Below-ground plant biomass and nitrogen uptake of perennial forage grasses and annual crops fertilized with pig manures

Lasisi, Ahmed; Akinremi, O. O.; Tenuta, Mario; Cattani, Douglas J.

doi:10.1016/j.agee.2018.08.006

Cited by 13 publications

(11 citation statements)

References 35 publications

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“…Monoliths were collected from selected three treatments from an ongoing field study, each having four replicate plots. The selected treatments were (a) control (unamended), (b) amended with SSM, and (c) amended with LSM, where SSM and LSM were applied at N‐based application rates for canola ( Brassica napus L. ‘Argentine’ Conventional and ‘Liberty‐Link’ tolerant) and barley ( Hordeum vulgare L. ‘Tradition’) (Karimi, Akinremi, & Flaten, 2017, 2018; Lasisi, Akinremi, Tenuta, & Cattani, 2017, 2018). For the manure‐amended treatments, SSM and LSM were applied annually from 2009 to 2015, based on N crop requirements (Supplemental Table S1).…”

Section: Methodsmentioning

confidence: 99%

Phosphorus release from intact soil monoliths of manure‐amended fields under simulated snowmelt flooding

et al. 2020

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Anaerobic conditions developed in soils with flooding can enhance the release of soil P to overlying water, but little information is available for soils with a long history of manure application. We examined the P release from manure‐amended soils under simulated snowmelt flooding. Intact monoliths from manured (solid swine manure [SSM] or liquid swine manure [LSM]) and unamended (control) field plots were collected from Carman, Manitoba. Monoliths were frozen for 7 d, thawed, flooded, and incubated at 4 ± 1 °C. Redox potential, pH, and concentrations of dissolved reactive P (DRP), Ca, Mg, Fe, and Mn in pore water and floodwater were determined weekly up to 56 d after flooding (DAF) and at 84 DAF. Redox potential decreased with DAF with a greater and more rapid decrease in SSM (from ∼300 to <0 mV by 84 DAF) compared with LSM and control (∼100 mV by 84 DAF). Pore water and floodwater DRP concentrations were significantly greater in manured treatments than in the control at all DAFs and in SSM than in LSM for most DAF. Whereas floodwater DRP concentrations remained relatively stable in the control treatment, concentrations in manured treatments increased substantially from the onset of flooding to 35–42 DAF (threefold to fourfold increase) and remained relatively stable thereafter. Significantly greater P release from SSM‐ than from LSM‐treated monoliths was due to greater input of P and the higher organic matter content in SSM‐treated soils. These favored the rapid development of anaerobic conditions that further induced P release.

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Section: Methodsmentioning

confidence: 99%

Phosphorus release from intact soil monoliths of manure‐amended fields under simulated snowmelt flooding

et al. 2020

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“…An additional benefit of the system implemented in this study is the use of a perennial species of forage to minimize nitrate leaching [42,75]. The larger root biomass of perennial forages and their nutrient uptake reduce leachate under the root zone in comparison with annual crops [76].…”

Section: Soil Nutrientmentioning

confidence: 99%

Sows-Gilts Stocking Rates and Their Environmental Impact in Rotationally Managed Bermudagrass Paddocks

Pietrosemoli

Green

Villamide

2020

Animals

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Ground cover maintenance and nutrients management are key elements to reduce the environmental impact of outdoor swine production. The objective of this study was to determine the effects of sows-gilts stocking rates on vegetative ground cover and soil nutrient concentrations in rotationally stocked bermudagrass (Cynodon dactylon L. Pers) pastures. Three stocking rates (10, 15 and 25 sows-gilts ha−1) were compared during three 8-week grazing periods. Increasing the stocking rate from 10 to 25 sows-gilts ha−1 decreased the ground cover of the paddocks from 65 to 48%, and increased soil nutrient concentrations (ammonium 47%; nitrate 129%; phosphorus 53%; zinc 84%; and copper 29%).

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“…Applying those root/shoot ratio factors to the aerial biomass to estimate the below-ground biomass productivity in our study, the perennial forage seed crop-based sequences produced over 45% higher biomass below ground than the annual crop-based sequences over a 4-yr cycle. Comparing 2-yr annual cropping sequences of Bar-Can with perennial cropping sequences of timothy (Phleum pratense L.) and orchardgrass (Dactylis glomerata L.), Lasisi et al (2018) reported five to sixfold higher root biomass in perennials than that of annual cropping sequences. Compared with the results of their study, the root biomass of perennials is underestimated in our study.…”

Section: Biomass Productivity and Contribution To Soil C Stockmentioning

confidence: 97%

Value of integrating perennial forage seed crops in annual cropping sequences

et al. 2021

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Integrating Perennial Forage Seed Crops in RotationsCore Ideas  Integration of perennial forage seed crops in cropping sequences can be productive and profitable. Prevailing commodity prices have bearing on the relative profitability of the crops. Forage legumes can replace external nitrogen application for two succeeding crops. Complementary studies help to elucidate agro-ecosystem services of perennial seed crops.

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Below-ground plant biomass and nitrogen uptake of perennial forage grasses and annual crops fertilized with pig manures

Cited by 13 publications

References 35 publications

Phosphorus release from intact soil monoliths of manure‐amended fields under simulated snowmelt flooding

Phosphorus release from intact soil monoliths of manure‐amended fields under simulated snowmelt flooding

Sows-Gilts Stocking Rates and Their Environmental Impact in Rotationally Managed Bermudagrass Paddocks

Value of integrating perennial forage seed crops in annual cropping sequences

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