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dc.contributorGrando, Stefaniaen_US
dc.contributorImpiglia, Alfredoen_US
dc.creatorCeccarelli, Salvatoreen_US
dc.identifier.citationSalvatore Ceccarelli, Stefania Grando, Alfredo Impiglia. (1/10/1998). Choice of selection strategy in breeding barley for stress environments. Euphytica, 103, pp. 307-318.en_US
dc.description.abstractProductivity of 3 different 2-year crop rotations: namely continuous wheat, wheat-chickpea, and wheat-fallow, was measured over 4 consecutive seasons beginning in 1991-92 at the ICARDA station, Tel Kadya, Syria. Nitrogen (N) fertiliser (30 kg N/ha at sowing) was broadcast every other year in the continuous wheat only. N-15-labelled fertiliser was used to quantify the amount of nitrogen supplied to the crops through current and past applications of fertiliser and by N-2 fixation. The remaining N in the crop was assumed to come from the soil. In any single season, wheat yields were unaffected by rotation or N level. However: 2-year biomass production was significantly greater (32%, on average) in the continuously cropped plots than in the wheat-fallow rotation. On average, <10% of the N in the wheat crop came from fertiliser in the season of application, and <1.2 kg N/ha of the residual fertiliser was recovered by a subsequent wheat crop. Chickpea fixed 16-48 kg N/ha, depending on the season, but a negative soil N budget was still likely because the amount of N removed in the grain was usually greater than the amount of atmospheric NP fixed. Uptake of soil N was similar in the cereal phase of all 3 rotations (38 kg N/ha, on average), but over the whole rotation at least 33% more soil N was removed from continuously cropped plots than from the wheat-fallow rotation, suggesting that the latter is a more sustainable system. A laboratory study showed that although wheat and chickpea residues enhanced the gross rate of N mineralisation by c. 50%, net rates of N mineralisation were usually negative. Given the high C/N ratio of the residue, immobilisation, rather than loss processes, is the likely cause of the decline in the mineral N content of the soil. Consequently, decomposition of crop residues in the field may in the short term reduce rather than increase the availability of N for crop growth.en_US
dc.publisherSpringer (part of Springer Nature)en_US
dc.rightsCopyrighted; all rights reserveden_US
dc.sourceEuphytica;103,Pagination 307,318en_US
dc.subjectresponse to selectionen_US
dc.subjectspecific adaptationen_US
dc.subjectgenotype by environment interactionen_US
dc.subjectlow-input agricultureen_US
dc.titleChoice of selection strategy in breeding barley for stress environmentsen_US
dc.typeJournal Articleen_US
cg.subject.agrovochordeum vulgareen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerDepartment of Agriculture and Food Western Australia - DAFWAen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
dc.identifier.statusTimeless limited accessen_US

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