Planting and tending productivity comparison in mounds and disc trenches using containerized and bareroot coniferous seedlings
Laen...
Kuupäev
2019
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
In 2016 more then 40,300 ha of forest was regenerated in Latvia, where 13,000 ha were
seeded or planted and 30,300 ha were left in natural regeneration. Before planting, usually one of
two soil preparation methods are used – mounding or disc trenching. In areas with optimal water
regime, disc trenching is used, while in wet areas mounding is used. Tree planting and after
planting tending is done manually by hand tools. The aim of the study was to compare planting
and tending productivity in different soil preparation methods (mounding and disc trenching) by
planting different stocktypes (containerized and bareroot seedlings). Planting time studies were
done in 12 sites and tending time studies in 8 sites. In planting time studies, different planting
operations were measured and compared. In tending time studies, GPS devices were used, where
area, distance and working time (productive and rest) was counted from GPS data. Average
planting time for containerized seedlings in disc trenches was 10.3 seconds, while in mounds 9.2
seconds per seedling, an 11% improvement. Average planting time for bareroot seedlings in
mounds was 28.3 seconds, while in trenches – 18.2 seconds, a 35% improvement. Tending in
trenches was done faster than in mounds. On average, one hectare tending time in mounds was
8.4 hours, while in trenches 7.4 hours, an 11% improvement. Walked distance for 1 hectare
tending in mounds was 5.4 km, 7% shorter than the distance of 5.0 km in trenches. Factors that
influence planting and tending productivity are soil preparation quality, logging residue, and
water level on the site. Data from planting and tending time studies could be used for better plan
work activities and select suitable planting material for a particular soil preparation method.
Kirjeldus
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Märksõnad
planting time studies, planting productivity, tending time studies, tending productivity, planting in mounds, planting in trenches, articles