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16 matches found for clearfield county conservation in Extension Publications

Results 1 - 10 of 16

  1. 100% Conservation Tillage Series: Crop Rotations and Conservation Tillage [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Crop rotations increase crop yields by improving soil conditions and reducing weed and insect populations. Rotations also help producers use conservation tillage successfully. A well-planned crop-rotation system can help producers avoid many of the problems associated with conservation tillage, such as increased soil compaction, perennial weeds, plant diseases, and slow early season growth. This publication reviews the effects of crop rotations on conservation-tillage crop production and provides examples of successful rotations used by crop producers in Pennsylvania."

  2. 95% Conservation Tillage Series: An Introduction to Weed Management for Conservation Tillage Systems [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "This fact sheet discusses ways to manage weeds and other vegetation in conservation tillage systems using cultural, mechanical, and chemical control tactics."

  3. 83% Conservation Tillage Series: Nutrient Management in Conservation Tillage Systems [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "To understand soil fertility and nutrient management in conservation tillage systems, we need to recognize the unique conditions in these systems that influence nutrient behavior and management. One of the most important functions of conservation tillage systems is the maintenance of crop residues on the soil surface to protect the soil from erosion."

  4. 83% Agronomy Series #133: Cambic Horizons in Pennsylvania Soils [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Cambic horizons are subsurface soil layers of pedogenic change without appreciable accumulation of illuvial material (clay, Fe + Al + humus, carbonate or gypsum), and are part of the USDA Natural Resources Conservation Service?s (formerly the USDA Soil Conservation Service) Soil Classification System "Soil Taxonomy"."

  5. 76% Conservation Tillage Series: Soil Compaction and Conservation Tillage [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Soil is a complex medium, but for simplicity we can think of it as a combination of solid mineral and organic particles and pore space. Pore space allows for air and water storage and movement in soils. Compaction squeezes the soil and, since solids do not compress, pore space is reduced. A footprint or wheel track rut in a field, for example, signals compaction."

  6. 76% Conservation Tillage Series: Cover Crops for Conservation Tillage Systems [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Producers seed cover crops to provide a soil cover or barrier against soil erosion. In addition, cover crops can improve the soil by adding organic matter, nutrients, and stability and by acting as scavengers to trap leftover nutrients that otherwise might leach out. Cover crops are used as ground cover, mulches, green manure, nurse crops, smother crops, and forage and food for animals or humans. Cover crops can be annual or perennial species, including certain legumes, grasses, and non-leguminous dicots."

  7. 76% Conservation Tillage Series: Economics of Conservation Tillage [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "There are many potential economic advantages for reducing the number of tillage operations for crop enterprises. These include: 1) lower fuel costs due to fewer trips over the field, 2) reducing the amount of tillage equipment needed, which results in lower machinery investment, 3) lower labor requirements, which reduce hired labor costs or free up operator time for other farm operations, 4) reducing soil loss from water and wind erosion, and 5) conserving soil moisture."

  8. 58% Agronomy Series #142: Pennsylvania Soil Survey History [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "This publication celebrates the centennial (1899-1999) of the United States Cooperative Soil Survey Program and documents some historical aspects of the soil survey history of Pennsylvania. In 1986, Dr. Robert Cunningham et al. (1986), prepared a Penn State Agronomy Series (No. 90) publication which was a collection of papers by a number of authors on various aspects of the soil survey in Pennsylvania. That publication did not get wide distribution and is reproduced in this publication as Chapters 3-8. In addition, Chapter 2 has been added to document the initiation and development of the Penn State Soil Characterization Laboratory. The laboratory was the original focus of the Basic Soils Inventory Program within the Penn State Agronomy Department and has contributed greatly to the Cooperative Soil Survey Program in Pennsylvania. In Pennsylvania, the Cooperative Soil Survey Program includes the USDA Natural Resources Conservation Service (NRCS), formally the USDA Soil Conservation Service (SCS), the Pennsylvania Department of Environmental Resources (now the PADEP), the Pennsylvania Department of Agriculture, and the Penn State University College of Agricultural Sciences."

  9. 58% Agronomy Series #145: Pennsylvania State University Soil Characterization Laboratory Database System Documentation [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Soils have been sampled and analyzed in Pennsylvania for characterization since 1954. The initial sampling was done by the USDA Soil Conservation Service (SCS) now known as the USDA Natural Resources Conservation Service (NRCS). Subsequent samplings have been done by the Penn State Soil Characterization Laboratory, US Environmental Protection Agency (EPA), and the NRCS. Presently, 949 pedons (profiles) have been collected and analyzed. An account of the history of the sampling is given in Ciolkosz (1998). Initially the data (site, horizon, and laboratory) was available in hard copy printed form. Since the development of the computer, particularly the PC with large data capacities, the Pennsylvania analysis system and data have been computerized (see Ciolkosz, 2000; Ciolkosz and Thurman, 1992, 1994; Thurman et al., 1994). In order for a computer system to have longevity as it is modified and updated by computer programmers, the data system must be documented. Thus, the objective of this publication is to document the Penn State University Soil Characterization Laboratory Database System."

  10. 58% Soil Management Research Reports: Tillage Evaluation Study Landisville, Lancaster County [pdf]Get Acrobat Reader
    Source: Department of Crop and Soil Sciences Publications

    "Research in the early 1980?s showed that no-till produced lower yields than conventional till (moldboard or chisel plowed) at the Penn State Southeast Agricultural Research and Extension Center. However, research from similar agroecological zones shows no yield decrease in no-till corn compared to conventional tillage. Although the benefits of no-till have been confirmed in many studies in different parts of the USA, only 8% of the planted acres was no-tilled in Lancaster County in 2000, while 91% of the planted acres was not under conservation tillage (i.e. it had less than 30% crop residue at the surface at planting). Conservation tillage has important benefits for the environment, but if yields are not competitive its adoption will be inhibited."

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