For more than a hundred years, more mixtures of fertilizer have been sold in the United States, where the mixture industry is more widespread than any other country.
There has been a wide range of needs for crops and soils, so different mixtures of fertilizers have been developed over the years, but often more than the real need. However, in 1971-72, there were about 200 varieties, accounting for 80% of total consumption in tonnes.
Although nitrogen and phosphorus and potassium mixtures were increased, nitrogen and total potassium added as mixtures decreased, especially for nitrogen, with increased emphasis on the direct addition of nitrogen and the farmer's conviction that the process was economical.
The total quantities of nutrients in mixtures and materials will continue to increase. Fertilizers are faster than mixtures in the light of research that proves the importance of adding nutrient to poor soil to that element as needed.
There has been a wide range of needs for crops and soils, so different mixtures of fertilizers have been developed over the years, but often more than the real need. However, in 1971-72, there were about 200 varieties, accounting for 80% of total consumption in tonnes.
Although nitrogen and phosphorus and potassium mixtures were increased, nitrogen and total potassium added as mixtures decreased, especially for nitrogen, with increased emphasis on the direct addition of nitrogen and the farmer's conviction that the process was economical.
The total quantities of nutrients in mixtures and materials will continue to increase. Fertilizers are faster than mixtures in the light of research that proves the importance of adding nutrient to poor soil to that element as needed.
