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TILLAGE

An Excess Of Nitrogen
Controlling Root-growth
Cultivation Of Plants
Desirable Physical Condition Of The Soil
Elimination Of Competition
Method Of Plowing
Subsoiling
The Breaking-plow
The Disk Harrow
Time Of Plowing
Types Of Plows

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Crops And Methods For Soil Improvement


A Bit Of Arithmetic
A Clean Seed-bed
A Few Combinations Are Safest
A Practical Test
A Southern Legume
A Three Years' Rotation
Acid Phosphate
Acquaintance With Terms
Adaptation To Eastern Needs
Affecting Physical Condition
All The Nitrogen From Clover
Alsike Clover
Amount Of Application
Amount Of Manure



An Excess Of Nitrogen








Too much nitrogen, due to heavy manuring or
other cause, produces an excessive growth of stalk or straw, at the
expense of grain production, in the case of corn, wheat, and other
cereals. It produces a rank growth of potato vines and partial failure
of the crop of tubers. It produces a tender growth of straw or vine
that invites injury from fungous diseases. It is the rule that soils
have a deficiency in nitrogen, but when there is an excess, the best
cure comes through use of such crops as timothy, cabbage, and ensilage
corn. Heavy applications of rock-and-potash fertilizers assist in
recovery of right conditions, but are not wholly effective until
exhaustive crops have removed some of the nitrogen.





Next: Desirable Physical Condition Of The Soil

Previous: Method Of Applying Fertilizers



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