scholarly journals Apparent Electrical Conductivity in Correspondence to Soil Chemical Properties and Plant Nutrients in Soil

2011 ◽  
Vol 42 (12) ◽  
pp. 1447-1461 ◽  
Author(s):  
A. Gholizadeh ◽  
M. S. M. Amin ◽  
A. R. Anuar ◽  
W. Aimrun
Keyword(s):  
Electrical Conductivity ◽  
Chemical Properties ◽  
Plant Nutrients ◽  
Soil Chemical Properties ◽  
Apparent Electrical Conductivity

scholarly journals Measurement of apparent electrical conductivity of soil and the spatial variability of soil chemical properties by electromagnetic induction

2016 ◽  
Vol 11 (39) ◽  
pp. 3751-3762 ◽  
Author(s):  
Machado Siqueira Glecio ◽  
Dafonte Dafonte Jorge ◽  
Paz Gonzalez Antonio ◽  
Valcarcel Armesto Monteserrat ◽  
Farias de Franca e Silva Enio ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Spatial Variability ◽  
Electromagnetic Induction ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Apparent Electrical Conductivity

scholarly journals Spatial variability of apparent electrical conductivity and soil properties in a coffee production field

2014 ◽  
Vol 34 (6) ◽  
pp. 1224-1233 ◽  
Author(s):  
Domingos S. M. Valente ◽  
Daniel M. de Queiroz ◽  
Francisco de A. de C. Pinto ◽  
Fábio L. Santos ◽  
Nerilson T. Santos
Keyword(s):  
Electrical Conductivity ◽  
Spatial Variability ◽  
Soil Properties ◽  
Precision Agriculture ◽  
Chemical Properties ◽  
Coffee Production ◽  
Management Zones ◽  
Apparent Electrical Conductivity ◽  
The Relationship ◽  
Dense Sampling

Precision agriculture based on the physical and chemical properties of soil requires dense sampling to determine the spatial variability of these properties. This dense sampling is often expensive and time-consuming. One technique used to reduce sample numbers involves defining management zones based on information collected in the field. Some researchers have demonstrated the importance of soil electrical variables in defining management zones. The objective of this study was to evaluate the relationship between the spatial variability of the apparent electrical conductivity and the soil properties in the coffee production of mountain regions. Spatial variability maps were generated using a geostatistical method. Based on the spatial variability results, a correlation analysis, using bivariate Moran's index, was done to evaluate the relationship between the apparent electrical conductivity and soil properties. The maps of potassium (K) and remaining phosphorus (P-rem) were the closest to the spatial variability pattern of the apparent electrical conductivity.

Soil chemical changes following manure application on irrigated alfalfa and rainfed timothy in southern Alberta

2006 ◽  
Vol 86 (1) ◽  
pp. 119-132 ◽  
Author(s):  
Barry M. Olson ◽  
Lawrence W. Papworth
Keyword(s):  
Electrical Conductivity ◽  
Management Practices ◽  
Bos Taurus ◽  
Block Design ◽  
Chemical Properties ◽  
Phleum Pratense ◽  
Soil Chemical Properties ◽  
Runoff Water ◽  
Manure Application ◽  
Application Rates

In areas within Alberta where suitable cultivated land is not available, or for convenience, the use of forage land is an alternative for manure application. However, there is limited research on the effects of manure on forage land in the province. The objective of this 5-yr study was to determine the effects of manure on soil chemical properties of forage land. Cattle (Bos taurus L.) and hog (Sus scrofa L.) manures were applied at five rates on irrigated alfalfa ( Medicago sativa L.) and on rainfed timothy(Phleum pratense L.) sites. Treatments were replicated four times and arranged in a randomized complete block design. Soil samples (0 to 15, 15 to 30, 30 to 60, 60 to 90, 90 to 120, and 120 to 150 cm) were collected each spring prior to manure application. Manure application on forage land significantly affected soil chemical properties such as increases in NO3-N, PO4-P, K, Na, and electrical conductivity. There was also evidence of accumulation and some downward movement of NO3-N, Na, and K below 15 cm. The higher manure application rates used in this study (>31 Mg ha-1 cattle manure and >42 Mg ha-1 hog manure; wet weight) are not sustainable in terms of potential environmental risk, such as leaching of NO3-N to groundwater, loss of P in runoff water, and increased soil salinity. Appropriate application rates should be based on crop nutrient requirements and management practices that include regular manure and soil testing. Key words: Alfalfa, timothy, manure, hog, cattle, soil nutrients, electrical conductivity

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