The Effects of Organic Wastes Applied to Alkaline Soils on Some Physical and Chemical Properties of the Soil

Tohumcu, Faruk; Aydın, Ali; Şimşek, Uğur

doi:10.1134/s1064229322601512

Cited by 3 publications

(2 citation statements)

References 74 publications

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“…Also, the C:N ratio of the growing medium has an important role in plant development. As a result of the microbial activity occurring during the degradation and decomposition phase of OP, a decrease in the amount of nitrogen available for the plant in the soil is observed [23]. Since the carbon source increases with the OP given to the environment, a large amount of nitrogen (N) immobilization may be in question, and this may have a negative effect on the nitrogen uptake required for the plants [24].…”

Section: Discussionmentioning

confidence: 99%

The effect of olive pomace and seaweed extract on the growth of pepper seedling

ALMA¹,

Söylemez²

2022

GSC Biol. and Pharm. Sci.

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In recent years, environmental pollution problems have increased due to organic wastes. The use of organic wastes as fertilizer plays an important role in reducing environmental pollution and improving the physical, chemical and biological properties of the soil. This study was carried out to determine the effect of unprocessed olive pomace (OP) which is a by-product of olive oil industry and seaweed (SW) on the growth of pepper seedlings. In the study, 4 different pomace ratios (5% OP + 95% peat, 10% OP + 90% peat, 15% OP + 85% peat and 20% OP + 80% peat V:V) and 4 different SW extract doses ( 0% 0.5%, 1% and 2% ) were used. In the study, parameters such as plant height, stem diameter, leaf area, plant fresh and dry weights, and chlorophyll index were investigated. According to the results of the study, OP applications significantly decreased the stem diameter, leaf area, leaf number, leaf dry weight, stem dry weight, root dry weight, chlorophyll content, stem-root ratio and total plant dry weight, while root length increased. On the other hand, SW applications had no an important effect on plant growth but partially imporoved in the zero OP application.

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Section: Discussionmentioning

confidence: 99%

The effect of olive pomace and seaweed extract on the growth of pepper seedling

ALMA¹,

Söylemez²

2022

GSC Biol. and Pharm. Sci.

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“…Organic fertilizers can supply nutrients to soil microorganisms. Organic acids generated by microorganisms during the decomposition of organic matter can regulate or buffer soil pH [30]. Montmorillonite fertilizers containing Fe and Al acid cations also reduce the soil pH.…”

Section: Interrelationships Between Soil Cec and Som Exchangeable Cat...mentioning

confidence: 99%

Effects of Balancing Exchangeable Cations Ca, Mg, and K on the Growth of Tomato Seedlings (Solanum lycopersicum L.) Based on Increased Soil Cation Exchange Capacity

Yang,

Zhou,

Hang

et al. 2024

Agronomy

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(1) Background: Previous research has demonstrated that the cation exchange capacity (CEC) of soil and the balance of exchangeable cations Ca, Mg, and K are key factors affecting plant growth and development. We hypothesized that balancing exchangeable cations based on increased CEC would improve plant growth and development. (2) Methods: This study conducted a two-phase experiment to evaluate methods for increasing soil CEC and the effects of increasing CEC and balancing Ca, Mg, and K on plant growth. Therefore, we first conducted a soil culture experiment using organic fertilizer, montmorillonite, and humic acid to investigate fertilizers that can effectively increase CEC in the short term. Then, a tomato seedling pot experiment was conducted using the control (CK) and OMHA fertilizer-treated soils collected from soil culture experiments. The CK and OMHA treatment soils were constructed with balanced exchangeable cations and an unbalanced control, respectively. (3) Results: The soil culture experiments revealed that the combination of organic fertilizer, montmorillonite, and humic acid (OMHA treatment) had the most significant effect on increasing CEC. The CEC of the OMHA treatment increased by 41.07%, reaching 27.10 cmol·kg−1. The tomato pot experiments demonstrated that balancing the exchangeable cations in OMHA soil improved the Mg and K nutrition of tomato seedlings and significantly increased SPAD, leaf nitrogen content, and dry weight, while balancing the exchangeable cations in CK soil improved only the K nutrition of tomato seedlings. (4) Conclusions: Overall, balancing exchangeable cations based on increasing CEC can improve soil nutrient availability and alleviate the competition effects of Ca, Mg, and K cations. Low CEC and imbalanced exchangeable cations can be detrimental to tomato seedling growth.

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A Systematic Review and Meta-Analysis of the Sustainable Impact of Sewage Sludge Application on Soil Organic Matter and Nutrient Content

Paganini,

Silva,

Ribeiro Roder

et al. 2024

Sustainability

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The increasing scarcity of natural resources makes the linear production model unsustainable, highlighting the need for more sustainable practices under the umbrella of circular economic principles. Sewage sludge emerges as a promising solution to provide soil organic matter (SOM) and nutrients. This meta-analysis evaluated the impacts of three levels of sludge application (low, medium, and high) on organic matter (OM), nitrogen (N), phosphorus (P), copper (Cu), and zinc (Zn) contents, considering different areas and experimental conditions worldwide. The analysis included 37 studies and 355 comparisons, after screening 7625 records, following the 2020 PRISMA protocol. The effects of sludge concentrations, continents, and types of experiment (field or greenhouse) were evaluated. Sewage sludge application significantly increased OM, N, Cu, and Zn levels, mainly at medium and high rates. The largest effects were observed in greenhouses, suggesting variation by location and environment. Moderators explained a part of the variation in the results, but the residual heterogeneity test revealed that there is still unexplained variability.

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The Effects of Organic Wastes Applied to Alkaline Soils on Some Physical and Chemical Properties of the Soil

Cited by 3 publications

References 74 publications

The effect of olive pomace and seaweed extract on the growth of pepper seedling

The effect of olive pomace and seaweed extract on the growth of pepper seedling

Effects of Balancing Exchangeable Cations Ca, Mg, and K on the Growth of Tomato Seedlings (Solanum lycopersicum L.) Based on Increased Soil Cation Exchange Capacity

A Systematic Review and Meta-Analysis of the Sustainable Impact of Sewage Sludge Application on Soil Organic Matter and Nutrient Content

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