
%0 Journal Article
%A Fettell, NA 
%A Gill, HS 
%T Long-term effects of tillage, stubble, and nitrogen management on properties of a red-brown earth
%J Australian Journal of Experimental Agriculture
%D 1995/11/01
%V 35
%N 7
%P 923-928
%K 
%R https://doi.org/10.1071/EA9950923
%U https://www.publish.csiro.au/paper/EA9950923 
%X Differences in soil organic carbon (C), total nitrogen (N), and pH resulting from 14 and 15 years of different tillage, stubble, and fertiliser N management practices were measured for a red-brown earth at Condobolin in western New South Wales. The 5 main treatments comprised stubble burning or retention in factorial combination with cultivation and direct drilling, and stubble incorporation combined with cultivation. Two rates of N fertiliser (0 and 40 or 50 kg/ha) were applied annually, and wheat was grown each year. There were no significant differences between tillage and stubble treatments for soil organic C, total N, or pH. Fertiliser N application caused small but significant increases in organic C and total N but decreased the pH of the surface 2.5 cm of soil by 0.4-0.5 units compared with the nil fertiliser rate. The study indicates that direct drilling and stubble retention with continuous wheat have had little long-term effect on soil organic C and total N in this low rainfall environment. 
