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Penn State Cooperative Extension Publications

379 matches found for All Records in Extension Publications

Results 81 - 85 of 379

  1. Agronomy Facts 5: Quackgrass Management: An Integrated Approach [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Quackgrass is a widespread, persistent, cool-season, grassy weed found in Pennsylvania row and forage crops. This competitive perennial grass can reduce crop yields up to 95 percent. It can be managed with a consistent integrated program combining preventive, cultural, mechanical, and chemical methods."

  2. Agronomy Facts 60: Nutrient Management Planning - Overview [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Nutrient management traditionally has been concerned with optimizing the economic returns from nutrients used to produce a crop. More recently, nutrient management also has begun to address ways to minimize the negative impact of nutrients on the environment. Programs such as the Chesapeake Bay Program and the Nutrient Management Act in Pennsylvania have focused attention on improving nutrient management on Commonwealth farms."

  3. Agronomy Facts 61: Wirestem Muhly Management in Agronomic Crops [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Wirestem muhly is a perennial grass species that can be problematic in conservation tillage production systems throughout Pennsylvania and the Northeast. It is a particular problem in no-till corn and soybean production, but it can also be troublesome in orchards, in nursery and vegetable crops, on roadsides and streambanks, and in other areas with rich, moist soils. It is native to America and can be found in many areas of the midwestern United States from South Dakota to Missouri and eastward to Virginia and Maine."

  4. Agronomy Facts 62: Weed Management in Pasture Systems [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Weeds are troublesome in many ways. They reduce yield by robbing crops of water, light, space, and soil nutrients. Weeds can replace desirable grass species, filling in gaps or voids and reducing yield and overall quality of pasture and forages. Weeds can produce allelopathic substances that are toxic to crop plants. In addition, plants such as poison hemlock (Conium maculatum), white snakeroot (Eupatorium rugosum), and black locust (Robinia pseudoacacia) have toxic properties that can cause livestock injury or loss under certain circumstances. To plan an effective weed management program, a producer must be able to identify weeds and understand how weed biology and ecology affects where weeds are found and their value or detriment."

  5. Agronomy Facts 63: Diagnosing Soil Compaction using a Penetrometer (soil compaction tester)
    Source: Department of Crop and Soil Sciences Publications

    "Soil compaction is a serious concern for farmers in Pennsylvania. Soil compaction can easily reduce crop yields by 10 percent, and can lead to water and soil quality degradation due to increased runoff and soil structure destruction. The continuous consolidation of farms means that herds are growing, more forage is harvested per farm, more manure is being produced, larger equipment is used to spread manure and harvest and transport forages and grain, and the opportunity to tailor field operations to optimum soil conditions for traffic is decreasing. Compaction is therefore an issue that will likely increase in importance in the years to come."

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