Legacy Phosphorus in Calcareous Soils: Effects of Long-Term Poultry Litter Application

Waldrip, Heidi M.; Pagliari, Paulo; He, Zhongqi; Harmel, R. Daren; Cole, N. A.; Zhang, Mingchu

doi:10.2136/sssaj2015.03.0090

Cited by 43 publications

(43 citation statements)

References 68 publications

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“…For example, soil conservation measures such as no-till and cover crops that aimed at reducing P loss via erosion would be beneficial for building up of legacy P pools (Sims and Kleinman, 2005). Legacy organic P would be increased with relative proportion of applied manure to fertilizer (Waldrip et al, 2015). Due to relative low availability of manure P for crop uptake, legacy P reserves in soils have also developed in regions where specialization and intensification of livestock production result in localized manure nutrient imbalances.…”

Section: Legacy Nutrient Dynamics In Soilsmentioning

confidence: 99%

“…Increasing manure or organic waste application is also in favor of building up legacy organic P in cropland soils. For example, a long-term (>10 years) poultry litter application experiments (cultivated and grazed-ungrazed pasture) on a calcareous Texas Blackland Vertisol indicated that an average of 68% of total P was extractable with HCl, with organic P comprised the majority (95%) of HCl-extracted total P (Waldrip et al, 2015). The legacy nutrient associated with urban areas is mostly associated with the historic fertilization practices and sewage treatment systems, particular septic tanks.…”

Section: Legacy Nutrient Dynamics In Soilsmentioning

confidence: 99%

See 1 more Smart Citation

Legacy Nutrient Dynamics at the Watershed Scale: Principles, Modeling, and Implications

Chen

Shen

et al. 2018

Advances in Agronomy

108

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Section: Legacy Nutrient Dynamics In Soilsmentioning

confidence: 99%

Section: Legacy Nutrient Dynamics In Soilsmentioning

confidence: 99%

Legacy Nutrient Dynamics at the Watershed Scale: Principles, Modeling, and Implications

Chen

Shen

et al. 2018

Advances in Agronomy

108

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“…With increasing costs of inorganic fertilizers, as well as a push for organic and sustainable agricultural systems, PL is starting to be more frequently transported further from CAFO for use as fertilizer for crops, forage, and pastures [4] [5] [6]. Research [7] [8] [9] showed that inorganic N and P can run off from both cropland and pasture after PL application. While numerous studies have focused on runoff N and P from manure, less attention has been paid to how manure impacts WEOC and WEON in soil which are two key WEOM components [10] [11] [12] [13] [14].…”

Section: Introductionmentioning

confidence: 99%

“…This composite field sampling enables a substantial saving in total cost in many soil investigations, and could be applied under certain conditions [29]. The strategy has been used in estimations of PL amendment effects on average changes in the soil P chemical distribution, without increasing the time and cost of analyses, of the soil samples used for this study [9].…”

Section: Introductionmentioning

confidence: 99%

Impact of Management Practices on Water Extractable Organic Carbon and Nitrogen from 12-Year Poultry Litter Amended Soils

He¹,

Zhang²,

Zhao³

et al. 2017

OJSS

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Water extractable organic carbon (WEOC) and nitrogen (WEON) are two key parameters of soil water extractable organic matter (WEOM). Proper management of manure application rate in combination with tillage and cropping management could maintain appropriate WEOC and WEON concentrations in soils while decreasing the risk of their runoff from cropland and pastures. The objective of this research was to determine the effect of poultry litter (PL) application on WEOC and WEON in soils under different crops, tillage regimes, and grazing strategies. From 2001 to 2012, PL was applied at multiple rates to cultivated fields in a corn-oat/wheat-hay rotation or to pastures grazed by cattle or ungrazed. Soil samples (0 -15 cm) were analyzed for KCl-extractable mineral N, and WEOC, and WEON contents. In addition, Ultraviolet-visible (UV-vis) and fluorescence spectroscopies were used to characterize WEOC stability. Organic N levels were higher at the high PL application rates. The soil C:N ratio narrowed as the PL application rate increased. However, the soil from pastures which received PL tended to have a wider range of C:N ratios than soil from the cultivated fields, despite identical PL application rates. The spectral analyses indicated that WEOC properties were responsive to management and PL application rate; therefore, this parameter may be used as a guide to provide best management strategy for manure application.

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“…This industry interfaces with beef cattle production because poultry litter is commonly applied to pastures as a nutrient source (Waldrip et al 2015). In some cases, over-fertilization has led to increased nutrient runoff from fields, which is exacerbated by intensification of some precipitation events.…”

Section: • Reduced Vegetative Cover (D)mentioning

confidence: 99%

Vulnerability of Southern Plains agriculture to climate change

et al. 2017

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Projections of greater interannual and intrannual climate variability, including increasing temperatures, longer and more intense drought periods, and more extreme precipitation events, present growing challenges for agricultural production in the Southern Plains of the USA. We assess agricultural vulnerabilities within this region to support identification and development of adaptation strategies at regional to local scales, where many management decisions are made. Exposure to the synergistic effects of warming, such as fewer and more intense precipitation events and greater overall weather variability, will uniquely affect rain-fed and irrigated cropping, high-value specialty crops, extensive and intensive livestock production, and forestry. Although the sensitivities of various agricultural sectors to climatic stressors can be difficult to identify at regional scales, we summarize that crops irrigated from the Ogallala aquifer possess a high sensitivity; rangeland beef cattle production a low sensitivity; and rain-fed crops, forestry, and specialty crops intermediate sensitivities. Numerous adaptation strategies have been identified, including drought contingency planning, increased soil health, improved forecasts and associated decision support tools, and implementation of policies and financial instruments for risk management. However, the extent to which these strategies are adopted is variable and influenced by both biophysical and socioeconomic considerations. Inadequate local-and regional-scale climate risk and resilience information suggests that climate vulnerability research and climate adaptation approaches need to include bottom-up approaches such as learning networks and peer-to-peer communication.

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Legacy Phosphorus in Calcareous Soils: Effects of Long-Term Poultry Litter Application

Cited by 43 publications

References 68 publications

Legacy Nutrient Dynamics at the Watershed Scale: Principles, Modeling, and Implications

Legacy Nutrient Dynamics at the Watershed Scale: Principles, Modeling, and Implications

Impact of Management Practices on Water Extractable Organic Carbon and Nitrogen from 12-Year Poultry Litter Amended Soils

Vulnerability of Southern Plains agriculture to climate change

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