Spatial Variability of Soil Moisture Content Under Border Irrigation System and It’s Relationship With Wheat Growth | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 16, Issue 3, September 2016, Pages 193-209 | ||
| Authors | ||
| Omar Nazar Abdulghaffar Al-Nasiri; A.W. Al-Kayssi | ||
| Abstract | ||
| Field experiment was carried out at Goran agricultural field in Kara Hanjeer distract / Kirkuk, cultivated with wheat, to evaluate the spatial variation of soil moisture content. Soil moisture content was measured on stations along 10 m transect where the distance between the stations 25cm. Soil samples were obtained by mini auger for 3 depths (0-5cm, 5-10cm and 10-20cm) during three periods of wheat growth (flowering , ripening and harvesting). Soil samples were dried by Microwave oven.Data sets were analyzed according to the traditional statistic tools as well as geostatistics concepts (autocorrelogram and variogram). Results showed that the soil moisture content did not distributed normally according to the traditional statistics concepts. The central measures values (mean, median and mode) were convergent. The dispersion measures values (range, variance, coefficient of variation and standard deviation) in the ripening stage were higher than the flowering and harvesting stages. Autocorrelogram indicates that there was a weak special distance dependence of soil moisture content. The range of influence was about 175cm for all soil depths. Spherical variogram model indicates the precence of a spatial variation of soil moisture content ranged between 350cm and 950cm with an moderate spatial dependence class for all studied soil depths and growth stages. | ||
| Keywords | ||
| Spatial Variability; Soil Moisture; Border Irrigation System; Wheat Growth | ||
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