term variable
term
variable
agricultural diseases animal diseases plant diseases agricultural production agricultural chemicals agricultural commodities agricultural cooperatives agricultural equipment agricultural inputs agricultural management agricultural outputs agricultural production systems agricultural productivity agricultural products agricultural resources agricultural wastes animal production animal yields crop yields dry farming energy resources fallow food production forest production irrigated agriculture material resources mechanized agriculture mineral resources natural resources no tillage non-renewable resources organic farming pollutants primary production renewable resources resource depletion resource exploitation resource inventory resource scarcity risk management rotation set asides slash and burn subsistence agriculture toxic materials water resources biogeochemical cycles carbon cycle methane cycle nitrogen cycle nitrous oxide cycle phosphorus cycle sulfur cycle biological processes aerobic processes anaerobic processes fermentation photosynthesis reproduction respiration biota animals microorganisms plants chemical processes fixation hydration ion exchange oxidation reduction release weathering ecological dynamics adaptation competition distributions extinction mutation selection succession survival nutrients micronutrients vegetation flowering fruiting plant characteristics plant performance plant yield
Need help or information? Contact SEDAC User Services About SEDAC Acknowledgments
Copyright © 1997-. The Trustees of Columbia University in the City of New York.
Privacy Policy and Important Notices
This site is for review only. Use data and services at your own risk.