GreenSeeker™and the diagnosis of crop health.
DOI:
https://doi.org/10.15517/am.v22i2.11799Keywords:
NDVI, nitrogen-containing pigments, precision agriculture, radiation, refl ectance, remote sensors.Abstract
The
objective of this note is to provide basic information and technical
principles needed for the use of the GreenSeeker™,
in agricultural applications such as nitrogen fertilization,
irrigation scheduling, mapping of agricultural fi elds and
precision agriculture. A description of the instrument is provided,
as well as the technical and physiological principles
that support its use in agriculture. The radiative properties
of plant canopies and light refl ection from healthy and
stressed crops are described briefl y. Possible applications of
GreenSeeker in diagnosis and correction of crop disorders
in the fi eld in real time are considered, according to spatial
heterogeneity ubiquitous in tropical agro ecosystems. The
limitations of the technology currently available and its
applications to other tropical crops, besides rice and corn,
are also addressed.
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