Nutrient Needs of the Soybean and Cotton Crops

Website Editor • July 31, 2017

As the growing season progresses, there is a need to monitor the nutrient needs of the growing crop.   Both soybean and cotton industry researchers have recently identified a few of these reasons.  I have included short summaries below. There are many reasons to continue to ensure your crop is receiving adequate fertility as it matures.    Soybeans: A recent article in Agronomy Journal reported that soybean yields may be increased with late season foliar applications of nitrogen.  It states that high yielding beans have a greater demand for nitrogen to fill the seed pods than what they are capable of fixing biologically.  The rhizobia in the soil decrease nitrogen production exponentially as the pods begin to form, therefore additional foliar nitrogen is commonly beneficial. Research has indicated that Foliar N was efficient at improving yields. With approximately 55% of the U.S. crop setting pods as of last week, decision making time is upon us.  Products such as NACHURS SRN® or NACHURS N-Rage® Max may be applied alone or in conjunction with pesticides (fungicides, insecticides, etc.) at crop stage R1-R3 at a rate of 1 to 2 gallons/ acre to help soybeans achieve their complete yield potential.    Cotton: Cotton fields in much of the South are experiencing browning or bronzing of the foliage.  Various fungal pathogens are blamed for the damage.  However, according to researchers these pathogens are most likely secondary problems that are caused by “non-pathogenic stresses” – which means nutrient deficiencies, especially potassium.  Potassium, phosphorous, and nitrogen are mobile within plants and are transported to the parts of the plants with the most demand.  In a crop with heavy boll load, these mobile nutrients will be translocated from the leaves to the developing bolls and causes nutrient deficiencies in the leaves and can lead to secondary pathogen infections discussed above. If we allow the condition to persist as the crop matures, there is not much that can be done to remedy the situation.  However, in areas where the cotton crop is still developing, producers should be aware that potassium movement from the soil into the plant decreases significantly as the cotton nears peak bloom, leaving foliar applied potassium as the best method of application during and after that time. Products such as NACHURS playmaKer®, NACHURS Triple Option®, and/or NACHURS K-fuel® should be applied alone or in conjunction with other crop protection applications at early to peak bloom at a rate of 1 to 2 gallons/acre. 

As the growing season progresses, there is a need to monitor the nutrient needs of the growing crop.   Both soybean and cotton industry researchers have recently identified a few of these reasons.  I have included short summaries below. There are many reasons to continue to ensure your crop is receiving adequate fertility as it matures. 

 

Soybeans :

A recent article in Agronomy Journal reported that soybean yields may be increased with late season foliar applications of nitrogen.  It states that high yielding beans have a greater demand for nitrogen to fill the seed pods than what they are capable of fixing biologically. 

  • The rhizobia in the soil decrease nitrogen production exponentially as the pods begin to form, therefore additional foliar nitrogen is commonly beneficial.
  • Research has indicated that Foliar N was efficient at improving yields.


With approximately 55% of the U.S. crop setting pods as of last week, decision making time is upon us.  Products such as NACHURS SRN ® or NACHURS N-Rage ® Max may be applied alone or in conjunction with pesticides (fungicides, insecticides, etc.) at crop stage R1-R3 at a rate of 1 to 2 gallons/ acre to help soybeans achieve their complete yield potential. 

 

Cotton :

Cotton fields in much of the South are experiencing browning or bronzing of the foliage.  Various fungal pathogens are blamed for the damage.  However, according to researchers these pathogens are most likely secondary problems that are caused by “non-pathogenic stresses” – which means nutrient deficiencies, especially potassium. 

  • Potassium, phosphorous, and nitrogen are mobile within plants and are transported to the parts of the plants with the most demand.  In a crop with heavy boll load, these mobile nutrients will be translocated from the leaves to the developing bolls and causes nutrient deficiencies in the leaves and can lead to secondary pathogen infections discussed above.
  • If we allow the condition to persist as the crop matures, there is not much that can be done to remedy the situation.  However, in areas where the cotton crop is still developing, producers should be aware that potassium movement from the soil into the plant decreases significantly as the cotton nears peak bloom, leaving foliar applied potassium as the best method of application during and after that time.


Products such as NACHURS playmaKer® , NACHURS Triple Option® , and/or NACHURS K-fuel® should be applied alone or in conjunction with other crop protection applications at early to peak bloom at a rate of 1 to 2 gallons/acre. 


December 12, 2024
We are at the point in the year where things are slowing down around the farm and it is time to reflect on the season to remind ourselves what we learned. Over the last couple of weeks, the District Sales Managers and I have spent some time reflecting on what worked well in the field and the challenges we faced too. Here are the top 5 things we learned from 2024 growing season: #1 Split applying Nitrogen and Sulfur is a practice that should be embraced on a yearly basis when growing corn. Do you remember how the planting season started and what happened in the first 60 days after the planters started rolling? Our field conditions started out dry with some areas of the corn belt showing up on the drought map. Then mother nature blessed us with rain that never stopped in some areas making it difficult to finish planting. Growers that had split applied their Nitrogen and Sulfur were able to avoid nutrient loss from the rain but also apply the nutrients when the crop needed it most. In the end yield was better on split applied nitrogen fields compared to fields that had all the N applied in the fall or spring before planting. #2 For the past 2 seasons in the North region, we have seen the benefits of adding NACHURS Humi-Flex FA to the in-furrow starter fertilizer. NACHURS Humi-Flex FA is our fulvic acid and it is becoming a valuable component in our starter fertilizer for many reasons. We are using it to chelate the nutrients in the starter fertilizer especially phosphorus. Humi-Flex FA also buffers the soil pH to neutral in that nutrient band keeping nutrients available in fields that have less then optimal pH for crop growth. Finally, we use Humi-Flex FA to create a healthy soil microbiome that leads to more root mass and nutrient uptake. #3 Nutrient uptake charts for corn and soybeans have been a great tool for our team to help our customers visualize the crops nutrient needs based on timing during the growing season.
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Wayne Becker, District Sales Manager & Agronomy Specialist Blending two NACHURS products (Triple Option® and Balance®) at a 1:1 ratio has proven to jump start soybeans and increase profitability. Many farmers would like to use in-furrow starter fertilizer with their beans but are uncertain of the benefits. When beans are first planted early growth is very important. • It is a race against time between soybeans and weeds, fighting for water, sunlight and nutrients. • The quicker a canopy is established, the less weeds are able to steal resources, which could affect yield potential. Traditional In-furrow fertilization of beans is usually not as easy to visually observe as when it is applied to corn or wheat. However, that does not mean that they are not extremely important. This treatment will provide early season fertility that will help the young crop remain strong and vibrant, enabling them to better deal with stresses like insects, drought or water logging. NACHURS liquid fertilizer has been providing the best in-furrow fertilizer treatments for 75+ years. With NACHURS in-furrow, producers have always been able to safely provide the traditional benefits without decreasing germination because of the fertilizer’s low-salt content and superior availability. New focus on plant and soil health has raised the bar even higher. The NACHURS Bio-K® line of fertilizers is the most available source of K on the market, yet it also promotes both soil and plant health. Because the Bio-K fertilizer is a carbon molecule combined with potassium, applying it in-furrow provides beneficial soil microbes with a food source. This enables microbes to increase nutrient availability – for all types of crops. Legumes use Rhizobia to “fix” their own nitrogen. NACHURS has developed a product specially designed to stimulate early development of these important soil microbes. It is called Balance®. We combine the rhizobia stimulating qualities of Balance with Triple Option which maximizes quantity of other nutrients. The result is improved potential for early season growth and greater profitability of soybeans
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