Fulvic Acid Carbon as a Diagnostic Feature for Agricultural Soil Evaluation

Zalba, Patricia Eugenia; Quiroga, Alberto

doi:10.1097/00010694-199901000-00008

Cited by 29 publications

(22 citation statements)

References 7 publications

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“…During the period 2008-2011, the obtained results were not statistically confirmed; this means that there has been only negative trend in the quality of soil organic matter due to the fertilizer in the vineyard. Zalba and Quiroga (1999) determined a higher content of fulvic acid due to fertilization that affected the narrowing ratio of C HA : C FA ; this corresponds to our results ( Figure 5). Application of fertilization to the soil can increase mineralization (Jagadamma et al 2007) and this negatively affects the stability of organic substances and overall quality of SOM (Zalba & Quiroga 1999).…”

Section: Resultssupporting

confidence: 91%

“…Zalba and Quiroga (1999) determined a higher content of fulvic acid due to fertilization that affected the narrowing ratio of C HA : C FA ; this corresponds to our results ( Figure 5). Application of fertilization to the soil can increase mineralization (Jagadamma et al 2007) and this negatively affects the stability of organic substances and overall quality of SOM (Zalba & Quiroga 1999). The average values of color quotient of humic substances (Q HS ) and humic acids (Q HA ) were the most favourable in the control treatment.…”

Section: Resultssupporting

confidence: 91%

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Effect of Different Doses of Nutrients on Changes of Soil Organic Matter in Rendzic Leptosol

Šimanský¹,

Tobiašová²

2012

Agriculture (Pol'nohospodárstvo)

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The effect of different doses of NPK fertilizer on the changes in quantity and quality of soil organic matter (SOM) in Rendzic Leptosol was evaluated. Soil samples were taken from three treatments of different fertilization: (1) control -without fertilization, (2) NPK 1 -doses of NPK fertilizer in 1 st degree intensity for vine, and (3) NPK 3 -doses of NPK fertilizer in 3 rd degree intensity for vine in the vineyard. Soil samples were collected in years 2008-2011 during the spring. The higher dose of NPK fertilizer (3 rd degree intensity of vineyards fertilization) was responsible for the higher content of labile carbon (by 21% in 0-0.3 m and by 11% as average of the two depths 0-0.3 m and 0.3-0.6 m). However, by application of a higher dose of NPK (1.39%) in comparison to no fertilizer treatment (1.35%) or NPK 1 (1.35%) the tendency of total organic carbon content increase and hot-water soluble carbon decrease were determined. Fertilization had a negative effect on SOM stability. Intensity of fertilization affected the changes in quantity and quality of SOM; therefore it is very important to pay attention to the quantity and quality of organic matter in productive vineyards.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

Effect of Different Doses of Nutrients on Changes of Soil Organic Matter in Rendzic Leptosol

Šimanský¹,

Tobiašová²

2012

Agriculture (Pol'nohospodárstvo)

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“…The extraction procedures followed the methods by Ding et al (2002) for humic acids (HA) and Zalba and Quiroga (1999) for fulvic acids (FA).…”

Section: Density Separation Of Light Fraction (Lf) Materials and Humicmentioning

confidence: 99%

Effect of cover crop management on soil organic matter

et al. 2006

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“…Zalba and Quiroga [1999] determined a higher content of fulvic acids was caused by fertilization and it affected the narrowing ratio of HA:FA. Application of fertilization to the soil can increase mineralization [Jagadamma et al 2007] and this negatively affects the stability of organic substances and overall quality of SOM [Zalba and Quiroga 1999]. In our research, the humus quality based on HA:FA ratio significantly decreased in the following order: N0 > N80 > N40 = N160 > N240 (Fig.1e).…”

Section: Soil Organic Mattermentioning

confidence: 48%

The Effect of Different Doses of N Fertilization on the Parameters of Soil Organic Matter and Soil Sorption Complex

Šimanský¹,

Kováčik²,

Jończak³

2017

J. Ecol. Eng.

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Mineral N fertilizer application may have an effect on soil organic matter and other soil parameters. Therefore, we studied the effects of different doses of N fertilization on soil organic matter and chemical properties of Haplic Luvisol in the locality of Dolná Malanta (Slovakia) during 2014-2016. Soil samples were collected from the plots exposed to the following treatments: 1. The results showed that in N80 the soil organic carbon (SOC) content increased by 32% in comparison to N0. The addition of 80 kg ha -1 of N significantly decreased the humic substances (HS) content in the soil by 16% compared to N0. The higher doses of N fertilization 80 rather than 40 kg ha -1 as well as 240 rather than 160 kg ha -1 significantly decreased humus stability. The addition of N fertilization decreased the average values of soil pH. Values of hydrolytic acidity (Ha) increased by 41% and 46% in N40 and N80, respectively than N0, but on the other hand, this one decreased by 36% and 27% in N160 and N240, respectively in comparison to N0. Positive statistically significant correlations were determined between soil pH and SOC in N40 and N80 treatments. The increase of soil pH was connected with higher humus quality in N160 and N240. Negative correlations between humic acids (HA) and sum of basic cations (SBC) and cation exchange capacity (CEC) were observed in N80 < N160 < N240 treatments. Higher values of fulvic acids corresponded with lesser CEC in N80 and N160 treatments. In N160, with increased humus quality, CEC significantly decreased. The same effect was observed in N240. In addition, in N240, we also observed that with increased HA:FA ratio SBC and base saturation significantly decreased.

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Fulvic Acid Carbon as a Diagnostic Feature for Agricultural Soil Evaluation

Cited by 29 publications

References 7 publications

Effect of Different Doses of Nutrients on Changes of Soil Organic Matter in Rendzic Leptosol

Effect of Different Doses of Nutrients on Changes of Soil Organic Matter in Rendzic Leptosol

Effect of cover crop management on soil organic matter

The Effect of Different Doses of N Fertilization on the Parameters of Soil Organic Matter and Soil Sorption Complex

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