I grew up on a beautiful tree-lined street where towering Elm trees canopied the yards. One day a tree trimming company drove up the road marking every Elm with a bright red X. The following week they cut them all down, the branches and leaves thrown into a giant chipper. The street was bare. The shade gone. The cool breezes and sounds of birds disappeared. It was so quiet; not a squirrel's chatter or bird's song greeted us when we stepped out of the house. The town replaced the Elm trees with small oak and maple, which wouldn't cast shadow, provide shelter or shade for years. Today the threat of the Emerald Ash Borer is at the threshold of our county. But there's an incipient disease in the rural countryside that's a greater threat than all other tree diseases combined. It's erodible land versus the yellow Caterpillar.
This particular caterpillar takes down a tree in seconds. It can wipe out a tree line or decimate a timber with no regard to the years it took to mature. It's nerve center focuses on destroying every living plant in its path. It doesn't discern old growth hardwoods from fast growing scrub trees. Do you remember learning taxonomy; Kingdom, phylum, class, order, family, genus, species? Well, this yellow caterpillar isn't in the kingdom Animalia. It's a manufactured machine, its nerve center is the operator. This yellow caterpillar is a bulldozer. Eight dollar per bushel corn brought bulldozer's disease to our county. I thought the falling price of corn would stop the disease, but it hasn't. If anything, it's made otherwise reasonable people into fiends pushing over trees to eek out another row of corn.
Here in north-east Iowa a high percentage of the crop ground is erodible (click here for the Iowa Daily Erosion Project). Decades old trees, some centenarians, that once held ground in place, drank up excess water, provided habitat, shade, oxygen, beauty and so much more are pushed into gullies and piled at the edges of farm fields. Some farmers in our area don't find value in trees. They buy cheap land and 'sculpt' it to their needs. In the process destroyed habitats, uprooted trees, and the bare sloping hillside releases valuable top soil into waterways, never mind the toxins that follow after a crop is planted. Adding insult to injury, some of these farmers have received millions of dollars in government subsidies over the past ten years for maintaining crop ground. It's unfortunate, but often, this short-sighted nature passes down to the next generation, the destruction continues.
Having a passion for trees, especially since moving to this farm, it saddens us to see the vacant ground eroding where towering trees once stood. A previous owner of our farm hired a local 'sculptor' to clear this land. Uprooted trees filled a ravine, the remains mounded into piles for burning. We've planted orchard trees and over three hundred hardwoods with a direct seeding of Chestnut, Oak and Walnut. These will hardly mature in our lifetime, but the planting continues. Dutch Elm and Emerald Ash Borer have nothing on the yellow Caterpillar.