Abstract:
Plants growth and development, water and soil solution are highly connected to its physical properties. Application of
synthetic polymers as soil conditioners improves soil physical properties which increase soil resistance against
disruptive forces and erosion. The objective of this study was to establish the direct effect of carboxylic polyelectrolyte
“Ponilit GT1” on soil structure and indirectly on some physical properties, bulk density, total porosity and penetration
resistance. The researches have been conducted at the Didactical and Experimental Research Station Ezareni belonging
to ’’Ion Ionescu de la Brad’’ University of Agriculture Sciences and Veterinary Medicine Iasi, Romania. A randomized
complete block design with three replications was used in the experiment. Carboxylic polyelectrolyte ”Ponilit GT1”
was applied at 0.1% and 0.3% concentrations. Soil structure development was evaluated by comparing the structural
parameters treated with those untreated with carboxylic polyelectrolyte. The result of this study shows increased values
of studied parameters after application of carboxylic polyelectrolyte within sowing-emergence period and only 0-5 cm
depth. Because the thickness of the soil treated with polymeric substances is small, the values of studied parameters in
12-15 cm depth and 22-27 cm respectively, are not significantly different remaining within limits close to control.
