1、Thinking about using foliar fertilizers in soybeans?

Numerous foliar fertilizer products have been trialed in the Michigan Soybean On-Farm Research program since 2011. Of the 132 site-years included in the studies, foliar fertilizers significantly increased soybean yield only 9% of the time.

2、Long

Continuous cropping of soybean causes soil degradation and soybean yield decline, but these effects could be alleviated by crop rotation or the use of long-term continuously cropped soybean systems.

3、The Impact of Foliar Fertilization on the Physiological Parameters

The application of basic mineral fertilizers in combination with foliar fertilization had a significantly positive impact on the quality indicators of soybean seeds. The highest yields were achieved when the foliar treatment was applied in the early pod formation stage.

4、Foliar fertilizers rarely increase yield in United States soybean

Results show that prophylactic foliar fertilization is likely to decrease the profitability of soybean production. Foliar fertilizer products tested in this study and similar products should not be recommended to U.S. soybean farmers in the absence of visual symptoms of nutrient deficiency.

Optimal Foliar Fertilization Methods for Soybean in Northeast China

To enhance soybean yield and quality, foliar fertilization is an effective approach. Below are detailed guidelines for optimizing foliar fertilization for soybean in this region:

Results of Foliar Fertilizer Application in Soybean

The conclusion: foliar fertilizer products, similar to those tested, are not recommended for use by North Dakota soybean producers in the absence of symptoms of nutrient deficiency. This research was conducted a part of the “Science for Success” project funded by the soybean checkoff.

Foliar Fertilizers Rarely Increase Yield in US Soybean

Foliar fertilizers did not change grain protein and oil concentration. Some tested prophylactic foliar fertilizers decreased profitability, and no tested products increased profitability. There is interest among farmers and agronomists to test different fertilizer products to improve soybean yield.

Effect of Foliar Treatment with Organic Acids and Inorganic Nutrients

In this study, we demonstrated that foliar application of 12 different inorganic nutrients and 5 organic acids altered the secondary metabolite profile of soybean leaves and enhanced heat stress tolerance and soybean yield.

Long term co

We demonstrated that long-term BCAF enhances soybean photosynthesis under continuous planting, reduces fertilizer use and increases yield. This study reveals a novel way and theory to sustainably increase soybean productivity. © 2023 Society of Chemical Industry.

Is foliar fertilization essential for high soybean yields?

Aiming to verify the effect of foliar fertilizer application to soybean crops in different regions of Brazil, an experiment was carried out in soybean commercial crops in the states of Paraná and Mato Grosso do Sul.

Continuous cropping soybean is a common agricultural crop. Due to prolonged cultivation in the same plot, soil nutrients tend to deplete, leading to poor growth. To enhance the yield and quality of continuous cropping soybean, selecting appropriate foliar fertilizers is critical. Below are some recommendations:

1. Nitrogen Fertilizers: Nitrogen is an essential nutrient for plant growth and plays a vital role in promoting the development of continuous cropping soybean. During the growth period, applying foliar fertilizers rich in nitrogen, such as urea or ammonium nitrate, can provide necessary nitrogen to stimulate root development, improve stress resistance, and increase yield.

2. Phosphate Fertilizers: Phosphorus is indispensable for plant growth, influencing photosynthesis, respiration, cell division, and differentiation. Using phosphate-rich foliar fertilizers like superphosphate or potassium dihydrogen phosphate during the growth stage promotes root development, enhances disease resistance, and boosts productivity.

3. Potassium Fertilizers: Potassium is crucial for plant growth, impacting development, photosynthesis, respiration, and cell wall formation. Applying potassium-rich foliar fertilizers such as potassium sulfate or potassium chloride strengthens roots, improves disease resistance, and increases yields.

4. Micronutrients: Microelements like iron, manganese, copper, zinc, boron, and molybdenum play specialized roles in plant growth. Supplementing with micronutrient-based foliar fertilizers (e.g., iron sulfate, manganese sulfate, copper sulfate, zinc sulfate, boric acid) enhances disease resistance, supports root development, and improves stress tolerance.

5. Compound Fertilizers: To meet the nutritional needs of soybeans at different growth stages, compound fertilizers containing nitrogen, phosphorus, and potassium can be selected. Follow the recommended dosage on product labels to avoid overapplication, which may cause nutrient waste or adverse effects.

6. Application Methods: Timing and technique matter. The optimal spraying window is during the early growth phase (e.g., 7–10 days after sowing), when plants enter a rapid growth phase and absorb nutrients efficiently.

7. Precautions:

   • Choose fertilizers based on soil and plant conditions.
   • Adhere to recommended dosages to prevent overuse.
   • Ensure even spraying for full coverage.
   • Avoid application under harsh conditions (e.g., extreme heat or humidity).
   • Monitor plant responses and adjust strategies if abnormalities arise.

By applying foliar fertilizers rationally, continuous cropping soybean can receive adequate nutritional support, fostering healthy growth and higher yields. For sustainable agricultural practices, combine these measures with crop rotation, scientific soil management, and pest control.