AgroInsights- Regenerative Ag

September 21, 2023

Importance of Post-Harvest P & K in Permanent Crops

Rod Carlsen, California District Sales Manager


I heard a well-respected grower once comment that harvest is like the Super Bowl; hard work and dedication all season in the effort to optimize production and quality leads to the crop coming off. It’s the grand finale. While it’s easy to relate to the emotion and relief associated with finishing up a safe harvest season, it’s sometimes easy to neglect the fact for permanent crops, namely trees, and vines, the next season starts after harvest with post-harvest nutrition. 

 

Of course, there are also budgetary factors that can play into a grower’s decision as to whether to apply post-harvest nutrition or not. If the budget allows for post-harvest nutrition, it must be thought about in the long-term context. Most blocks of permanent crops are planted with the expectation they will remain viable for 25-30 years. In essence, being regenerative year in and year out is of paramount importance towards remaining economically viable in the long term. Furthermore, one could argue that blocks of young trees and vines may need post-harvest nutrition even more so than mature, established blocks when budgets are tight. Regardless of whether the permanent crop is non-bearing, in its productive prime, or near the end of its life, it all starts with healthy root systems. Healthy root systems rely heavily upon phosphorus (P) and potassium (K) for growth. A healthy root zone with a balanced carbon: nitrogen ratio (e.g., 8:1 – 12: 1) is also critical for microbial activity to solubilize soil resident P & K. During the post-harvest period of late summer-fall there are typically ample sunlight hours for photosynthesis to continue. With the presence of photosynthetically active leaves, in turn, the root system transports carbohydrate reserves to the remaining wood tissues (e.g., trunk, limbs, canes) to nurture the tree or vine, with nutrition when winter dormancy ceases next season.


NACHURS® has the highest quality liquid options for P & K in the business. A perfect product for a post-harvest application on permanent crops is NACHURS Triple Option®. The analysis of Triple Option is 4-13-17-1 sulfur. While most growers don’t want to stimulate too much post-harvest vigor with excess nitrogen, having a bit of nitrogen in the formulation is still a benefit for chlorophyll production in the active leaves. Additionally, the thiosulfate component (from which the sulfur in Triple Option is derived) is useful for enzymatic activities related to slowing down nitrification and minimizing nitrogen losses to the environment. The phosphorus in Triple Option is 100% orthophosphate form to maximize uptake efficiency (especially as soil temperatures decrease in the fall), and the potassium component includes NACHURS Bio-K®. Aside from being the most efficient source of potassium, the acetate ion in Bio-K is an anionic carrier and can help to move other critical plant nutrients into the wood tissue reserves for plant growth early next season. Consider an application of 3-5 gallons per acre of Triple Option and pairing it with 1-2 pints/acre of NACHURS® Rhyzo-Link® PE. The “PE” is for “phosphate efficiency,” and the two strains of Bacillus sp. (B. tequilensis and B. velenzensis) in Rhyzo-Link PE stimulate activity in the root zone to transform tied-up phosphorus into plant-available phosphate. 


At NACHURS®, we hope all our grower customers have a successful and SAFE harvest season, and to all our growers of perennial crops, don’t forget that next season starts with post-harvest P & K!



Contact your local NACHURS® rep or retailer for more information.


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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