Soil health conditions under cotton production in North Carolina

Franzluebbers, Alan J.

doi:10.1002/agj2.20573

Cited by 9 publications

(16 citation statements)

References 54 publications

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“…Most cotton in North Carolina is grown in the Coastal Plain region with predominance of sandy soil, and these data reflected this generalization. As described elsewhere, routine soil testing values revealed more than adequate inorganic soil fertility conditions (Franzluebbers, 2021a). Among the 120 fields, total content of SOC, TSN, and STBA in the surface 30 cm was 39.1 ± 18.4 Mg C ha −1 , 2.82 ± 0.92 Mg N ha −1 , and 279 ± 88 kg CO 2 -C ha −1 3 d −1 , respectively.…”

Section: Resultsmentioning

confidence: 62%

“…Carolina is grown in the Coastal Plain region with predominance of sandy soil, and these data reflected this generalization. As described elsewhere, routine soil testing values revealed more than adequate inorganic soil fertility conditions (Franzluebbers, 2021a).…”

Section: Resultsmentioning

confidence: 71%

“…Due to the number of farmer participants, the survey process and associated soil sampling took 10 weeks to complete, starting 15 June 2019 and ending 14 August 2019. The management survey was outlined elsewhere (Franzluebbers, 2021a), and the key question of interest here was tillage management. Tillage used for the current crop was queried, as well as tillage on the field during the past decade.…”

Section: Survey Approachmentioning

confidence: 99%

“…Alkali traps were titrated to a phenolphthalein endpoint with 1 mol L -1 HCl using vigorous stirring in the presence of BaCl 2 , which formed BaCO 3 precipitate. Surface residue C, N, and mass, BD at 0-to-10-cm depth, and individual depth concentrations of SOC, TSN, and STBA were reported elsewhere (Franzluebbers, 2021a). The focus in the current study was on the integrated assessment of root-zone enrichment of SOC, TSN, and STBA using a nonlinear depth distribution method, as described in Franzluebbers (2021b).…”

Section: Soil Sampling and Analysesmentioning

confidence: 99%

“…Large variation in baseline content of SOC occurred among fields, and this variation appeared to be equally distributed among tillage systems (Figure 3). Variation in baseline content of SOC was largely a result of geographical location and soil type, in which soils in the Flatwoods region sometimes had high SOC concentrations throughout the soil profile (Franzluebbers, 2021a). The Flatwoods region had more aquic and umbric soil types caused by historical inundation and native vegetation tolerant of wet conditions that limited aerobic decomposition and led to high soil organic matter levels.…”

Section: Tillage Managementmentioning

confidence: 99%

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Root‐zone enrichment of carbon, nitrogen, and soil‐test biological activity under cotton systems in North Carolina

Franzluebbers

2021

Soil Science Soc of Amer J

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Soils of the southeastern US are generally low in organic matter. Root-zone enrichment of organic C and N may be possible with conservation agricultural management, but little is known of how this might be distributed across private farms. A stratified random survey of 120 cotton (Gossypium hirsutum L.) fields from throughout North Carolina characterized root-zone contents of soil organic C (SOC), total soil N (TSN), and soil-test biological activity (STBA). Soils were mostly udults and aquults, but included some udepts, aquepts, aqualfs, and psamments. Depth distribution of soil properties at 0-10, 10-30, and 30-60 cm was fitted to a non-linear regression model for each soil profile to calculate root-zone enrichment over that of a baseline content estimated from concentration at 30-

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Section: Resultsmentioning

confidence: 62%

Section: Resultsmentioning

confidence: 71%

Section: Survey Approachmentioning

confidence: 99%

Section: Soil Sampling and Analysesmentioning

confidence: 99%

Section: Tillage Managementmentioning

confidence: 99%

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Root‐zone enrichment of carbon, nitrogen, and soil‐test biological activity under cotton systems in North Carolina

Franzluebbers

2021

Soil Science Soc of Amer J

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Soil depth distribution of particulate organic carbon and nitrogen in the southeastern United States

Franzluebbers

2024

Agricultural & Env Letters

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Particulate organic matter may be an important component feeding soil microbial activity. This study described population‐level statistics of particulate organic carbon (C) and nitrogen (N) in predominately Ultisols across 181 farms throughout North Carolina, Virginia, and Georgia. Soil profiles were sampled under conventional‐till cropland (n = 186), no‐till cropland (n = 127), grassland (n = 322), and woodland (n = 171). Particulate organic C (g C kg−1 soil) varied from 2.0 to 18.0 (5% to 95% distribution) at 0‐ to 10‐cm depth, 0.4 to 3.9 at 10‐ to 30‐cm depth, and 0.1 to 1.9 at 30‐ to 60‐cm depth. As a proportion of total N, particulate organic N was 0.26 ± 0.10, 0.12 ± 0.09, and 0.08 ± 0.08 kg kg−1 at 0‐ to 10‐, 10‐ to 30‐, and 30‐ to 60‐cm depths, respectively. Particulate organic C was most dramatically affected at 0‐ to 10‐cm depth, following the order: conventional‐till cropland < no‐till cropland < grassland < woodland. Particulate organic N followed a similar order, except there was no difference between grassland and woodland. Particulate organic matter brings vitality to soil along a trajectory toward greater organic matter.

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Integrating cover crops and organic amendments to mitigate the limitations of tillage on soil health and cotton productivity

Ankomah,

Amissah,

Hollifield

et al. 2024

Agronomy Journal

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Various tillage systems have limitations on soil health, such as the degradation of soil structure and organic matter under conventional tillage (CT) systems, as well as short‐term soil compaction in conservation tillage systems. A 3‐year field experiment was established to evaluate the integration of cover crop (CC) and organic amendments (OAs) into CT and strip tillage (ST) systems, and their impact on soil properties and cotton (Gossypium hirsutum L.) productivity. The CC was cereal rye (Secale cereale), and the combined application of animal manure and biochar constituted the OA. In the third year, differences in soil compaction between the CT and ST systems were observed when the measurements were made after tillage. Moreover, integrating CC and OA under the CT and ST systems increased the soil depth to compaction zones. Soil compaction was observed at 27.5‐cm depth under CT, at 30‐cm depth under CT integrated with CC and OA, at 10‐cm depth under ST, and at 15‐cm depth under ST integrated with CC and OA, using 2 MPa as the threshold. In general, the integration of CC and OA tended to increase soil respiration, organic matter, and available nutrients, but the effects were not consistent across years and soil depth. Despite differences in the various soil health properties, the management systems had minimum impact on cotton productivity and fiber quality, indicating the ST was effective in preparing the seedbed. Moreover, the differences in soil properties were not at yield‐limiting levels within 3 years of the study.

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Soil health conditions under cotton production in North Carolina

Cited by 9 publications

References 54 publications

Root‐zone enrichment of carbon, nitrogen, and soil‐test biological activity under cotton systems in North Carolina

Root‐zone enrichment of carbon, nitrogen, and soil‐test biological activity under cotton systems in North Carolina

Soil depth distribution of particulate organic carbon and nitrogen in the southeastern United States

Integrating cover crops and organic amendments to mitigate the limitations of tillage on soil health and cotton productivity

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