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" ... no manure from that of the nitrate of soda plot. To find its effect with superphosphate, the yield of the phosphoric acid plot is subtracted from that which had the mixture of the two. The increase with the complete fertilizer over that with the superphosphate... "
Annual Report of the Ohio State Board of Agriculture - Σελίδα 471
των Ohio State Board of Agriculture - 1881
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Report of Work of the Agricultural Experiment Station, Middletown, Conn ...

Wilbur Olin Atwater - 1879 - 198 σελίδες
...the complete fertilizer over that with the superphosphate and' potash salt, gives the effect of the nitrate of soda again, and so on. Of course it is...irregularities in the different plots often a good deal more. From this table we may note that: 1 . The effects of the different materials on the poorer soils were...

Annual Report of the Commissioner and the Board of Agriculture and Immigration

Virginia. Dept. of Agriculture and Immigration - 1881 - 282 σελίδες
...with the complete fertilizer over that with the superphosphate and potash salt gives the effect of the nitrate of soda again, and so on. Of course it is...good deal more. Indeed, one of the most interesting uses of this table is to show the uniformity, or lack of uniformity, of the action of the materials...

Results of Field Experiments with Various Fertilizers

Wilbur Olin Atwater - 1883 - 204 σελίδες
...the complete fertilizer over that with the superphosphate and potash salt, gives the effect of the nitrate of soda again, and so on. Of course it is...irregularities in the different plots often a good deal more. • FIELD EXPERIMENTS WITH VARIOUS FERTILIZERS. 67 It would be wrong to assume, in the case of superphosphate...




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