Soil chemical attributes under combinations of organic fertilizing and water salinity

Freire, Márcio Henrique da Costa; Sousa, Geocleber Gomes de; Viana, Thales Vinícius de Araújo; Lessa, Carla Ingryd Nojosa; Costa, Francisco Hermeson Rodrigues

doi:10.1590/1983-40632023v5375156

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The soil available nutrients (AN, AP, and AK) increased significantly (P<0.05) under biochar, Trichoderma bio-organic manure, and bio-organic manure addition after 60 days. Similar results [45][46][47][48] were also found by previous study. On the one hand, Biochar acts as a good nutrient carrier and provider which can supply essential soil mineral nutrients (such as K + ,Ca 2+ , and Mg 2+ ) and aromatic group to promote soil stability [49].…”

Section: Discussionsupporting

confidence: 91%

Effects of Different Organic Materials on the Remediation and Improvement of Secondary Salinized Greenhouse Soil

Ma,

Bai,

et al. 2024

Preprint

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Soil secondary salinization has seriously affected the greenhouse vegetable production in China. To improve the secondary salinization greenhouse soil and enhance the soil physical-chemical properties in an eco-environmental way, different organic amendments (straw, straw biochar, Trichoderma bio-organic manure, commercial organic manure) were applied using pot experiment for 60 day to comprehensively screen the optimal remediation method. In this study, soil nutrient condition and salt movement were assessed, and predictive models using multi-linear regression (MLR) and Random Forest (RF) were developed to estimate soil salinization parameters. The findings indicated a significant decrease in soil salt content following the application of organic materials compared to the control treatment. Specifically, the addition of straw at a rate of 250g/kg resulted in a 59.38% reduction in soil salt levels after 60 days (P < 0.05). Furthermore, the main salt ions exhibited dynamic changes over the course of the experiment, with reductions observed in Na+, Ca2+, Cl-, and NO3- content under the 250 g/kg straw treatment by 83.63%, 74.67%, 63.26%, 59.07%, respectively, compared to CK (P < 0.05). In addition, the SO42- content under 125 g/kg commercial organic manure amendment reduced by 48.94%, respectively (P < 0.05). Contrary to expectations, the addition of organic materials significantly increased the levels of total nutrients (N/P/K) and available potassium (AK) and phosphorus (AP) in the soil. Specifically, the addition of straw at a rate of 250 g/kg resulted in increases of 18.02%-87.38% in total potassium (TK), 66.67%-200% in total phosphorus (TP), and 142.87%-367.8% in AK after a period of sixty days (P < 0.05). Ultimately, the treatment involving the addition of 250 g/kg of straw demonstrated the most pronounced impact on the physical and chemical properties of the soil. The random forest method shows promise in accurately predicting soil salt and soil sodium adsorption ratio (SAR)indicators, thereby providing a valuable tool for estimating soil properties.

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Section: Discussionsupporting

confidence: 91%

Effects of Different Organic Materials on the Remediation and Improvement of Secondary Salinized Greenhouse Soil

Ma,

Bai,

et al. 2024

Preprint

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Efecto del sistema de producción agrícola en las poblaciones microbianas del suelo

Gutiérrez-Soto,

López-Sandin,

Zavala García

et al. 2024

AGRICOLIS

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El objetivo de este trabajo fue la caracterización fisicoquímica y microbiológica del suelo a partir de muestras tomadas a 15 y 45 cm de profundidad antes del establecimiento de los diferentes tratamientos de laboreo y fertilización. En cuanto a los valores observados en los parámetros físico-químicos, no se observaron diferencias estadísticamente significativas (p > 0,05) entre las muestras de ambas profundidades. El análisis microbiológico se realizó con muestras de suelo tomadas a 15 cm de profundidad de tres sistemas de labranza, considerando el tratamiento control y el tratamiento con fertilización orgánica con gallinaza. Los recuentos de bacterias aerobias y actinomicetos no mostraron diferencias estadísticamente significativas (p > 0,05). Los recuentos de bacterias anaerobias, coliformes y hongos fueron estadísticamente diferentes (p > 0,05) entre los tratamientos debido a la presencia de abono orgánico. Sin embargo, no se observaron diferencias estadísticamente significativas (p > 0,05) entre los tres sistemas de laboreo. En un segundo ciclo de cultivo, se evaluó el efecto de diferentes concentraciones de materia orgánica, donde T1(N: 60, P: 65,5, K: 74,4) mostró la mayor UFC g-1 (Log) de bacterias aerobias y anaerobias, actinomicetos y hongos, mientras que T3 tuvo la mayor UFC de coliformes. Estos resultados son importantes para comprender mejor la dinámica del suelo e informar sobre las prácticas agrícolas y de gestión del suelo. Además, ponen de relieve la importancia del uso adecuado de fertilizantes orgánicos y la necesidad de seguir investigando para determinar cómo afectan a la salud y la calidad del suelo a largo plazo.

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Soil chemical attributes under combinations of organic fertilizing and water salinity

Cited by 2 publications

References 17 publications

Effects of Different Organic Materials on the Remediation and Improvement of Secondary Salinized Greenhouse Soil

Effects of Different Organic Materials on the Remediation and Improvement of Secondary Salinized Greenhouse Soil

Efecto del sistema de producción agrícola en las poblaciones microbianas del suelo

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