Émilie Maillard

Agriculture and Agri-Food Canada | AAFC · Quebec Research and Development Centre

Background Defining the long-term effects of liquid dairy manure (LDM) applied by a recommended low emission method is important to ensure sustainable grass production and dairy operations. We used natural abundance δ15N and conventional measurements in a long term field experiment to better understand the long-term fate of N applied as LDM, minera...

Repeated applications of liquid dairy manure (LDM) and perennial crops generally favor nitrogen (N) stocks in soils, but in ways that may differ with soil type and other management practices. The objective of this study was to assess the long-term (21 yr) changes in soil N stocks (0–50 cm) of a silty clay soil, in a cool humid climate, in response...

Researchers may consider the soil effects for one phase representative for the entire long-term rotation. We showed that soil carbon can differ between rotation phases. We recommend sampling all phases for determining the tillage effect across the rotation and, otherwise, to interpret considering potential impacts of sampling one rotation phase.

For both agronomic and environmental purposes, it is relevant to assess the effect of various land management practices on soil organic carbon (SOC). In the North American Great Plains, fallowing was used to increase soil water storage and production of succeeding crops. In addition, tillage was done to prepare seed beds and to control weeds. But t...

There is an important need to better understand how the soil organic carbon (SOC) stocks affect the global atmospheric C balance. Grasslands represent 40% of the earth’s land surface but efficiently and effectively quantifying their SOC stocks and their changes is a challenge. Although factors influencing the variability of grassland SOC stocks suc...

The impact of animal manure application on soil organic carbon (SOC) stock changes is of interest for both agronomic and environmental purposes. There is a specific need to quantify SOC change for use in national greenhouse gas (GHG) emission inventories. We quantified the response of SOC stocks to manure application from a large worldwide pool of...

In the context increasing atmospheric CO2 concentration, there is a growing interest for using afforestation and reforestation to claim emissions reductions. Establishment of plantations necessarily involves silvicultural treatments that affect environmental conditions and hence soil microbial communities, influencing carbon and nitrogen cycles and...

Afforestation and reforestation are considered important tools for mitigating fossil fuel emission; however, establishment of plantations necessarily involves several silvicultural treatments that may influence soil organic C sequestration and, potentially, its relative stability. An experimental design established 20 yr ago, consisting of plantati...

In France, in order to prevent imbalances and accumulation of nutrients in the plant root zone, most of the soilless crops in glasshouses are cultivated in open drainage systems, which leads to water and fertilizer losses. The goal of the EU project CLOSYS (CLOsed SYStem for water and nutrient management) was to build a prototype which delivers wat...

Road obliteration, the process of removing culverts, restoring stream gradient, and recountouring the road to match the hillside, is one of the tools to deal with excess forest roads. After road obliteration former stream crossings are locations where sediment travel distances to the aquatic environment are short. A study to determine the infiltrat...