S164 :
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2013
Authors:
Abstarct: The development of precision agriculture is baxsed on soil properties and special management
practices. Therefore, knowing the spatial dependency of soil properties and critical level of
nutrients in fields is important in order to achieving higher production and better
management. In this study, 82 samples of surface soil collected was from Urmia plain and
determined some parameters such as, soil pH, organic carbon, calcium carbonate, electrical
conductivity, available phosphorus, potassium, iron, zinc and manganese. All results were
statistically evaluated in order to assess the correlation between variables, Pearson correlation
was used to. The statistical software package SPSS through normal distribution of data was
tested. Using the interpolation method, Kriging interpolation was performed using GS +
software and the accuracy of these variables was calculated by distribution map. For more
applications, production drawings and specifications baxsed on the proposed method the
amount of land for wheat crop from West Azerbaijan Research Center for Agriculture and
Natural Resources is offering is calculated. According to the map the amounts of phosphorus
in the area were probably in sufficient level or more than sufficient level. This result was also
observed for potassium, although the amount of available iron, zinc and manganese were low
in most areas. Therefore, to increase the yield and quality of wheat crop is necessary to apply
some fertilizers containing iron, zinc and manganese. Also, in order to predict the spatial
classification of elements phosphorus, potassium, iron, zinc and manganese in this study,
neural network is LVQ4a2 used. The results showed that the artificial neural network can be
used, due to low detection error in the phase of training and testing in map zoning of soil
elements and soil properties.
Keywords:
#elements zoning #geostatistics #Kriging #Neural Networks LVQ4a2 #critical levels for wheat Link
Keeping place: Central Library of Shahrood University
Visitor:
Keeping place: Central Library of Shahrood University
Visitor: