The Fertility of the Land: a Summary Sketch of the Relationship of Farm-Practice to the Maintaining And Increasing of the Productivity of the Soil
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Average computed value of excrements of sheep.
Pens 1, 2 and 3 $3.64 per ton.
" 4,5 " 6 4.97 " " Arerage of all $4. .30 " " Sheep, Calf and Pig Manure. 169 TABLE XLIII.
Three sheep, fed 33 2-3 days standing on galvanized pans; weight of excrements, 723 lbs.
(Bull. 27, Cornell Exp. Sta., 1891.) Per cent. Per ton.
Nitrogen 1. at 15 cents, $3.00 Phosphoric acid 08 ' 7 " .11 Potash 1.21 " i.5 " 1.09 $4.20 TABLE XLIV.
Average percentage of fertilizing elements recovered in all experiments.
Nitrogen,... ^ Phos. acid, i Potash, i Sheep 62 .73 .66 Calves 5G .39 .63 Pigs 80 .73 .80 The preceding tables show that the total values and the percentages of fertilizing constituents vary, as might be expected. The percentage recovered with swine is larger than with sheep and calves. This would seem to indicate that swine digest and assimi- late a larger amount of the carbohydrates and a less amount, taken together, of the other constituents, than either sheep or calves do. The amount of fer- tilizing elements recovered is dependent on so many conditions, as the power to assimilate food, the age and species, and the kind and quantity of surplus products produced by the animal, that only a general average can be reached, which must be amended as experiments throw more light on the subject.
What to read after The Fertility of the Land: a Summary Sketch of the Relationship of Farm-Practice to the Maintaining And Increasing of the Productivity of the Soil?
You can find similar books in the "Read Also" column, or choose other free books by Isaac Phillips Roberts to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Average computed value of excrements of sheep.
Pens 1, 2 and 3 $3.64 per ton.
" 4,5 " 6 4.97 " " Arerage of all $4. .30 " " Sheep, Calf and Pig Manure. 169 TABLE XLIII.
Three sheep, fed 33 2-3 days standing on galvanized pans; weight of excrements, 723 lbs.
(Bull. 27, Cornell Exp. Sta., 1891.) Per cent. Per ton.
Nitrogen 1. at 15 cents, $3.00 Phosphoric acid 08 ' 7 " .11 Potash 1.21 " i.5 " 1.09 $4.20 TABLE XLIV.
Average percentage of fertilizing elements recovered in all experiments.
Nitrogen,... ^ Phos. acid, i Potash, i Sheep 62 .73 .66 Calves 5G .39 .63 Pigs 80 .73 .80 The preceding tables show that the total values and the percentages of fertilizing constituents vary, as might be expected. The percentage recovered with swine is larger than with sheep and calves. This would seem to indicate that swine digest and assimi- late a larger amount of the carbohydrates and a less amount, taken together, of the other constituents, than either sheep or calves do. The amount of fer- tilizing elements recovered is dependent on so many conditions, as the power to assimilate food, the age and species, and the kind and quantity of surplus products produced by the animal, that only a general average can be reached, which must be amended as experiments throw more light on the subject.
What to read after The Fertility of the Land: a Summary Sketch of the Relationship of Farm-Practice to the Maintaining And Increasing of the Productivity of the Soil?
You can find similar books in the "Read Also" column, or choose other free books by Isaac Phillips Roberts to read onlineMoreLess
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