Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 412760
Title Analysis of soil characteristics, soil management and sugar yield on top and averagely managed farms growing sugar beet (Beta vulgaris L.) in the Netherlands
Author(s) Hanse, B.; Vermeulen, G.D.; Tijink, F.G.J.; Koch, H.J.; Märlander, B.
Source Soil & Tillage Research 117 (2011). - ISSN 0167-1987 - p. 61 - 68.
Department(s) PPO/PRI AGRO Field Technology Innovations
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) subsoil compaction - field experiments - tillage - vehicles - systems - sweden - growth
Abstract Within the Speeding Up Sugar Yield (SUSY) project, soil management and soil characteristics were investigated as possible causes of yield differences in fields between 26 ‘type top’ and 26 ‘type average’ growers, ‘top’ and ‘average’ performance being based on past yield data. Growers were pairwise selected so that pairs were located in close proximity and on soils of the same texture. In the project years 2006 and 2007, the top growers had 20% (P <0.001) higher sugar yields compared to the average growers. Top growers made use of comparable equipment, but applied lower tyre inflation pressures and a lower number of field operations for seedbed preparation; their drilling dates were also earlier compared with average growers. This did not result in a significant difference in mean air-filled porosity at field capacity in the topsoil (AP) between grower types, but top growers sowed their beet earlier. The number of fields with a topsoil AP below 10% in the 10–15 cm layer was lower in the group of top growers (13 fields) than in the group of average growers (18 fields). Direct effects of soil management characteristics on AP could not be distinguished statistically without the factor grower type, but may have remained undetected because both management characteristics and AP appeared to be strongly related to topsoil clay content. Mean saturated hydraulic conductivity (Ks) in the most dense 5-cm thick subsoil layer (within 25–45 cm depth range) was significantly higher for fields of top growers than for average growers at 0.49 and 0.31 m day-1, respectively. Mean Ks was below a damage threshold level of 0.10 m day-1 on 34% of the average growers’ fields and on 27% of the top growers’ fields. Ks was zero (0.00) m day-1 on 9% of all fields. The relative importance of these findings is discussed in this paper. In a multiple regression analysis without the factor grower type, 15.3% of the variability of Ks was explained by a model with the terms of fine sand fraction (50–105 µm) in the subsoil and depth of primary tillage (Dpt; m). A statistical model with AP of the topsoil and Ks of the subsoil could explain 24.9% of the variation in sugar yield for all fields tested, being representative for Dutch sugar beet production, indicating that a good soil structure is needed to obtain high sugar yields. Highlights ¿ The fields of higher yielding top growers had higher Ks and thus less subsoil compaction compared to the average growers. ¿ Top growers made better use of the same equipment at seedbed preparation. ¿ AP depended strongly on topsoil clay content. ¿ Depth of primary tillage and the nature of the soil (sand content subsoil) explained the Ks by 15.3%. ¿ In dependency of subsoil fine sand content and sowing date, Ks and AP explained 24.9% of variance in sugar yield. Keywords: Grower performance; Competitiveness; Beta vulgaris L.; Soil compaction; Hydraulic conductivity; Air-filled porosity; Sowing date; Tyre inflation pressure; Sugar yield; Pairwise comparison; Soil management
There are no comments yet. You can post the first one!
Post a comment
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.