Crop Response to Lime in the Southern United States

Adams, Fred

doi:10.2134/agronmonogr12.2ed.c5

Cited by 107 publications

(39 citation statements)

References 108 publications

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“…As the pH of the soil decreases, the total acidity and the concentration of exchangeable Al and Mn increase, sometimes to phytotoxic levels. When soil pH decreases below a value of about 5.5 to 6.0, there is typically an increase in exchangeable Al and Mn (Fox, 1979; Adams, 1984; Foy, 1984; Ritchie, 1989; Lofton et al, 2010). As the soils weather, soluble silicates, basic cations, and acidic cations are released from the soil parent material.…”

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confidence: 99%

“…Research in cotton by Howard and Adams (1965) determined that the elongation of primary roots was inhibited by H + toxicity when the pH is <4.25. Above this pH, exchangeable Al and Mn are responsible for yield reductions (Fox, 1979Foy, 1984; Adams, 1984; Ritchie, 1989). This is coupled with a concomitant decrease in the availability of Ca, Mg, and other essential nutrients, which can lead to reductions in plant growth (Howard, 1970; Adams, 1984; Foy, 1984).…”

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confidence: 99%

“…Above this pH, exchangeable Al and Mn are responsible for yield reductions (Fox, 1979Foy, 1984; Adams, 1984; Ritchie, 1989). This is coupled with a concomitant decrease in the availability of Ca, Mg, and other essential nutrients, which can lead to reductions in plant growth (Howard, 1970; Adams, 1984; Foy, 1984). The more total Al and Mn present in the system, the greater the potential for Al and Mn to reach phytotoxic levels (McLean and Brown, 1984).…”

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confidence: 99%

“…Adams and Moore (1983) observed toxic symptoms on cotton roots at 2.2 to 77% Al saturation within the same soil type in different horizons and the absence of toxic symptoms up to 66% Al saturation. However, it is generally agreed that problems from Mn and Al can occur with pH <5.5, but this is not well defined and varies (Adams and Wear, 1957; Fox, 1979; Adams and Moore, 1983; Adams, 1984; Foy, 1984; Ritchie, 1989). Regardless of pH, applications of nutrient solution containing 5 to 10 mg kg −1 Mn appear to be toxic to many cotton genotypes (Kennedy and Jones, 1991).…”

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confidence: 99%

“…Regardless of pH, applications of nutrient solution containing 5 to 10 mg kg −1 Mn appear to be toxic to many cotton genotypes (Kennedy and Jones, 1991). Adams (1984) reported that soil concentrations of easily reducible Mn around 50 to 100 mg kg −1 appear to be toxic. Complexes formed with dissolved organic C (DOC) also make it difficult to ascertain a specific level of acidic cations that will cause yield reductions (Ritchie, 1989).…”

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Nitrogen Rate, Cover Crop, and Tillage Practice Alter Soil Chemical Properties

et al. 2015

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Long-term management practices can infl uence many physical and chemical soil properties. Th is study investigated the infl uence of 14 yr of continuous cotton (Gossypium hirsutum L.) management systems on soil pH, soil organic C (SOC), and exchangeable cations. Management practices consisted of varying N rate, tillage (no-tillage [NT] or disk tillage [DT]), and cover crop on a Lexington silt loam soil (Ultic Hapludalf) in the absence of lime additions. Lower soil pH was present in NT, hairy vetch (Vicia villosa L.) cover treatments and with increasing N rate but similar between 0-to 7.5-and 0-to 15-cm sample depths. Soil pH decreased between 0.23 to 0.37 units for each 34 kg N ha -1 added and 0.46 units with hairy vetch cover. Hairy vetch cover and 101 kg N ha -1 resulted in pH <5 and increased SOC and exchangeable Mn. Exchangeable Al values were >0.30 cmol c kg -1 with 101 kg N ha -1 and hairy vetch cover and with 101 kg N ha -1 under NT, but they were £0.13 cmol c kg -1 for all other treatments. Exchangeable Al increased at pH <5 for NT with hairy vetch cover, while changes were insignifi cant for all other treatments. Th e hairy vetch cover contributed acidity equivalent to 42 to 68 kg N ha -1 as NH 4 NO 3 . Although stratifi cation of SOC occurred under NT, no other measured properties varied with depth in NT treatments, and diff erent recommendations are not necessary for NT crop production. Appropriate N credits from hairy vetch cover will reduce excessive acidity, production costs, and potential environmental concerns.

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confidence: 99%

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confidence: 99%

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confidence: 99%

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Nitrogen Rate, Cover Crop, and Tillage Practice Alter Soil Chemical Properties

et al. 2015

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Fertilization and Nutrient Management

Barker

Culman

2020

Forages

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Thoughts on acidification of soils by nitrogen and sulfur fertilizers

Kissel¹,

Bock²,

Ogles³

2020

Agrosystems Geosci & Env

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Some crops, like blueberries, require a pH of 4 to 5. Irrigation of acid‐loving crops with alkaline water can raise pH and cause micronutrient deficiencies. Diseases like citrus greening (Huanglongbing) are more severe at higher soil pH values. Application of acidifying fertilizers to lower soil pH may therefore benefit crop growth in such instances and release calcium from calcareous soils to remove sodium. Therefore, a good understanding of the processes involved and the amount of acidification from various fertilizer materials is needed. We show with an anion–cation balance of recent plant uptake data that the alkalinity released from plant uptake of nutrients alone gave a value of 2 kg CaCO3 equivalents of alkalinity per kilogram of N uptake, in close agreement with Association of Official Analytical Chemists values of 1.8. We also provide equations and calculations and a summary table that allows a user to compare the acidifying capacity of commonly available N and S fertilizers.

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Crop Response to Lime in the Southern United States

Cited by 107 publications

References 108 publications

Nitrogen Rate, Cover Crop, and Tillage Practice Alter Soil Chemical Properties

Nitrogen Rate, Cover Crop, and Tillage Practice Alter Soil Chemical Properties

Fertilization and Nutrient Management

Thoughts on acidification of soils by nitrogen and sulfur fertilizers

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