Agriculture Reference
In-Depth Information
Francis, CA. 1986.
Multiple Cropping Systems
. Macmillan Publishing Company, New York.
Freyer, B. 2003.
Fruchtfolgen
. Eugen Ulmer Verlag, Stuttgart.
Gallagher, R.S. and Cardina, J. 1998. The effect of light environment during tillage on the
recruitment of various summer annuals.
Weed Science
46(2): 214-216.
Gerhards, R., Juroszek, P., Klümper, H. and Kühbauch, W. 1998. Möglichkeiten zur photobiol-
ogischen Unkrautregulierung auf Ackerschlägen.
Pflanzenbauwissenschaften
2: 91-96.
Germeyer, C.U. 1999. Weitreihenverfahren und Lebendmulch - neue Anbaukonzepte für den
Ökologischen Landbau? In: Hoffmann, H. and Müller, S. (eds) Beiträge zur 5.
Wissenschaftstagung zum Ökologischen Landbau - Vom Rand zur Mitte. Verlag Dr
Köster, Berlin. pp. 82-85.
Gosling, P. and Shepherd, M. 2005. Long-term changes in soil fertility in organic arable farm-
ing systems in England, with particular reference to phosphorus and potassium.
Agriculture, Ecosystems and Environment
105: 425-432.
Grevsen, K. 2000. Competitive ability of pea (
Pisum sativum
L.) cultivars against weeds. In:
Alföldi, T., Lockeretz, W. and Niggli, U. (eds)
IFOAM 2000 - The World Grows Organic
.
Proceedings of the 13th International IFOAM Scientific Conference
. vdf Hochschulverlag AG
an der ETH Zurich, Basel. pp. 179.
Haas, G. 2004.
Stickstoffversorgung von Weisskohl, Silo- und Körnermais durch
Winterzwischenfrucht-Leguminosen
. Schriftenreihe Institut für Organischen Landbau.
Verlag Dr Köster, Berlin.
Hartley, K.L.S. and Forno, I.W. 1992.
Biological Control of Weeds: A Handbook for Practitioners
and Students
. Inkata Press, Melbourne.
Hartley, M.J., Rahman, A, Harrington, K.C. and James, T.K. 2000. Assessing ground covers in
a newly planted apple orchard.
New Zealand Plant Protection
53: 22-27.
Hartmann, K.M. and Nezadal, W. 1990. Photocontrol of weeds without herbicides.
Naturwissenschaften
77: 158-163.
Hatcher, P.E. and Melander, B. 2003. Combining physical, cultural and biological methods.
prospects for integrated non-chemical weed management strategies.
Weed Research
43(5):
303-322.
Henderson, C.W.L. and Bishop, A.C. 2000. Vegetable weed management systems. In: Sindel,
B.M. (ed.)
Australian Weed Management Systems
. R.G. and F.J. Richardson, Melbourne.
pp. 355-372.
Herrmann, G. and Plakolm, G. 1991.
Ökologischer Landbau - Grundwissen für die Praxis
.
Österreichischer Agrarverlag, Wien.
Heß, J. 1993.
Residualer Stickstoff aus mehrjährigem Feldfutterbau: Optimierung seiner Nutzung
durch Fruchtfolge und Anbauverfahren unter den Bedingungen des Ökologischen Landbaus
.
Habilitationsschrift, Landwirtschaftliche Fakultät, Universität Bonn.
Holle, R. and Untiedt, H. 1999. Crop rotations on organic farms in Northern Germany and
development of wide row system. In: Olesen, J.E., Eltun, R., Gooding, M.J., Jensen, E.S.
and Köpke, U. (eds)
Designing and Testing Crop Rotations for Organic Farming - Proceedings
from an International Workshop
. Danish Research Centre for Organic Farming, Tjele, pp.
159-162.
Hooks, C.R.R., Valenzuela, H.R. and Defrank, J. 1998. Incidence of pests and arthropod natu-
ral enemies in zucchini grown with living mulches.
Agriculture, Ecosystems and
Environment
69: 217-231.
Hopster, G.K. and Visser, A.J. (eds) 2001. Ecological infrastructure management. Proceedings
of VEGINECO, FAIR 3-CT96-2056,
Integrated and Ecological Vegetable Production,
Development of Sustainable Farming Systems Focusing on High Quality Production and
Minimum Environmental Impact
. Applied Plant Research BV, Wageningen.
