Skip to main content

NC State Extension

Fertility – Reducing Fertilizer Costs

en Español

El inglés es el idioma de control de esta página. En la medida en que haya algún conflicto entre la traducción al inglés y la traducción, el inglés prevalece.

Al hacer clic en el enlace de traducción se activa un servicio de traducción gratuito para convertir la página al español. Al igual que con cualquier traducción por Internet, la conversión no es sensible al contexto y puede que no traduzca el texto en su significado original. NC State Extension no garantiza la exactitud del texto traducido. Por favor, tenga en cuenta que algunas aplicaciones y/o servicios pueden no funcionar como se espera cuando se traducen.

English is the controlling language of this page. To the extent there is any conflict between the English text and the translation, English controls.

Clicking on the translation link activates a free translation service to convert the page to Spanish. As with any Internet translation, the conversion is not context-sensitive and may not translate the text to its original meaning. NC State Extension does not guarantee the accuracy of the translated text. Please note that some applications and/or services may not function as expected when translated.

Collapse ▲
  1. Use UAN products, such as 30 percent or 24S, for at least the side-dress application if not the entire nitrogen program.
  2. Apply no more phosphorus than recommended from the soil test. Over 90 percent of the soil test reports from tobacco fields in the coastal plain and 50 percent from fields in the piedmont recommended that fertilizer phosphorus not be applied. Growers reluctant to not apply any phosphorus can apply 5 pounds of phosphorus in the transplant water, which has been shown to equal the growth response of 40 pounds of phosphorus banded in the complete fertilizer (Figure 5-1).
  3. Based on current fertilizer prices, the most economical program involves the application of a potash material, such as potassium sulfate or potassium magnesium sulfate (or blend), to supply all of the potassium suggested by the soil test report and a UAN product to supply all of the nitrogen (Table 5-1). If soil phosphorus levels are high to very high, then no more than 5 pounds of phosphorus in the transplant water is sufficient to provide rapid early-season growth.
  4. Avoid products that add cost without improving profitability. For example the product Avail has been shown—under limited soil phosphorus conditions outside of the tobacco production region in North Carolina—to improve phosphorus uptake. However, phosphorus levels in most of our tobacco fields are very high. Studies conducted during 2008 showed no advantage of including Avail in the fertilizer for tobacco produced in fields with typical soil phosphorus levels
Page Last Updated: 1 decade ago
Was the information on this page helpful? Yes check No close