Differences in botanical and chemical composition of forage from organic and conventional leys: A survey at farm field level

Acta Agriculturae Scandinavica Section B: Soil and Plant Science

Volumn 48, Issue 1, 1998, Pages 18-25

  Pettersson, Peter ^a   Salomonsson, Lennart ^a   Nordkvist, Erik ^b  

^a SWEDISH UNIVERSITY OF AGRICULTURAL SCIENCES   (Sweden)

^b NATIONAL VETERINARY INSTITUTE   (Sweden)

Author keywords

Forage quality; Grasses; Multivariate data analysis; Near infrared spectroscopy; Organic farming; Partial least squares regression; Principal component analysis; Trifolium

Indexed keywords

POACEAE; TRIFOLIUM;

EID: 0031708787     PISSN: 09064710     EISSN: 16511913     Source Type: Journal    
DOI: 10.1080/09064719809362474     Document Type: Article

References (33)

1. AOAC. 1990. Official Methods of Analysis, 15th ed., Arlington, VA:Association of Official Analytical Chemists.
2. Barton, F. E., II and Himmelsbach, D. S., 1991. NIRS in agriculture:its birth, growth and future. Making Light Work:Advances in Near Infrared Spectroscopy, Int. Conf. Near Infrared Spectrosc. 1991.
3. Church, D. C., 1991. Livestock Feeds and Feeding, 3rd edn., Englewood Cliffs, NJ:Prentice-Hall.
4. Ciszuk, P., and Lindberg, J. E., 1985. Total nitrogen retention in lactating goats in relation to digested nitrogen and estimated absorption of amino acids. Acta Agric. Scand. Suppl., 25:163–176.
5. Coleman, S. W., Barton, F. E., II and Meyer, R. D., 1985. The use of near-infrared reflectance spectroscopy to predict species composition of forage mixtures. Crop Sci., 25:834–837.
6. Coleman, S. W., Christiansen, S., and Shenk, J. S., 1990. Prediction of botanical composition using nirs calibrations developed from botanically pure samples. Crop Sci., 30:202–207.
7. Cowling, D. W., 1961. The effect of white clover and nitrogenous fertilizer on the production of a sward. 1. Total annual production. J. Br. Grassl. Soc., 16:281–290.
8. Frame, J., 1990. The role of red clover in United Kingdom pastures. Outlook Agric., 19:49–55.
9. García-Criado, B., García-Ciudad, A., and Pèrez-Corona, M. E., 1991. Prediction of botanical composition in grassland herbage samples by near infrared reflectance spectroscopy. J. Sci. Food Agric., 57:507–515.
10. Granstedt, A., 1990. Case studies on nitrogen supply in alternative farming, 271Uppsala:Swedish University of Agricultural Sciences, Research Committee for Alternative Agriculture. (in Swedish with English summary).
11. Hansen, H., 1981. Comparison of chemical composition and taste of biodynamically and conventionally grown vegetables. Qual. Plant. Plant Foods Hum. Nutr., 30:203–211.
12. Isaac, R. A., and Johnson, W. C., 1985. Elemental analysis of plant tissue by plasma emission spectroscopy:collaborative study. J. Assoc. Off. Anal. Chem., 68:499–505.
13. Jennische, P., and Larsson, K., 1990. Traditionella svenska analysmetoder för foder och växtmaterial, Report 60 Uppsala:SLL. (in Swedish)
14. Joliffe, J., 1986. Principal Component Analysis, Berlin:Springer.
15. KRAV. 1993. KRAV regler 1993, version 2, Kontrollföreningen för ekologisk odling 32Uppsala (in Swedish)
16. Laidlaw, A. S., 1980. The effects of nitrogen fertilizer applied in spring on swards of ryegrass sown with four cultivars of white clover. Grass Forage Sci., 35:295–299.
17. le Clercq, L., 1989. “ Problems when converting from conventional to organic agriculture ”. In Växtodling, Vol. 7, Uppsala:Dept of Crop Production Science, Swedish University of Agricultural Sciences.
18. Lindgren, E., 1979. The nutritional value of roughages determined in vitro and by laboratory methods, Report 45 Dept of Animal Nutrition, Swedish University of Agricultural Sciences.
19. Lindgren, E., 1983. Nykalibrering av VOS-metoden för bestämning av energivärde hos vallfoder, Uppsala:Dept of Animal Nutrition and Management, Swedish University of Agricultural Sciences. (in Swedish)
20. Martens, H., and Næs, T., 1989. Multivariate Calibration, 419Chichester:John Wiley & Sons.
21. Moore, K. J., Roberts, C. A., and Fritz, J. O., 1990. Indirect estimation of botanical composition of alfalfa—smooth bromegrass mixtures. Agron. J., 82:287–290.
22. Naess, H., and Sobelius, J., 1990. The definition of conversion from industrial to ecological agriculture. Proceedings of the Ecological Agriculture NJF—Seminar 166. 1990. Edited by:Granstedt, A., pp. 110–120. Research Committee for Alternative Agriculture, Swedish University of Agricultural Sciences. Miljövård, 5.
23. Nilsson, T., 1979. Yields, storage ability, quality and chemical composition of carrot, cabbage and leek at conventional and organic fertilizing. Acta Hortic. (Wageningen), 93:209–223.
24. Nordkvist, E., and Larsson, K., 1994. An approach to the use of multivariate analysis of near infrared spectroscopy (NIR) data from field-trials. Field Crops Res., 37:33–38.
25. Petersen, J. C., Barton, F. E., II, Windham, W. R., and Hoveland, C. S., 1987. Botanical composition definition of tall fescue—white clover mixtures by near infrared reflectance spectroscopy. Crop Sci., 27:1077–1080.
26. Pettersson, P., Nordkvist, E., and Salomonsson, L., 1992. “ Determination of botanical composition in forage using NIRS and multivariate calibration ”. In Near Infra-Red Spectroscopy. Bridging the Gap between Data Analysis and NIR Applications, Edited by:Hildrum, K. I., Isaksson, T., Naess, T., and Tandberg, A., 277–280. Chichester:Ellis Horwood.
27. Schudel, P., Eichenberger, M., Augstburger, F., Kläy, R., and Vogtman, H., 1979. Über den Einfluss von Kompost- und Düngung auf Ertrag, Vitamin-C und Nitratgehalt von Spinat und Schnittmangold. Schweiz. Landwirtsch. Forsch., 18:337–349.
28. Schuphan, W., 1974. Nutritional value of crops as influenced by organic and inorganic fertilizer treatments. Qual. Plant. Plant Foods Hum. Nutr., 23:333–358.
29. Shenk, J. S., and Westerhaus, M. O., 1991. Population definition, sample selection, and calibration procedures for near infrared reflectance spectroscopy. Crop Sci., 31:469–474.
30. Spörndly, R., 1991. Fodertabeller för idisslare 1991, Swedish University of Agricultural Sciences. Speciella skrifter 44 (in Swedish)
31. Tilley, J. M. A., and Terry, R. A., 1963. A two-stage technique for the in vitro digestion of forage crops. J. Br. Grassl. Soc., 18:104–111.
32. Wold, S., Albano, C., Dunn, W. J. I., 1983. “ Multivariate data analysis in chemistry ”. In Chemometrics -Mathematics and Statistics in Chemistry, Edited by:Kowalski, B. R., The Netherlands:D. Reidel.
33. Wold, S., Esbensen, K., and Geladi, P., 1987. Principal component analysis. Chemom. Intel. Lab. Syst., 2:37–52.