Influence of Ammonium Sulfate Fertilizer Recovered through Ammonia-collecting Equipment on Growth and Yield of Forage Rice

Morita Masayuki, Isikawa Megumi, Yoshida Norio, Horiguchi Kenichi, Takahashi Toshiyoshi

doi:10.14941/grass.58.166

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Other Title

吸引通気式堆肥化システムで回収した硫安液肥が飼料用イネの生育および収量に与える影響
キュウインツウキシキタイヒカシステムデカイシュウシタリュウアンエキヒガシリョウヨウイネノセイイクオヨビシュウリョウニアタエルエイキョウ

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Abstract

Forage rice production has increased in the rice fields in Japan. In addition, ammonia-collecting equipment has recently been developed. Liquid ammonium sulfate fertilizer (LASF) is produced through a system involving chemical cleaning (by sulfuric acid) and ammonia volatilization from compost. This study aimed to investigate the effectiveness of LASF top-dressing for forage rice. The tested rice varieties included 'Haenuki', 'Fukuhibiki', and 'Bekoaoba'. We assigned the varieties to 4 types of top-dressing treatments :1) Conventional method-chemical fertilizer, 3 kgN/10 a (CF); 2) Small amounts of fertilizer-LASF, 3 kgN/10 a (SF); 3) Moderate fertilizer-LASF, 6 kgN/10 a (MF); and 4) Large amounts of fertilizer-LASF, 9 kgN/10 a (LF). Through these treatments, the leaf color in the LF group was approximately 50% brighter than that of the CF group (p < 0.05). Plant length, the stem number and culm length in the MF and LF groups tended to show higher values than those in the CF and SF groups. Moreover, in top dry weight and crude brown rice production, MF and LF groups showed approximately 15 % higher yield than the CF and SF groups. Therefore, LASF is a suitable topdressing treatment for forage rice, and MF is suggested to be the most effective rate of application.

Journal

Japanese Journal of Grassland Science

Japanese Journal of Grassland Science 58 (3), 166-172, 2012

Japanese Society of Grassland Science

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