Nitrogen budgets for three cropping systems fertilised with cattle manure

Salazar, F. J., Chadwick, D., Pain, B. F., Hatch, D. and Owen, E. (2005) Nitrogen budgets for three cropping systems fertilised with cattle manure. Bioresource Technology, 96 (2). pp. 235-245. ISSN 0960-8524 doi: 10.1016/j.biotrech.2004.05.013

Abstract/Summary

A field plot experiment was set up on a sandy loam soil of SW England in order to determine the efficiency of nitrogen use from different cattle manures. The manure treatments were low and high dry matter cattle slurries and one farmyard manure applied at a target rate of 200 kg total Nha(-1) year(-1), and an untreated control. There were three different cropping systems: ryegrass/clover mixture, maize/rye and maize/bare soil, which were evaluated during 1998/99 and 1999/00. Measurements were made of N losses, N uptake and herbage DM yields. Result showed that manure type had a significant effect on N utilisation only for maize. N balances were negative in maize (approximately -247 to -10 kg N) compared to grass (approximately 5-158 kg N). Agronomic management was more important than manure type in influencing N losses, where soil cultivation appeared to be a key factor when comparing maize and grass systems. (C) 2004 Elsevier Ltd. All rights reserved.