Effect of Spatial Variability in Soil Properties on Crop Productivity of Potatoes in Prince Edward Island
Authors: Farooque, Aitazaz Ahsan
Description: Potato production in Canada typically involves uniform applications of crop inputs during a growing season, ignoring spatial variations in soil/crop/yield and topographic attributes that exist within fields. Uniform application not only increases the production cost but also adversely affects the tuber yield, quality and environment. The objective of this study was to characterize and quantify the spatial pattern of variability in soil properties and tuber yield to identify the influential factors causing fluctuation in crop yield to implement site-specific fertilization. Two fields were selected in Prince Edward Island, Canada and a grid pattern of sampling points was established at each experimental site to collect soil and yield samples. Soil samples were collected from 0-25 cm depth at each grid point. These soil samples were analyzed for soil organic matter, pH, texture, electrical conductivity and soil nutrients. The volumetric moisture content was recorded at each grid point using time domain reflectometry probes. Ground conductivity readings were also recorded using Dual EM conductivity meter at same selected grid points. Crop yield was collected from each grid point manually. The collected data were analyzed using statistical, geo-statistical and geo-graphical information tools to quantify spatial variability in soil properties and tuber yield within selected fields. Correlations matrix were developed to identify the yield limiting factors and their prediction potential was assessed via sensors. These results can help to develop map based variable rate technology to achieve site-specific fertilization within potato fields.
Keywords: Geo-statistics, GIS, kriging, spatial variability, potato production
Conference name: CSBE/SCGAB 2017 Annual Conference, Canad Inns Polo Park, Winnipeg, Manitoba, 6-10 August 2017.
Session name: Poster Session
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering