Vol: 34 Page: 199

Authors:
Zdzisław Wyszyński

Title:
 Investigation of factor effect in 27 type experiment on root yield of sugar beet

Language: Polish

Keywords:
multifactorial experiment
sugar beet
root yield
sowing date
date of harvest
plant density
rate and date of nitrogen application
division of rate
foliar fertilization

Summary:
Methodical assumptions of multifactorial experiment 27 with sugar beet, done with the one full replication are presented. There were evaluated the effect of 7 factors: sowing date (14 and 28 IV), date of harvest (26 and 12 X), plant density (controlled and not controlled), rate of N (130 and 80 kg·ha-1), timing of nitrogen application (before sowing and at the stage of 2 leaf or at the stage of 2 and 6 leaf), division of N rate (60+40% and 100%) as well foliar fertilization (Insol 4 – 1+1,5 and 0 l·ha-1) on the root yield. Introduction to the experiment 7 factor together made enable to classify their importance for sugar beet yielding. From among the studied factors significantly higher root yield on the average during three years investigation was found in the case of early sowing date (by 14.2%), late date of harvest (8.0%), controlled plant density (4.3%), higher nitrogen rate (4.3%). With presowing and at the stage of 2 leaf application of nitrogen significant increment in yield root was noted only in 2 years 1993 and 1994 (by 4.3 and 3.2%, respectively). Division of N rate as well as foliar fertilization did not differentiate significantly root yield.