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Variation in composition of crops
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490
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Absorption of plant-food
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490
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Fertilising ingredients lodge in the seed
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491
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Forms in which nitrogen exists in plants
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491
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Bearing of above on agricultural practice
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492
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Influence of excessive manuring of crops
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492
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CHAPTER XXIII.—MANURING OF THE COMMON FARM CROPS.
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Cereals
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493
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Especially benefited by nitrogenous manures
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494
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Power of absorbing silicates
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494
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Barley
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495
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Period of growth
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495
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Most suitable soil
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496
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Farmyard manure not suitable
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497
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Importance of uniform manuring of barley
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497
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Norfolk experiments on barley
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497
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Proportion of grain to straw
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498
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Wheat
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499
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Rothamsted experiments
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500
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Continuous growth
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500
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Flitcham experiments
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500
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Oats
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501
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A very hardy crop
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502
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Require mixed nitrogenous manuring
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502
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Arendt's experiments
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503
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Avenine
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503
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Quantities of manures
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504
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Grass
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504
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Effect of manures on herbage of pastures
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505
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Influence of farmyard manure
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506
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Influence of soil and season on pastures
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507
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Manuring of meadow land
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508
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Bangor experiments
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508
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Norfolk experiments
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509
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Manuring of permanent pastures
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509
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Roots
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510
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Influence of manure on composition
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512
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Nitrogenous manures increase sugar
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512
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Amount of nitrogen recovered in increase of crop
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513
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Norfolk experiments
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513
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Manure for swedes
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514
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Highland Society's experiments
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515
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Manuring for rich crops of turnips
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516
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Experiments by the author on turnips
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516
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Potatoes
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517
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Highland Society's experiments
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518
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The Rothamsted experiments
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519
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Effect of farmyard manure
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520
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Manuring of potatoes in Jersey
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521
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The influence of manure on the composition
|
521
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Leguminous crops
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522
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