Effects of Short-term Tillage of a Long-term No-Till Land on Available N and P in Two Contrasting Soil Types

Dyck, Miles; Malhi, S. S.; Nyborg, M.; Puurveen, D.

doi:10.5539/sar.v4n4p27

Cited by 3 publications

(2 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Proposing that this theory is flawed, our results suggest that correcting for the most critical yieldlimiting factor (i.e., in our case fungal disease management) could serve as a conservative approach to improve yields. Similarly, previous research found that integrated agronomic practices such as N rate and fungicide (de Oliveira Silva et al, 2020a), tillage and N rate (Dyck et al, 2015), sowing date and N rate (Ehdaie & Waines, 2001), plant density and genotypes (Laghari et al, 2011), could efficiently help to meet plant nutrient requirements and increase wheat yields in dryland environments (de Oliveira Silva et al, 2020a;Raza & Saleem, 2013).…”

Section: Impacts Of Agronomic Practices On Grain Yield and Uptake Of N P K And Smentioning

confidence: 77%

Wheat nitrogen, phosphorus, potassium, and sulfur uptake dynamics under different management practices

et al. 2021

View full text Add to dashboard Cite

Information is limited on the effect of intensified management on winter wheat (Triticum aestivum L.) nutrient uptake dynamics. Our goal was to evaluate the effect of agronomic practices on wheat yield and uptake of N, P, K, and S by evaluating the (a) nutrient utilization and uptake at varying yield levels, (b) variation in nutrient concentration as function of biomass, and (c) plant nutritional status. The genotype 'Everest' was grown under standard (SM) and intensive (IM) management. Treatments (i.e., N, Cl, and S fertilizers, fungicide, plant density, and growth regulator) were individually added to the SM or removed from the IM controls. The IM control increased yield by as much as 0.9 Mg ha −1 and uptake of N, K, and S by 37, 30, and 60%, respectively, relative to the SM control, with no changes in P uptake. Fungicide was the main treatment limiting yield and nutrient uptake, and its removal from the IM control reduced yield by 1 Mg ha −1 and nutrient uptake in high diseasepressure seasons. Across all treatments and nutrients, 20% of the uptake at maturity was accumulated by stem elongation, 50% at flag leaf, and 70% at heading. The IM control maintained higher shoot nutrient concentration relative to the SM control during the season, increasing nutrition indices for N and S, and indicating possible luxury uptake under IM. Intensification strategies may increase nutrient demand but it does not seem to affect the overall timing and rate of uptake during the season.

show abstract

Section: Impacts Of Agronomic Practices On Grain Yield and Uptake Of N P K And Smentioning

confidence: 77%

Wheat nitrogen, phosphorus, potassium, and sulfur uptake dynamics under different management practices

et al. 2021

View full text Add to dashboard Cite

show abstract

“…This information is needed, since there is very limited research on the effects of tillage of previously long-term NT soil on crop yield and nutrient uptake, soil fertility, and persistence of organic C in soil that was gained/stored under NT on individual farm fields (Lal et al, 1990;Campbell et al, 1988Campbell et al, , 1996Campbell et al, , 1998Hassink, 1997;Yang & Kay, 2001a;Six et al, 2002b;Vandenbygaart & Kay, 2004;Baan et al, 2009), especially in the Parkland region of western Canada where large quantities of crop residue are produced and left on land after harvest. The objectives of this study were to examine the effects of short-term (2 or 3 years) pre-seeding shallow tillage (hereafter called reverse tillage -RT) of land previously under long-term NT (29 or 30 years) on crop yield and nutrient uptake [seed and straw yield, N and P uptake in seed and straw of annual cereals/oilseeds]; soil quality [total organic C (TOC) and N (TON), light fraction organic C (LFOC) and N (LFON) and mineralizable N (N min ) in the 0-7.5 and 7.5-15 cm soil layers]; and soil fertility [nitrate-N, ammonium-N, extractable P, exchangeable K and sulphate-S in the 0-7.5, 7.5-15 and 15-20 cm soil layers] in two contrasting soil types (a Gray Luvisol soil at Breton and a Black Chernozem [Albic Argicryoll] soil at Ellerslie, Alberta, Canada; Dyck et al, 2015Dyck et al, , 2016. This paper discusses the effects of RT on soil quality parameters, related to quantity and quality of soil organic C and N.…”

Section: Introductionmentioning

confidence: 99%

Effects of Short-term Tillage of a Long-term No-Till Land on Quantity and Quality of Organic C and N in Two Contrasting Soil Types

Dyck¹,

Malhi²,

Nyborg³

et al. 2016

SAR

Self Cite

View full text Add to dashboard Cite

Pre-seeding tillage of long-term no-till soil may alter soil quality by changing some properties, but the magnitude of change depends on soil type and climatic conditions. Effects of short-term (2 or 3 years) tillage (hereafter called reverse tillage [RT]) of land previously under long-term no-till (NT, 29 or 30 years), with straw management (straw removed [S Rem ] and straw retained [S Ret ]) and N fertilizer rate (0, 50 and 100 kg N ha -1 in S Ret , and 0 kg N ha -1 in S Rem plots) were determined in autumn 2011 on total organic C (TOC) and N (TON), light fraction organic C (LFOC) and N (LFON), and mineralizable N (N min ) in the 0-7.5, 7.5-15, or 15-20 cm soil layers at Breton (Gray Luvisol [Typic Cryoboralf] loam) and Ellerslie (Black Chernozem [Albic Argicryoll] loam), Alberta, Canada. Short-term RT following long-term NT had no significant negative effect on TOC and TON in soil at both sites, although these parameters tended to be slightly lower in the 0-7.5 cm soil layer with RT compared to NT. For the zero-N treatment, S Ret had greater TOC and TON compared to S Rem in both soil layers at both sites. On average, over both sites, TOC and TON in the 0-15 cm soil increased by 2.08 Mg C ha -1 and 0.216 Mg N ha -1 , respectively. Application of N fertilizer increased TOC and TON in both soil layers, up to the 50 kg N ha -1 rate at Breton (by 7.96 Mg C ha -1 and 0.702 Mg N ha -1 in the 0-15 cm soil) and up to the 100 kg N ha -1 rate at Ellerslie (by 5.11 Mg C ha -1 and 0.439 Mg N ha -1 in the 0-15 cm soil). In both RT and NT treatments, the effects of N rate on TOC and TON were similar for S Ret and S Rem. There was greater LFOC and LFON in the 7.5-15 cm soil layer with RT than NT at both sites. In the 0-15 cm soil layer, averaged over both sites, RT increased LFOC by 66 kg C ha -1 and LFON by 4.0 kg N ha -1 . In both 0-7.5 and 7.5-15 cm soil layers, LFOC and LFON increased with S Ret compared to S Rem. Averaged over both sites, the increase in LFOC and LFON in the 0-15 cm soil was 97 kg C ha -1 and 3.5 kg N ha -1 , respectively. Mass of LFOC and LFON increased dramatically in both soil layers with application of N fertilizer up to the 100 kg N ha -1 rate at both sites, with an average increase of 866 kg C ha -1 and 45.5 kg N ha -1 . In the zero-N treatment, LFOC and LFON increased with S Ret compared to S Rem under RT at Breton and under NT at Ellerslie. On average, tillage had no effect on N min in soil, but S Ret increased N min in soil in both RT and NT, with an average increase of 4.8 kg N ha -1 . Application of N fertilizer increased N min in the 0-20 cm soil up to 50 kg N ha -1 rate at Breton (by 13.7 kg N ha -1) and up to 100 kg N ha -1 rate at Ellerslie (by 18.6 kg N ha -1 ). In conclusion, RT had no effect on TOC, TON and N min in soil, but LFOC and LFON increased with RT compared to NT in the 7.5-15 cm layer at one site. S Ret and N fertilization usually had dramatic positive effects on TOC, TON, LFOC, LFON and N min in soil compared to the corresponding treatments.

show abstract

Soil structure dynamics in annual croplands under controlled traffic management

et al. 2019

View full text Add to dashboard Cite

Soil samples were collected from commercial agriculture sites within western Canada that were subjected to compaction from farm equipment in both conventional (imposed) traffic and controlled traffic regimes. Soil characteristics such as bulk density, pore volume fractions, and unsaturated hydraulic conductivity were compared with soil physical quality parameters, such as S-index and mass fractal aggregation between trafficked and untrafficked field areas. Our results showed that untrafficked soil characteristics displayed substantial improvements over those exposed to equipment compaction. Untrafficked soils in the controlled traffic regime exhibited total porosity improvements up to 15% in more than half of the study sites. In addition, spatial reductions of equipment compaction increased the volume of soil pore diameters associated with preferential water transmission from 40% to 180%. Changes in these soil characteristics within untrafficked soils correlated well with enhancements in the soil structure metrics, as improvements to the S-index were coupled with evidence of hierarchical aggregation. Irrespective of the positive changes to soil structure, significant increases in crop yield were rarely observed in favor of a controlled traffic regime. Our results suggest that the integration of controlled traffic farming into management systems may take several years for the benefits to soil physical quality to translate into observable improvements in crop yield.

show abstract

Effects of Short-term Tillage of a Long-term No-Till Land on Available N and P in Two Contrasting Soil Types

Cited by 3 publications

References 49 publications

Wheat nitrogen, phosphorus, potassium, and sulfur uptake dynamics under different management practices

Wheat nitrogen, phosphorus, potassium, and sulfur uptake dynamics under different management practices

Effects of Short-term Tillage of a Long-term No-Till Land on Quantity and Quality of Organic C and N in Two Contrasting Soil Types

Soil structure dynamics in annual croplands under controlled traffic management

Contact Info

Product

Resources

About