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Effects of green-manure and organic fertiliser on organic maize (Zea Mays L.) in south Tuscany

Mazzoncini, Marco; Migliorini, Paola; Antichi, Daniele and Vazzana, Concetta (2008) Effects of green-manure and organic fertiliser on organic maize (Zea Mays L.) in south Tuscany. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

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Summary

Green-manure in Mediterranean stockless organic farms is a useful tool to improve nitrogen availability, reduce production cost and conserve soil fertility. A 2-year on farm research was carried out in Tuscany (Italy) to evaluate the effect of 3 different green manures (Hordeum v. + Avena s. mixture, Trifolium s. + Avena s. mixture, Vicia faba var. minor) and 2 levels of organic N fertilization (0 and 120 Kg N ha-1) on maize in 2004 and 2005. Green manures were ploughed into the soil in April 2004 and organic fertiliser was applied before sowing; neither green manure nor fertilizers were applied in 2005 to evaluate the residual effect of the treatments. The effect of the distribution of organic fertilizer was not efficient in comparison to green-manure. Field-bean increased maize productivity in both the years thanks to an increase in N availability as suggested by its total N uptake that exceeded the uptake of maize after control by 19.5 and 14,3 Kg N ha-1 in the first and second year. In our experimental conditions, with low organic matter and nitrogen content in the soil, the use of grasses as green-manure caused temporary immobilisation of N and maize yield reduction.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:green manure, organic fertiliser, maize, Mediterranean organic farming
Subjects: Crop husbandry > Production systems > Cereals, pulses and oilseeds
Crop husbandry > Composting and manuring
Research affiliation: Italy > Univ. Firenze
International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.2 Nutrient management
Deposited By: Migliorini, Dr Paola
ID Code:12010
Deposited On:07 Oct 2008
Last Modified:12 Apr 2010 07:36
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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