Effects of sample pre-treatments on the analysis of liquid organic manures by visible and near-infrared spectrometry.

ABSTRACT: Proper application of a fertilizer requires precise knowledge of its nutrient composition. In the case of liquid organic manures (LOM), this information is often lacking due to heterogeneous nature of these fertilizers. Published "book values" of nutrient contents present the average from a wide range of possible nutrient characteristics, but usually differ considerably from the concentration in a particular manure. Thus, chemical analyses are recommended before applying the specific LOM. Unfortunately, this is usually too costly and time-intensive in practical farming. On-farm analysis by optical spectrometry in the visible and near-infrared (Vis-NIR) range is considered as an efficient alternative. However, calibration of Vis-NIR spectrometry for LOM is challenging as shown in many studi

SUBMITTER: Horf M 

PROVIDER: S-EPMC10920715 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature