Question

1. Chemical Fertilizations​

Answer 1

Answer:

Modern chemical fertilizers include one or more of the three elements that are most important in plant nutrition: nitrogen, phosphorus, and potassium. Of secondary importance are the elements sulfur, magnesium, and calcium.

Answer 2

Answer:

The term “chemical fertilizer” refers to any number of synthetic compound substances created specifically to increase crop yield. Some chemical fertilizers, for example, are “nitrogenous” — containing nitrogen — while others are phosphate-based. Other fertilizers are potassium.