Residues from a buckwheat (<i>Fagopyrum esculentum</i>) green manure crop grown with phosphate rock influence bioavailability of soil phosphorus

Lynch, D. R.; Voroney, R. P.; Straaten, Peter van

doi:10.4141/cjss09023

Cited by 23 publications

(16 citation statements)

References 36 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This ability should also make buckwheat capable of extracting P from Ca-P minerals that exist in soils with neutral to high pH, minimizing the effect of PR additions on buckwheat P uptake. Arcand et al (2010) found buckwheat P uptake only increased when PR rates reached 800 kg total P ha −1 , a rate approximately 16-fold higher than used in our study. Shoot tissue P concentrations of mustard in this study were nearly twofold higher than of buckwheat or spring pea and at the upper end of the 2 to 3 g kg −1 threshold range needed for net P mineralization (Yadvinder-Singh and Khind 1992).…”

Section: Green Manure Biomass and P Uptakecontrasting

confidence: 57%

“…The lack of a change between 2006 and 2007 HCO 3 -P and NaOH-P concentrations in the presence of PR suggests a high P buffering capacity in soils at the site, consistent with a lack of a wheat P uptake response to either PR or GM. In a field experiment, Arcand et al (2010) found that PR rates up to 800 kg total P ha −1 increased Olsen P (HCO 3 -P) concentrations by less than 2 mg kg −1 compared to the control 10 to 12 months after PR application and buckwheat seeding in a pH 7.4 soil. This result demonstrates that our finding is not unique, nor attributable solely to relatively low P rates or relatively high Olsen P values.…”

Section: Winter Wheat Grain Yield and P Availabilitymentioning

confidence: 98%

“…The lack of a P rate effect on biomass production was likely caused by low PR solubility, moderately high soil test P levels, or growth limitation by N and/or water. In the only identified field study investigating the effects of PR on buckwheat, biomass was not affected by PR fertilization of a low available P soil (<10 mg kg −1 Olsen P; pH 7.4) at rates up to 800 kg total P ha −1 in southwestern Ontario Canada (Arcand et al 2010). The absence of a biomass response to PR was attributed to lack of P limitation or low PR solubility in this high pH soil.…”

Section: Green Manure Biomass and P Uptakementioning

confidence: 98%

See 2 more Smart Citations

Green manure and phosphate rock effects on phosphorus availability in a northern Great Plains dryland organic cropping system

et al. 2011

View full text Add to dashboard Cite

Maintaining or improving soil phosphorus (P) fertility is challenging for dryland organic producers in the northern Great Plains (NGP) of North America because of the region's high pH, calcareous soils combined with limited supplies of P-rich organic materials, such as manure. Certain inorganic P sources, such as phosphate rock (PR), are allowed on organic farms yet are sparingly soluble in neutral to alkaline soils. Green manure (GM) crops may improve availability of PR, yet little is known on their ability to dissolve PR in NGP soils. A 2-year cropping sequence study was conducted on a Montana farm that had been managed organically for 20 year. First-year crop treatments included spring pea (Pisum sativum L.), buckwheat (Fagopyrum esculentum L.), yellow mustard (Sinapis alba L.), and tilled fallow, fertilized with 0, 3.1, and 7.7 kg available P ha −1 as PR, and terminated at early pod stage with tillage. Following GM incorporation, winter wheat (Triticum aestivum L.) was sown in the fall and harvested at maturity. Aboveground P uptake of winter wheat was not affected by previous GM crop or PR rate, despite differences in GM P uptake amounts among crops and PR rates. Labile P fractions in the surface soil (0-0.15 m) were also not increased over pre-fertilization levels by PR rate or previous crop. The results suggest GMs have a limited ability to increase P availability of PR for a subsequent crop in this region.

show abstract

Section: Green Manure Biomass and P Uptakecontrasting

confidence: 57%

Section: Winter Wheat Grain Yield and P Availabilitymentioning

confidence: 98%

Section: Green Manure Biomass and P Uptakementioning

confidence: 98%

See 1 more Smart Citation

Green manure and phosphate rock effects on phosphorus availability in a northern Great Plains dryland organic cropping system

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Cover crops, green manures, and grain crops have been observed to mobilize sparingly soluble P from soil and fertilizers, sometimes increasing available soil P to subsequent crops. However the potential benefits depend on soil properties, including the amount and form of P in the soil, and the specific crop species combinations involved (Kamh et al, 1999; Cavigelli and Thien, 2003; Nuruzzaman et al, 2005; Arcand et al, 2010; Maltais‐Landry and Frossard, 2015; Pavinato et al, 2017; Doolette et al, 2019). As Menezes‐Blackburn et al (2018) discussed, plants with efficient P uptake mechanisms should be useful for mobilizing recalcitrant legacy P and helping make it available to the subsequent crop.…”

Section: Cropping System Design and Phosphorus Use Efficiencymentioning

confidence: 99%

Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

et al. 2019

View full text Add to dashboard Cite

Soil phosphorus (P) cycling in agroecosystems is highly complex, with many chemical, physical, and biological processes affecting the availability of P to plants. Traditionally, P fertilizer recommendations have been made using an insurance‐based approach, which has resulted in the accumulation of P in many intensively managed agricultural soils worldwide and contributed to the widespread water quality issue of eutrophication. To mitigate further environmental degradation and because future P fertilizer supplies are threatened due to finite phosphate rock resources and associated geopolitical and quality issues, there is an immediate need to increase P use efficiency (PUE) in agroecosystems. Through cultivar selection and improved cropping system design, contemporary research suggests that sufficient crop yields could be maintained at reduced soil test P (STP) concentrations. In addition, more efficient P cycling at the field scale can be achieved through agroecosystem management that increases soil organic matter and organic P mineralization and optimizes arbuscular mycorrhizal fungi (AMF) symbioses. This review paper provides a perspective on how agriculture has the potential to utilize plant and microbial traits to improve PUE at the field scale and accordingly, maintain crop yields at lower STP concentrations. It also links with the need to tighten the P cycle at the regional scale, including a discussion of P recovery and recycling technologies, with a particular focus on the use of struvite as a recycled P fertilizer. Guidance on directions for future research is provided. Core Ideas There is an urgent need to increase P use efficiency in agroecosystems. Crop yields could be maintained at lower than recommended soil test P concentrations. Both the quantity and quality of organic matter influence P availability. Further research on ability of organic P to supply P to crops is needed. Struvite has the potential to fill an important niche in P recycling.

show abstract

“…Constraints with respect to P release efficacy of mined phosphate rock, especially as they are sparingly soluble in the alkaline calcareous soils common to the northern Great Plains of North America, make this issue a further challenge [34,122]. In addition, livestock-based manure and compost sources are often in limited supply.…”

Section: Phosphorusmentioning

confidence: 99%

Environmental impacts of organic agriculture in temperate regions.

Lynch

Halberg²,

Bhatta³

et al. 2012

CABI Reviews

View full text Add to dashboard Cite

Can organic agriculture elaborate a scientifically based, resource-efficient and agroecological approach to low-input farm management? This review examines the literature from temperate regions, with a particular emphasis on Canadian and US studies that relate to environmental and ecological impacts of organic agriculture with respect to (i) soil organic matter storage, (ii) soil quality/soil health, (iii) nutrient loading and risks of off-farm nutrient and agrochemical losses, (iv) biodiversity and (v) energy use and global warming potential. The context and implications of semi-arid conditions and low soil P levels, common to many organic farms in North America, and widespread adoption of genetically engineered crops in conventional production, is also considered. The consensus of the data available to date indicates the distinctiveness of cropping, floral and habitat diversity, soil management regime, nutrient intensity and use efficiency, and energy, and pesticide use in organic farming confer important environmental and ecological benefits. These include maintenance of soil organic matter and added return of carbon to soil, improved soil health, reduced off-farm nitrogen and phosphorus losses, enhanced vegetative and wildlife (bird) biological diversity, extended sometimes to other taxa depending on landscape context, improved support for pollinators and pollination and reduced energy use and improved energy efficiency. The continued evolution of organic agriculture to a more outcomes-based, agroecological production system will require an expanded multi-disciplinary research effort, linked ideally to support from consumers and policy-makers on the basis of renewed understanding of its potential contribution to global environmental sustainability.

show abstract

Residues from a buckwheat (Fagopyrum esculentum) green manure crop grown with phosphate rock influence bioavailability of soil phosphorus

Cited by 23 publications

References 36 publications

Green manure and phosphate rock effects on phosphorus availability in a northern Great Plains dryland organic cropping system

Green manure and phosphate rock effects on phosphorus availability in a northern Great Plains dryland organic cropping system

Options for Improved Phosphorus Cycling and Use in Agriculture at the Field and Regional Scales

Environmental impacts of organic agriculture in temperate regions.

Contact Info

Product

Resources

About