We are improving our search experience. To check which content you have full access to, or for advanced search, go back to the old search.

Search

Please fill in this field.
Filters applied:
Earth sciences

Search Results

Showing 381-388 of 388 results

  1. Organic matter turnover in a sagebrush steppe landscape

    Laboratory incubations of 15 N-amended soils from a sagebrush steppe in south-central Wyoming indicate that nutrient turnover and availability have...

    Ingrid C. Burke, William A. Reiners, David S. Schimel in Biogeochemistry
    Article 01 January 1989

  2. The Effects on Spring Wheat Yields in the Cherdyn Region

    In this section we investigate the effects of both short-term climatic variations and long-term climatic changes on spring wheat yields in the...
    Martin L. Parry, Timothy R. Carter, Nicolaas T. Konijn in The Impact of Climatic Variations on Agriculture
    Chapter 1988

  3. Dynamics of C, N, P and S in grassland soils: a model

    We have developed a model to simulate the dynamics of C, N, P, and S in cultivated and uncultivated grassland soils. The model uses a monthly time...

    W. J. Parton, J. W. B. Stewart, C. V. Cole in Biogeochemistry
    Article 01 February 1988

  4. Carbon and nitrogen turnover in adjacent grassland and cropland ecosystems

    The effects of cultivation and soil texture on net and gross N mineralization, CO 2 evolution and C and N turnover were investigated using paired...

    David S. Schimel in Biogeochemistry
    Article 01 December 1986

  5. The response of the ‘green revolution’ to climatic variability

    The purpose of this research is to assess the climatic sensitivity of high yielding variety (‘HYV’) ‘green revolution’ wheat. Improved multiple...

    Patrick J. Michaels in Climatic Change
    Article 01 September 1982

  6. The response of the ‘green revolution’ to climatic variability

    The purpose of this research is to assess the climatic sensitivity of high yielding variety (‘HYV’) ‘green revolution’ wheat. Improved multiple...

    Patrick J. Michaels in Climatic Change
    Article 01 September 1982

  7. Report of work group shifting cultivation and traditional agriculture

    In many parts of the American tropics shifting cultivation has been the traditional form of agriculture for centuries. Such a system has provided the...
    S. R. Gliessman, J. D. H. Lambert, ... P. A. Sanchez in Nitrogen Cycling in Ecosystems of Latin America and the Caribbean
    Chapter 1982

  8. Nitrogen cycling in coffee plantations

    Nitrogen inputs to the coffee ecosystem are dominated by additions of fertilizer-N (100–300kg N ha-1 yr-1). Small nitrogen inputs from rains and...
    E. Bornemisza in Nitrogen Cycling in Ecosystems of Latin America and the Caribbean
    Chapter 1982
Did you find what you were looking for? Share feedback.