Activity 2: Development and provision of tools and methods for the characterization and dynamic monitoring of resources

In order to strengthen its capability for agricultural research and to assess yields better, to specify the composition of biomass and to define soil fertility, BIOVA focuses on the development and provision of tools, methods for the characterization and dynamic monitoring of resources.

The understanding of biomass and nutrient flow dynamics with the aim of improving the management of resources requires the acquisition of reference points. This involves the development of tools and methodologies adapted for this purpose, and their implementation within the different areas targeted by the project. The analysis of the chemical composition of resources is generally performed using conventional methods (chemical analysis in the laboratory), which are costly in time, money and materials and do not allow the assessment, in a sufficiently short time interval, of the composition of resources, or even monitoring their evolution. A more precise monitoring of the use of resources necessarily requires the development of new tools and management methods.

The general objective of Activity 2 is to develop and validate portable tools and methods accessible (at a reduced cost), quick and easy to implement in order to evaluate yields, biomass composition and soil fertility.

The acquisition of two types of tools is planned:

(i) near and medium infrared portable spectrometers to evaluate plant composition (food and forage), organic fertilizers and soils, and to quantify nutrient flows (N, C) between the different compartments (animal-plant-soil) on a farm. This activity plans to purchase a portable near infrared spectrometer (NIRS), which will be used in different field studies for the characterization of biomass, as well as other equipment (ovens and mills, etc.) placed in each partner’s laboratory for the preparation of samples for analysis (drying, particle calibration). The medium infrared spectrometer (MIRS) will be made available for the project by LRI;

(ii) mapping tools (Geographic Information System) based on the analysis of satellite images and vegetation index for the dynamic monitoring of biomass yields at the territory level. Satellite images covering specific areas of the territory will be acquired for the calculation of the Normalized Difference Vegetation Index (NDVI).

These two types of tools are currently being studied by CIRAD in Reunion Island and IRD in Madagascar. This study aims to extend their application to different agricultural environments found in Madagascar and Mozambique.

The activity envisages the establishment of calibration equations: (i) between the biochemical parameters of biomass or the physico-chemical parameters of soil and the near or mid-infrared spectra, and (ii) between the yield or quality of biomass of plots and the vegetation index assessed by satellite image (at an intermediate level, that of the territory).

This activity also intends to purchase a near infrared spectroscopy calibration equation for estimating the composition of cereals and concentrated feed for livestock.


BIOVA Project

« Recyclage des BIOmasses Végétales et Animales dans les systèmes d’agriculture élevage »
Andranomanelatra Antsirabe 110, Madagascar
Tel : + 261 20 44 99 139 (fixed) – + 261 33 01 83 154 (mobile)

BIOVA project contact person: Vololoniaina Lalatia RAMALANJAONA
E-mail address of contact person:
E-mail address of FIFAMANOR: