Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
June 2016 Vol. 5(6): pp. 183-194
Copyright © 2016 Global Advanced Research Journals


Full Length Research Paper

Soil Water Relations of an Ultisol amended with Agro-wastes and its effect on grain yield of maize (Zea mays L.) in Abakaliki, Southeastern Nigeria

Nwite, J. N1. and Okolo, C.C2.


1Department of Soil Science and Environmental Management, Faculty of Agriculture and Natural Resources Management Ebonyi State University, PMB 053, Abakaliki

2Trecc Africa Ph.D Scholar, Mekelle University, Ethiopia


Accepted 01 June, 2016



Soil water relations of an ultisol amended with agro-wastes and its effect on grain yield of maize (Zea mays L.) was studied for three cropping seasons. The field was laid out in randomized complete block design using four treatments of control and three agro-wastes at 8kg/plot. The texture of soil remained sandy loam throughout the period of study. Agro-wastes amended plots had significantly (P<0.05) lower bulk density and higher total porosity for two seasons and in residual season. There were significantly (p<0.05) higher effect of bulk density, total porosity and aggregate stability on moisture retention, availability and transmission for 2013 and 2014 cropping seasons as well as in 2015 study season except for aggregate stability on hydraulic conductivity in 2013 season. Plot amended with burnt rice mill waste was higher in water retention, available water capacity and hydraulic conductivity by 2, 3, 2%: 4, 5, 3%: 2, 3, 1% and 11% respectively compared to those of fresh rice mill waste and saw dust amended plots for the three cropping seasons. Grain yields of maize were significantly (P<0.05) higher in plots amended with agro- wastes compared to control for three seasons. Agro- wastes amendment of soil should be carried out for enhanced soil physical conditions, soil water relations and for sustainable productivity. 

Keywords: Agro-wastes, Effect, Grain Yield, Maize, Soil Water relations, Utisol.    


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