1 It is aluminum potassium sulfate. 2  This is the type of alum that you find in the grocery store for pickling and in baking powder. 3  It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles. 4  It's chemical formula is KAl(SO 4) 2. It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles. 2  It's chemical formula is KAl(SO 4) 2. 3  Soda Alum. 4  Soda alum has the formula NaAl(SO 4) 2 Â·12H 2 O. It is used in baking powder and as an acidulent in food.
They were always creating new methods to increase their crop yields. Methods that they used included the building of terraces, irrigation and fertilization. Principle crops of the Aztecs were corn, beans, peppers, avocados, and tomatoes. Anthropology studies have also determined that the Aztecs also grew flowers for ceremony and decoration.
Aztec farming has become most famous because of the brilliant chinampas system that Aztec farmers used. Certainly there were a number of techniques used in the Aztec empire.But with the great city of Tenochtitlan built on swampy but rich ground, the chinampas became key to the food production of the people.hinampas and other forms of Aztec agriculture actually come from the days before the Aztec empire. Chinampas farming was begun in Xochimilco and Chalco, and was probably quickly adapted by the Aztecs as these people became part of the empire.