Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
July 2015 Vol. 4(7): pp. 361-367
Copyright © 2015 Global Advanced Research Journals

 

Full Length Research Paper

Effect of different soil conditioners application on some soil characteristics and plant growth I-Soil moisture distribution, barley yield and water use efficiency

Ebtisam I. Eldardiry and M.Abd El-Hady

 

Water Relations and Field Irrigation Dept. National Research Centre, El-Buhouth St., Dokki, Cairo, Egypt

*Corresponding Author’s Email: ebtisameldardiry@gmail.com

Accepted 16 July, 2015

 

Abstract

Field experiment was carried out in Research and Production Station, National Research Centre, El-Nobaria, El-Beheara Governorate, Egypt during the season of 2013 on a sandy loam soil ( 23% silt; 8% clay ).  The experimental design was randomized completely block in sex replicates.  Barley (Hardiumvulgare L.) Giza 124 was sown and irrigated by sprinkler irrigation with total amount of irrigation water 405 mm/season.  The aim of the work is to study the effect of bentonite (as a soil conditioner) application rates on the some soil properties and barley plant growth comparing with FYM effect in common application rate (2%).  Bentonite used is characterized by clay in texture, 4.8 dSm-1, 7.88, 4.6 % and 1.8 % for ECe, pH, CaCO3 and organic matter content.  Bentonite application rates were  0, 2, 4, 6 and 8 %, in addition to farm yard manure treatment (FYM) at 2 %. Half of the plots were treated by bentonite examined rates in two equal doses (50%), the first one applied before maize and the second one during soil preparation for sowing barley. The obtained results showed that increasing bentonite rates to treated soil associate with increase in soil moisture content on weight base in all studied depths and the rate of increase clearly observed in the first and second examined depths (0-15 and 15-30 cm) in the 1st rate (2%) by 24% and 14.5 % in previous sequences.  Water content before irrigation was not far from values of that after irrigation that means increase ability of soil to retain more water and the increase was 43 % if 2 % bentonite was applied and 89.7 % when sandy soil treated by 8 % bentonite.  Whereas, 2 % FYM increased soil moisture content by about 25.6 % (comparing with control) in the 1st depth.Application bentonite in two doses had a superior effect on water use efficiency (WUE) of barley grain yield more than one dose. The best bentonite application rates that fulfill maximize WUE of grains of barley were 6 in one or two dose of application.

Keywords: sandy loam, bentonite, water distribution, barley, yield, WUE.


 

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