Directory UMM :Data Elmu:jurnal:A:Agriculture, Ecosystems and Environment:Vol80.Issue1-2.Aug2000:
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Set-aside programs of the European government have a double impact on the regional soil erosion risk in agricultural regions: (1) there is less area susceptible to soil erosion and
The productivity issues related to soil constraints on crop growth largely concern the soil water balance and the effects of temperature on soil organic matter and plant
Coffee cultivar, age of coffee stand, species richness, shade tree density, basal area, slope and aspect did not have significant effects on coffee yields.. Shade tree cover had
A limiting resource is a resource of which a small change in its availability affects biomass production (i.e. resources in states 1 and 2 of the response curve).. The degree
The chlorophyll content, photosynthetic activity and stomatal conductance of flag leaves of spring wheat plants exposed to elevated CO 2 and elevated O 3 , singly and in
Based on the results of these studies it was concluded that the local and regional specialization of farms is one important reason for the high losses of plant nutrients: one type
Although the plant species number in grass strips decreased clearly during succession, changes in species richness of leafhoppers were not so great.. Factors affecting the
The book starts with a brief history of conserva- tion research in the Pacific Northwest and describes the region and the specific problems that developed with the introduction
