강황 유기재배에서 시비수준이 생육 및 수량과 토양화학성에 미치는 영향

다국어 초록 (Multilingual Abstract)

This study was carried out to examine the influences of fertilizer application levels on growth
and yield of organically grown turmeric.
Their average plant height was 129～148 cm, leaf numbers were 7.0～7.7 per plant, stem
number per hill was 3.1～5.1, stem diameter was 31～41 mm, and leaf color(SPAD value)
was 41～49. They showed peak growth rate in early to mid August.
On upland soil with high salt accumulation, skipping basal fertilization and using standard
amount of additional fertilizer showed no significant difference on turmeric growth. But it
showed tendency to increase at standard top dressing fertilizer application 1X and standard
fertilizer application 2X. There were no notable difference on the yield of turmeric caused by
the amount of additional 2fertilizer. T - N content, content of organic matter and content of
available phosphate of the soil decreased after the test, regardless of conditions. however, the
soil’s pH (1:5), exchangeable Ca and Mg, and cation exchange content (CEC) increased.
On paddy soil, growth rate of turmeric did not depend much on the amount of fertilizer,
but it increased at verification application fertilizer 2X to 2.5X compared to verification
application fertilizer 1.0X. however, The yield showed notable increase at verification
application fertilizer 2.0X compared to verification application fertilizer 1.0X. Ratio of fresh
weight to dry matter showed tendency to increase as the amount of fertilizer increased. After
the test, the soil’s T - N and content of organic matter did not changed significantly. The soil’s
pH(1:5), exchangeable Ca and Mg, and CEC decreased, but EC and available phosphate increased compared to the soil before the test. Curcumin content increased at verification
application fertilizer 1.0X to 1.5X compared to verification application fertilizer 2.0X or no
fertilizer at all.