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Alabama

I have been pollinating my pumpkins for two weeks and cant get one to pollinate I had this problem late in the season last year I was wondering if anyone knew what the problem was? thanks

7/10/2011 12:48:30 AM

Buffalo, New York

outside temps at time of pollination?

7/10/2011 2:13:15 AM

Springfield, Missouri

http://www.bigpumpkins.com/MsgBoard/ViewThread.asp?b=19&p=398745

7/10/2011 4:00:25 AM

Littleton, Colo

Cover them with a small styrofoam cooler. Cover the styro cooler with a piece of silver foil( what you put in your front car windshield) I even use some ice packz under the cooler if it'z going to be hot out. Alwayz worked for uz.

7/10/2011 9:31:34 AM

Did you ever think it might be you? LOL

7/10/2011 10:55:59 AM

Las Cruces NM

I'm with it being that souther issue called heat. But I haven't found a cure yet but am taking this chance to experiment.

Don't think I can buy it is due to lack of nutrients due to trasnpiration issues. In heat, plants tanspires even more, bringing up even more neutrients with every drink. It just doesn't maks sence such a process cause a lack of nutriants. It that was true, due to transpitation, the cooler trick coudn't work. Also, I have cured my flagging problems but polination problem persist in heat -- raises more doubt. I've also witnessed parthenocarpy occure in heat so would seem it really has something more to do with polenation process. Perhaps polen tubes shrink/fail to elongate, or polen does not remain viable long enough in heat to complete the process.

7/10/2011 3:24:29 PM

Wi

Could be too high of nitrogen. I had same problem last year with too much manure and foliar feeding. Stopped fertilizing and then one took.

7/10/2011 5:15:55 PM

Springfield, Missouri

The transpiration doesn't cause lack of nutrients it causes lack in sugar.

"Photorespiration can occur when carbon dioxide levels are low, for example, when the stomata are closed to prevent water loss during drought. In most plants, photorespiration increases as temperature increases. Photorespiration produces no ATP and leads to a net loss of carbon and nitrogen (as ammonia), slowing plant growth.

Potential photosynthetic output may be reduced by photorespiration by up to 25% in C3 plants"

I use a shade tarp it cools and blocks uv rays, you can choose a between a wide range of how much light goes through the tarp.

Logan

7/10/2011 5:28:51 PM

Springfield, Missouri

Sorry here is the link I ment to post

http://en.wikipedia.org/wiki/Photorespiration

7/10/2011 5:29:54 PM

Las Cruces NM

Very nice read! Thanks!

7/10/2011 9:40:05 PM