The long-term role of organic amendments in addressing soil constraints to production

Zwieten, Lukas Van

doi:10.1007/s10705-018-9934-6

Cited by 33 publications

(13 citation statements)

References 14 publications

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“…Lime, for instance, is underapplied among Western Kenyan maize farmers suffering under soil acidity (Kiplagat et al, 2014, Opala et al, 2018), despite the commodity being mined by Homa Lime Co. LTD in the Nyanza province of Western Kenya (Homa lime Co. LTD, 2018, Yager, 2011). A similar argument can be made for the benefits of applying organic matter to build soil organic C. Touted as improving the yield response to mineral fertilizer (Marenya and Barrett, 2009, Güereña et al, 2016, Van Zwieten, 2018), the addition of organic matter is less cost-restrictive to farmers as it is labor-intensive, because the main expense in labor; organic C as residual waste biomass is relatively cheap to apply. Okalebo et al (2006) found a 73% increase in maize yield after incorporation of lablab bean, compared to 116% increase with mineral fertilizer.…”

Section: Discussionmentioning

confidence: 92%

Biological and thermochemical conversion of human solid waste to soil amendments

Krounbi

Enders

et al. 2019

Waste Management

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Highlights Monetary value based on agronomic components was highest with HSW pyrolyzed at 600 °C. HSW pyrolyzed at 700 °C was of greatest monetary value compared to organic amendments. High mass recovery with torrefaction maximizes monetary value per unit weight feedstock. Compost had the lowest value under any scenario.

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Section: Discussionmentioning

confidence: 92%

Biological and thermochemical conversion of human solid waste to soil amendments

Krounbi

Enders

et al. 2019

Waste Management

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“…Cotton plants absorbed Mn, Fe, Ca, and Na from soil during the growing season. When the stalk residue was incorporated into the soil, these minerals were released back into the soil (Han et al, 2010; van Zwieten, 2018). Fertilization significantly reduced soil pH but increased available N in rhizospheric soil and in bulk soil.…”

Section: Discussionmentioning

confidence: 99%

Influence of Stalk Residue Retention and Fertilization on the Rhizospheric Effect with Drip‐Irrigated Cotton

Zhang

et al. 2019

Agronomy Journal

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Core Ideas Stalk residue retention and fertilizer increased organic carbon, total nitrogen, and microbial biomass carbon. Nitrogen‐phosphorus‐potassium plus poultry manure had the highest NO3–‐N and available nitrogen contents. Stalk residue retention plus fertilization had positive rhizospheric effect on soil organic carbon and NO3–‐N. Stalk residue retention plus fertilization had negative rhizospheric effect on total nitrogen and NH4+‐N. Stalk residue retention plus fertilization had no net rhizospheric effect on pH and microbial biomass carbon. ABSTRACT By using less chemical fertilizer to produce cotton (Gossypium hirsutum L.), farmers could reduce input costs, increase efficiency, and protect the environment. The objective of this study was to determine the effects of stalk residue management and fertilizer application on the rhizospheric and bulk soil properties. The split‐plot design included two main plot treatments (stalk residue removal and stalk residue retention) and four subplot fertilizer treatments (no fertilizer; N, P, and K fertilizer; poultry manure; and NPK plus poultry manure). Results showed that stalk residue retention increased soil pH, whereas fertilization reduced it. Stalk residue retention and fertilizer application both increased organic C, total N, and microbial biomass C. The NPK plus poultry manure treatment had the highest nitrate (NO3–‐N) and available N contents. Stalk residue retention had negative rhizospheric effect on soil pH, total N, and ammonium (NH4+‐N) but positive rhizospheric effect on soil organic C, microbial biomass C, and NO3–‐N. The NPK plus poultry manure treatment had positive rhizospheric effect on soil pH, organic C, and NO3–‐N but negative rhizospheric effect on total soil N, microbial biomass C and NH4+‐N. Overall, stalk residue retention plus fertilization had positive rhizospheric effect on soil organic C and NO3–‐N, negative rhizospheric effect on total N and NH4+‐N, and no net rhizospheric effect on soil pH and microbial biomass C. Stalk residue retention improved soil quality and increased soil organic C and available N. Stalk residue retention plus NPK fertilizer and poultry manure can significantly increase soil organic C and active C components, thus ensuring high productivity.

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“…There has been renewed interest in the use of organic fertilisers for supplying plant nutrients [12,13], and as a feedback mechanism for improving soil health [14]. The term "organic fertiliser" covers a wide range of substrates including manures, composts, and plant stubble and root residues [13,15,16], and these substrates vary considerably in nutrient content in both form and concentration [17]. However, there are issues relating to the slow rate of N release from organic substrates.…”

Section: Introductionmentioning

confidence: 99%

“…However, in contrast to leachate N, the soil mineral N levels for the combined (organic + urea N sources) and urea-only treatments were similar, indicating that little N mineralisation from the organic substrate had occurred. Although organic fertilisers are capable of supplying N for plant use, factors such as the organic substrate and soil chemical and physical characteristics, as well as microbial diversity and functionality, play key roles in the mineralisation and nutrient release rates from these organic materials [13,15,16,19].…”

Section: Introductionmentioning

confidence: 99%

Combination of Inorganic Nitrogen and Organic Soil Amendment Improves Nitrogen Use Efficiency While Reducing Nitrogen Runoff

et al. 2022

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Improved nitrogen fertiliser management and increased nitrogen use efficiency (NUE) can be achieved by synchronising nitrogen (N) availability with plant uptake requirements. Organic materials in conjunction with inorganic fertilisers provide a strategy for supplying plant-available N over the growing season and reducing N loss. This study investigated whether a combined application of inorganic N with an organic soil amendment could improve nitrogen use efficiency by reducing N loss in runoff. Nitrogen runoff from a ryegrass (Lolium multiflorum) cover was investigated using a rainfall simulator. Nitrogen was applied at low, medium and high (50, 75 and 100 kg/ha) rates as either (NH4)2SO4 or in combination with a poultry manure-based organic material. We showed that the NUE in the combination (58–75%) was two-fold greater than in (NH4)2SO4 (24–42%). Furthermore, this combination also resulted in a two-fold lower N runoff compared with the inorganic fertiliser alone. This effect was attributed to the slower rate of N release from the organic amendment relative to the inorganic fertiliser. Here, we demonstrated that the combined use of inorganic and organic N substrates can reduce nutrient losses in surface runoff due to a better synchronisation of N availability with plant uptake requirements.

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The long-term role of organic amendments in addressing soil constraints to production

Cited by 33 publications

References 14 publications

Biological and thermochemical conversion of human solid waste to soil amendments

Biological and thermochemical conversion of human solid waste to soil amendments

Influence of Stalk Residue Retention and Fertilization on the Rhizospheric Effect with Drip‐Irrigated Cotton

Combination of Inorganic Nitrogen and Organic Soil Amendment Improves Nitrogen Use Efficiency While Reducing Nitrogen Runoff

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