Two Pulse-oilseed Intercrop Combinations to Enhance Yield and Nutrient Availability in Saskatchewan
Bibliographic record
Abstract
The interest in growing pulse-oilseeds together as intercrop combinations in western Canada is increasing, but little is known about the operative nutrient dynamics that drive the observed synergies. Two promising pulse-oilseed combinations (kabuli chickpea-brown flax and dry pea-white mustard) were grown as intercrops in mixed and alternate row configurations in two contrasting soil zones (Brown Chernozem and Black Chernozem) in southern Saskatchewan in 2019 and 2020 without added fertilizer along with their corresponding traditional monocrop systems. Comparison was made of grain and straw yields and nitrogen (N) and phosphorus (P) uptake, proportion and amount of biologically fixed N contributed from the pulse crops, and the transfer of fixed N to the oilseed crops. The two pulse-oilseed intercrops grain yield land equivalent ratios (LER) values, N uptake LER values, and P uptake LER values were at or above 1 for the four site-years, indicating benefit from intercropping in increasing total yield, N and P uptake from a land area. The proportion of N derived from biological N fixation (BNF) was not enhanced in the two intercrop combinations, but significant biologically fixed N (9% - 41%) was transferred from the pulse crops to the oilseed crops that reduced depletion of soil N and contributed additional N in the intercrops compared to monocrops. \n Supporting evidence for synergy in nutrient availability in the intercropping systems was found in consistently greater concentrations of water extractable organic carbon (WEOC) and total dissolved N (TDN) found in the root zone of the pulse crop partners (kabuli chickpea, dry pea) alone and in the mixes with non-pulse partners (brown flax, white mustard) at both Redvers and Central Butte sites in both years. Enhanced nutrient availability was provided by the pulse crop partner with greater Plant Root Simulator (PRS™) nitrate (NO3-N) supply rates observed in the root zone of the pulse crop mixes over the season. \n Overall, the results of this study show benefits can be realized from intercropping of kabuli chickpea-brown flax and dry pea-white mustard in yield and nutrient utilization efficiency from a land area, improved nutrient use efficiency, and synergies.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".