Fertilization Plan by Crop Stage: What to Apply at Each Point

Q: What fertilizer should I apply during flowering?

The priority is boron for fertilization, together with amino acid or seaweed biostimulants. Excess nitrogen during flowering favors leaf growth over flowers.

Q: What should I apply to bulk up the fruit?

Calcium for firmness, amino acids and seaweed for cell division, and, toward ripening, potassium for size and color.

Q: What should I do after a hailstorm?

Apply fast-acting amino acids within the first few days and consider a foliar calcium application to strengthen damaged fruit.

Quick answer: each stage of the crop cycle has a main need. Soil: organic matter (humic acids). Transplanting: phosphorus, amino acids and seaweed to root well. Budbreak and growth: amino acids and micronutrients. Flowering: boron and biostimulants. Fruit set and bulking: calcium, amino acids and seaweed. Ripening: potassium for size, color and sugar content. Stress: amino acids, seaweed and specific protection. This guide summarizes what to apply at each point and links to the detailed guides.

1. Soil preparation and improvement

Soil with good structure and microbial life makes much better use of fertilization.

Humus Puro or Humus Sólido to supply humic and fulvic acids.
Vitalia Suelo Premium to activate microbial life.
Equilibrio if the water or soil is saline; Mineralia for demineralized soils.

More detail: humic acids and organic amendments.

2. Transplanting and establishment

Trasplante Vital: amino acids, seaweed, phosphorus and potassium for a fast root start. Fertigation 1-1.5 L/ha right after transplanting.
Ondara Maxima (Ecklonia maxima) and Fosforia to strengthen the root.

3. Budbreak and vegetative growth

In fruit trees, Brotalia to break winter dormancy.
Amino acids such as Colavit or Savia Terral.
Micronutrient correctors if there's chlorosis: Costera, Ferralia or Terramin ZnMn.

More detail: amino acids for plants and iron, zinc and manganese deficiencies.

4. Flowering

Boron: Florecer Boro or Polinia Premium (boron and molybdenum).
Flowering biostimulants: Esencia Premium and Florecer Max.

More detail: boron and molybdenum for flowering and fruit set.

5. Fruit set

Savia Vital: amino acids with micronutrients for larger, more uniform fruit.
Impulso Fruital: glycine betaine to reduce flower abortion, especially in melon and watermelon.
Ondara: seaweed for the extra energy needed at fruit set.

6. Fruit bulking

Calcium for firmness: Equilibrio Premium, Calcia or Firmeza Ca (foliar).
Amino acids: Savia Premium.

More detail: calcium for crops.

7. Ripening

Potassium for size, color and Brix degrees: Potasia Acida, Potasia Plus or Potasia 20.
For fruit exposed to sun (apple, melon, watermelon, orange, tomato), Solaria reflects UV radiation and lowers the skin temperature of the fruit. Foliar 20-30 L/ha.

More detail: potassium and phosphorus.

8. Stress situations

Situation	What to apply
Hail, drought, root asphyxiation, phytotoxicity	Impulso or Savia Premium
Heat or cold	Ondara, Potasia Acida
Water, heat or salinity stress	Marea Resiliente; for salinity, Equilibrio
Sunburn on fruit	Solaria
Bruising, wind and hail on fruit	Firmeza Ca

For every treatment: water and spray mix

Before any application, check the water pH. A corrector such as Equilibrio pH and an adjuvant such as Cumbre help you get the most out of every product. Guide: how to correct pH. To strengthen the plant preventively, see copper, sulfur and silicon.

Specific crops and a tailored professional range

Potato and tubers: Tubervital.
Tailored solutions: Estatera, Paragon, Bastión, Cristalia, Acuaterra and Salvia Azul cover specific needs of professional growing. Request the technical data sheet to see which one fits your case.

Frequently asked questions

What fertilizer should I apply during flowering?

During flowering, the priority is boron (for fertilization) together with amino acid or seaweed biostimulants. Excess nitrogen at this stage favors leaf growth over flowers.

What should I apply to bulk up the fruit?

During bulking, calcium for firmness, amino acids and seaweed for cell division, and, as ripening approaches, potassium for size and color.

What should I do after a hailstorm?

Apply fast-acting amino acids (Impulso or Savia Premium) within the first few days to help the plant recover, and consider a foliar calcium application to strengthen damaged fruit.

Every operation is different: if you want a plan tailored to your crop, soil and water, our technical team offers advice with no obligation.