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Effect of Compost versus Animal Manure Fertilization on Crop Development, Yield and Nitrogen Residue in the Organic Cultivation of Potatoes

Willekens, Koen; De Vliegher, Alex; Vandecasteele, Bart and Carlier, Lucien (2008) Effect of Compost versus Animal Manure Fertilization on Crop Development, Yield and Nitrogen Residue in the Organic Cultivation of Potatoes. 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

Organic farmers in Flanders use manure from extensive conventional livestock systems due to a lack of animal manure from organic producers. The research question was if on-farm prepared compost mainly consisting of vegetal residues can be a good alternative. A long-term fertilization trial with a 4-year crop rotation of maize - potatoes - spring barley - red clover is carried out on two fields with a time difference of one year. The fertilization treatments are on-farm prepared compost, applied as a single dose and a double dose, farmyard manure, slurry and slurry combined with composted municipal waste. This paper concerns the experimental results of the potato crop in 2006 and 2007. The nitrate content of the plant juice was monitored and the potato yield and nitrate content in the soil profile at the end of the growing season were determined. In 2006 the potato yields were significantly higher for both farm compost treatments while the nitrate residues in soil were significantly lower. The early, high and constant leaf blight disease pressure in 2007 resulted in lower yields and less marked treatment effects. This investigation demonstrated that application of mature compost can result in a faster development of the potato crop in the first weeks of the growing season, which is important for sufficient yields in organic potato growing.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Key words: fertilization trial, compost, potato yield, nitrate residue, organic
Subjects: Crop husbandry > Crop health, quality, protection
Soil > Soil quality
Crop husbandry > Soil tillage
Research affiliation: International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.1 Soil fertility
Deposited By: Willekens, Ir. Koen
ID Code:12573
Deposited On:06 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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