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」に参画するアウン　ゾー　ウー主任研究員が、リン浸漬処理技術と品種特性との相互作用解明のための圃場試験の生育収量調査のため、４月中旬から５月下旬までマダガスカルに出張しました。

Aiming to improve further the localized P-dipping effect on rice growth and grain yield, we evaluated the interaction effect of P-dipping and rice genotypes with different root system architecture in farmers’ fields in two rice-growing regions of Madagascar. Field observations and visual assessments were conducted at both study sites with local counterparts, and field harvesting, and sampling were performed sequentially from early maturing plots using P-dipping. To further elucidate the underlying mechanism of the interaction effect between the P application and the rice genotypes, the collected soil solution and root samples from different soil layers were analyzed at LRI, Antananarivo University, during the mission.