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A Practical Test
Determining Lime Requirement
Irrational Use Of Lime
Soil Acidity
The Litmus-paper Test
The Unproductive Farm
Where Clover Is Not Wanted


Crops And Methods For Soil Improvement

A Bit Of Arithmetic
A Clean Seed-bed
A Few Combinations Are Safest
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
Amount Per Acre
An Excess Of Nitrogen

Where Clover Is Not Wanted

The ability to grow heavy red clover is a
practical assurance that the soil's content of lime is sufficiently
high. When clover fails on account of a lime deficiency, the work of
applying lime may not be escaped by a shift in the farm scheme that
permits the elimination of clover. The clover failure is an index of a
condition that limits the yields of all staple crops. The lack of lime
checks the activity of bacteria whose office it is to prepare
plant-food for use. The stable manure or sods decompose less readily
and give smaller results. Soil poisons accumulate. Mineral plant-food
in the soils becomes available more slowly. Physical condition grows

The limitations of the value of manure and commercial fertilizers
applied to land that has a lime deficiency have illustration in an
experiment reported by the Cornell station:

The soil was once a fertile loam that had become very poor. A part was
given an application of lime, and similar land at its side was left
unlimed. The land without lime and fertilizer of any kind made a yield
of 1824 pounds of clover hay per acre. A complete fertilizer on the
unlimed land made the yield 2235 pounds, and 15 tons of manure on the
unlimed land made the yield 2091 pounds.

Where lime had been applied, the unfertilized land yielded 3852 pounds
per acre, the fertilized, 4085 pounds, and the manured, 4976 pounds.
The manure and fertilizer were nearly inactive in the acid soil. The
lime enabled the plants to obtain benefit from the plant-food.

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