H. Henry Janzen

TL;DR: In this article, the authors developed new estimates of partitioning between the harvested portion, aboveground residue, and belowground residue for 11 major crops based on depth-adjusted root/shoot ratios and grain yield-adjusted harvest indices.

TL;DR: In this article, the authors estimated the N balance for Canadian agroecosystems based on 2016 data and used similar but updated assumptions and coefficients to recalculate estimates from a previous study based on 1996 data.

TL;DR: In this article, a controlled environment study was conducted to investigate the effect of termination technique on the availability of N to four barley (Hordeum vulgare L) crops four treatments consisting of a factorial combination of two termination methods (chemical, mechanical and two methods of residue placement (surface, incorporated) were established Nitrogen uptake by the four consecutive crops of barley was measured during a 125-d period after termination.

TL;DR: In this article, the Canadian ammonia (NH 3 ) emissions model and a survey of dairy farm practices were used to quantify effects of management on emissions from dairy farms in Ontario Canada.

TL;DR: Larney et al. as mentioned in this paper studied the residual effect of one-time manure, crop residue and fertilizer amendments on a desurfaced soil and found that residual effect on total nitrogen (N) and phosphorus (P) were apparent 11.5 to 19.5 yr after application.