Steingrobe, Bernd

[["dc.bibliographiccitation.firstpage","143"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","European Journal of Agronomy"],["dc.bibliographiccitation.lastpage","151"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Steingrobe, B."],["dc.contributor.author","Schmid, H."],["dc.contributor.author","Claassen, N."],["dc.date.accessioned","2018-11-07T08:34:24Z"],["dc.date.available","2018-11-07T08:34:24Z"],["dc.date.issued","2001"],["dc.description.abstract","To measure root production by the ingrowth core method mesh bags filled with root-free soil are buried into the root zone of plants. After a time period which should be shorter than the lifespan of the roots the mesh bags are pulled out and root length inside the cores is determined. A major objection against this method is a possible alteration of root growth pattern induced by root injuries or soil disturbances that occur during the insertion of the mesh bags into the soil. Root length density (RLD) in the mesh bags was between 0.7 and 5.0 cm cm(-3) after 14 days of ingrowth of wheat or barley roots depending on soil type or plant age. RLD in the bulk soil next to the mesh bags was between 7.7 and 14.8 cm cm(-3) in the 0-30 cm soil depth. Different time periods between inserting the mesh bags and opening them for root ingrowth in which the installation disturbance could settle, had no effect on RLD in the ingrowth cores. There were also no differences in RLD in the direct vicinity around the ingrowth cores and the bulk soil, which was tested by counting roots at profile walls adjacent to the mesh bags and by taking soil samples around the cores with an auger. The conclusion of these results was that no alteration of root growth pattern occurred in or around the ingrowth cores due to the installation of the mesh bags. However, further investigations are necessary to validate this method as a reliable and easy field method for measuring root growth. (C) 2001 Elsevier Science B.V. All rights reserved."],["dc.identifier.doi","10.1016/S1161-0301(01)00100-9"],["dc.identifier.isi","000172061700006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17803"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1161-0301"],["dc.title","The use of the ingrowth core method for measuring root production of arable crops - influence of soil and root disturbance during installation of the bags on root ingrowth into the cores"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1104"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","International Journal of Phytoremediation"],["dc.bibliographiccitation.lastpage","1118"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Stritsis, Christos"],["dc.contributor.author","Steingrobe, Bernd"],["dc.contributor.author","Claassen, Norbert"],["dc.date.accessioned","2018-11-07T09:32:45Z"],["dc.date.available","2018-11-07T09:32:45Z"],["dc.date.issued","2014"],["dc.description.abstract","Maize, sunflower, flax, and spinach differed in the accumulation of Cd when grown on a Cd contaminated soil. This was mainly due to the different Cd net influx, I-n , that varied among species by a factor of up to 30. The objective of this study was to find possible reasons for the different Cd I-n by using a mechanistic model. After 14days of Cd uptake the model calculated only a small Cd depletion at the root surface, e.g. from 0.22mol L(-1)down to 0.19mol L(-1)for maize and from 0.48mol L(-1)down to 0.35mol L(-1)for spinach. Even so the model always overestimated the Cd I-n , for spinach by a factor of 1.5 and for maize by a factor of 10. Only simulating a decrease of C-Li or the root absorbing power, , by 40% to 90% gave an agreement of calculated and measured I-n . This may be interpreted as that about 40% in the case of spinach and 90% in the case of maize of the Cd in soil solution were not accessible for plant uptake. The high sensitivity to also shows that not the Cd transport to the root but was limiting the step for Cd uptake."],["dc.identifier.doi","10.1080/15226514.2013.821445"],["dc.identifier.isi","000331784200003"],["dc.identifier.pmid","24933905"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31815"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Taylor & Francis Inc"],["dc.relation.issn","1549-7879"],["dc.relation.issn","1522-6514"],["dc.title","CADMIUM DYNAMICS IN THE RHIZOSPHERE AND CD UPTAKE OF DIFFERENT PLANT SPECIES EVALUATED BY A MECHANISTIC MODEL"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","41"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","52"],["dc.bibliographiccitation.volume","246"],["dc.contributor.author","Bhadoria, P. S."],["dc.contributor.author","Steingrobe, B."],["dc.contributor.author","Claassen, N."],["dc.contributor.author","Liebersbach, H."],["dc.date.accessioned","2018-11-07T10:08:37Z"],["dc.date.available","2018-11-07T10:08:37Z"],["dc.date.issued","2002"],["dc.description.abstract","Phosphorus is often limiting crop growth in soils low in P supplying capacity. The objective of this study was to investigate whether there are differences in P efficiency between sugar beet and wheat and to search for the plant properties responsible for different P efficiencies encountered and furthermore to see whether the kind of P binding in soil affects the P efficiency of crops. For this a pot experiment with an Oxisol with P mainly bound to Fe and Al (Fe/Al-P) and a Luvisol with P mainly bound to Ca (Ca-P) was run with increasing P fertilizer levels from 0 to 400 mg kg(-1) in a climate chamber. Shoot dry weights of wheat and sugar beet increased strongly with P application in both soils. Both crops, despite their large differences in plant properties, had the same P efficiency in both soils. Therefore none of the species was especially able to use either Fe/Al-P or Ca-P. Wheat relied on a somewhat lower internal requirement, a large root system ( high root/shoot ratio) and a low shoot growth rate with a low influx while sugar beet with a small root system and a large shoot growth rate relied on a 5 to 10 times higher influx. A mechanistic mathematical model for calculation of uptake and transport of nutrients in the rhizosphere was used to assess the influence of morphological and physiological root properties on P influx. A comparison of calculated and measured P influx showed that prediction by the model is reasonably accurate for Luvisol. For Oxisol, the predicted P influx was much less than the observed one, even when P influx by root hairs was considered. A sensitivity analysis showed that physiological uptake parameters like I-max, K-m, and C-Lmin had no major influence on predicted influx. The greatest influence on influx had the P soil solution concentration C-Li. It is assumed that both species had used mechanisms to increase P availability in the rhizosphere similar to an increase of CLi. Such mechanisms could be the exudation of organic acids, which are known as a sorption competitor to phosphate bound to Fe/Al-oxides or humic-Fe-(Al) complexes or to build soluble complexes with Fe and P. The close agreement between calculated and measured P influx in the Luvisol even at P deficiency indicates that root exudates were not able to mobilize Ca-bound P, whereas Fe/Al-P could be mobilized easily."],["dc.identifier.doi","10.1023/A:1021567331637"],["dc.identifier.isi","000179746900005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39497"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.relation.issn","0032-079X"],["dc.title","Phosphorus efficiency of wheat and sugar beet seedlings grown in soils with mainly calcium, or iron and aluminium phosphate"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","701"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE-ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE"],["dc.bibliographiccitation.lastpage","703"],["dc.bibliographiccitation.volume","167"],["dc.contributor.author","Torres-Dorante, L. O."],["dc.contributor.author","Claassen, N."],["dc.contributor.author","Steingrobe, B."],["dc.contributor.author","Olfs, H. W."],["dc.date.accessioned","2018-11-07T10:43:31Z"],["dc.date.available","2018-11-07T10:43:31Z"],["dc.date.issued","2004"],["dc.identifier.doi","10.1002/jpln.200420452"],["dc.identifier.isi","000225871600006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47073"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1436-8730"],["dc.title","Polyphosphate determination in calcium acetate-lactate (CAL) extracts by an indirect colorimetric method"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","611"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of soil science and plant nutrition"],["dc.bibliographiccitation.lastpage","619"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Steingrobe, Bernd"],["dc.contributor.author","Claassen, Norbert"],["dc.date.accessioned","2020-12-10T14:14:49Z"],["dc.date.available","2020-12-10T14:14:49Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1007/s42729-019-00061-8"],["dc.identifier.eissn","0718-9516"],["dc.identifier.issn","0718-9508"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71513"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Phosphorus Fractionation in Soils Fertilized with Recycled Phosphorus Products"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","121"],["dc.bibliographiccitation.journal","BMC Plant Biology"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Khorassani, Reza"],["dc.contributor.author","Hettwer, Ursula"],["dc.contributor.author","Ratzinger, Astrid"],["dc.contributor.author","Steingrobe, Bernd"],["dc.contributor.author","Karlovsky, Petr"],["dc.contributor.author","Claassen, Norbert"],["dc.date.accessioned","2018-11-07T08:53:06Z"],["dc.date.available","2018-11-07T08:53:06Z"],["dc.date.issued","2011"],["dc.description.abstract","Background: In soils with a low phosphorus (P) supply, sugar beet is known to intake more P than other species such as maize, wheat, or groundnut. We hypothesized that organic compounds exuded by sugar beet roots solubilize soil P and that this exudation is stimulated by P starvation. Results: Root exudates were collected from plants grown in hydroponics under low-and high-P availability. Exudate components were separated by HPLC, ionized by electrospray, and detected by mass spectrometry in the range of mass-to-charge ratio (m/z) from 100 to 1000. Eight mass spectrometric signals were enhanced at least 5-fold by low P availability at all harvest times. Among these signals, negative ions with an m/z of 137 and 147 were shown to originate from salicylic acid and citramalic acid. The ability of both compounds to mobilize soil P was demonstrated by incubation of pure substances with Oxisol soil fertilized with calcium phosphate. Conclusions: Root exudates of sugar beet contain salicylic acid and citramalic acid, the latter of which has rarely been detected in plants so far. Both metabolites solubilize soil P and their exudation by roots is stimulated by P deficiency. These results provide the first assignment of a biological function to citramalic acid of plant origin."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG), Bonn, Germany [FOR546]"],["dc.identifier.doi","10.1186/1471-2229-11-121"],["dc.identifier.isi","000295014600001"],["dc.identifier.pmid","21871058"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/6941"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/22328"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1471-2229"],["dc.rights","CC BY 2.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.0"],["dc.title","Citramalic acid and salicylic acid in sugar beet root exudates solubilize soil phosphorus"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","239"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Plant and Soil"],["dc.bibliographiccitation.lastpage","248"],["dc.bibliographiccitation.volume","237"],["dc.contributor.author","Steingrobe, B."],["dc.contributor.author","Schmid, H."],["dc.contributor.author","Claassen, N."],["dc.date.accessioned","2018-11-07T11:22:26Z"],["dc.date.available","2018-11-07T11:22:26Z"],["dc.date.issued","2001"],["dc.description.abstract","Winter barley was grown in a long-term fertilizer experiment (14 years) using two P treatments: (i) no P fertilization over the whole time (-P) and (ii) an annual fertilization of 44 kg P ha(-1) (+P). The objective of the study was to investigate the influence of the P supply on total root production and root mortality (i.e., root turnover) and to assess the benefit of a more rapid root turnover on P acquisition. Shoot development and grain yield was reduced in the '-P' treatment, whereas the standing root system had nearly the same size as in the '+P' treatment. Gross root growth was measured using the 'ingrowth core method'. Mesh bags filled with root-free soil were buried into the rooting zone (0-30 cm) and root growth into the bags over periods of 2-3 weeks was determined. Assuming that no root mortality occured inside the bags during this short period, root length in the bags will be a measure of total root production. Total root production between April and June exceeded the size of the standing root system by a factor of 2 to 3 and was significantly higher at P deficiency. Root mortality as the difference between total root production and the size of the standing root system was also increased at P shortage. P uptake was calculated by using a mechanistic transport and uptake model. Calculations based on gross root growth and root mortality resulted in a higher uptake than calculations based on the development of the standing root system, although the length of the active roots were the same in both calculations. This was due to a better exploitation of undepleted soil areas by the growing root system. The root renewal by a continuous root growth and root mortality is discussed as a mechanism of P uptake efficiency."],["dc.identifier.doi","10.1023/A:1013345718414"],["dc.identifier.isi","000172862000005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55990"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Kluwer Academic Publ"],["dc.relation.issn","0032-079X"],["dc.title","Root production and root mortality of winter barley and its implication with regard to phosphate acquisition"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","173"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Nutrient Cycling in Agroecosystems"],["dc.bibliographiccitation.lastpage","184"],["dc.bibliographiccitation.volume","91"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Steingrobe, Bernd"],["dc.contributor.author","Roemer, Wilhelm"],["dc.contributor.author","Claassen, Norbert"],["dc.date.accessioned","2018-11-07T08:50:08Z"],["dc.date.available","2018-11-07T08:50:08Z"],["dc.date.issued","2011"],["dc.description.abstract","World phosphorus (P) resources are limited and may be exhausted within 70-175 years. Therefore recycling of P from waste materials by chemical or thermal processes is important. This study evaluated the effectiveness of recycled P products from sewage sludge and animal wastes as P fertilizer. Four products were obtained from chemical processes, three magnesium-ammonium-phosphates (MAP) of different sewage treatment plants and a Ca phosphate precipitated from waste-water (Ca-P) and four from thermal processes, an alkali sinter phosphate (Sinter-P), a heavy metal depleted sewage sludge ash (Sl-ash), a cupola furnace slag made from sewage sludge (Cupola slag) and a meat-and-bone meal ash (MB meal ash). The effectiveness of these products as P fertilizers compared with triple superphosphate (TSP) and phosphate rock (PR) was determined in a 2-year pot experiment with maize (Zea mays L., cv. Atletico) in two soils with contrasting pH (pH(CaCl(2)) 4.7 and 6.6). The parameters used to evaluate the effectiveness were P uptake, P concentration in soil solution (C(Li)) and isotopically exchangeable P (IEP). MAP products were as effective as TSP in both soils, while Ca-P was only effective in the acid soil. Sinter-P was as effective as TSP in the acid soil, while Cupola slag was in the neutral soil. The products Sl-ash and MB meal ash were of low effectiveness and were comparable to PR. The effect of the fertilizers on IEP, but not on C(Li), described their effectiveness. Recycled P products obtained by chemical processes, especially MAP, could be directly applied as P fertilizers, while products such as Sl-ash and MB meal ash are potential raw materials for P fertilizer production."],["dc.identifier.doi","10.1007/s10705-011-9454-0"],["dc.identifier.isi","000297360500006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21627"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1385-1314"],["dc.title","Effectiveness of recycled P products as P fertilizers, as evaluated in pot experiments"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","688"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Plant Nutrition and Soil Science"],["dc.bibliographiccitation.lastpage","695"],["dc.bibliographiccitation.volume","176"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Steingrobe, Bernd"],["dc.contributor.author","Roemer, Wilhelm"],["dc.contributor.author","Claassen, Norbert"],["dc.date.accessioned","2018-11-07T09:18:55Z"],["dc.date.available","2018-11-07T09:18:55Z"],["dc.date.issued","2013"],["dc.description.abstract","Isotopically exchangeable P (IEP) is usually considered to be completely plant-available and the major source of P for plant uptake. The aim of the present study is to test whether plants can, besides IEP, also use non-IEP and if part of the IEP has an equilibrium concentration in soil solution which is below the minimum concentration, C-Lmin, and can therefore not be taken up by plants. A pot experiment was carried out with maize for two years on two soils, an acid sandy and a neutral loamy soil, either without P fertilizer or fertilized with ten P sources of different solubility. Throughout both years of the study, pots were kept moist either without plants or planted twice with maize (Zea mays L., cv. Athletico). At the end of the experiment, plant P uptake, P concentration in the soil solution (C-L), and P accessible to isotopic exchange within 5 d (E-5d) were measured. Plant growth decreased the E-5d which was about equal to P uptake by maize for most treatments in the acid soil. But for some treatments, i.e., five in the acid and eight in the neutral soil, P uptake was up to 50% larger than the decrease of E-5d, indicating that plants had, besides IEP, also used P from non-IEP sources. At adequate P supply, both soils had an E-5d of about 100 mg P (kg soil)(-1), but about 30 to 40 mgkg(-1) of this IEP had an equilibrium P concentration in the soil solution below C-Lmin of 0.1 mol L-1 at which P would actually not be plant-available. This study shows that plants take up P mainly from IEP, but not the whole IEP is plant-available. Furthermore, plants may also use P from non-IEP sources."],["dc.identifier.doi","10.1002/jpln.201200296"],["dc.identifier.isi","000327899800006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/28512"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.issn","1522-2624"],["dc.relation.issn","1436-8730"],["dc.title","Plant availability of isotopically exchangeable and isotopically nonexchangeable phosphate in soils"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","459"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Plant Nutrition and Soil Science"],["dc.bibliographiccitation.lastpage","465"],["dc.bibliographiccitation.volume","163"],["dc.contributor.author","Steingrobe, Bernd"],["dc.contributor.author","Claassen, Norbert"],["dc.contributor.author","Syring, Karl M."],["dc.date.accessioned","2021-12-08T12:27:40Z"],["dc.date.available","2021-12-08T12:27:40Z"],["dc.date.issued","2000"],["dc.description.abstract","The relationship between amount of a nutrient in soil and its concentration in solution, the buffer curve, is usually non-linear. However. most models that calculate nutrient transport in the soil and nutrient uptake by the plant often assume a linear buffer curve because of simpler programming. In this paper a model is presented that uses the Freundlich function to describe the non-linear buffer curve in the soil. It has been shown that calculated uptake and depletion curves were not influenced by the shape of the buffer curve. In a sensitivity analysis the buffer capacity, soil solution concentration, soil water content, soil impedance factor, maximum influx and the curvature of the Freundlich function were varied and the influence on calculated uptake was studied. The buffer capacity in general had a minor influence and the linearity or non-linearity of the buffer capacity had under no circumstances an influence on calculated uptake. Thus, the use of a linear buffer curve in transport models does not lead to a significant error in the results."],["dc.identifier.doi","10.1002/1522-2624(200010)163:5<459::AID-JPLN459>3.0.CO;2-O"],["dc.identifier.isi","000089980400001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/95415"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-476"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-v C H Verlag Gmbh"],["dc.relation.eissn","1522-2624"],["dc.relation.issn","1436-8730"],["dc.rights.uri","http://doi.wiley.com/10.1002/tdm_license_1.1"],["dc.title","The effect of the function type for describing the soil buffer power on calculated ion transport to roots and nutrient uptake from the soil"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]