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 conditionsYieldNP2O5K2OCaOMgO
Greenhouse200430130630340120
Outdoor150417108724374110

 
Fertigation recommendations

 

Greenhouse Tomato Fertigation Program. Source: Rincón Sánchez, 2003
Nutrient distribution (kg/ha). Planting 1-15 Sept.Yield: 200 t
Days after transplantingNP2O5K2OCaOMgO
0-15315
15-305210
30-457315
45-6010420
60-7515525
75-902010355
90-10530105010
105-120351055124
120-135401260155
135-150401260156
150-165401260156
165-180401260156
180-195351255156
195-210351055156
210-22535545125
225-24025535105
240-2551552585

Greenhouse Tomato Fertigation Program. Source: Rincón Sánchez, 2003
Nutrient distribution (kg/ha). Planting 1-15 Feb.Yield: 200 t
Days after transplantingNP2O5K2OCaOMgO
0-1515520
15-3020725
30-45251030
45-60301240
60-75351250105
75-90401260156
90-105401270156
105-120401270156
120-135401070156
135-150401060156
150-16535850156
165-18030635155
180-19525430104

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