By N.C. Brady (Ed.)
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Ann Larkin Hansen covers every thing you must recognize to effectively make your personal hay, from slicing, drying, and raking to baling and storing. She additionally tells you every little thing you must find out about gear techniques, together with conventional horse strength, tractor energy, and implements starting from scythes to disc mowers.
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Extra info for Advances in Agronomy, Vol. 27
DRAGAN-BULARDA, AND D. 1. Components of the enzyme activity in soil. Components of the enzyme activity of soil' can be classified as shown in Fig. 1 . Activity of most soil enzymes is assayed in samples in which the proliferation of microorganisms is prevented by the addition of toluene or the microorganisms are killed by irradiation with 7-rays or an electron beam. Enzyme activity determined under these conditions is due to the accumulated enzymes. Dehydrogenase activity in soil is assayed without preventing microbial proliferation.
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NO. 24, pp. 81-89. Frank, A. ,Power, J. , and Willis, W. 0. 1973. Agron. 1. 65, 777-783. Fry, K. E. 1970. Plant Physiol. 45, 465-469. Fry, K. E. 1972. Crop Sci. 12, 698-701. Goode, J. , and Higgs, K. H. 1. Hort. Sci. 48, 203-215. Greacen, E. , and Oh, J. S . 1972. Nature (London), N e w Biol. 235, 24-25. Hsiao, T. C. 1973. Annu. Rev. Plant Physiol. 24, 519-570. , and Aspinall, D. 1970. Ann. Bot. ]34, 393-408. Jordan, W. , and Ritchie, J. T. 1971. Plant Physiol. 48, 783-788.. Keck, R. , and Boyer, J.