Long Term Effects of Continuous Rice Cultivation on Bulk Density and Hydraulic Conductivity of Gharbia Governorate Soils

Document Type : Original Article

Abstract

THE PRESENT study was carried out to investigate the effect of …….continuous non-puddling (dry tillage) transplanting rice cultivation for 5, 7 and 10-year period on soil bulk density and saturated hydraulic conductivity as soil quality indicators at Al-Gharbia Governorate located in the Middle Nile Delta, Egypt. The results indicated that continuous rice cultivation for 5 to 10 years period resulted in a slight migration of silt and clay contents to lower depths, degradation in soil bulk density and a decrease in saturated hydraulic conductivity. In addition, continuous rice cultivation was not substantial enough to eliminate dissimilarities of bulk density among soil depths. Moreover, a positive relationship has been observed between soil bulk density and finer particles (clay and silt) due to increased number of cultivation years and with soil depths. On the contrary, a negative relationship has been observed between soil hydraulic conductivity and finer particles due to increased number of cultivation years and with soil depths.

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History

  • Receive Date: 23 January 2013
  • Revise Date: 29 December 2013
  • Accept Date: 30 December 2013

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