Livres associés

The utility of sulphate of ammonia in agriculture.

A tribute to Levi Stockbridge, professor of agriculture in the Massachusetts agricultural college from 1871 to 1882, and president of the college from 1880 to 1882.

Talks on manures : a series of familiar and practical talks between the author and the deacon, the doctor, and other neighbors, on the whole subject of manures and fertilizers

Some observations on manuring with bone-dust.

• How crops grow A treatise of the chemical composition, structure, and life of the plant, for all students of agriculture ...
  Auteur(s): Johnson, Samuel W.
• How crops grow. A treatise on the chemical composition, structure and life of the plant, for students of agriculture. With numerous illustrations and tables of analyses.
  Auteur(s): Johnson, Samuel W.
• Agricultural chemistry--soil-analysis.
  Auteur(s): Johnson, Samuel W.