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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-) (kémikus) Filep Tibor
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2.

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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3.

001-es BibID:BIBFORM093833
Első szerző:Vágó Imre (vegyészmérnök)
Cím:Hundredth molar calcium chloride extraction procedure. part III: Calibration with conventional soil testing methods for magnesium / Loch, J.; Jaszberenyi, I.; Vago, I.
Dátum:1998
ISSN:0010-3624 1532-2416
Megjegyzések:The results of a joint project of institutes in the Czech Republic, Hungary, Poland, and the Netherlands on calibration of the 0.01M calcium chloride (CaCl2) soil testing procedure for magnesium (Mg) are presented. In soil samples collected in the participating countries, the analytical procedure for soil research according conventional extraction procedures are compared with data achieved with the 0.01M CaCl2 procedure. Linear and quadratic regression analysis were applied to quantify the relations of Mg in the 0.01M CaCl2 extract with the different conventional extractants. With the relatively weak extractant, 0.01M CaCl2 somewhat lower quantities of Mg are extracted from the soil samples compared to the extraction solutions used in Poland (0.0125M CaCl2), in Hungary [1M potassium chloride (KCl)], and in the Netherlands [0.5M sodium chloride (NaCl)]. With the relatively strong extractant used in the Czech Republic (Mehlich II), more Mg is extracted. The relations of conventional extraction procedures and 0.01M CaCl2 for Mg have such high correlation coefficients that direct translation of interpretation tables for the Mg status of soils is considered to be possible.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Communications In Soil Science And Plant Analysis. - 29 : 11-14 (1998), p. 1633-1640. -
További szerzők:Jászberényi István Loch Jakab (1932-) (kémikus)
Pályázati támogatás:ERB-CIPA-CT-940221
Egyéb
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