Investigations about the impact of the sowing time and rate of the biomass yield and quality of industrial hemp
Laen...
Kuupäev
2017
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The aim of this study was to find the optimum sowing rate of industrial hemp
(Cannabis sativa L.) and to clarify the impact of the sowing rate on the production of biofuel
from hemp biomass in Latvia. Field trials were carried out at the Research and Study Farm
‘Pēterlauki’ of the Latvia University of Agriculture in 2012–2014. The industrial hemp (Cannabis
sativa L.) ‘Futura 75’ was sown in a Luvic Endogleyic Stagnosol soil: pHKCl 6.7; P – 52 mg kg-1
;
K – 128 mg kg-1
; the organic matter content – 21–25 g kg-1
. Hemp was sown in 10-m2 plots,
triplicate, on May 8 and 17. The total sowing rate was 20 (100), 30 (150), 40 (200), 50 (250),
60 (300), 70 (350), 80 (400), 90 (450), and 100 (500) kg ha-1
(germinating seeds per 1 m2
). The
plots were fertilised as follows: N – 120 kg ha-1
; P2O5 – 80 kg ha-1
; and K2O – 112 kg ha-1
. Hemp
was harvested when the first matured seeds appeared. The biometrical indices (height and stem
diameter), harvesting time, the amount of fresh and dry biomass, and the fibre content were
evaluated. Depending on the sowing rate, the yield of dry matter was on average 9.2–12.1 t ha-1
when hemp was sown at the beginning of May, and 7.9–10.0 t ha-1 when hemp was sown in the
middle of May.
Kirjeldus
Article
Märksõnad
industrial hemp, sowing time and rate, yield, quality, articles