeds out - thinking this also would provide some fertilizer as well.

Back at another house I owned before this, I grew Sugar Dots corn directly in the ground; just tilled up a grassy area and planted. The Sugar Dots corn did very well there and got to about five feet tall at the most and put on a bumper crop. But now that I have manicured raised beds with compost, they either seem to be deficient or.. I don't know. Just frustrating to see that more than 25% of my garden space this year was used on corn and just like last year, we may not get very much from them at all.

Now - the area that the Peaches & Cream corn was last year (same soil as where the Silver Queen is this year) - that is where I have the tomatoes. And as you saw in the pictures, the tomatoes are growing like crazy and are fully loaded with fruit. Never have I had such lush tomato growth before.

I too have had an excess of rain the past month or so. Well drained and well aerated soil will grow lush crops even with too much rain. Wetter areas will have problems. The corn will turn more yellowish and silking will not happen on weaker stalks.

Two of the Silver Queen corn plants now have silk on them.

For the past three days, I have been watering them with pure compost tea. I know it was mentioned it is too late to do so, but I figure it won't hurt to try to recover any possible corn I can get.

Just hate to tear it down with as good as it looks and with most stalks having two - and some with even three areas where ears of corn are attempting to develop.

I watch a show in the area called "Illinois Gardener" and someone called in with the same exact problem I have - tassels dropping pollen but no ears/silks.

The guy on the board said that the person planted it too close together. She planted 6 inches apart and rows 36 inches apart. Mine is a 12 inches apart and rows 18 inches apart.

Still haven't had a chance to get photos yet - been tearing apart a bathroom and redoing another one at the same time.

Here is a link that might be useful: BsnTech Gardening Blog

My sweet corn does best with rows 28 inches apart and 14 or so inches apart in the row.