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Bakken, Anne Kjersti; Gautneb, Håvard; Sveistrup, Tore E.; Myhr, K.

doi:10.1023/a:1009709914578

Cited by 67 publications

(9 citation statements)

References 10 publications

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“…For instance, in the 6-mo pot trials (K application rate: 25 g box -1 ), Bakken et al (1997) found that the Italian ryegrass (Lolium multiflorum) supplied with nepheline-bearing mineral (1% feldspar, 18% nepheline, and 80% biotite; 3.2% K) could assimilate a similar amount of K compared with that supplied with KCl, but the ryegrass treated with K-feldspar-bearing minerals (77-80% K-feldspar; 6.3-6.4% K) achieved a lower K uptake which was similar to the control. Same findings were also attained on grass plants with a wide range of soil types by Bakken et al (2000) in field trials when the K silicate minerals were applied at a rate of 50 kg ha -1 . Recently, increase in rapeseed (Brassica napus L.) yield (Zhang et al, 2013) and rice yield (Wang et al, 2014;Zhang et al, 2016) have been reported with the application of K silicate mineral product of Ziguang (ZG) in pot trials.…”

Section: Core Ideassupporting

confidence: 58%

“…The reasons why the crop grain yield of KSMP treatments could be higher than that of KCl treatment might be: first, the K availability of ZG in soil conditions was similar to KCl; and second, the Ca, Mg, and Si involved in the KSMPs could enhance the crop growth and grain yield development. However, Bakken et al (2000) found that the K involved in nepheline released extremely slowly and the K involved in feldspar seemed to be nearly unavailable for the grass plants. The reason why our results differed from those previous pot experiments (Bakken et al, 1997;Gautneb and Bakken, 1995;Mohammed et al, 2014) and field experiments (Sanz Scovino and Rowell, 1988) is that, on the one hand, in our study the KSMPs were applied combined with KCl, on the other hand, the producing process of KSMPs may have activated the K involved in the rocks.…”

Section: Discussion Effects Of Ksmps On Wheat and Ricementioning

confidence: 99%

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Can Potassium Silicate Mineral Products Replace Conventional Potassium Fertilizers in Rice–Wheat Rotation?

Zhao

Gao

et al. 2019

Agronomy Journal

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Potassium (K) silicate minerals are important insoluble K resources and exploring their potential as alternatives to conventional K fertilizers would be helpful to deal with the widespread K deficiency in the world. Thus on-farm experiments with potassium silicate mineral products (KSMPs), e.g., Fubang (FB), Zhongke (ZK), Ziguang (ZG)-manufactured from natural K-bearing rocks-were conducted to investigate their effects on crop yield, soil K fertility and pH in rice-wheat (Oryza sativa L.-Triticum aestivum L.) rotation at Guangde County and Jiangdu County, China. The experiments lasted 2 yr at two sites and six treatments about K fertilizers were tested: no K fertilization (CK); 100% K chloride (KCl); 100% ZG; 50% KCl +50% ZG; 50% KCl +50% FB; 50% KCl +50% ZK. Results showed that both wheat and rice grain yields for CK were markedly decreased compared with that for the other treatments, regardless of K fertilizer types. Similar to KCl, the KSMPs could maintain crop yields and soil potassium fertility. Besides, the KSMPs significantly improved soil pH by average 0.47 and 0.38 at Guangde and Jiangdu, respectively, compared with that for KCl, after its application for 2 yr. However, the apparent K balances for most treatments at two sites were negative. In terms of economic aspect, the value cost ratio averaged by sites of ZG was 2.59 which was significantly higher than that for FB and ZK. In conclusion, the KSMPs can sustain crop yields and soil K fertility and thus can partly substitute conventional K fertilizers in ricewheat rotation on the Aquic Haplanthrepts soils.

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Section: Core Ideassupporting

confidence: 58%

Section: Discussion Effects Of Ksmps On Wheat and Ricementioning

confidence: 99%

Can Potassium Silicate Mineral Products Replace Conventional Potassium Fertilizers in Rice–Wheat Rotation?

Zhao

Gao

et al. 2019

Agronomy Journal

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“…In addition, because they are rocks with a gradual release of nutrients, it is expected that with a longer incubation time than the one used in this study, greater K-release to soil would occur. Bakken, Gautneb, Sveistrup, and Myhr (2000), studying the use of biotite and carbonatite as sources of K over three years in pasture cultivation, observed that in the last year of the study, without the addition of any K fertilizer, the effects of carbonatite and biotite were comparable to the KCl. These authors concluded that increasing the evaluation period may result in gains comparable to those obtained with conventional sources of nutrients.…”

Section: Resultsmentioning

confidence: 99%

Kamafugite From the Alto Paranaíba Province as a Multi-nutrient Fertilizer

Ferreira¹,

Gualberto²,

Faroutine³

et al. 2020

JAS

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The study evaluated the potential agricultural use of kamafugite as a multi-nutrient fertilizer in the cultivation of Urochloa brizantha. Two experiments were carried out under greenhouse conditions, one using a Ferralsol and the other an Arenosol. The experimental design was a randomized block with four replicates, in a factorial scheme 4 × 2 + 2, comprising four doses of kamafugite (1667, 3334, 6668, and 13336 mg dm-3), two product forms (filler and powder), and two additional treatments, TSF + KCl and a control treatment without K2O and P2O5 application. The sources were incubated for 60 days on two soil types and, after the incubation period, Urochloa brizantha plants were grown and two consecutive cuts were performed. The kamafugite was efficient in increasing plant dry mass and the levels of P, K, Ca, and Mg accumulated in plants, mainly in the 2nd Urochloa brizantha crop. The granulometry filler was more efficient in the sandy soil and the form powder in the clayey soil. Kamafugite can be used as an alternative source of nutrients for the Urochloa brizantha crop, being a low-cost and a potential source to improve tropical soil fertility over time.

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“…On the other hand, other components in the tailings may become effective components in other industries and could be utilized. Nowadays, tailings reuse has made great progress in many aspects, such as heavy separation of useful materials, production of building materials, production of fertilizers, and filling of mine goaf [113][114][115]. The efficient utilization of tailings ponds in the later stage needs further research and new technology support, but the cognition of tailings from "waste" to "resource" also needs to be changed.…”

Section: Lessons Learned and Perceptions About Safety Management Of Tailings Pondsmentioning

confidence: 99%

Watch Out for the Tailings Pond, a Sharp Edge Hanging over Our Heads: Lessons Learned and Perceptions from the Brumadinho Tailings Dam Failure Disaster

Cheng

Cui

et al. 2021

Remote Sensing

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A catastrophic tailings dam failure disaster occurred in Brumadinho, Brazil on 25 January 2019, which resulted in over 270 casualties, 24,000 residents evacuated, and a huge economic loss. Environmental concerns were raised for the potential pollution of water due to tailings waste entering the Paraopeba River. In this paper, a detailed analysis has been carried out to investigate the disaster conditions of the Brumadinho dam failure using satellite images with different spatial resolutions. Our in-depth analysis reveals that the hazard chain caused by this failure contained three stages, namely dam failure, mudflow, and the hyperconcentrated flow in the Paraopeba River. The variation characteristics of turbidity of the Rio Paraopeba River after the disaster have also been investigated using high-resolution remote sensing images, followed by a qualitative analysis of the impacts on the downstream reservoir of the Retiro Baixo Plant that was over 300 km away from the dam failure origin. It is believed that, on the one hand, the lack of dam stability management at the maintenance stage was the main cause of this disaster. On the other hand, the abundant antecedent precipitation caused by extreme weather events should be a critical triggering factor. Furthermore, the spatiotemporal pattern mining of global tailings dam failures revealed that the Brumadinho dam disaster belonged to a Consecutive Hot Spot area, suggesting that the regular drainage inspection, risk assessment, monitoring, and early warning of tailings dam in Consecutive Hot Spot areas still need to be strengthened for disaster mitigation.

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Untitled

Cited by 67 publications

References 10 publications

Can Potassium Silicate Mineral Products Replace Conventional Potassium Fertilizers in Rice–Wheat Rotation?

Can Potassium Silicate Mineral Products Replace Conventional Potassium Fertilizers in Rice–Wheat Rotation?

Kamafugite From the Alto Paranaíba Province as a Multi-nutrient Fertilizer

Watch Out for the Tailings Pond, a Sharp Edge Hanging over Our Heads: Lessons Learned and Perceptions from the Brumadinho Tailings Dam Failure Disaster

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