nije evidentirano

Vliv hustoty porostu na růst, výnos a kvalitu cukrové řepy

In order to determine the dynamics of fresh mass and dry matter accumulation (leaves and storage root) together with sugar beet root yield and technological quality, a field experiment was set up in spring 2014. Sugar beet was sown in five different densities: 30, 000, 50, 000, 70, 000, 90, 000 and 110, 000 plants/ha. To determine leaf and root dry matter, sugar beet plants were collected four times from June to September 2014. On 17th June sugar beet root dry matter was on average 43.1 g/plant and by 17th September it increased to 330.7 g/plant. The leaf dry matter was highest on 17th August (63.9 g/plant). The root diameter of mature beet (on 17th September) varied from 13.0 cm (70, 000 – 110, 000 plants/ha) to 14.3 cm (30, 000 and 50, 000 plants/ha). The highest root dry matter accumulation per 1 cm root diameter increment was from mid-June to mid- August, when it reached from 78.8 g/plant (50, 000 plants/ha) to 351.5 g/plant (90, 000 plants/ha). Generally, the average root yield was 55.7 t/ha, sucrose content 13.73% and white sugar yield 6.5 t/ha ; the highest root yield (62.4 t/ha), sucrose content (14.40%) and white sugar yield (7.8 t/ha) was achieved with 110, 000 plants/ha.

repa cukrovka ; rostlinná populace ; chrást ; bulva ; sušina ; průměr bulvy ; výnos a jakost

nije evidentirano