COMPARISON OF SAMPLING METHODS FOR ANIMAL MANURE

Citation
Pjl. Derikx et al., COMPARISON OF SAMPLING METHODS FOR ANIMAL MANURE, Netherlands journal of agricultural science, 45(1), 1997, pp. 65-79
Citations number
21
Categorie Soggetti
Agriculture,"Agriculture Dairy & AnumalScience
ISSN journal
00282928
Volume
45
Issue
1
Year of publication
1997
Pages
65 - 79
Database
ISI
SICI code
0028-2928(1997)45:1<65:COSMFA>2.0.ZU;2-D
Abstract
More stringent legislation on undesirable mineral losses to the enviro nment at the farm level creates the need for the farmer to obtain accu rate information on the mineral flows at his farm, including the miner al content of manure. Both currently available and recently developed new sampling methods for slurry and solid manure were tested for bias and reproducibility in the determination of total phosphorous and nitr ogen content of the samples. Sampling methods were based on techniques in which samples were taken either during loading from the hose or fr om the transporting vehicle after loading. It was demonstrated that mo st methods were unbiased. New methods for slurry, based on sampling fr om the hose, were up to a factor two better reproducible compared to e xisting methods. Sampling of solid manure can be done accurately in a relatively simple way. For practical reasons mechanisation of sampling is desirable. To minimize the influence of human activity on the qual ity of the sample automatization is strongly advisable.