Effect of zero-till continuous wheat on soil quality after four and six years
dc.contributor.author | Campbell, C.A. | |
dc.contributor.author | Biederbeck, V.O. | |
dc.contributor.author | Schnitzer, M. | |
dc.contributor.author | Selles, F. | |
dc.contributor.author | Monreal, M. | |
dc.date.accessioned | 2018-09-22T17:41:00Z | |
dc.date.available | 2018-09-22T17:41:00Z | |
dc.date.issued | 1987-02-19 | |
dc.description.abstract | After four and six years of continuous spring wheat cropping using zero-tillage on the N × P × Snow-trap test site, soil samples were taken from the test area and from the adjacent area which has been in a wheat-fallow rotation for over 70 years. Biological characterization of these soil samples have shown that zero-tillage has already improved the potential productivity of the test site. For example, the amount of organic matter C and N have been increased in the 0-7.5 cm depth, as have CO₂ respiration, the potentially mineralizable N (and thus N mineralization), amino acids, and the neutral phosphatase activity. However, no significant changes in microbial biomass C or N, alkaline phosphatase or urease in the 0-7.5 cm depth were found. There was little change in N or C mineralization or soil enzyme activity noted in the 7. 5 to 15 cm depth. Evidence in support of the improvement in soil productivity is the fact that in 1986, a year of above average precipitation, yield response to N and P was insignificant on test plots where yields ranged between 2550 and 2750 kg/ha for N fertilizer ranging from 25 to 100 kg/ha. In contrast, on adjacent stubble-cropped land, response to N applied was substantial. | en_US |
dc.description.version | Non-Peer Reviewed | |
dc.identifier.uri | http://hdl.handle.net/10388/10869 | |
dc.language.iso | en | en_US |
dc.relation.ispartof | Soils and Crops Workshop | |
dc.rights | Attribution-NonCommercial-NoDerivs 2.5 Canada | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.5/ca/ | * |
dc.title | Effect of zero-till continuous wheat on soil quality after four and six years | en_US |
dc.type | Presentation | en_US |