N-P-K

Fertilizer and other agricultural chemicals only have to report their N-P-K (nitrogen, phosphorus, potassium) content so we have no idea what\'s been put on the fields where our food is grown. '

OpEdNews - Quicklink: Coal Ash On Our Fields 2009

N-P-K, the first acronym we learn in agricultural education.

Farming in Space Stephen D. Covey 2009

Fertilizer and other agricultural chemicals only have to report their N-P-K (nitrogen, phosphorus, potassium) content so we have no idea what's been put on the fields where our food is grown.

OpEdNews - Quicklink: Coal Ash On Our Fields 2009

The numbers on a fertilizer bag, in N-P-K order, indicate the percentage of nitrogen, phosphorous, and potassium, respectively, on a weight basis.

Tip of the Day: Fertilize your lawn this fall 2008

Many factors influence how much nitrogen is applied and used, including soil moisture, timing of fertilizer application, labour availability, inherent soil quality and type, farming systems, and major macro-nutrient availability (N-P-K) (see Chapter 3).

Global Environment Outlook (GEO-4)~ Chapter 8 2008

The numbers on a fertilizer bag, in N-P-K order, indicate the percentage of nitrogen, phosphorous, and potassium, respectively, on a weight basis.

Tip of the Day: Fertilize your lawn this fall 2008

Shift to complete fertilizer (N-P-K) starting on the 4th year by applying 500 9 per tree twice a year.

Chapter 23 1992

Water with a liquid fertilizer solution containing N-P-K plus micro-nutrients.

Chapter 25 1990

The crop can be tissue-tested while growing in the field for N-P-K levels in the sap.

Chapter 9 1981

If no soil test results are available for a farmer's field, a reasonable estimate of N-P-K needs can be made based on at least four or more of the following criteria:

Chapter 9 1981