Prediction of Spatial Distribution Pattern of Hordeum glaucum steud. Population Using Neural Network Model

پژوهش های حفاظت گیاهان ایران

Article 14, Volume 24, Issue 4 - Serial Number 10, December 2010   

Document Type: Research Article

DOI: 10.22067/jpp.v24i4.8142

Authors

hassan makarian^* ; Abbas Rohani

.

Abstract

Abstract
Recent interest in describing the spatial distribution patterns of weeds through using interpolation methods has increased to estimate weed seedling density from spatially refferenced data and evaluation of applicable to site-specific weed management. In this research, a multi layer perceptron neural network (MLPNN) model was developed to predict the spatial distribution of H. glaucum density, with respect to its ability to interpolate and map weed seedling densities. This method was evaluated on data of H. glaucum density in a saffron field in Southern Khorasan. Some statistical tests, such as comparisions of the means, variance, statistical distribution as well as coefficient of determination in linear regression were used between the observed point sample data and the estimated weed seedling density surfaces to evaluate the performance of the interpolation method. Results showed that in training MLPNN, test and total phase P- value was greater than 0.49, 0.18 and 0.27 percent respectively, indicating that there was no significant (p