The title is "Gin no Saji ~Silver Spoon~" and it's about a school life at an agricultural high school in Hokkaido.
According to Weekly Shonen Sunday magazine, Arakawa Hiromu will start a new manga series from the volume 19 to be released on April 6th. Details of the manga will be announced later.
Sunday's other new line-ups Mitsuda Takuya's new boxing manga was also announced to start on March 16th.
New pokemon manga "Pocket Monster RéBURST" will start on March 9th.
ref. Comparison of the top 3 Weekly Shonen Manga Magazines: The number of copies printed (2008 - 2010)