国立研究開発法人 国際農林水産業研究センター | JIRCAS

SATREPSマダガスカルプロ課題3「施肥と育種素材を統合した養分利用に優れた局所管理技術の開発」におけるイネ生育調査

報告書番号 出張年月 国名 関連プログラム 公表年月日
H31-0420 2020年2月-2020年3月 マダガスカル 農産物安定生産 2020年3月25日

成果の概要

On-farm cultivation tests were started to verify the differences in the P-dipping effect between the fields in a total of 20 farmer fields with different phosphorus fixing capacities of soils. To clarify the effect of P-dipping on the early growth of rice, plant samples at 60 days after transplanting were collected from 12 selected hills per plot for further shoot analysis. Moreover, canopy photos collected at weekly interval by counterparts were analyzed to assess the P-dipping effect on the development of canopy coverage compared with other treatments. The results of the canopy analysis and biomass sampling highlighted that P-dipping accelerates early growth of rice compared to conventional P application and farmer practices, but the growth rate varies depending on the transplanting times and field conditions. Collected shoot biomass samples were prepared for further analysis of P concentration and P uptake by plant.

マダガスカル