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Weed Identification and Control

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Wild Oat (Avena fatua)

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Control Strategies: Timely cultivation, selective grass herbicides, and use of competitive crops to suppress its growth. Impact on Crops: Reduces quality and yield, and is difficult to separate from cereal crops at harvest.

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Palmer Amaranth (Amaranthus palmeri)

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Control Strategies: Crop rotation, zero-tillage farming, and timely use of herbicides. Impact on Crops: Extremely competitive, rapid growth rate, and high seed production lead to reduced yields.

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Lambsquarters (Chenopodium album)

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Control Strategies: Mulching, cultivation before seeding, and post-emergence herbicides. Impact on Crops: Competes for nutrients and light, and can attract pests.

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Waterhemp (Amaranthus tuberculatus)

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Control Strategies: Herbicide application, cultivation, and cover crops to suppress emergence. Impact on Crops: Competes for water and nutrients, directly impacting crop yields.

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Henbit (Lamium amplexicaule)

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Control Strategies: Mulching, pre-emergence herbicides in fall, and proper garden sanitation. Impact on Crops: Competes for space, can be an issue in no-till systems where it grows unchecked.

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Johnsongrass (Sorghum halepense)

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Control Strategies: Deep tillage, herbicides, and crop rotation. Impact on Crops: Can host pests and diseases, aggressive spreader, and reduces harvest quality.

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Crabgrass (Digitaria spp.)

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Control Strategies: Pre-emergence herbicides, proper lawn maintenance, and manual removal. Impact on Crops: Competes for nutrients leading to reduced crop yields.

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Nutsedge (Cyperus spp.)

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Control Strategies: Proper drainage, timely cultivation, and herbicides targeting sedges. Impact on Crops: Aggressively competes for water and nutrients, reducing yields.

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Bindweed (Convolvulus arvensis)

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Control Strategies: Consistent deep tillage, use of cover crops, and systemic herbicides. Impact on Crops: Twines around crops, hindering their growth and access to sunlight.

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Pigweed (Amaranthus spp.)

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Control Strategies: Crop rotation, mulching, and post-emergence herbicides. Impact on Crops: Competes for water and nutrients, and may harbor pests and diseases.

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Dandelion (Taraxacum officinale)

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Control Strategies: Maintaining dense turf, selective broadleaf herbicides, and manual removal. Impact on Crops: Can crowd out desirable species in pastures and lawns.

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Russian Thistle (Salsola tragus)

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Control Strategies: Early control by herbicide application, cultivation to prevent seed set, and proper field sanitation. Impact on Crops: Consumes water and nutrients, leading to reduced yield.

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Quackgrass (Elymus repens)

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Control Strategies: Cultivation when young, glyphosate herbicide application, and crop rotation. Impact on Crops: Aggressive root system, makes land hard to work and reduces yield.

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Giant Ragweed (Ambrosia trifida)

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Control Strategies: Pre-emergence herbicides, cultivation, and mowing before seed set. Impact on Crops: Grows quickly, outcompeting crops for light and nutrients, and causes allergy issues.

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Kochia (Bassia scoparia)

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Control Strategies: Pre-plant tillage, pre-emergence herbicides, and crop rotation. Impact on Crops: Forms dense stands that compete for resources and can become tumbleweeds spreading seeds.

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Common Chickweed (Stellaria media)

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Control Strategies: Cultural control through mulching, post-emergence herbicides, and maintaining healthy turf. Impact on Crops: Can form dense mats, outcompeting crops for resources and light.

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Velvetleaf (Abutilon theophrasti)

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Control Strategies: Early season cultivation, pre-emergence herbicides, and hand-pulling. Impact on Crops: Competes for nutrients, water, and light, and can significantly reduce yields.

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Bermudagrass (Cynodon dactylon)

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Control Strategies: Proper lawn and pasture management, timely mowing, and use of pre- and post-emergence herbicides. Impact on Crops: Can create dense mats that outcompete crops and reduce yield.

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Canada Thistle (Cirsium arvense)

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Control Strategies: Frequent mowing, herbicide application, and use of competitive crops. Impact on Crops: Reduces crop yields and contaminates harvest.

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Morning Glory (Ipomoea spp.)

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Control Strategies: Use of landscape fabric or mulch, post-emergence herbicides, and manual removal. Impact on Crops: Vining growth habit that can smother crops and reduce yields.

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