GLORIA

GEOMAR Library Ocean Research Information Access

X

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Online-Ressource
    Online-Ressource
    Greater accumulation of soil organic carbon after liquid dairy manure application under cereal-forage rotation than cereal monoculture
    Elsevier BV ; 2016
    In:  Agriculture, Ecosystems & Environment Vol. 233 ( 2016-10), p. 171-178
    Details
    In: Agriculture, Ecosystems & Environment, Elsevier BV, Vol. 233 ( 2016-10), p. 171-178
    Materialart: Online-Ressource
    ISSN: 0167-8809
    URL: Article
    DOI: 10.1016/j.agee.2016.09.011
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2016
    ZDB Id: 2013743-6
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 2
    Online-Ressource
    Online-Ressource
    Weed species diversity in spring barley varies with crop rotation and tillage, but not with nutrient source
    Cambridge University Press (CUP) ; 1997
    In:  Weed Science Vol. 45, No. 6 ( 1997-12), p. 798-806
    Details
    In: Weed Science, Cambridge University Press (CUP), Vol. 45, No. 6 ( 1997-12), p. 798-806
    Kurzfassung: The development of sustainable farming systems depends on our ability to predict and manage the response of weed communities to changes in cropping practices. A study was established at Normandin, Québec, Canada, to investigate the influence of liquid dairy manure and mineral fertilizer, as well as chisel and moldboard plow tillage systems, in a spring barley monoculture and a 3-yr spring barley-forage rotation that included red clover and timothy. Weed species richness (Margalef's D MG ), evenness (Shannon's E), and diversity (Shannon's H') were examined in these treatments from 1992 to 1995. Nutrient source had no effect on any of the three diversity indices. Evenness values were extremely low in all years, suggesting dominance of a few weed species in most treatments. Weed species richness and diversity generally were greater in the barley-forage rotation compared with the monoculture. Tillage effects on richness and diversity varied with crop rotation. Margalef's D MG and Shannon's H' were greater in 1993 and 1995, but they were lower in 1994 when chisel was compared with moldboard plowing in the monoculture. In 1994, chickweed density was about five times greater in the chisel-plowed monoculture compared with other treatment combinations of rotation and tillage. In 1995, only one species with a density of six plants m −2 occurred in the moldboard-plowed monoculture compared with three to six species and densities of 51 to 832 plants m −2 in the other rotation by tillage treatments. Climatic conditions and herbicide use patterns in the different crop rotation treatments may have contributed to the more dynamic nature of weed species diversity in the barley monoculture. Reduced frequency of tillage and herbicide application; management of the forage stands, especially with regard to their termination; and improved soil resource availability likely explained the increased but more stable diversity of the weed communities in the barley-forage rotation.
    Materialart: Online-Ressource
    ISSN: 0043-1745 , 1550-2759
    URL: Article
    DOI: 10.1017/S0043174500088998
    Sprache: Englisch
    Verlag: Cambridge University Press (CUP)
    Publikationsdatum: 1997
    ZDB Id: 2123881-9
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 3
    Online-Ressource
    Online-Ressource
    Manure, Tillage, and Crop Rotation: Effects on Residual Weed Interference in Spring Barley Cropping Systems
    Wiley ; 1998
    In:  Agronomy Journal Vol. 90, No. 4 ( 1998-07), p. 496-504
    Details
    In: Agronomy Journal, Wiley, Vol. 90, No. 4 ( 1998-07), p. 496-504
    Kurzfassung: Effects of management practices on crop growth and yields may or may not be mediated through crop‐weed interactions. Our objective was to detect and confirm a relationship between the influence of crop management factors on spring barley ( Hordeum vulgare L.) and the potential occurrence of crop‐weed interference. A field study was established on a Normandin clay (fine, mixed, frigid Humic Cryaquept) at Normandin in Québec to investigate the effects of crop rotation, tillage (chisel plow, CP; moldboard plow, MP), and nutrient source on midseason aboveground dry weight and seed yield of barley and residual weed populations. Barley‐weed interference was detected using ANOVA, principal components analysis, and analysis of covariance. A reduction in midseason dry weight (36%) and seed yield (59%) of barley in the CP relative to the MP treatment in 1994 was associated with interference from broadleaf plantain ( Plantago major L.) and dandelion ( Taraxacum officinale Weber in Wiggers). A 20% reduction in midseason dry weight and seed yield with CP tillage in 1995 was associated with interference from volunteer timothy ( Phleum pratense L.) and Kentucky bluegrass ( Poa pratensis L.). Barley dry weight and seed yield were 29 and 26% greater in the barley‐forage rotation compared with the monoculture in all years except 1995, despite greater weed pressure in the barley‐forage rotation, confirming the benefits of forages to subsequent crops in a rotation. Compared with mineral fertilizer, application of manure resulted in lower dry weight and seed yield for barley; however, this reduction was not associated with weed interference. In contrast to tillage, crop rotation and nutrient source effects on crop variables appeared mediated through factors other than weed interference.
    Materialart: Online-Ressource
    ISSN: 0002-1962 , 1435-0645
    URL: Article
    DOI: 10.2134/agronj1998.00021962009000040010x
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 1998
    ZDB Id: 1471598-3
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 4
    Online-Ressource
    Online-Ressource
    Combining perennial grass–legume forages and liquid dairy manure contributes to nitrogen accumulation in a clayey soil
    Canadian Science Publishing ; 2021
    In:  Canadian Journal of Soil Science Vol. 101, No. 3 ( 2021-09-01), p. 378-388
    Details
    In: Canadian Journal of Soil Science, Canadian Science Publishing, Vol. 101, No. 3 ( 2021-09-01), p. 378-388
    Kurzfassung: Repeated applications of liquid dairy manure (LDM) and perennial crops generally favor nitrogen (N) stocks in soils, but in ways that may differ with soil type and other management practices. The objective of this study was to assess the long-term (21 yr) changes in soil N stocks (0–50 cm) of a silty clay soil, in a cool humid climate, in response to mineral fertilization (MIN) or LDM, combined with two tillage practices [chisel plow (CP), or moldboard plow (MP)], and two crop rotations [cereal monoculture (monoculture) or cereal–perennial forage rotation (forage-based rotation)] . The forage-based rotation favoured a greater accumulation of N in the first 20 cm of soil (+50 kg N·ha −1 ·yr −1 ) when compared with the monoculture. Tillage practices did not impact N stocks in the whole soil profile, but influenced its vertical distribution, with greater accumulation at the surface with CP, and at depth with MP. Annual input of LDM increased N stocks at the surface (0–20 cm) compared with MIN, especially when combined with the forage-based rotation. After 21 yr, soil N stocks (0–50 cm) with LDM were 32% (+2 t N·ha −1 ) higher in the forage-based rotation than in the monoculture, suggesting better retention and more efficient use of manure-N with perennial forages than cereals. Comparisons between the N mass balance computed for each cropping system, and the changes in soil N stocks indicated that accumulation of N under the forage-based rotation was largely due to symbiotic fixation by legumes in the forage mixture.
    Materialart: Online-Ressource
    ISSN: 0008-4271 , 1918-1841
    URL: Article
    DOI: 10.1139/cjss-2020-0132
    Sprache: Englisch
    Verlag: Canadian Science Publishing
    Publikationsdatum: 2021
    ZDB Id: 2017003-8
    ZDB Id: 417254-1
    SSG: 13
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
  • 5
    Online-Ressource
    Online-Ressource
    Interactive effects of management practices on water-stable aggregation and organic matter of a Humic Gleysol
    Canadian Science Publishing ; 2001
    In:  Canadian Journal of Soil Science Vol. 81, No. 5 ( 2001-11-01), p. 545-551
    Details
    In: Canadian Journal of Soil Science, Canadian Science Publishing, Vol. 81, No. 5 ( 2001-11-01), p. 545-551
    Kurzfassung: In many soils, the content and quality of organic matter (OM) control water-stable aggregation, which in turn preserves soil surface integrity. The effects of management practices on soil OM and aggregation remain to be determined for certain soils and climatic conditions. We assessed the effects of eight management systems involving two crop sequences: [barley ( Hordeum vulgare L.) monoculture (M) and barley in rotation (R) with a forage mix of red clover ( Trifolium pratense L.) and timothy ( Phleum pratense L. ‘Champ’)], two fall tillage [moldboard plowing (MP) and chisel plowing (CP)] and two nutrient sources [liquid dairy manure (LDM) and mineral fertilizers (MIN)] on soil aggregation and OM fractions of a silty clay Humic Gleysol. Soil samples from the 0–7.5 cm layer were taken periodically during 7 yr, and the total C and N, microbial biomass C (MBC) and carbohydrate (AHC) contents, alkaline phosphatase activity (APA), and water-stable aggregation were determined. By the 7th yr, initial total C and N contents of the surface soil had increased by 35 and 45%, respectively, in R-CP-LDM. They were slightly increased in R-CP-MIN an d R-MP-LDM, whereas they decreased by an average of 19% in R-MP-MIN and all monoculture plots. Increases in C content s were attributed to higher annual C inputs from forage residues and LDM, less frequent tillage in the rotation, and shallower tillage with CP. The MBC, APA, AHC and aggregation generally responded faster and to a greater degree to conservation management practices than total C and N. Overall, conservation tillage and manure applications resulted in greater improvement in surface soil conditions when used in a rotation system rather than in a monoculture. The rapid rate of changes in soil properties suggests that the surface quality of this cold silty clay soil can be improved relatively quickly with selected management combinations. Key Words: Cropping systems, total soil C, microbial biomass, carbohydrate, alkaline phosphatase, soil aggregation, liquid dairy manure, reducted tillage, rotations
    Materialart: Online-Ressource
    ISSN: 0008-4271 , 1918-1841
    URL: Article
    DOI: 10.4141/S00-078
    Sprache: Englisch
    Verlag: Canadian Science Publishing
    Publikationsdatum: 2001
    ZDB Id: 2017003-8
    ZDB Id: 417254-1
    SSG: 13
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Online-Ressource
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...