1、The Impact of Foliar Fertilization on the Physiological Parameters

The main purpose of the study was to identify the suitable stages of foliar application in soybean cultivation for effective vegetative development, yield, and quality purposes.

2、Optimal timing for foliar nutrition in soybean

Best timing in all locations was spraying the Multi-K at pod initiation. In ¾ of the cases 6% produced best results. In one location 3% Multi-K was even better. The result obtained in Murphy is statistically very significant (P0.01), and the mean of all locations is significant (P0.05).

3、Fungicide, insecticide, and foliar fertilizer effect on soybean yield

Finding the right maturity group (MG) for the area is key to reaching full yield potential and maintaining seed quality. In addition to variety selection, planting date can also slightly influence the seed-filling period.

4、Optimum Timing of Foliar Nutrient Sprays

For an optimum yield response to foliar fertilization it is possible that the optimum growth stage of the plant for the timing of foliar nutrient sprays does not necessarily fall within the recommended time interval as dictated by pesticide spraying.

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

Many Iowa fields require phosphorus (P) and potassium (K) fertilization for optimum soybean production. Suggested application rates, when required and based on soil testing, are fairly large amounts.

2003

The opportunities for applying nutrients foliarly to soybeans include (1) early season (V4 to V6) applications of a complete fertilizer; (2) the application of a complete fertilizer during podfill (R2 to R5); and (3) the application of micronutrients during the vegetative stages of growth.

When to Apply Fertilizer to Soybeans? Maximizing Crop Yield

In this article, we will delve into the intricacies of fertilizer application timing for soybeans, exploring the current context, best practices, and expert insights to help farmers make informed decisions.

When To Spray Foliar Feed On Soybeans

The optimal timing for foliar nutrient applications is before the first bloom, with a second application recommended 10-14 days later. To enhance the success of these applications, utilizing banded application techniques is advised during the early growth phases, from planting through 2-3 weeks post-emergence.

Early Season Foliar Fertilization of Soybeans

The objective was to evaluate the grain yield response of soybean to early season foliar fertilization. Most soybean varieties used were glyphosate resistant.

Effect of Irrigation and Fertilization on Soybean Growth and Yield in

Optimal fertilization levels, particularly nitrogen, phosphorus, and potassium, were crucial for maximizing yield in arid regions under drip irrigation. Supplemental irrigation during the reproductive stage significantly improved growth and yield in temperate humid climates.

Applying foliar fertilizer after herbicide spraying is an effective approach to enhancing crop yield and quality. Proper timing maximizes fertilizer efficacy and promotes healthy plant growth. Below is a detailed analysis of the optimal timing for foliar fertilization after herbicide application in soybean fields:

I. Timing of Herbicide Application

1. Pre-Spray Preparation: Before herbicide application, tillage should be conducted to improve soil aeration and looseness, ensuring even distribution and penetration of the herbicide. Additionally, remove weeds from the field to avoid interference from other plants or weeds during spraying.

2. Application Timing: The optimal spraying time depends on the soybean growth stage. Generally, soybean responds differently to herbicides during the seedling stage, branching stage, and flowering-pod-formation stage.

   • Seedling Stage: Effective for preventing weed growth.
   • Branching and Flowering-Pod-Formation Stages: Helps control weed populations. Adjust spraying schedules according to the specific growth stage of soybean.

3. Dosage and Method: Follow herbicide instructions and soybean growth conditions to determine dosage and application method. Adhere to the principle of "smaller doses, more frequent applications" to avoid overuse, which may cause phytotoxicity or waste. Ensure uniform coverage by spraying thoroughly across the entire area.

II. Timing for Foliar Fertilization

1. Recovery Period After Herbicide Application: Herbicides may temporarily damage plants (e.g., yellowing leaves, slow growth). Applying foliar fertilizer within 24–48 hours after spraying promotes recovery and stress resistance.

2. Fertilizer Selection: Choose appropriate foliar fertilizers based on plant needs. Common options include:

   • Urea: Provides nitrogen for growth.
   • Potassium Dihydrogen Phosphate (KH₂PO₄): Supplies phosphorus and potassium to enhance disease resistance.

3. Application Method: Use a sprayer to evenly apply fertilizer onto leaves, avoiding direct contact with stems to prevent phytotoxicity. Maintain proper distance and angle to ensure full absorption.

III. Key Considerations and Recommendations

1. Avoid Overlapping Applications: Do not apply herbicides and foliar fertilizers simultaneously, as this may reduce effectiveness. Allow at least one day between herbicide and foliar fertilizer applications.

2. Monitor Plant Response: Observe soybean growth closely after fertilization. Adjust strategies if abnormalities (e.g., stunted growth) occur.

3. Balanced Fertilization: Combine foliar fertilizers with other nutrients as needed. For example:

   • Apply nitrogen after herbicides to boost growth.
   • Use phosphorus before herbicides to improve disease resistance.

The optimal timing for foliar fertilization after herbicide application is 24–48 hours post-spray. Adjust timing based on soybean growth stages and weather conditions. Select appropriate fertilizers and concentrations, and use correct application methods. With proper management, soybean health and yield can be significantly improved.