Potassium Fertilizer Value of Raw and Hydrothermally Treated Igneous Rocks

Herve, Aaron; Khiari, Lotfi; Raji, Otmane; Elghali, Abdellatif; Lajili, Abdelkarim; Ouabid, Muhammad; Jemo, Martin; Bodinier, Jean-Louis

doi:10.1007/s42729-022-01101-6

Cited by 4 publications

(3 citation statements)

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“…In the LV soil, the bean yield ranged from 1.9 to 3.9 Mg ha -1 with emphasis on the 60 KMC treatment, which obtained the highest yields, evidencing a residual effect of the application of KMC from soybean. This obtained result aligns with the findings of Mbissik et al (2023), who evaluated 16 types of rock powders as potassium sources with and without thermal treatment (hydrothermal). They observed that over the long term, untreated rocks exhibited better performance in ryegrass productivity compared to hydrothermally treated ones, attributed to the long-term availability of potassium for plants.…”

Section: Productivitysupporting

confidence: 91%

“…A second-degree polynomial regression was used to evaluate the dose-response relationship between different doses of the KMC agromineral and the analyzed variables. This type of quadratic curve is commonly used in soil fertility because it's easy to derive fertilizer rates that yield maximum or optimal outcomes (Mbissik et al, 2023). These forms are also frequently employed for evaluating designed experiments (NIST, 2012).…”

Section: Statistics and Data Analysismentioning

confidence: 99%

“…This characteristic allows residual portions of the rock powder to transform into clay over time, establishing a significant "nutrient bank." This nutrient reservoir ensures a consistent release over extended periods, resulting in enduring effects on soil fertility and optimization of costs linked to fertilizer application (Mbissik et al, 2023).…”

Section: Foliar Potassium Contentmentioning

confidence: 99%

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Evaluation of Agronomic Efficiency with Regional Source of Natural Potassium in the Brazilian Midwest

Oliveira,

Leandro,

Castro

et al. 2023

JSD

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Brazil plays an important role in global food production, but faces challenges due to its dependence on imported fertilizers. To reduce this vulnerability of the agricultural sector, the use of natural sources such as agrominerals, also known as rock dust, is gaining ground. The objective of this study was to characterize and evaluate a new source of natural potassium, extracted from a deposit located in the Brazilian Midwest, through geological characterization and agronomic evaluation through yield tests, soil and foliar potassium content. The tests were conducted in a greenhouse with seven treatments, two soil types and four replications, with millet, soybeans and beans in succession to evaluate the residual effect of the product. The agromineral was classified as a nepheline syenite saprolite with an average K2O content of 11.6%. The effects of the agromineral were promising, especially in the medium term. In the case of beans, at the standard dose of 60 K2O, yields in clay soils were 3.6 Mg ha-1 higher than in the 60 KCl treatment, which obtained only 2.3 Mg ha-1, probably due to absorption or leaching losses, since the effect evaluated was residual in nature. For all the crops evaluated, the agromineral showed an increase in potassium levels in both the soil and the leaves compared to the control group, indicating that it is a potential alternative to gradually reduce the use of traditional chemical fertilizers. Field trials are recommended to validate these benefits, taking into account more realistic environmental variations.

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Section: Productivitysupporting

confidence: 91%

Section: Statistics and Data Analysismentioning

confidence: 99%

Section: Foliar Potassium Contentmentioning

confidence: 99%

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