Posted by Janicholson on October 25, 2013 at 16:43:13 from (74.60.94.18):
In Reply to: posted by Texasmark1 on October 25, 2013 at 15:08:00:
They are insect galls. They are formed by a small wasp (usually) that lays an egg in the meat of the leaf. The egg has the chemistry to control leaf cell growth. the tree grows a bump that the larva eats as it gets bigger. The larva eventually drill out of the gall and mature to fly away. The crusty stuff is insect poop. Google insect leaf gall images. Plenty of trees are infested. Jim
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Today's Featured Article - Harvestin Corn in Southern Wisconsin: The Early Years - by Pat Browning. In this area of Wisconsin, most crops are raised to support livestock production or dairy herds in various forms. Corn products were harvested for grain, and for ensilage (we always just called it 'silage'). Silo Filling Time On dairy farms back in the 30's and into the first half of the 40's, making of corn silage was done with horses pulling a corn binder producing tied bundles of fresh, sweet-smelling corn plants, nice green leaves with ear; the
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