By Dr. Wes Chun Ph.D
Chief Science Officer, Grower's Secret

Phosphorus, like nitrogen, is a member of the pnictogen group and was the thirteenth element to be discovered and the first element that was chemically discovered by Hennig Brand in 1669. It is one of the three major essential elements needed by plants simply because of the amounts that are utilized by the plant. Phosphorus is the only element that was discovered through a disgusting process involving the concentration of urine. 

Ferti-Facts: Nitrogen - A Change in Tradition

 Introduction

Daniel Rutherford discovered the existence of nitrogen by first depleting oxygen from air. He accomplished this by asphyxiating a mouse in a closed jar, burning a candle until it went out in the jar, and burning phosphorus until it would not burn. The remaining gas was passed through a carbon dioxide absorbing solution.     The remaining gas (which is now almost pure nitrogen gas) did not support the burning of a candle or life of a mouse. He referred to this gas as noxious or phlogisticated air (Phlogiston was a postulated element that was released from combustible bodies when burned).

Introduction

The element calcium (Ca) is the fifth most abundant element in the earth’s crust and the third most abundant metal after iron and aluminum. It is a Group 2 member of the Periodic table. Calcium along with magnesium, beryllium, strontium, radium, and barium, are known as alkaline earth metals. These metals react with other chemicals at standard temperature and pressure, usually with an overall release of energy. In plants calcium is an essential secondary macronutrient, needed in moderate amounts and is rarely limiting in crop production.