Precision fertilizer applications systems take into consideration the different fertility levels within an agricultural field and integrate the use of soil testing with ________.
A) computer controlled variable rate spreaders
B) computer mapping
C) intensive soil sampling
D) geo-positioning systems
E) all of the above
Question 2
In the United States, the government lead agency for most soil survey work is the ________.
A) Natural Resources Conservation Service
B) Agency for Soil Resource Inventory
C) Department of the Interior
D) National Bureau of Soil Survey
E) Department of Land Reclamation
Negative feedback as a mechanism by which homeostatic control systems operate.
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