fertilizer guide

          

 

Tomato belongs to the Solanaceae family.  It is an annual plant. Growth stages of plants, in very general terms, can be split into four periods: Establishment from planting or seeding during vegetative growth until first flower appears, from first flowering to first fruit set, from fruit ripening to first harvest, and from first harvest to the end of the last harvest. The duration of each stage may vary according to growing method, variety characteristics and climatic conditions. Tomato is the most widespread vegetable in the world and with the most economical value.

ClimateTemperature is the primary factor influencing all stages of development of the plant: vegetative growth, flowering, fruit setting and fruit ripening. It adapts to a great variety of climates. It does not tolerate frost: at temperatures below 12ºC, the vegetative activity is paralyzed. The optimum temperatures for growth are from 18º to the 27ºC. Outside this range the production can be seriously affected

Humidity: Optimum relative humidity ranges from 60% to 80%

Soil: Tomatoes can be grown on soils with a wide range of textures, from light, sandy soils to heavy, clay soils. Sandy soils are preferable if early harvest is desired

pH: The optimum level is is between 6.0 – 6.5, tolerating up to 5.5

Carbon dioxide in greenhousesThe optimum amounts of CO2 700-800 ppm

Nutritional requirements

Among the total amount of nutrient uptake, fruits absorbs most of the Nitrogen (65%), Phosphorus (70%) and Potassium (65%), the leaves and petioles being the ones that accumulate the most amount of Calcium (76%) and Magnesium (60%).

Nutritional requirements (kg/ha). Source: Rincón et al., 1990
Growth conditions Yield N P2O5 K2O CaO MgO
Greenhouse 200 430 130 630 340 120
Outdoor 150 417 108 724 374 110

 
Fertigation recommendations

 

Greenhouse Tomato Fertigation Program. Source: Rincón Sánchez, 2003
Nutrient distribution (kg/ha). Planting 1-15 Sept.Yield: 200 t
Days after transplanting N P2O5 K2O CaO MgO
0-15 3 1 5
15-30 5 2 10
30-45 7 3 15
45-60 10 4 20
60-75 15 5 25
75-90 20 10 35 5
90-105 30 10 50 10
105-120 35 10 55 12 4
120-135 40 12 60 15 5
135-150 40 12 60 15 6
150-165 40 12 60 15 6
165-180 40 12 60 15 6
180-195 35 12 55 15 6
195-210 35 10 55 15 6
210-225 35 5 45 12 5
225-240 25 5 35 10 5
240-255 15 5 25 8 5

Greenhouse Tomato Fertigation Program. Source: Rincón Sánchez, 2003
Nutrient distribution (kg/ha). Planting 1-15 Feb.Yield: 200 t
Days after transplanting N P2O5 K2O CaO MgO
0-15 15 5 20
15-30 20 7 25
30-45 25 10 30
45-60 30 12 40
60-75 35 12 50 10 5
75-90 40 12 60 15 6
90-105 40 12 70 15 6
105-120 40 12 70 15 6
120-135 40 10 70 15 6
135-150 40 10 60 15 6
150-165 35 8 50 15 6
165-180 30 6 35 15 5
180-195 25 4 30 10 4

Foliar fertilizers

Foliar fertilization is the fastest and most effective method to supplement and enrich plant nutrition and to correct nutritional deficiencies when needed. This contributes significantly to higher and better quality productions.

In order to verify the safe rate under local conditions, it is advisable to spray recommended rate on a few plants. After 3-4 days check the tested plants for scorching symptoms.

Nitrogen, Phosphorus, Potassium, Calcium and Boron are also applied via foliar. Lima Europe has a wide range of foliar fertilizers and special products for foliar application.

 
Tomato fertilizer program

5 Terra 12-44-12 + 6 CaO + 3 MgO + TE

5 NPK Multi 20-20-20 + 6 CaO + 3 MgO + TE

5 NPK Fructus 18-9-36 + 6 CaO + 3 MgO + TE

Starter 16-69-16 + Micronutrients

Fruit 18-11-59 + 2 MgO + Micronutrients

Grogreen Calciphos: 2-5 kg/ha from flowering through fruit development and up to harvest in order to avoid Blossom End Rot

Micro: 1-2 kg/ha in order to correct deficiencies

Grogreen Ca/B:  3-5 kg/ha in order to improve flowering, quality of fruit and avoid Blossom End Rot

proteKt-K50: 2 l/ha during fruit development and maturity to increase quality of fruit