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1.

001-es BibID:BIBFORM093826
Első szerző:Balláné Kovács Andrea (vegyész)
Cím:Effect of Application of Nitrogen and Different Nitrogen-Sulfur Ratios on the Quality and Quantity of Mustard Seed / Andrea Balla Kovács, I. Kincses, I. Vágó, J. Loch, T. Filep
Dátum:2009
ISSN:0010-3624 1532-2416
Megjegyzések:A greenhouse experiment was conducted on a calcareous chernozem soil to investigate the effects of nitrogen (N) and sulfur (S) fertilization and their ratios on the yield and quality of white mustard (Sinapis alba L.). Four levels of N [0.5, 1, 1.5, and 2 g pot21 N as ammonium nitrate (NH4NO3) and ammonium phosphate (NH4H2PO4)] in combination with three levels of applied N?S ratios [8, 4, 2; S as potassium sulfate (K2SO4) and sodium sulphate (Na2SO4)] were tested as treatments. Results indicated that a significant response to seed yield was observed for N and S application. Maximum yield, 24.8 g pot21 , was found when full doses of N and S were applied. Increasing N supply from 0.5 g pot21 to 1 g pot21 had little increasing effect in the oil content of the seed. Higher application of N doses (.1 g pot21 ) decreased these values significantly. The maximum oil content (28%) was achieved with the 1 g N pot21 treatment; the lowest values were observed in the pots applied with the highest N doses. Changes in the N content of the seed and straw showed a statistically significant increase with increasing N and S fertilization. Highest values in the seed and straw (5.96% and 0.87%, respectively) were observed by applying highest N and S doses. Seed and straw S levels were also observed to increase with increasing N rates and decreasing N?S ratio. Nitrogen doses significantly improved the quantities of essential amino acids with the exception of threonine, tyrosine, phenylalanine, and methionine. The amounts of these amino acids decreased with increasing N supply. When the N?S ratio decreased by increasing S, the quantities of valine, isoleucine, leucine, lysine, methionine, and cysteine increased significantly and the amount of tyrosine decreased. The quantities of nonessential amino acids with the exception of proline, histidine, and glycine increased with increasing N doses. In contrast, N rates decreased the amount of glycine. Decreasing the N?S ratio lowered the proline and arginine contents. The total amounts of essential amino acids slightly increased with increasing N rates and decreasing N?S ratio.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Amino acid
mustard
nitrogen
N/S ratio
oil content
Megjelenés:Communications In Soil Science And Plant Analysis. - 40 : 1-6 (2009), p. 453-461. -
További szerzők:Kincses Sándorné (1964-) (agrokémia) Vágó Imre (1953-) (vegyészmérnök) Loch Jakab (1932-2023) (kémikus) Filep Tibor
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2.

001-es BibID:BIBFORM119842
Első szerző:Bertáné Szabó Emese (agrármérnök)
Cím:Assessment of Environmentally Harmful Nitrogen Surplus by 0.01 M Calcium Chloride Soil Extractant in Long-Term Experiments / Emese Bertáné Szabó, Zoltán Győri, Rita Kremper, György Zsigrai, Jakab Loch
Dátum:2014
ISSN:0010-3624 1532-2416
Megjegyzések:Calcium chloride-extractable (1:10 soil/solution ratio, w/v) nitrate nitrogen (NO3-N), ammonium nitrogen (NH4-N), organic nitrogen (EON), and Ntotal fractions were measured in two long-term experiments. Both experiments are located in the Great Hungarian Plain. The first experiment was established on a Luvic Phaeozem soil and the second experiment was on a Calcic Chernozem soil. Researchers investigated the effects of long-term fertilization and irrigation on the amounts of nitrogen (N) fractions. Nitrogen rates caused significant increase in NO3-N and Ntotal fractions. These fractions were in close correlation (r = 0.87; r = 0.88) with nitrogen balance. The nitrate content of the 200-cm-deep soil layer of soils under different nitrogen- and water-supply conditions were also studied. As an effect of N overfertilization, the maximum nitrate accumulation on nonirrigated plots occurred in the 200-cm depth, whereas on irrigated plots a nitrate accumulation layer could not be observed in the 200-cm-deep soil layer
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Long-term experiments
0.01 M CaCl2 extractable N forms
nitrate leaching
Megjelenés:Communications In Soil Science And Plant Analysis. - 45 : 11 (2014), p. 1453-1463. -
További szerzők:Győri Zoltán (1948-) (vegyész) Kremper Rita (1969-) (matematika-kémia tanár, angol szakfordító) Zsigrai György (1962-) (agrármérnök-kutató) Loch Jakab (1932-2023) (kémikus)
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3.

001-es BibID:BIBFORM108391
035-os BibID:(WOS)000264218900021 (Scopus)69349090678
Első szerző:Filep Tibor
Cím:Cadmium and chromium fractions on different soils as affected by communal sewage sludge loads / Tibor Filep, Márk Rékási, Imre Kádár, Andrea B. Kovács
Dátum:2009
ISSN:0010-3624 1532-2416
Megjegyzések:A pot experiment was set up in 1999 for examining the effect of sewage sludge loads on soils and plants. Four soils were used. Soils can be classified as the following: O? rbottya?n, calcareous sandy soil; Nagyho?rcso?k, calcareous silty soil; Gyo?ngyo?s, acidic silty soil; and Nyı?rlugos, acidic sandy soil. Applied sewage sludge loads were 0, 2.5, 5, 10, and 20 g sludge DM/kg air-dry soil. From the soil samples, total recoverable [cc. nitric acid (HNO3) + hydrogen peroxide (H2O2) digestion], extractable [0.5 M ammonium acetate + 0.02 M ethylenediaminetetraacetic acid (EDTA)-extractable], and the mobile [1 M ammonium nitrate (NH4NO3)-extractable] elemental concentrations were measured. There was an increase in all of three fractions after sewage sludge application for both cadmium (Cd) and chromium (Cr); the extent of changes was varied. To quantify the Cd and Cr response to sewage sludge loads, sewage sludge loads vs. elemental concentration functions were plotted, and the slope of these functions means sensitivity of soils in the given fraction. After examining the sensitivity of four soils in the three fractions for elements investigated, it can be stated that the most sensitive fraction was the total recoverable fraction. The ammonium acetate + EDTA-extractable fraction has the second greatest sensitivity, whereas NH4NO3 extraction was a good indicator for treatments only on sandy soils. However, the strongest correlation was found between mobile Cd and Cr and the plant element uptake. So there is an obvious contradiction: the fraction that is less sensitive to sewage sludge treatments has the strongest correlation with plant uptake.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Cd
Cr
Lakanen-Erviö extraction
NH4NO3-extractable fraction
total recoverable element fraction
Megjelenés:Communications in Soil Science and Plant Analysis. - 40 : 1-6 (2009), p. 303-312. -
További szerzők:Rékási Márk Kádár Imre Balláné Kovács Andrea (1967-) (vegyész)
Pályázati támogatás:T-049552
OTKA
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4.

001-es BibID:BIBFORM102429
Első szerző:Győri Zoltán (vegyész)
Cím:Sulphur Content of Winter Wheat Grain in Long Term Field Experiments / Győri, Zoltán
Dátum:2005
ISSN:0010-3624 1532-2416
Megjegyzések:Sulphur is an essential element for both plants and animals. Decreasing sulphur deposition from the air, and the use of more concentrated phosphate fertilizers that contain less sulphur, has led to reports of sulphur deficiencies for winter wheat. Sulphur deficiency significantly effects production and quality of winter wheat. Sulphur deficiency decreases grain size and baking quality because of formation of disulfide bonds formed from the sulphydryl groups of cysteine. This effects the viscoelasticity of dough. The purpose of this study was to evaluate the effect of NPK fertilization on sulphur concentration in winter wheat grain on different soil types. We analyzed wheat grain, grown at various locations where fertiliser had been applied for many years in places throughout Hungary, for sulphur content. These experiments were conducted using the identical varieties and fertiliser treatments at eight locations. At a separate location, additional varieties were also evaluated. The sulphur contents of the grains were determined by using ICP-AES equipment. The sulphur contents of winter wheat varieties in Hungary averaged 1500 mg/kg and the difference between the varieties was as much as 120 mg/kg. The sulphur contents are influenced not only by sulphur fertilisers, but nitrogen fertilisers as well. Due to the strong N-S relationships, fluctuations in protein contents also caused decreases/increases in the sulphur contents of the wheat grain. The N-S relationship could be described by using a mathematical linear function. Annual applications of 100 kg/ha superphosphate, containing more than 10 kg sulphur, provide sufficient sulphur to produce a 5 t/ha grain yield. This study suggests that a 1500 mg/kg value for sulphur content in winter wheat grain is sufficient to maintain good yield and grain quality.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Communications In Soil Science And Plant Analysis. - 36 : 1-3 (2005), p. 373-382. -
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5.

001-es BibID:BIBFORM093802
Első szerző:Holb Imre (agrármérnök)
Cím:Seasonal Dynamics of Nitrogen, Phosphorus, and Potassium Contents of Leaf and Soil in Environmental Friendly Apple Orchards / I. J. Holb, I. Gonda , I. Vágó, P. T. Nagy
Dátum:2009
ISSN:0010-3624 1532-2416
Megjegyzések:Nowadays, there is increasing interest in environmentally friendly growing systems, and attention has also been paid to the environmental impacts of natural and artificial fertilizations. However, seasonal dynamics of macronutrient status needs further investigations in environmentally friendly apple orchards. Therefore, this study was aimed to determine nitrogen, phosphorus, and potassium contents of leaves in every month during the season and of soil in April and October at Debrecen?Pallag, Hungary, from 2002 to 2004. The study was performed in integrated and organic apple orchards on three apple cultivars (Mutsu, Elstar, and Reka). All easily soluble (0.01 M CaCl2) and plant?available nitrogen fractions (nitrate nitrogen, ammonium nitrogen, and total soluble nitrogen) in the soil were significantly higher (P = 0.05) in the integrated apple orchard compared to the organic one. The 0.01 M calcium chloride (CaCl2) soluble ortho?phosphate and total phosphate fractions of the soil were significantly higher (P = 0.05), whereas organic phosphate and soil pH showed no significant difference in the integrated apple orchard compared to the organic one. Potassium contents of the integrated soils were significantly higher (P = 0.05) compared to those of the organic one. Nitrogen, phosphorus, and potassium contents of leaves were higher in the integrated orchard compared to the organic one. The dynamics of P uptake corresponded to the phenological phases of apple. Potassium content of apple leaves decreased continuously until July, after that it slightly increased, and then it decreased again. In conclusion, results suggest that better mobility of artificial fertilizers in integrated orchards provided higher macronutrient uptake than in organic orchards, where only natural nutrient sources are allowed.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
apple
integrated
leaf
macronutrient
nitrogen
organic
phosphorus
potassium
soil
Megjelenés:Communications In Soil Science And Plant Analysis. - 40 : 1-6 (2009), p. 694-705. -
További szerzők:Gonda István (1947-2022) (kertészmérnök) Vágó Imre (1953-) (vegyészmérnök) Nagy Péter Tamás (1970-) (vegyész)
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6.

001-es BibID:BIBFORM023367
Első szerző:Kremper Rita (matematika-kémia tanár, angol szakfordító)
Cím:Determination of Optimal Nitrogen, Phosphorus, and Zinc Doses in a Multifactoral Pot Experiment / Kremper Rita, Bertáné Szabó Emese, Loch, Jakab
Dátum:2011
ISSN:0010-3624
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Communications In Soil Science And Plant Analysis. - 42 : 18 (2011), p. 2229-2234. -
További szerzők:Bertáné Szabó Emese (1984-) (agrármérnök) Loch Jakab (1932-2023) (kémikus)
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