LITERATURE CITED 1. Allen, S.E. 1980. Sulfur-coated urea: cover controls nitrogen release. Weeds, Trees, and Turf. 19(6): 54-55. 2. Allen, S.E., C.M. Hunt, and G.L. Terman. 1971. Nitrogen release from sulfur-coated urea as affected by coating weight, placement, and temperature. Agron. J. 63:529-533. 3. Allen, S.E., and D.A. Mays. 1974. Coated and other slow-release fertilizers for forages. p. 599- 582. In D.A. Mays (ed.) Forage fertilization. Am. Soc. Agron., Madison, Wis. 4. Anonymous. 1980. SKW Trostberg product information. SKW Trostberg, West Germany. 5. Anonymous. 1980. Nitroform 38-0-0: long lasting organic nitrogen. Boots Hercules Agrochemicals Co. Product Data., Wilmington, Del. 6. Amberger, A., and K. Vi1smeier. 1979. Breakdown of dicyandiamide in quartz sand and soils. Z. Pflanzenernaehr. Bodenkd. 142:778-785. 7. Association of American Plant Food Control Officials. 1983. Official publication, no. 36. AAPFCO, Inc., West Lafayette, Ind. 8. Basaraba, J. 1964. Mineralization of urea-formaldehyde compounds at different pH levels and temperatures. Can. J. Soil Sci. 44:131-136. 9. Beard, J.B. 1973. Turfgrass: science and culture. Prentice-Hall Inc., Englewood Cliffs, N.J. 10. Beaton, J.D., W.A. Hubbard, and R.C. Speer. 1967. Coated urea, thiourea, urea-formaldehyde, hexamide, oxamide, glyco1uril, and oxidized nitrogen enriched coal as slowly available sources of nitrogen for orchardgrass. Agron. J. 59:127-133. 11. Bundy, L.G., and J.M. Bremner. 1973. Inhibition of nitrification in soils. Soil Sci. Soc. Am. Proc. 37:396-398. 12. Cantare1la, H., and M.A. Tabatabai. 1983. Amides as sources of nitrogen for plants. Soil Sci. Soc. Am. J. 47:599-603.
30
Embed
LITERATURE CITED - archive.lib.msu.eduarchive.lib.msu.edu/tic/thesdiss/landschoot1984d.pdf · LITERATURE CITED 1. Allen, S.E. 1980. ... Coated urea, thiourea, urea-formaldehyde, hexamide,
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
2. Allen, S.E., C.M. Hunt, and G.L. Terman. 1971.Nitrogen release from sulfur-coated urea asaffected by coating weight, placement, andtemperature. Agron. J. 63:529-533.
3. Allen, S.E., and D.A. Mays. 1974. Coated and otherslow-release fertilizers for forages. p. 599-582. In D.A. Mays (ed.) Forage fertilization.Am. Soc. Agron., Madison, Wis.
4. Anonymous. 1980. SKW Trostberg product information.SKW Trostberg, West Germany.
5. Anonymous. 1980. Nitroform 38-0-0: long lastingorganic nitrogen. Boots Hercules AgrochemicalsCo. Product Data., Wilmington, Del.
6. Amberger, A., and K. Vi1smeier. 1979. Breakdown ofdicyandiamide in quartz sand and soils. Z.Pflanzenernaehr. Bodenkd. 142:778-785.
7. Association of American Plant Food ControlOfficials. 1983. Official publication, no. 36.AAPFCO, Inc., West Lafayette, Ind.
8. Basaraba, J. 1964. Mineralization of urea-formaldehydecompounds at different pH levels and temperatures.Can. J. Soil Sci. 44:131-136.
10. Beaton, J.D., W.A. Hubbard, and R.C. Speer. 1967.Coated urea, thiourea, urea-formaldehyde,hexamide, oxamide, glyco1uril, and oxidizednitrogen enriched coal as slowly available sourcesof nitrogen for orchardgrass. Agron.J. 59:127-133.
11. Bundy, L.G., and J.M. Bremner. 1973. Inhibition ofnitrification in soils. Soil Sci. Soc. Am. Proc.37:396-398.
12. Cantare1la, H., and M.A. Tabatabai. 1983. Amides assources of nitrogen for plants. Soil Sci. Soc. Am.J. 47:599-603.
13. Clark, K.G., J.Y. Yee, and K.S. Love. 1948. Newsynthetic nitrogen fertilizer: preparation andproperties of urea-form. Ind. Eng. Chem.40:1178-1183.
14. Corke, C.T., and J.B. Robinson. 1966. Microbialdecomposition of various fractions ofureaformaldehyde. Nature 211(5054):1202-1203.
15. Dawson, M.D., and W. Akratanakul. 1973. SCll - theeffect of soil temperature and moisture. SulfurInst. J. 9(F-W):14.
16. Delwiche, C.C. 1970. The nitrogen cycle. Sci. Am.223:136-146.
17. DeMent, J.D., C.M. Hunt, and G. Stanford. 1963.Hydrolysis, nitrification, and nitrogenavailability of oxamide as influenced by granulesize. J. Agric. Food Chem. 9:453-456.
18. Detrick, J.H., and R.H. Doberneck. 1979. The newsolution nitrogen fertilizer. p. 104-107. In
J.R. Street (ed.) Proc. 20th Ill. TurfgrassConf.
19. Dilz, K., and J.J. Steggerda. 1962. Nitrogenavailability of oxamide and ammonium nitratelimestone. J. Agric. Food Chem. 10:338-340.
20. Engelstad, a.p., C.M. Hunt, and G.L. Terman. 1964.Response of corn to nitrogen in oxamide andammonium nitrate in greenhouse experiments.Agron. J. 56:579-582.
21. Frankenberger, W.T., and M.A. Tabatabai. 1982.Transformations of amide nitrogen in soils. SoilSci. Soc. Am. J. 46:280-284.
22. Fuller, W.H., and K.G. Clark. 1947. Microbiologicalstudies on urea-formaldehyde preparations. SoilSci. Soc. Am. Proc. 12:198-202.
87
23. Funk, R. 1979. Characteristics of soluble nitrogenfertilizers. p. 72-75. In J.R. Street (ed.) Proc.20th Ill. Turfgrass Conf.
24. Hamamota, A.D. 1966. Isobutylidene diurea as a slowacting nitrogen and the studies in this field inJapan. Proc. No. 90. The Fertiliser Society. 44Russell Square, London, W.C.I. 77p.
88
25. Hauck. R.D •• and M. Koshino. 1971. Slow-release andamended fertilizers. p. 445-515. In R.A. Olson.T.J. Army. J.J. Hanway. and V.J. Kilmer (ed.)Fertilizer technology and use. Soil Sci. Soc. Am ••Madison. Wis.
26. Hays. J.T •• and W.W. Haden. 1966. Soluble fractions ofureaforms - nitrification. leaching and burningproperties. J. Agric. Food Chem. 14:339-341.
27. Hornick. S.B .• L.T. Sikora. S.B. Sterrett. and J.J.Murray. 1984. Utilization of sewage sludge as asoil conditioner and fertilizer for plant growth.Agricultural Environmental Quality InstitutePublication. USDA. Beltsville. Md.
28. Hughes. T.D. 1976. Nitrogen release from isobutylidenediureaj soil pH and fertilizer particle sizeeffects. Agron. J. 68:103-106.
29. Hummel. N.W. Jr •• 1980. Evaluation of slow-releasenitrogen sources for turfgrass fertilization. M.S.Thesis. The Pennsylvania State University.University Park. Pa.
30. Hummel. N.W. Jr •• 1982. Evaluation of sulfur-coatedurea for fertilization of turfgrasses. PhD. Thesis.The Pennsylvania State University. University Park.Pa.
31. Hummel. N.W. Jr .• and D.V. Waddington. 1981.Evaluation of slow-release nitrogen sources onBaron Kentucky bluegrass. Soil Sci. Soc. Am. J.45:966-970.
32. Hummel. N.W. Jr •• and D.V. Waddington. 1984. Sulfur-coated urea for turfgrass fertilization. Soil Sci.Soc. Am. J. 48:191-195.
33. Katy. S.E .• and C.A. Fassbender. 1966.Biodegradibility of urea-formaldehydes and relatedcompounds. J. Agric. Food Chem. 14:336-338.
34. Kaempffe. G.K •• and O.R. Lunt. 1967. Availability ofvarious fractions of urea-formaldehyde. J. Agric.Food Chem. 14:336-338.
35. Lunt. O.R .• and S.B. Clark. 1969. Properties and valueof 1.1 diureido isobutane (IBDU) as a long-lastingnitrogen fertilizer. J. Agric. Food Chem.17:1269-1271.
89
36. Madison, J.H. 1971. Principles of turfgrass culture.Van Nostrand Reinhold Co. New York, N.Y.
37. McClellan, G.H., and R.M. Scheib. 1973.Characterization of sulfur coatings on urea.Sulfur Inst. J. 9(3-4):8-12.
38. McVey, G.R. 1979. Methylene urea - a controlledrelease nitrogen source for turfgrass and woodyornamentals. p. 83-95. In J.R. Street (ed.) Proc.20th Ill. Turfgrass Conf.
39. McVey, G.R. 1980. Methylene urea: differences in ureaformaldehydes noted. Weeds, Trees, and Turf. 19(6): 46-47.
41. Nommik, H. 1958. On decomposition of calciumcyanamide and dicyandiamide in the soil. ActaAgr. Scand. 8:404-440.
42. Nommik, H. 1959. Calcium cyanamide and dicyandiamideas sources of nitrogen for higher plants. ActaAgr. Scand. 9:435-437.
43. Pesek, J., G. Stanford, and N.L. Case. 1971. Nitrogenproduction and use. p. 217-269. In R.A. Olson,T.J. Army, J.J. Hanway, and V.J. Kilmer (ed.)Fertilizer technology and use. Soil Sci. Soc. Am.,Madison, Wis.
44. Prasad, M. 1976. The release of nitrogen fromsulfur-coated urea as affected by soil moisture,coating weight, and method of placement. SoilSci. Soc. Am. J. 40:134-136.
45. Prasad, R., G.B. Raja1e, and B.A. Lakhdive. 1971.Nitrification retarders and slow-release nitrogenfertilizers. Advan. Agron. 23:337-383.
47. Reddy, G.R. 1964. Effect of mixing varyingquantities of dicyandiamide with ammoniumfertilizers on nitrification of ammonia in soils.Can. J. Soil Sci. 44:254-259.
48. Reddy, G.R. 1964. Effect of varying quantities ofdicyandiamide on the utilization of nitrogen byseveral crops from sodium nitrate and ammoniumsulphate. J. Agric. Sci. 62:35-38.
49. Reddy, G.R., and N.P. Datta. 1965. Use ofdicyandiamide in nitrogen fertilizers. J.Indian Soc. Soil Sci. 13:135-139.
50. Riemenschneider, W. 1976. Cyanogen or oxamide fromHCN in one step. Chem. Tech. 6:658-661.
51. Rindt, D.W., G.M. Blouin, and J.G. Getsinger. 1968.Sulfur coatings on nitrogen fertilizer toreduce dissolution rate. J. Agric. Food Chem.16:773-778.
52. Schmidt, R.E. 1975. Response of bentgrass toselected N, Fe sources. Golf Superintendent.43:(5)24-26.
53. Shirley, A.R. Jr., and R.S. Meline. 1975. Sulfur-coated urea from a 1-ton-per-hour pilot plant.p. 33-54. In J.R. West (ed.) New Uses of Sulfur.Advan. in Chem. Series no. 40, Am. Chem. Soc.,Washington, D.C.
58. Tester, C.F., L.J. Sikora, J.M. Taylor, and J.F.Parr. 1979. Decomposition of sewage sludgecompost in soil: III. Carbon, nitrogen, andphosphorus transformations in different sizedfractions. J. Environ. Qual. 8:79-82.
59. Tisdale, S.L., and W.L. Nelson. 1975. Soilfertility and fertilizers. 3rd ed.Macmillan Publishing Co., Inc. New York, N.Y.
61. Van Gordon, T.D., and S.G. Gilbert. 1976.Bloconversion of Barex 210 (an acrylonitrilecopolymer) nitrogen for plant utilization.J. Agrlc. Food Chem. 24:823-824.
62. Vilsmeier, K. 1980. Effect of temperature on thebreakdown of dicyandiamide in the soil.Z. Pflanzenernaehr. Bodendk. 143:113-118.
63. Volk, G.M., and G.C. Horn. 1975. Response curvesof various turfgrasses to application ofseveral controlled-release nitrogen sources.Agron. J. 67:201-204.
64. Waddington, D.V. 1976. Nitrogen sources for thelawn care industry. p. 50-53. In D.P. Hartin (ed.)Ohio Turfgrass Conf. Proc.
65. Waddington, n.v., and J.H. Dutch. ]976.Evaluation of slow release nitrogen fertilizerson Pennpar creeping bentgrass. Agron. J.68:812-815.
66. Waddington, n.v., J.M. Duich, and T.R. Turner.1977. Turfgrass fertilization withisobutylidene diurea and ureaform. p. 319-334.In R.L. Goulding (ed.) Proc. 1977 ControlledRelease Pesticide Symposium.
74. Worthy. W. 1980. TVA shows off new fertilizertechnology. Chem. Eng. News. 58(43):32-33.
75. Yee, J.Y .• and K.S. Love. 1946. Nitrification ofurea formaldehyde reaction products. Soil Sci.Soc. Am. Proc. 11:389-392.
92
APPENDIX: COLOR, YIELD, N CONTENT, AND N RECOVERY DATA
Table 8. Effect of nitrogen source on color ratings of MerionKentucky bluegrass.
94
Treat-ment
No. Nitrogen Source 7/7/82
Color RatingsDate7/14 7/20
1. FLUF 4.5 abc 4.2 bed 4.8 ab2. FLUF PLUS 4.7 ab 4.7 ab 4.8 ab3. nJF 3.8 cd 3.8 de 4.2 cde4. FAN 4.3 abc 4.8 a 4.8 ab5. Formolene 4.8 a 4.7 ab 5.0 a6. Urea 4.7 ab 4.8 a 5.0 a7. Ammonium Nitrate 4.2 abc 4.8 a 4.8 ab8. Methylene Urea 3.8 cd 3.8 de 3.8 ef9. Ureaform Powder «0.25 mm) 2.3 fg 2.8 fg 3.2 g
10. IBDU (0.7-2.5 mm) 1.7 gh 1.8 ij 1.8 i11. Oxamide (1-3 mm) 1.7 gh 1.7 j 1.8i12. Oxamide «0.25 mm) 2.7 ef 2.8 fg 2.7 h13. 2/3 Oxamide « O.25) » 1/3 Urea 4.3 abc 3.8 de 4.3 cd14. 1/3 Oxamide « 0.25) ; 2/3 Urea 4.7 ab 4.7 ab 5.0 a15. CIL seu 3.2 de 3.8 de 4.3 cd16. AIM SCU 2.3 fg 3.7 de 4.3 cd17. TVA SCU-25 (c) 1.8 gh 3.3 ef 4.2 cde18. TVA SCU-lS (f) 1.5h 2.3 ghi 4.0 def19. TVASCU-6 (f) I.Sh 2.5 gh 3.7 f20. 30-2-9 3.8 cd 4.5 abc 4.5 bc21. 18-5-9 4.2 abc 4.0 cd 4.5 bc22. 1/2 ClL SCU; 1/2 Urea 4.0 be 4.7 ab 5.0 a23. Milorgani te 1.5h 2.0 hij 2.8 gh24. Sludge Compost 2.0 fgh 1.7 j 1.7 i25. 1/5 Sludge Compost; 4/5 Urea 4.2 abc 4.2 bed 4.5 be
Table 8 • (Continued).95
Color RatingsDate
Treat-mentNo. 7/26 8/1 8/8 8/19 8/26 9/1
l. 4.3 abe 3.3 abe 3.2 ede 2.7 fgh 2.8 ef2. 4.5 abe 3.7 ab 4.0 ab 3.3 ede 3.3 bed3. 3.5 efg 2.7 ede 2.7 ef 2.2 h 2.2 g4. 4.7 ab 4.0 a 3.8 ab 3.2 e-f 3.2 ede5. 4.8 a 4.0 a 3.8 ab 3.3 ede 3.5 be6. 4.7 ab 3.8 ab 4.2 a 3.7 abe 3.5 be7. 4.7 ab 3.8 ab 3.7 abe 3.7 abe 3.2 ede8. 4.0 ede 3.2 bed 3.0 de 2.5 gh 2.8 ef9. 2.5 h 2.2 ef 2.2 f 2.2 h 2.2 g
10. 1.7 i 2.2 ef 2.2 f 2.8 efg 3.0 def11. 1.8 i 2.5 de 2.7 ef 2.7 fgh 3.0 def12. 3.3 fg 3.3 abe 3.5 bed 3.2 e-f 3.2 ede13. 4.3 abe 3.3 abe 3.5 bed 3.0 d-g 3.2 ede14. 4.8 a 3.5 ab 3.7 abe 3.5 bed 3.3 bed15. 4.5 abe 4.0 a 4.2 a 4.2 a 3.7 ab16. 4.5 abe 3.8 ab 4.0 ab 4.0 ab 4.0 a17. 4.0 ede 3.3 abe 3.7 abe 3.2 e-f 3.0 def18. 4.2 bed 3.5 ab 3.8 ab 3.7 abe 3.7 ab19. 3.7 def 3.3 abe 3.7 abe 3.5 bed 3.3 bed20. 4.5 abe 3.7 ab 3.7 abe 3.5 bed 3.3 bed2l. 4.5 abe 3.2 bed 3.2 ede 2.8 efg 2.7 f22. 4.8 a 3.8 ab 4.2 a 4.0 ab 3.7 ab23. 3.0 gh 3.2 bed 3.2 ede 2.7 fgh 2.7 f24. 1.5 i 1.5 f 1.5 g 1.5 1 1.3h25. 4.3 abe 3.5 ab 3.2 cde 2.7 fgh 2.7 f
Table 8 • (Continued).96
Color RatingsDate
Treat-ment
No. 9/8 9/16 9/23 9/30 10/7 10/14
1. 2.7 def 4.3 be 4.3 a-d 3.8 cd 3.3 e-f 3.5 d-g2. 2.8 ede 4.5 abe 4.7 abe 3.8 cd 4.0 a-d 3.7 e-g3. 2.2 f 3.2 ef 3.7 def 2.7 efg 2.7 efg 2.7 hi4. 2.8 ede 4.5 abe 4.8 ab 4.7 ab 4.3 ab 4.2 a-d5. 3.2 bed 5.0 a 4.8 ab 4.7 ab 4.7 a 4.3 abe6. 3.0 b-e 4.7 ab 4.7 abe 4.3 abe 4.2 abe 4.2 a-d7. 3.0 b-e 4.5 abe 5.0 a 4.8 a 4.7 a 4.3 abe8. 2.5 ef 3.7 de 4.0 ede 3.3 de 3.2 def 3.3 e-h9. 2.2 f 2.7 fg 3.0 fg 2.0 g 2.2 gh 2.2 ij
10. 3.0 b-e 2.8 fg 3.2 fg 3.0 ef 3.2 def 3.2 fgh11. 2.8 ede 2.3 gh 2.8 g 3.0 ef 3.3 e-f 3.2 fgh12. 3.0 b-e 3.0 f 3.7 def 4.2 abe 4.2 abe 3.8 b-f13. 3.0 b-e 4.2 bed 4.2 b-e 4.0 bed 3.8 a-d 4.0 a-e14. 3.0 b-e 4.7 ab 4.8 ab 4.3 abe 4.5 a 4.2 a-d15. 3.5 ab 4.3 be 4.5 abe 4.2 abe 4.2 abe 4.5 ab16. 4.0 a 3.7 de 4.3 a-d 4.2 abe 4.2 abe 4.5 ab17. 3.0 b-e 2.8 fg 3.5 efg 3.3 de 3.3 e-f 3.5 d-g18. 3.5 ab 2.8 fg 3.2 fg 2.5 fg 2.8 efg 3.0 gh19. 3.3 be 3.0 f 3.5 efg 2.7 efg 3.5 b-e 3.7 e-g20. 3.0 b-e 4.5 abe 4.5 abe 4.5 abe 4.3 ab 4.2 a-d21. 2.2 f 4.0 cd 4.0 ede 4.2 abe 4.3 ab 3.8 b-f22. 3.3 be 4.7 ab 4.8 ab 4.7 ab 4.7 a 4.7 a23. 2.2 f 2.0 h 2.8 g 2.3 fg 2.5 fg 3.0 gh24. 1.0 g 1.2 i 1.0h LOh 1.5h 1.7 j
1. 2.5 cd 1.8 cde 2.2 cde 4.2 a 4.0 c-f 3.3 gh2. 2.2 cd 2.2 bed 1.8 de3. 2.3 cd 2.2 bed 2.2 ede4. 2.0 cd 1.8 cde 1.5e 4.0 ab 3.8 d-g 3.5 fg5. 2.3 cd 1.8 cde 2.0 de 4.3 a 4.3 a-d 4.0 def6. 2.5 cd 2.0 b-e 2.0 de 4.5 a 4.8 a 5.0 a7. 2.7 bed 1.7 de 1.8 de 3.8 abe 4.8 a 4.8 ab8. 2.7 bed 2.2 bed 2.0 de 3.7 abe 3.3 gh 3.5 fg
9. 2.7 bed 2.3 bed 2.7 a-e 3.2 bed 3.0 hi 3.2 ghi10. 3.8 a 3.3 a 3.7 ab 3.0 cde 2.5 i 2.7 i
11. 3.7 ab 3.3 a 3.5 abe 2.7 def 2.5 i 2.8 hi12. 2.3 ed 2.0 b-e 2.3 b-e 3.2 bed 3.7 efg 4.2 ede13. 2.5 cd 1.7 de 2.2 ede 4.2 a 4.2 b-e 4.0 def14. 2.5 ed 2.0. b-e 1.8 de 4.3 a 4.8 a 4.7 ahe15. 3.0 abe 2.7 ahe 2.7 a-e 4.0 ah 4.2 b-e 4.3 bed16. 3.8 a 2.8 ah 3.0 a-d 4.0 ab 4.3 a-d 4.3 bed17. 3.3 ab 2.5 a-d 3.0 a-d 3.0 ede 3.3 gh 3.7 efg18. 2.7 bed 2.5 a-d 2.5 b-e 2.2 efg 3.0 hi 3.7 efg19. 3.8 a 3.3 a 4.0 a 3.2 bed 3.3 gh 3.7 efg20. 2.7 bed 2.2 bed 2.3 b-e 4.0 ab 3.5 fgh 3.2 ghi21. 2.5 cd 2.0 b-e 1.8 de 3.8 abe 4.0 e-f 4.0 def22. 2.7 bed 2.3 bed 2.3 b-e 4.3 a 4.5 abe 4.5 a-d
1. 3.5 ef 3.5 def 3.3 de 3.3 fgh 2.8 efg 2.8 f-i2.3.4. 3.5 ef 3.3 def 3.2 e 3.0 hi 2.7 fg 2.3 ij5. 3.8 de 3.5 def 3.7 ede 3.5 efg 3.0 ef 2.8 f-i6. 4.7 a 4.5 a 4.5 a 4.2 abe 3.5 ed 3.5 b-e7. 4.3 abe 4.5 a 4.7 a 4.2 abe 3.7 be 3.7 bed8. 3.5 ef 3.3 def 3.2 e 3.0 hi 2.7 fg 2.7 ghi9. 3.0 gh 3.2 ef 3.3 de 3.5 efg 3.0 ef 2.8 f-i
10. 2.8 h 2.5 g 2.5 f 2.8 i 2.8 efg 3.0 e-h11. 3.0 gh 3.0 fg 3.3 de 3.2 ghi 2.8 efg 2.8 f-i12. 4.5 ab 4.2 abe 4.3 ab 4.0 bed 3.7 be 3.8 abe13. 3.8 de 3.7 ede 3.8 bed 3.3 fgh 3.2 de 3.2 d-g14. 4.7 a 4.7 a 4.5 a 4.3 ab 3.8 abe 3.8 abe15. 4.3 abe 4.2 abe 4.3 ab 4.0 bed 4.0 ab 4.0 ab16. 4.2 bed 4.2 abe 4.5 a 4.2 abe 3.5 ed 3.7 bed17. 4.0 ed 4.2 abe 4.5 a 4.2 abe 3.7 be 4.0 ab18. 3.8 de 4.3 ab 4.5 a 4.5 a 4.0 ab 4.3 a19. 3.8 de 4.2 abe 4.5 a 4.5 a 4.2 a 4.3 a20. 3.3 fg 3.0 fg 3.5 de 3.2 ghi 2.7 fg 2.7 ghi21. 4.2 bed 3.8 bed 4.2 abe 3.7 def 2.8 efg 3.2 d-g22. 4.5 ab 4.3 ab 4.5 a 4.0 bed 3.8 abe 3.8 abe23. 3.0 gh 3.0 gh 3.2 e 3.0 hi 2.5 g 2.5 hi
24. 1.7 i 1.3h 1.5 g 1.5 j 1.7h 1.8 j
25. 4.2 bed 4.2 abe 4.2 abe 3.8 ede 3.0 ef 3.3 e-f
Table 8 • (Continued).100
Treat-ment
No. 8/19 8/25
Color RatingsDates
9/1 9/8 9/15 9/22
1. 2.2 ef 2.3 ede 2.0 gf 1.8 fg 1.7 def 1.2 ijk2.3.4. 2.0 fg 1.7 gh 1.8g 1.5 gh 1.3 fg 1.0 jkl5. 2.3 def 2.3 ede 2.0 fg 2.0 ef 1.5 ef 1.5 ghi6. 2.8 bed 2.5 cd 2.2 efg 2.2 def 1.8 e-f 1.7 fgh7. 3.0 be 2.5 cd 2.5 ede 2.3 ede 2.3 abe 1.8 efg8. 2.3 def 2.2 def 2.3 def 1.8 fg 1.8 e-f 1.3 hij9. 2.8 bed 2.3 ede 2.5 ede 2.5 cd 2.2 a-d 1.7 fgh
10. 2.7 ede 2.5 cd 2.7 bed 3.0 ab 2.7 a 3.0 a11. 2.8 bed 2.3 ede 2.5 ede 2.5 cd 2.3 abe 2.3 cd12. 2.8 bed 2.7 be 3.0 ab 2.5 cd 2.0 b-e 1.8 efg13. 2.5 e-f 2.2 def 2.3 def 2.2 def 2.0 b-e 1.5 ghi14. 2.8 bed 2.7 be 2.7 bed 2.3 ede 2.2 a-d 2.2 ede15. 3.3 ab 2.7 be 2.8 abe 2.3 ede 2.0 b-e 2.2 ede16. 2.8 bed 2.3 ede 2.3 def 2.3 ede 2.2 a-d 2.0 def17. 3.3 ab 2.7 be 2.8 sbe 3.0 ab 2.5 ab 2.5 be18. 3.7 a 3.0 ab 3.2 s 2.7 be 2.7 a 2.3 cd19. 3.8 a 3.2 a 3.2 s 3.2 a 2.7 a 2.8 ab20. 2.3 def 1.8 fgh 2.0 fg 2.0 ef 1.8 e-f 1.7 fgh21. 2.5 e-f 1.8 fgh 2.0 fg 1.8 fg 1.7 def 1.8 efg22. 3.0 be 2.5 cd 2.5 cde 2.0 ef 2.0 b-e 2.2 ede23. 2.3 def 2.0 efg 2.2 efg 2.2 def 1.8 c-f 1.5 ghi24. 1.5 gh 1.5 hi 1.3h 1.2h 0.8 g 0.8 k125. 2.7 cde 2.2 def 2.2 efg 2.3 ede 1.7 def 2.0 def
Table 8 • (Continued).101
Treat-ment
No. 9/29 10/6
Color RatingsDate
10/13 10/20 10/27 11/3
1. 2.5 bed 3.8 def 4.0 e-f 3.5 d-g 3.2 bed 2.7 ede2.3.4. 2.2 de 4.2 b-e 4.5 abe 3.8 b-e 3.7 ab 3.2 be5. 2.5 bed 4.0 ede 4.5 abe 4.3 ab 3.a a 3.5 ab6. 3.0 a 4.7 ab 4.a ab 4.3 ab 3.7 ab 3.5 ab7. 2.8 ab 4.8 a 5.0 a 4.5 a 3.8 a 3.8 aa. 2.3 ede 3.2 gh 3.5 f 2.7 ijk 2.7 def 2.5 de9. 2.0 e 2.2 j 2.3 g 2.2 k 2.0 gh 1.a fg
10. 2.7 abe 2.5 ij 2.7 g 2.7 ijk 2.7 def 2.7 ede11. 2.0 e 2.0 j 1.5h 1.5 1 1.5 hi 1.a fg12. 2.0 e 2.3 j 3.7 ef 3.7 e-f 3.a a 3.5 ab13. 2.3 ede 3.0 hi 3.a def 3.0 f-1 2.7 def 2.8 ede14. 2.8 ab 4.2 b-e 4.3 bed 3.a b-e 3.3 abe 3.0 bed15. 2.5 bed 4.2 b-e 4.2 ede 3.a b-e 3.3 abe 2.8 ede16. 2.3 ede 3.3 fgh 3.8 def 3.3 e-f 3.0 ede 2.7 ede17. 2.3 ede 3.3 fgh 3.7 ef 2.a hij 3.0 ede 2.7 ede18. 2.0 e 2.3 j 2.8 g 2.7 ijk 2.8 e-f 3.0 bed19. 2.2 de 2.5 ij 2.7 g 2.5 jk 2.5 efg 2.3 ef20. 2.3 ede 3.3 fgh 3.7 ef 3.2 f-i 3.2 bed 2.5 de21. 2.3 ede 3.7 efg 3.8 def 3.3 e-h 2.7 def 2.7 ede22. 2.8 ab 4.5 abe 4.5 abe 4.2 abe 3.0 ede 3.0 bed23. 1.S f 2.0 j 2.5 g 2.7 ijk 2.3 fg 2.7 ede24. 1.0 g 1.3k 1.2 hi 1.2 1 1.2 ij 1.3g25. 2.8 ab 4.3 a-d 4.2 ede 4.0 a-d 3.3 abe 3.0 bed
Table 9 • Effect of nitrogen source on fresh-weight yields of MerionKentucky bluegrass.
102
Treat- Fresh-weight Yieldment Clipping Date
No. Nitrogen Source 7/8/82 7/15 7/22
2g/2m
l. FLUF 52 b-g 100 b-e 58 d-g2. FLUF PLUS 90 a 158 a 104 a3. TUF 48 c-g 83 e-h 51 e-h4. FAN 55 a-g 135 ab 93 abc5. Formo1ene 66 a-e 128 abc 75 b-f6. Urea 84 abc 127 a-d 101 ab7. Ammonium Nitrate 88 ab 153 a 104 a8. Methylene Urea 46 d-g 91 d-g 45 ghi9. Ureaform Powder «0.25 tmn) 46 d-g 55 g-j 27 hi