TY  - JOUR
T1  - Delineation and Mapping of Soil Available Micronutrients Status in Virudhunagar District
of Tamil Nadu using GIS and GPS Techniques
AU - Rajesh, N. AU - Karpagam, J. AU - Subramanian, K.S. 
JO  - Research Journal of Agronomy
VL  - 12
IS  - 1
SP  - 1
EP  - 7
PY  - 2018
DA  - 2001/08/19
SN  - 1815-9354
DO  - rjagr.2018.1.7
UR  - https://makhillpublications.co/view-article.php?doi=rjagr.2018.1.7
KW  - Micronutrients
KW  -delineation
KW  -soil analysis GIS
KW  -GPS techniques
KW  -nutrient management
AB  - Micronutrients are as essential as
macronutrients but required in smaller quantities by
plants. Crop growth, quality and yield of many crops may
be affected if any of essential micronutrients such as zinc,
iron, copper, manganese, boron, molybdenum and cobalt
are lacking in the soil. Over the years with intensive
cultivation, Indian agriculture has moved from an era of
scattered single element deficiencies to more complex
multiple nutrient deficiencies. It is essential to have an
idea of depletion studies and future projections for
prediction of micronutrient requirements. Refinement of
critical level and delineation of micronutrient deficient
and toxic areas. Integrated nutrient management is used
with greater thrust on organic to improve the
micronutrient availability and to reduce micro nutrient
fertilizer level. In the context of today’s changing
scenario, there is a need to generate the spatial data of
micronutrients using Global Positioning System (GPS)
and the spatial variability maps for individual nutrient
(Zn, Fe, Cu and Mn) is prepared using GIS software.
ER  -