Physico-chemical properties of soils from land used for soybean production in Fukuoka Prefecture
2016
Ishitsuka, A. (Fukuoka Agriculture and Forestry Research Center, Chikushino, Fukuoka (Japan)) | Odahara, K. | Kuroyanagi, N. | Fujitomi, S. | Araki, M. | Ishibashi, M.
In order to analyze physico-chemical properties of soils from land used for soybean production in Fukuoka Prefecture, we investigated 214 points in 2012 and 2013, compared the results and showed the influence on soybean yield performance. The results showed that for such land, there was a tendency for pH to be low, potassium and humus content to be low, and for bulk density to be heavy, thus it is thought that there is deterioration of physico-chemical properties. Negative correlation was seen between bulk density and soybean yield performance, and positive correlation was seen between potassium and soybean yield performance. It is considered that to improve soybean yield performance, it is first necessary to improve physico-chemical properties by applying organic matter to the soil. In addition, it is indicated for much production land with low pH and low potassium content, that it is important to maintain pH within an appropriate range and apply fertilizer to supplement potassium and other nutrients.
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