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A Few Combinations Are Safest
All The Nitrogen From Clover
Amount Of Application
Buying Unmixed Materials
Composition Of Plant Not A Guide
Fertilizer For Grass
Maintaining Fertility
Method Of Applying Fertilizers
Similarity Of Requirements
The Multiplication Of Formulas


Crops And Methods For Soil Improvement

A Bit Of Arithmetic
A Clean Seed-bed
A Practical Test
A Southern Legume
A Three Years' Rotation
Acid Phosphate
Acquaintance With Terms
Adaptation To Eastern Needs
Affecting Physical Condition
Alsike Clover
Amount Of Manure
Amount Per Acre
An Excess Of Nitrogen
An Old Succession Of Crops

Composition Of Plant Not A Guide

It has been pointed out that a
chemical analysis of a soil is not a dependable guide in the selection
of a fertilizer. Years ago the theory was advanced that the analysis of
the crops desired should be a guide, but it has proved nearly
worthless. This theory does not take into account the soil's supply of
plant-food. Moreover, a certain crop may demand a large supply of an
element at a time of the year when the soil's supply is inactive. The
need of nitrogen for grass in the early spring, before nitrification in
the soil is active, is an illustration. Let the causes be what they
may, the fertilizer formulas that call for plant-food in a fertilizer
in the same proportions that it is found in plants are disappointing in
their results. The analysis of the plant is not a dependable index.

Next: The Multiplication Of Formulas

Previous: Buying Unmixed Materials

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