1、Foliar fertilization of soybean: Is it useful to supplement primary

A few Iowa experiments during the early to mid-1970s seemed to confirm this hypothesis by suggesting that spraying soybeans with a 10-1-3-0.5 N-P-K-S nutrient mixture between the R4 and R6 growth stages could increase yield up to 8 bu/acre.

2、Foliar Fertilization of Soybean at Early Vegetative Stages

This study evaluated soybean responses to foliar applications of a 3–8–15 (N–P–K) fertilizer at early vegetative stages in 48 trials conducted on Iowa soils that tested mostly optimum or above in P and K.

3、2003

Foliar fertilization at early stages of soybean growth could increase P and K supplies at the time when the root system is not well developed. Also, a small amount of foliar-applied N is not likely to inhibit N2 fixation and could increase plant development and grain yield.

The Impact of Foliar Fertilization on the Physiological

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.

Thinking about using foliar fertilizers in soybeans?

This article will focus on the question of whether using foliar-applied fertilizer products in soybeans can increase yield and profitability. Crops like soybeans obtain the bulk of their nutrients by extracting them from the soil as they take up water.

The Benefits of Soybean Foliar Fertilizer Application

A foliar application of boron should be applied no later than early flowering stages (R1 – R3) in order for the plant to benefit from that application. Nutrients such as potassium and manganese, however, are utilized by soybeans at many growth stages so the plant can benefit from a foliar treatment of those nutrients across a wider ...

What Fertilizer Is Best for Soybeans? For Maximum Yield

Generally, nitrogen fertilizers are applied at planting or as a side-dress during the early stages of growth. Phosphorus and potassium fertilizers can be applied at planting or as a pre-plant application.

When Is The Best Time To Foliar Feed Soybeans

During the flowering phase through to mass bean filling, the nutrient requirement peaks, whereby foliar boron should ideally be applied early in the flowering stages for maximum benefit.

THE INFLUENCE OF FOLIAR FERTILIZATION ON THE YIELD AND QUALITY TO SOYBEAN

Consequently, the response of soybean plants to foliar application of S and especially P during the flowering period entailed significant changes, especially in protein and essential fatty...

Use of Foliar Fertilizers for the Specific Physiological Management of

Based on the assumption that foliar fertilizers applied at specific times promote soybean growth, development and yield, the aim of the present study was to evaluate the biometric, biomass, physiological, nutritional and grain yield parameters to increase knowledge about specific fertilizers applied alone or in combination and at different ...

The early flowering stage of soybean is a critical phase in its growth cycle. During this period, soybean leaves begin to expand, and flowers start to form, marking a key stage for development. At this time, soybean’s demand for nutrients, particularly macroelements like nitrogen (N), phosphorus (P), and potassium (K), increases significantly. Selecting appropriate foliar fertilizers during this stage is essential for improving growth quality and yield.

Key Considerations for Selecting Foliar Fertilizers:

1. Nitrogen (N): Soybeans require substantial nitrogen during early flowering, as it is vital for protein synthesis, stem and leaf growth, and flower bud differentiation. Common nitrogen-based foliar fertilizers include urea, ammonium nitrate, and ammonium sulfate.

2. Phosphorus (P): Phosphorus promotes root development, flower bud differentiation, pollen formation, and disease resistance. It also enhances seed setting. Popular phosphorus-based options include potassium dihydrogen phosphate and superphosphate.

3. Potassium (K): Potassium strengthens soybean’s stress resistance, improves disease defense, prevents lodging, and boosts photosynthetic efficiency. Common potassium fertilizers are potassium sulfate and potassium chloride.

4. Micronutrients: Elements like boron (B), zinc (Zn), iron (Fe), and manganese (Mn) play roles in flower bud differentiation, seed setting, and yield. Micronutrient fertilizers include borax, zinc sulfate, and manganese sulfate.

5. Organic Matter: Organic fertilizers provide balanced nutrients while improving soil structure and water/nutrient retention. Examples include chicken manure, cow dung, and pig manure.

Practical Tips for Application:

1. Tailor to Growth and Soil Conditions:

   • For vigorous growth, prioritize nitrogen (e.g., urea).
   • For weak plants, emphasize phosphorus (e.g., superphosphate).

2. Concentration and Method:

   • Avoid overconcentration to prevent crop damage.
   • Spray uniformly on leaves, avoiding stems to reduce risk of harm.

3. Timing:

   • Apply between early flowering and full bloom, when nutrient demand is highest.

Optimizing foliar fertilizer selection during soybean’s early flowering stage requires considering growth status, soil conditions, and proper application techniques. By doing so, farmers can enhance soybean quality and yield, contributing to agricultural productivity.