1、NPK foliar spray dose in potato crop – AgriBot

Adequate potassium levels can enhance potato tuber quality, size, and resistance to abiotic stresses. Recommended foliar spray dosage is typically around 0.3-0.6% concentration, starting from tuber initiation until the end of the bulking stage.

2、Potato Fertilizer Schedule

An N:P 2 O:K 2 O ratio of 2:1:3* is recommended, as pre-plant application. This application will take care of the nutritional requirement of the plot for the entire growth season. Multicote™ Agri granules should be incorporated into the soil, 10cm deep and 10cm away from the planting row.

3、Effects of foliar fertilization with potassium and micronutrients on

Spraying foliar fertilizer directly affected the growth and chemical content of the plant, which depends on different foliar fertilizers. Ascomycota and Moraxella were the dominant fungal...

4、Nitrogen fertilizer rate and timing of application for potato under

Several studies in the last 10 years have optimized the N fertilizer timing of application and rate for potato under seepage irrigation.

Recommendations for foliar feeding of potatoes

Foliar feeding of potatoes at different stages of growth and development. Calculation of the optimal amount of fertilizer application.

Guide to Foliar Fertilization: Best Practices, Dosages, and Benefits

Foliar fertilizers are absorbed quickly— within 15 minutes to a few hours, depending on the nutrient. For instance, calcium foliar sprays can be absorbed and translocated throughout the plant within minutes.

Application of different foliar iron fertilizers for improving the

In this study, a 2-year (2020–2021) field trial was designed.

Potatoes

Interim recommendation: Recent research results have found that potato yield increased with increasing fertilizer P rates in soils with initial M-3 index values above the current UF/IFAS “high” index level indicating further calibration is needed for a recommendation of no fertilizer P application.

Effect of Foliar Micronutrients Application on Potato Cultivation

The alternative approach is the application of Zn nutrients to plant leaves and stems through foliar fertilization. In this context, a recent study recommends foliar application of Zinc @ 30 ppm due to its contribution towards the increased superiority in yield and quality of potato.

Growing Potatoes

Correct application of nitrogen fertilizer can significantly increase potato yield, however, the optimal response to N fertilizer varies by cultivar (potato variety) and soil type.

The recommended dosage and application methods for foliar fertilizer on one mu of potato (approximately 667 square meters) are as follows:

1. Selection of Foliar Fertilizer

Before applying foliar fertilizer to potatoes, it is essential to choose the right product. There are many types of foliar fertilizers available on the market, including nitrogen, phosphorus, potassium, and micronutrient compound fertilizers. For potatoes, a foliar fertilizer containing appropriate amounts of nitrogen, phosphorus, and potassium is more suitable. These nutrients are necessary for promoting potato growth, especially nitrogen, which helps accelerate growth and increase yield; phosphorus aids in root development and nutrient absorption; while potassium enhances disease resistance and extends storage life.

2. Timing of Application

The optimal period for foliar fertilization is typically during the early growth stage of the plants when their demand for nutrients is relatively high. Specifically, foliar fertilization can be carried out 5-7 days after planting, before the plants begin to absorb large amounts of soil nutrients. Applying foliar fertilizer at this stage can quickly supplement the necessary nutritional elements.

3. Dosage

Regarding the amount of foliar fertilizer, it is advisable to follow the product instructions or consult professionals. Generally, the recommended dosage per mu is about 100-150 milliliters. This dosage may be adjusted based on specific crop requirements and soil conditions. Excessive use of foliar fertilizer can harm the plants and affect normal growth.

4. Application Methods

Various methods can be used for foliar fertilization, including spraying, spot application, and soaking. Spraying involves evenly distributing the fertilizer over the plants, which is simple and convenient; spot application targets specific leaves, suitable for precise applications; soaking dissolves the fertilizer in water and then evenly sprays it, ensuring uniform distribution.

5. Precautions

During foliar fertilization, attention should be paid to the following:

• Avoid direct sunlight: Chemicals in the fertilizer may degrade under sunlight, so apply when the sun is not directly shining to maintain effectiveness.
• Avoid skin contact: If accidental contact occurs, rinse immediately with plenty of water and monitor for any allergic reactions.
• Consider weather conditions: High temperatures or rainy weather can reduce the effectiveness of foliar fertilization, so choose clear days for application.
• Follow product instructions: Always adhere to the guidelines provided with the fertilizer to ensure proper use.

6. Efficacy Evaluation

The effects of foliar fertilization can be assessed through several aspects:

• Plant growth: Observe growth rate, leaf color, and texture to evaluate if the expected yield increase is achieved.
• Yield and quality: Measure actual yields and fruit qualities, such as size, shape, and taste, to assess the fertilizer's impact.
• Economic benefits: Compare input costs with output revenue to evaluate the economic value of foliar fertilization.

foliar fertilization is an efficient and convenient method but requires careful selection of products, correct application techniques, and attention to precautions. With proper foliar fertilization, potato growth rate, yield, and quality can be effectively improved, supporting sustainable agricultural development.