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The effect of nitrogen and sulphur fertilization on yield and quality of kohlrabi (Brassica oleracea, L.)

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dc.title The effect of nitrogen and sulphur fertilization on yield and quality of kohlrabi (Brassica oleracea, L.) en
dc.contributor.author Lošák, Tomáš
dc.contributor.author Hlušek, Jaroslav
dc.contributor.author Kráčmar, Stanislav
dc.contributor.author Varga, Ladislav
dc.relation.ispartof Revista Brasileira de Ciencia do Solo
dc.identifier.issn 0100-0683 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2008
utb.relation.volume 32
utb.relation.issue 2
dc.citation.spage 697
dc.citation.epage 703
dc.type article
dc.language.iso en
dc.publisher Sociedade Brasileira de Ciencia do Solo
dc.relation.uri http://www.scielo.br/scielo.php?script=sci_issuetoc&pid=0100-068320080002&lng=en&nrm=iso
dc.subject Amino acid concentrations en
dc.subject Ammonium sulphate en
dc.subject Dose en
dc.subject Leaves en
dc.subject Nitrates en
dc.subject Tuber en
dc.subject Brassica oleracea en
dc.subject Brassica oleracea var. Capitata en
dc.subject Brassica oleracea var. Gongylodes en
dc.description.abstract In a greenhouse pot experiment with kohlrabi, variety Luna, we explored the joint effect of N (0.6 g N per pot = 6 kg of soil) and S in the soil (25-35-45 mg kg-1 of S) on yields, on N, S and NO3- content in tubers and leaves, and on alterations in the amino acids concentration in the tubers. S fertilisation had no effect on tuber yields. The ranges of N content in tubers and leaves were narrow (between 1.42-1.48 % N and 1.21-1.35 % N, respectively) and the effect of S fertilisation was insignificant. S concentration in the tubers ranged between 0.59 and 0.64 % S. S fertilisation had a more pronounced effect on the S concentration in leaf tissues where it increased from 0.50 to 0.58 or to 0.76 % S under the applied dose. The NO 3content was higher in tubers than in leaves. Increasing the S level in the soil significantly reduced NO3- concentrations in the tubers by 42.2-53.6 % and in the leaves by 8.8-21.7 %. Increasing the S content in the soil reduced the concentration of cysteine + methionine by 16-28 %. The values of valine, tyrosine, aspartic acid and serine were constant. In the S 0, Si, and S2 treatments the levels of threonine, isoleucine, leucine, arginine, the sum of essential amino acids and alanine decreased from 37 to 9 %. The histidine concentration increased with increasing S fertilisation. S fertilisation of kohlrabi can be recommended to stabilize the yield and reduce the undesirable NO3- contained in the parts used for consumption. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002434
utb.identifier.obdid 43857506
utb.identifier.scopus 2-s2.0-46849090123
utb.identifier.wok 000256773500024
utb.source j-scopus
dc.date.accessioned 2011-09-30T00:10:05Z
dc.date.available 2011-09-30T00:10:05Z
dc.rights Attribution-NonCommercial-NoDerivs 4.0 Unported
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.access openAccess
utb.contributor.internalauthor Kráčmar, Stanislav
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