|
|
Leguminous plants benefit by potash
|
523
|
|
|
Nitrogenous manures may be hurtful
|
523
|
|
|
Clover sickness
|
524
|
|
|
Alternate wheat and bean rotation
|
524
|
|
|
Beans
|
525
|
|
|
Manure for beans
|
525
|
|
|
Relative value of manurial ingredients
|
526
|
|
|
Gypsum as a bean manure
|
526
|
|
|
Effect of manure on composition of crop
|
527
|
|
|
Peas
|
527
|
|
|
Hops
|
528
|
|
|
Cabbages
|
528
|
|
|
|
APPENDIX TO CHAPTER XXIII.
|
|
|
|
Experiments on bean-manuring
|
530
|
|
|
|
CHAPTER XXIV.—ON THE METHOD OF APPLICATION, AND ON THE MIXING OF MANURES
|
|
Equal distribution of manures
|
531
|
|
Mixing manures
|
532
|
|
Risks of loss in mixtures
|
533
|
|
|
Loss of ammonia
|
533
|
|
|
Effects of lime on ammonia
|
535
|
|
|
Loss of nitric acid
|
536
|
|
|
Reversion of phosphates
|
537
|
|
Manurial ingredients should be applied separately
|
538
|
|
|
|
CHAPTER XXV.—ON THE VALUATION AND ANALYSIS OF MANURES.
|
|
Value of chemical analysis
|
539
|
|
Interpretation of chemical analysis
|
539
|
|
Nitrogen
|
540
|
|
Phosphoric acid
|
541
|
|
|
Importance of mechanical condition of phosphate
|
542
|
|
Potash
|
542
|
|
Other items in the chemical analysis of manures
|
543
|
|
Fertilisers and Feeding Stuffs Act
|
543
|
|
Different methods of valuing manures
|
544
|
|
Unit value of manurial ingredients
|
544
|
|
Intrinsic value of manures
|
545
|
|
Field experiments
|
545
|
|
Educational value of field experiments
|
547
|
|
Value of manures deduced from experiments
|
548
|
|
Value of unexhausted manures
|
549
|
|
Potential fertility of a soil
|
549
|
|
Tables of value of unexhausted manures
|
551
|
|
|
|
APPENDIX TO CHAPTER XXV.
|
|
NOTE
|
|
I.
|
Factors for calculating compounds from manurial ingredients
|
553
|
|
II.
|
Units for determining commercial value of manures and cash prices of manures
|
554, 555
|
|
III.
|
Manurial value of nitrogen and potash in different substances
|
556
|
|
IV.
|
Comparative manurial value of different forms of nitrogen and potash
|
557
|
|
V.
|
Lawes' and Gilbert's tables for calculating unexhausted value of manures
|
559
|
|
|
|
CHAPTER XXVI.—THE ROTHAMSTED EXPERIMENTS.
|
|
Nature of experiments on crops and manures
|
561
|
|
|
Soil of Rothamsted
|
561
|
|
Table I. List of Rothamsted field experiments
|
562
|
|
