Influence of nitrogen fertilization on morphological characters, yieldforming components and seed yield of oilseed flax
2001
Candrakova, E. | Bakula, J. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic). Katedra Rastlinnej Vyroby)
Over 1998-1999 small-plot field trials with oilseed flax were carried out in order to obtain a knowledge of cropping oilseed flax under the conditions in Slovakia and find out the yield potential and the structure of yield forming components of this crop. The variety Flanders was used for investigation. A seed rate was 8 mil. of germinable seeds per hectare. Four treatments of fertilization were compared during the vegetation season: unfertilized control and three treatments of nitrogen fertilization. A rate of nitrogen was 20 kg per hectare. Nitrogen was applied in the form of amonnium nitrate at the beginning of slow growth phase and in the form of DAM 390 and Fostim at the beginning of fast growth phase. Oilseed flax stand had a high autoregulation ability to form yield components. The highest autoregulation ability was observed for a number of branches per plant (6.05 in 1998, 9.19 in 1999) and a number of capsules per plant (11.63 in 1998, 23.46 in 1999). The number of seeds per capsule was characterised by low variability (9.14 in 1998, 9.11 in 1999). Oilseed flax has achieved biological yields in a range from 7.19 to 9.81 tons per hectare and seed yields from 3.28 to 5.07 tons per hectare. Fertilization had no significant effect on the characters observed, which was caused because of a high stock of acceptable nutrients in soil at the site where the experiments were performed
显示更多 [+] 显示较少 [-]