Tóth T., Pásztor L., Kertész M., Zágoni B. and Bakacsi Zs. 1998. Allocation of soil reclaiming material based on digital processing of aerial photograph. ISPRS. International Archives of Photogrammetry and Remote Sensing. Comission VII. Symposium. Resource and Environmental Monitoring. September 1-4, 1998. Budapest pp178-181


ABSTRACT

Precision farming has two requirements, such as i) correct dosage of agricultural materials realized at ii) the exact location in the plot where these are needed. Our objective was to introduce the direct use of remotely sensed images into the practice of soil reclamation as a source of information on i) the probable dosage of required amendment and ii) precise location of reclaiming materials.
The remotely sensed image was used in two phases, for the selection of optimal soil sampling plan to reclaim the plot and for the compilation of actual plan of reclamation.
The basic material of the study was a panchromatic aerial photograph on a sodic plot with patches of higher sodium-affection.
As a first step the relationship between gypsum requierement and the intensity of the aerial photograph was established. It turned out to be linear and therefore the aerial photograph was used directly for the analysis of alternative sampling plans.
As a test of the utility of sampling plans, a set of potential sampling points were used for the interpolation of the original aerial photograph and the precision of the interpolation was measured by the sum of squares of the differences between the original and the interpolated photographs.
The optimal sampling plan was selected accordingly and the field sampling, which was carried out for its test, confirmed the previous selection.