Suchergebnisse

Not Available ; The factors, which determine the availability of agricultural products at the local level (farm, village), are environmental conditions and management. The environment includes biophysical factors (climate, soil, pests, land available…), while management encompasses the decisions taken by farmers themselves. Management decisions are determined by the knowledge of the interactions between the environment, the characteristics of crops and animals, technology, economic factors and the institutional context (including customs, government rules, etc). By definition, economic factors play a relatively minor role for subsistence farmers. Among the listed factors, weather remains the largest source of variability of farm outputs, directly and indirectly (pests). Depending on the level of development, roughly 20 to 80% of the inter-annual variability of yields stems for the variability of weather. Losses due to pests, diseases and weeds are normally around 15% (Oerke et al., 1994). Post-harvest losses are also of the same order of magnitude. Extreme agrometeorological events are factors, which often are at the same time rare (low statistical frequency) and characterised by high intensities. They include for instance large pest outbreaks, fire, torrential rains, tropical cyclones etc. They can provoke massive destruction of infrastructure, crops, livestock, fishing gear, etc. and the loss of human life (Gommes, 1999a, 1999c). ; Not Available

"This FM supersedes FM 6-15, 25 March 1970, including all changes. In addition this FM rescinds DA Form 3678 (January 1971)." ; Issued Aug. 30, 1978. ; Mode of access: Internet.

The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government. ; This report contains summaries of research projects in the Department of Meteorology. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical reports, and thesis abstracts.

The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or the U.S. Government. ; This report contains summaries of research projects in the Department of Meteorology. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, technical reports, and thesis abstracts.

The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or U.S. Government. ; This report contains summaries of research projects in the Department of Meteorology which were carried out under funding of the Naval Postgraduate School Research Program. A list of recent publications is also included which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports.

The views expressed in this report are those of the authors and do not reflect the official policy or position of the Department of Defense or U.S. Government. ; This report contains project summaries of the research projects in the Department of Meteorology. A list of recent publications is also included, which consists of conference presentations and publications, books, contributions to books, published journal papers, and technical reports. Thesis abstracts of students advised by faculty in the Department are also included.