The influence of a3-year rotation and fertilizer treatments on the organic carbon of soils
The effects of a 3-year rotation and fertilizer treatments on the organic carbon of soils have been presented. The rotations consisted of potatoes, oats and clover. Basic fertilizer treatment was a one-ton per acre application of 4-8-7. Ohter treatments included variations in amounts of nitrogen, phosphorus, potassium and lime applied.
Organic carbon losses must be expected when potatoes are raised in a 3-year rotation with oats and clover with the removal of all crops.
Of the various fertilizer and lime treatments analyzed additions of lime and formulas high in phosphoric acid gave best results in reducing organic carbon losses.
The 4-8-7 plus lime treatment was not so effective as the 4-16-7 treatment in producing high yields but it was more effective in maintaining the organic carbon level.
KeywordsOrganic Carbon Lime Fertilizer Treatment Lime Treatment Potato Jour
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- (1).Blair, A. W. 1933. Soil organic matter requirements in general farming. Jour. Amer. Soc. of Agron. 25: 540–548.Google Scholar
- (3).Bushnell, J. 1935. Non-legumes as green manures for potatoes. Proc. Amer. Soc. Hort. Sci. 33: 566–568.Google Scholar
- (4).Chucka, Joseph A. and Lovejoy, Delmar B. 1934. Fertilizer experiments with potatoes. Maine Agr. Exp. Sta. Report, Bul. 377: 334–336.Google Scholar
- (5).Metzger, W. H. 1939. Nitrogen and organic carbon of soils as influenced by cropping systems and soil treatments. Kansas Agr. Exp. Sta. Tech. Bul. 45.Google Scholar
- (6).Odland, T. O. 1936. Crop rotations for potatoes. Ann. Rep. Veg. Growers’ Assoc. Amer. 27: 52–61.Google Scholar
- (7).Salter, Robert M. and Green, T. C. 1933. Factors affecting the accumulation and loss of nitrogen and organic carbon in cropped soils. Jour. Amer. Soc. Agron. 25: 622–630.Google Scholar
- (9).Stauffer, R. S. 1936. Influence of soil management on some physical properties of the soil. Jour. Amer. Soc. Agron. 28: 900–906.Google Scholar
- (10).Thorne, Charles E. 1926. The function of organic matter in the soil. Jour. Amer. Soc. Agron. 18: 767–793.Google Scholar
- (11).Turk, L. M. and Millar, C. E. 1936. The effect of different plant materials, lime and fertilizers on the accumulation of soil organic matter. Jour. Amer. Soc. Agron. 28: 310–324.Google Scholar