EFFECT OF APPLICATION OF SOME ORGANIC PLANT RESIDUE AND THEIR QUEOUS EXTRACTS ON ELECTRICAL CONDUCTIVITY AND PH OF SOIL

M.Abu-Dahi, Yousef; Ahmed Al-Nasiry, Ayad

	EFFECT OF APPLICATION OF SOME ORGANIC PLANT RESIDUE AND THEIR QUEOUS EXTRACTS ON ELECTRICAL CONDUCTIVITY AND PH OF SOIL
The Iraqi Journal of Agricultural Science
Article 1, Volume 38, Issue 1, 2007, Pages 36-44
Authors
Yousef M.Abu-Dahi; Ayad Ahmed Al-Nasiry
Abstract
Three biological experiments were conducted in the lathing house belong to the Dept. of Soil and Water Science -Univ. of Baghdad - College of Agric.-Abu-Ghraib to study the effects of application of four organic plant residues peat and their aqueous extracts on electrical conductivity and pH of soil. These organic plant residues were: common liquorice, Eucalyptus bark,Corn cobs and Reed strow. The three biological experiments (according to the method of application) were implemented on the basis of Completely Randomized Design (CRD) with three replicates by using plastic pots which contain 4 kg of soil per pot. The pots were planted with corn cv. (Bohooth 106). The amount of 100 mg N. kg'1 soil as urea (46% N) and 20 mg P.kg'1 soil as super phosphate (20%P) and 48 mg.K kg'1 soil as potassium sulfate (42% K) were used as sources for NPK-fertilizers respectively. Results indicated that the addition of some organic plant residues in their solid phase didn't lead to any significant increasing in the potential of Hydrogen (pH) or in the electrical conductivity (Ec). While the addition of the aqueous extracts of common liquorice and Reed straw gave 48% and 29% significant increacing by irrigation and foliar application in (Ec) compared with control treatment respectively. As concerns the pH , the aqueous exctracts of Corn cobs and Eucalyptus bark gave 3.2 % and 2.2% significant increasing by irrigation and foliar application in pH compared with treatment respectively.

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