Page 91 - Calculating Agriculture Cover 20191124 STUDENT - A

CH 9] Calculating Agriculture 9-1

CHAPTER 9 NOTE TO INSTRUCTOR: Solutions

to Homework are in that section.
Avg. time for Students to read &
complete homework: 7 hrs.

LAND, SOILS and FERTILIZERS

Objectives

After mastering the material in this chapter, you will be able to:

 Delineate between a Principal Meridian and Base Line
 Know the linear and areas to chains, rods, feet, miles, acreage
 Define a property Description, ranges, townships, sections and portions of
sections.
 Determine acreages from a property description per the PLSS system of land
measurement.
 Calculate Slopes
 Determine Soil types using the Soil Texture Triangle
 Determine soil moisture and calculate PWP
 Determine nutrient contents in soils and nutrient requirements of specific crops
 Calculate the nutrient uptake for crops

LAND

Underneath all is the land. It is the most valuable resource because of what can be done with it and the
wealth it can bring when properly managed. No farmer will intentionally destroy their land because it
brings them their livelihood.
Understanding land measurement and area
is the first step in figuring yields, fertilizer
amounts, power requirements, spraying
amounts, and many other cropping problems.
Our systems of measurement have been
developed over time with trial and error,
tradition, and science. For instance, an acre was
said to be the land area which one ox could
plow in one day, and today we know that the
acre contains 43,560 square feet, and if square is
208.7 ft x 208.7 ft. The meter, a linear
measurement, is one ten-millionth of the
distance from the earth’s equator to the North or
South Pole.
We use two systems of linear measurement,
English and Metric. The English system uses 9
inches, feet, yards, miles, and other Figure 9.1 George Washington's survey of the site
of Belhaven (Alexandria) Virginia.

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