Long-term effects of high application rates of NPK fertilizer on tensil strength and water stability of the soil structure

שלום

עברית

מדריך מקוצר למשתמש מדריך מפורט למשתמש

חפש...

הספר "אוצר וולקני"

אודות

תנאי שימוש

פותח על ידי קלירמאש פתרונות בע"מ -

Long-term effects of high application rates of NPK fertilizer on tensil strength and water stability of the soil structure

Year: 

1990

Source of publication :

Geoderma

Authors :

הדס, אביבה

;

קווינטון, ג'

.

Volume :

Co-Authors: 

Hadas, A., Institute of Soils and Water, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel
Quinton, J., Institute of Soils and Water, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, 50250, Israel

From page: 

381

To page: 

392

(

Total pages: 

12

)

Link :

Long-term effects of high application rates of NPK fertilizer on tensil strength and water stability of the soil structure

Abstract: 

Intensive agricultural practices are thought to cause soil structure deterioration. The work reported herein aims to study and analyze the long-term effects exerted by high application rates of N,P,K fertilizer on soil structure as characterized by tensile strength, stability to water, friability, and bulk density of its structural units. No differences were found in the organic matter content between the control and the fertilized plots. Bulk density increased with diminishing the aggregates' diameter and this was attributed to shrinkage and not to differential effects brought about by different N,P,K amounts. In the dry state the structure was more friable and "smaller grained" under high P and without N fertilizers. Water stability was not affected by the differential N,P.K treatments when compared with the control. © 1990.