1、Optimal Frequency for Water

To select the optimum fertilizer application under specific irrigation levels and to provide a reliable fertigation system for tomato plants, an experiment was conducted by using a microporous membrane for water-fertilizer integration under non-pressure gravity.

2、Effects of Nutrient Solution Application Rates on Yield, Quality, and

For an optimal water and fertilizer system with respect to the nutrient solution irrigation of greenhouse tomatoes using cultivation substrates, a two-year greenhouse cultivation experiment was conducted from 2022 to 2023.

3、Identification of optimal irrigation and fertilizer rates to balance

Optimal fertilization coefficient ranges were 0.98–1.34 (spring), 1.06–1.41 (fall). The precise management of water and fertilizer is necessary to maximize greenhouse tomato production.

4、Effects of Organic Water

Under identical irrigation and fertilization conditions, the F2 organic water-soluble fertilizer demonstrated superior enhancement effects on tomato indicators compared to the F1...

Optimizing Water–Fertilizer Coupling Across Different Growth

An integrated scoring analysis revealed that treatment T5 achieved the highest yield, WUE, and partial factor productivity (PFP), whereas T7 excelled in fruit quality (VC, LC, SSC, and SP). Moreover, TOPSIS confirmed T5 as the optimal water–fertilizer strategy to achieve high yield, improved quality, and efficient resource utilization.

Effects of Nutrient Solution Application Rates on Yield, Quality, and

For an optimal water and fertilizer system with respect to the nutrient solution irrigation of greenhouse tomatoes using cultivation substrates, a two-year greenhouse cultivation experiment was conducted from 2022 to 2023.

Optimizing Water–Fertilizer Coupling Across Different Growth Stages of

This study hypothesizes that integrating optimal fertilization rates with appropriate irrigation volumes at specific growth stages can synergistically enhance tomato yield, fruit quality, and water–fertilizer use efficiency in yellow sand substrate cultivation systems.

Effects of different fertilization rates on growth, yield

To select the optimum fertilizer application under specific irrigation levels and to provide a reliable fertigation system for tomato plants, an experiment was conducted by using a microporous membrane for water-fertilizer integration under non-pressure gravity.

Evaluation of the effects of irrigation and fertilization on tomato

In conclusion, the proper application of drip fertigation (W2F1) may be a good compromise for solar greenhouse-grown tomatoes with regard to fruit yield and quality, WUE, and PFP.

Fertilizer schedule applied for tomato cultivation.

Fertigation schedules were started after three weeks of transplanting of tomato seedlings with the respective fertilizers at weekly intervals ( Table 1). Variety of tomato used for this study...

Tomatoes are an essential vegetable crop with high nutritional demands throughout their growth cycle. The rational use of water-soluble fertilizers can significantly improve yield and quality. Below are recommendations for fertilization frequency:

I. Understanding Tomato Growth Requirements

1. Nutritional Needs: Tomatoes require substantial amounts of nitrogen (N), phosphorus (P), and potassium (K).

   • Nitrogen promotes chlorophyll synthesis and photosynthesis.
   • Phosphorus supports root development and fruit formation.
   • Potassium regulates water balance and enhances stress resistance.

2. Growth Stages:

   • Seedling and flowering stages: Higher nitrogen demand.
   • Maturity stage: Increased need for phosphorus and potassium.

II. Selecting Appropriate Fertilizers

1. Organic Fertilizers: Options like chicken manure or cow dung provide comprehensive nutrients but require controlled application to avoid excess soil salinity.

2. Water-Soluble Fertilizers:

   • Choose formulas rich in N, P, and K for rapid absorption.
   • Ensure proper nutrient ratios and avoid heavy metal contamination.

III. Rational Fertilization Practices

1. Timing:

   • Apply during critical growth periods (spring and autumn).
   • Reduce frequency in summer and winter to prevent over-fertilization.

2. Dosage:

   • Adjust based on plant size, growth stage, and soil fertility.
   • Increase gradually from seedling to maturity; reduce during late stages.

3. Application Method:

   • Use deep application to minimize nutrient loss.
   • Avoid direct contact with roots to prevent burning.

IV. Key Considerations

1. Avoid Over-Fertilization: Excessive use leads to soil salinization, harming plants. Follow recommended dosages.

2. Prevent Alkaline Reactions: Avoid mixing acidic fertilizers with alkaline substances to prevent nutrient lockout.

3. Supplement Micronutrients: Provide iron (Fe), zinc (Zn), manganese (Mn), etc., for balanced growth.

4. Soil Testing: Regularly test soil nutrients to adjust fertilization plans.

5. Weather Adaptation:

   • Increase irrigation in dry seasons.
   • Reduce fertilization in rainy periods to avoid root damage.

6. Nutrient Synergy: Combine N-P-K with calcium (Ca), magnesium (Mg), and sulfur (S) for optimal health.

7. Pest and Disease Control: Monitor plants and address issues promptly using biopesticides or chemicals.

8. Crop Rotation: Avoid continuous tomato planting to prevent soil depletion and pest buildup.

9. Environmental Protection:

   • Use low-pollution fertilizers.
   • Reduce runoff through mulch or film covers.

10. Timely Top-Dressing: Address deficiencies (e.g., yellowing leaves) with micronutrient-rich supplements, but avoid overapplication.

optimizing water-soluble fertilizer use tailored to tomato growth stages and environmental conditions is crucial for maximizing yield and quality. Adjust practices based on soil tests and seasonal changes for best results.