Development of soil profile temperature prediction models for bare and solarized field conditions
2015
Harshvardhan, Chauhan (NMAM Institute of Technology, Karnataka (India). Department of Computer Science and Engineering) | Dhruj, I. U. (Junagadh Agricultural University, Gujarat (India). Directorate of Research) | Chauhan, P. M. (Junagadh Agricultural University, Gujarat (India). College of Agricultural Engineering and Technology)
Soil solarization is a simple and effective technique for controlling problems like weeds and soil borne pathogens by means of increasing moist soil temperature through trapping heat by using the thin transparent polyethylene sheet for few weeks. The soil temperature models 'SOILTEMP' were developed to predict the diurnal variation of soil profile temperature at various depths for solarized (mulch covered) and bare soil by incorporating different types of input data. The accuracy of models was evaluated using model efficiency coefficient (E). Except for bare soil at 15 cm depth, positive values of E were obtained whereas at 15 cm depth for bare soil negative E values of E were observed. The highest E=0.92 was obtained at 5 cm depth for solarized soil and weekly average data whereas lowest one (E= 0.39) obtained at 10 cm depth for bare soil and biweekly data. The developed models will be useful to predict the soil profile temperature and to study the effect of various input parameters to achieve desired effect of soil solarization without conducting the experiments and thereby to save cost and time.
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