night soil. these ancestral agricultural practices gave carbon—broken-down organic matter—back to the soil while delivering nitrogen (n), phosphorus (p), and potassium (k) as well. with the advent of chemically-synthesized fertilizers, however, using only solid organic matter fertilizers has fallen by...
seven years. eliminate the three worst years to exclude exceptional or catastrophic circumstances. estimate the yield goal using the average of the previous best four years. in circumstances where or years yield data is not available, it is also possible to average the previous three years and multiply by...
(july ) ( learn how and when to remove this template message ) yerba mate , coffee , and tea (left to right) are used to create caffeinated infusions infusion is the process of extracting chemical compounds or flavors from plant material in a solvent such as water, oil or alcohol , by allowing the material...