To cultivate Japanese buckwheat, Tartar buckwheat, etc. even with soil pH (H20) of 5.5-8.5 as long as the temperature is 18-26°C when flowering, and to attain rotation cultivation with sugar canes and sweet potatoes which are staple crops of Okinawa Prefecture.
At least one crop selected from a polygonaceae buckwheat family such as Japanese buckwheat and Tartar buckwheat is cultivated in soil with soil pH (H20) adjusted to 5.5-8.5 after adding, to the soil, alkaline earth metal comprising calcium and magnesium, or in soil that shows soil chemical properties of soil pH (H20) of 5.5-8.5, at a temperature of 18-26°C when flowering, and buckwheat flour and buckwheat grains are produced and used as a raw material for confectionery, bread, buckwheat Shochu (distilled spirit) or Miso (fermented soybean paste). Rotation cultivation with sugar canes and sweet potatoes can also be attained.
| JPH07227144A | 1995-08-29 | |||
| JP2003192513A | 2003-07-09 |
JPN6012021153; 前里 和洋: ''暗赤色土（島尻マージ）における土壌蓄積リンの利用に関する研究'' Ｔｈｅ Ｃｒｏｐ Ｓｃｉｅｎｃｅ Ｓｏｃｉｅｔｙ ｏｆ Ｊａｐａｎ ６８巻（別２号）, 1999, ｐ．１６２-１６３
JPN6012021157; 塩野 隆弘: ''ソバ栽培導入による営農的赤土流出軽減対策'' 農業農村工学会全国大会講演要旨集 発表番号 （６-５４）, 2007, ｐ．８２０-８２１
JPN6012021144; 原 貴洋: ''南西諸島冬季の短日環境における普通ソバ（Ｆａｇｏｐｙｒｕｍ ｅｓｃｕｌｅｎｔｕｍ Ｍｏｅｎｃｈ）の農業関連形質の品種間差違'' Ｊａｐａｎｅｓｅ Ｊｏｕｒｎａｌ ｏｆ Ｃｒｏｐ Ｓｃｉｅｎｃｅ ｖｏｌ． ７７， ｎｏ． ２, 2008, ｐ．１５１-１５８