Nitrogen Credits From Peanuts Peanut Notes No. 41 2022
go.ncsu.edu/readext?856657
en Español / em Português
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.
Português
Inglês é o idioma de controle desta página. Na medida que haja algum conflito entre o texto original em Inglês e a tradução, o Inglês prevalece.
Ao clicar no link de tradução, um serviço gratuito de tradução será ativado para converter a página para o Português. Como em qualquer tradução pela internet, a conversão não é sensivel ao contexto e pode não ocorrer a tradução para o significado orginal. O serviço de Extensão da Carolina do Norte (NC State Extension) não garante a exatidão do texto traduzido. Por favor, observe que algumas funções ou serviços podem não funcionar como esperado após a tradução.
English
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 ▲Question:
We are looking at augmenting our sweet potato program behind peanuts considering today’s inflated fertilizer market. Fertilizer prices are astronomical and we are taking all considerations into play this season.
CURRENT PRACTICES:
- Our standard program is 28 gallons of 24%S Nitrogen applied between 1st and 2nd cultivation, generally 14-21 DAP.
- We do not harvest our peanut hay waste and it is incorporated into the soil during the first tillage pass.
QUESTION:
Would the peanut hay have any nutritional value that would allow us to lower our rate of 24S on the farms that are sweet potatoes behind peanuts?
Thanks a bunch for your time and considerations here!
Jordan Answer:
I thought I sent a reply earlier this week but cannot seem to find it in my e-mails. Sorry for the delay if you did not receive it. In the southeastern US and even lower mid-Atlantic states like NC, it appears there is very little if any N available from a legume like soybean or peanut for the following summer crops like sweetpotato, cotton, and corn. There is not enough to count on. Historically, N credits have been recommended (in the old literature) but in more recent work there is little contribution. We do see a positive contribution to small grains right after peanut harvest and that is a real N credit. But weather patterns (rain and relatively warm conditions in fall and spring – and some periods in winter) result in little to no N contribution remaining by the time you plant the summer crop. One can calculate the amount of N in hay and soil (roughly) right after peanut harvest, but it just does not remain in an available form or simply is not present by the time the summer crop is planted and moves through the cropping cycle. I wish I had better news. I know the 2022 crop is going to be expensive to grow.
I know a lot of sulfur is present in gypsum used on peanuts. But it is mobile and has likely moved through the soil profile and is present at the B horizon. Some of the sweetpotato soils have very deep A horizons, so I would not count on the sulfur from gypsum in peanuts being right where it needs to be for sweetpotato.