Komainda, Martin

[["dc.bibliographiccitation.firstpage","51"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nutrient Cycling in Agroecosystems"],["dc.bibliographiccitation.lastpage","69"],["dc.bibliographiccitation.volume","110"],["dc.contributor.author","Komainda, Martin"],["dc.contributor.author","Taube, Friedhelm"],["dc.contributor.author","Kluß, Christof"],["dc.contributor.author","Herrmann, Antje"],["dc.date.accessioned","2019-07-31T08:50:16Z"],["dc.date.available","2019-07-31T08:50:16Z"],["dc.date.issued","2017"],["dc.description.abstract","Under the climatic conditions of north-western Europe, silage maize (Zea mays L.) production optimized with respect to nitrogen (N) fertilization and crop rotation is required to reduce N losses. Whether winter catch crops (CC) can serve as a beneficial biological tool in terms of N-loss abatement as well as maize yield also under optimized N management, is unclear. Therefore, a 2-year field experiment was conducted to study the short-term effects of a continuous maize-catch cropping system on maize yield performance, N2O emission and N leaching, as affected by maize harvest/CC sowing date (10, 20, 30 September and 15 October, respectively, hd1–hd4) and CC species (rye, Secale cereale L. and Italian ryegrass, Lolium multiflorum Lam.). Treatments without CC served as control and N fertilization was applied as synthetic N to better adjust to maize N demand. The CC treatment (with or without) had no effect on maize dry matter and N yields, but the N uptake efficiency of maize responded significantly to the N accumulation (Ntot) of CC. Nitrate leaching mostly stayed below the critical load value for EU drinking water and rye significantly reduced nitrate leaching, given that environmental conditions allowed sufficiently high CC biomass accumulation. Annual nitrous oxide emission was unaffected by CC treatment. Restricted N fertilization of maize following CC led to N deficiency, since CC decomposition obviously was not synchronized with maize N demand. Under the given environmental conditions, rye may serve as beneficial CC in continuous maize cropping even in already optimized N management."],["dc.identifier.doi","10.1007/s10705-017-9839-9"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62231"],["dc.language.iso","en"],["dc.relation.issn","1385-1314"],["dc.relation.issn","1573-0867"],["dc.title","Effects of catch crops on silage maize (Zea mays L.): yield, nitrogen uptake efficiency and losses"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","51"],["dc.bibliographiccitation.journal","European Journal of Agronomy"],["dc.bibliographiccitation.lastpage","62"],["dc.bibliographiccitation.volume","92"],["dc.contributor.author","Komainda, Martin"],["dc.contributor.author","Taube, Friedhelm"],["dc.contributor.author","Kluß, Christof"],["dc.contributor.author","Herrmann, Antje"],["dc.date.accessioned","2019-07-31T08:48:22Z"],["dc.date.available","2019-07-31T08:48:22Z"],["dc.date.issued","2018"],["dc.description.abstract","There are two major environmental constraints of silage maize (Zea mays L.) production: loss of soil organic carbon (SOC) and nitrogen (N) leaching to groundwater. Winter catch crops (CC) increase carbon inputs and can accumulate residual N, but only if the preceding maize is harvested timely to allow high above- and belowground biomass and N accumulation. To quantify the combined effects of hybrid maize variety and harvest date on forage yield and quality, as well as on root dynamics, root turnover and carbon input, a two-year field experiment (April 2012–October 2013) was conducted in northern Germany. Early maturing Suleyka was harvested at 10 (hd1) and 20 (hd2) September and mid-early Ronaldinio at 30 September (hd3) and 15 October (hd4). Maize hybrids showed no consistent differences of aboveground dry matter (DM) and N accumulation dynamics. Only the very early harvest (hd1) resulted in 11–13% lower DM yields. Sufficiently high DM and starch contents, however, were not achieved at harvest dates prior to hd3 (30 September). Similar to shoot yield, the final accumulated root biomass, carbon (C) and N were not affected by hybrid/harvest date, and on average amounted 2.48 t DM, 1.2 t C and 52.9 kg N ha‐1 in the upper soil depth of 30 cm, which represented between 77 and 75% of the DM, C and N accumulation to 60 cm soil depth. Root turnover during the growing season reached up to 65, 75 and 69% of root DM, N and C. Stubble DM and C left on the field, however, was 31% lower at early harvest (hd1) compared to later harvests, resulting in a trade-off to total C inputs compared to delayed harvest. The quantified C inputs are discussed by two C balance approaches, which indicate that silage maize cultivation is not necessarily associated with SOC degradation, especially if winter catch crops are introduced."],["dc.identifier.doi","10.1016/j.eja.2017.10.003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62230"],["dc.language.iso","en"],["dc.relation.issn","1161-0301"],["dc.title","The effects of maize ( Zea mays L.) hybrid and harvest date on above- and belowground biomass dynamics, forage yield and quality – A trade-off for carbon inputs?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","31"],["dc.bibliographiccitation.journal","European Journal of Agronomy"],["dc.bibliographiccitation.lastpage","42"],["dc.bibliographiccitation.volume","79"],["dc.contributor.author","Komainda, Martin"],["dc.contributor.author","Taube, Friedhelm"],["dc.contributor.author","Kluß, Christof"],["dc.contributor.author","Herrmann, Antje"],["dc.date.accessioned","2019-07-31T08:51:25Z"],["dc.date.available","2019-07-31T08:51:25Z"],["dc.date.issued","2016"],["dc.description.abstract","Regions in north-western Europe characterized by high density of livestock/biogas plants and extensive silage maize production are facing major environmental challenges due to excessive residual soil mineral nitrogen (N) in autumn and hence nitrate leaching. Winter catch crops (CC) have potential to accumulate residual N; however, the N uptake potential after maize harvest in autumn and spring remains unclear. Therefore, a two-year field trial (April 2012–April 2014) was conducted at three sites, to quantify the combined effects of four consecutive CC sowing dates (10 Sep; 20 Sep; 30 Sep and 15 Oct) and two CC species (rye, Secale cereale. L. and Italian ryegrass, Lolium multiflorum Lam.) on DM accumulation and N uptake of CC above- and belowground in autumn and spring, and to derive functional relationships. The results clearly showed that rye was more effective in accumulating biomass and nitrogen than Italian ryegrass. The better performance of rye was related to increased growth intensity of roots and shoot, a different allocation pattern and higher N uptake efficiency. An exponential function of temperature sum (Tsum) produced a reliable prediction of above- and belowground biomass and N. To achieve an agronomically relevant N uptake of 20 kg N ha−1, rye required 278 °Cd Tsum, which corresponds to a sowing date latest in the second decade of September. Under favourable growing conditions, a biomass accumulation of up to 5 Mg DM ha−1, corresponding to 83 kg N ha−1 above- and belowground, seems achievable under the given environmental conditions. In continuous maize grown under the environmental conditions of Northern Germany, however, catch crops will not reach a relevant N uptake on the long-term average."],["dc.identifier.doi","10.1016/j.eja.2016.05.007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62232"],["dc.language.iso","en"],["dc.relation.issn","1161-0301"],["dc.title","Above- and belowground nitrogen uptake of winter catch crops sown after silage maize as affected by sowing date"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dspace.entity.type","Publication"]]