Following the resignation of Yoshinobu Shimamura , Iwanaga became Agriculture Minister on August 11 , 2005 . On August 11 , 2005 , Iwanaga became Minister of Agriculture following the resignation of Yoshinobu Shimamura .
Berikutan peletakan jawatan Yoshinobu Shimamura, Iwanaga menjadi Menteri Pertanian pada 11 Ogos 2005. Pada 11 Ogos 2005, Iwanaga menjadi Menteri Pertanian berikutan peletakan jawatan Yoshinobu Shimamura.