Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Sharon B. Hornick"'
Autor:
James F. Parr, Sharon B. Hornick
Publikováno v:
American Journal of Alternative Agriculture. 7:181-189
Agricultural research conducted in the United States since establishment of the U.S. Dept. of Agriculture and Land-Grant University System in 1862 has shown that regular and proper additions of organic materials are very important for maintaining the
Publikováno v:
American Journal of Alternative Agriculture. 7:5-11
Different chemical, physical, and biological properties of a soil interact in complex ways that determine its potential fitness or capacity to produce healthy and nutritious crops. The integration of these properties andine resulting level of product
Autor:
Sharon B. Hornick
Publikováno v:
American Journal of Alternative Agriculture. 7:63-68
Several factors can directly or indirectly affect the nutritional quality of crops. Among these are soil factors, such as pH, available nutrients, texture, organic matter content and soil-water relationships; weather and climatic factors, including t
Publikováno v:
Arid Soil Research and Rehabilitation. 3:149-170
Almost 40% of the world's land area is comprised of arid and semiarid regions that are inhabited by some 700 million people; approximately 60% of these drylands are in developing countries. Although these regions will continue to produce most of the
Autor:
James F. Parr, Sharon B. Hornick
Publikováno v:
American Journal of Alternative Agriculture. 2:64-68
The mining of sand and gravel deposits and excavation oftopsoil in urban areas have left extensive tracts of exposed subsoils that do not support plant growth because of adverse soil chemical and physical properties. Such degraded and marginal soils,
Autor:
Sharon B. Hornick
Publikováno v:
American Journal of Alternative Agriculture. 3:156-162
Crops grown on sand and gravel spoil areas are subject to temperature, moisture, and nutrient stresses due to the infertile, acidic, and coarse-textured properties of the spoil material. Additions of organic materials such as feedlot manure and sewag
Publikováno v:
Science News. 10/14/89, Vol. 136 Issue 16, p255-255. 1/6p.
Publikováno v:
American Journal of Alternative Agriculture; 1992, Vol. 7 Issue 3, pf1-f1, 1p
Publikováno v:
American Journal of Alternative Agriculture; 1995, Vol. 10 Issue 2, p74-81, 8p
Autor:
Parr, James F., Hornick, Sharon B.
Publikováno v:
American Journal of Alternative Agriculture; 1992, Vol. 7 Issue 3, p181-189, 9p