Johann Friedrich Mayer (agriculturist)

**Biography and Background**:
– Born in Bad Mergentheim to an innkeeper and Schultheiß.
– Studied at the University of Jena under Christian Wolff and Albrecht von Haller.
– Served as a Protestant pastor in Riedbach and later in Kupferzell.
– Conducted agricultural experiments and published findings on gypsum as fertilizer.
– Published journals and advised on farming practices.

**Contributions to Agriculture**:
– Considered a key agricultural reformer of the late 18th Century.
– Advocated sustainable agricultural practices and free property for peasants.
– Played a crucial role in increasing agricultural productivity to feed the growing population.
– Promoted the use of fertilizer, new crops like potatoes, and advanced management methods.
– Emphasized the importance of crop rotation and innovative farming techniques.

**Innovations and Discoveries**:
– Advocated for the use of crushed gypsum as a field fertilizer.
– Introduced new crop rotation methods.
– Described agriculture in the Hohenlohe region in his 1773 textbook.
– Proposed innovative farmhouses design and heating systems.
– Recommended planting clover for additional fodder and improved cattle sales.

**Legacy and Influence**:
– Influential figure in advancing agricultural practices in the late 18th Century.
– Known for promoting sustainable farming methods and innovative techniques.
– Recognized for advocating for peasant land rights and agricultural productivity.
– His work on gypsum as a manure had a significant impact on agricultural practices.
– Remembered as the ‘Apostle of gypsum from Kupferzell’ for his contributions to agriculture.

**Publications and References**:
– Authored influential publications on agriculture and husbandry, such as ‘Lehre vom Gyps als vorzueglich guten Dung’ in 1768.
– Collaborated with experts like Albrecht Daniel Thaer on publications about agricultural practices.
– Various scholars have studied Mayer’s life and contributions to agriculture.
– His writings contributed significantly to the advancement of agricultural knowledge and practices.
– References to Mayer’s work can be found in historical texts and academic literature.