บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Correlated effects of methods and dates of ploughing-in manure and of different postharvest and pre-winter tillage methods of light soil on yield of semisugar beet.

Krezel, R.;

Biuletyn Instytutu Hodowli i Aklimatyzacji Roslin Year: 1997 Issue: No. 202 Pages: 159-165 Ref: 5 ref.

1997

บทคัดย่อ

Correlated effects of methods and dates of ploughing-in manure and of different postharvest and pre-winter tillage methods of light soil on yield of semisugar beet.

The investigations were carried out in 1987-89 at the Agronomy Experimental Farm in Swojec near Wroclaw on soil containing 12% clay and 644 mg organic carbon/100 g. Semisugar beet variety Almamono was grown in stands of 75 000 plants per ha. Good yields were obtained when air temperature was low and rainfall was high. The highest yield of roots (53 t/ha) and sugar (8.59 t/ha) was obtained when farmyard manure together with stubble from the previous crop (cultivated following shallow ploughing) was ploughed-in deep in autumn using a plough with a coulter. Traditional tillage technology was less effective. Ploughing in the manure by plough with a coulter in comparison without a coulter increased root yields by 7.5% and sugar yields by 11%. The lowest root yield was obtained when autumn ploughing was not done.