Fertilizer Guide

                       

 

 

Cucumber belongs to the Cucurbitaceae familiy. Its botanical name is Cucumis sativus (L.) and it is an annual herbaceous plant. There are three main varieties of cucumber: slicing, pickling, and seedless. The cucumber is originally from South Asia, but now grows on most continents. 

Climate: If temperatures during the day oscillate between 20°C - 30°C barely have impact on production, although at higher temperature, higher early production. Above 30°C, imbalances that directly affect the processes of photosynthesis, respiration, and temperatures are observed. Temperatures below 16°C at night can cause malformations in leaves and fruits. 

  • Germination. 27ºC day and night
  • Vegetative Growth. 21ºC day and 19ºC night
  • Fruit development. 19ºC day and 16ºC night

Humidity: It is a plant with high requirements of humidity due to its large leaf surface. Optimum relative humidity of  60-70% during the day and 70-90% during the night.

SoilAny type of light textured soils, well drained and with high organic matter. It has a moderately salinity tolerance.

pH: 5.5-7

Carbon dioxide in greenhousesThe optimum amounts of CO2 are 500-900 ppm.

 

Nutritional requirements

Greenhouse Nutritional requirements. Source: Guía práctica de la fertilización racional de los cultivos en España, 2010. EL cultivo protegido en clima Mediterráneo, Food and Agriculture Organization of the United Nations, 2002
kg/ha
Expected yield (t) N P2O5 K2O CaO MgO
30 80-110 35-45 90-120
200 320 69 500 180 60

 

Fertigation recommendations

Nutrient requirements (kg/ha) for a cucumber farm greenhouse transplanted in the first half of July, with a planting density of 1.3 plants/m2 and average estimated yield of 100-110 tonnes, are as follows:

Greenhouse Fertigation recommendations. Source: Producción controlada de hortalizas en la agricultura intensiva, 2008
kg/ha
Stages Fortnight N P2O5 K2O CaO MgO
Establishment 1 8 6 10 3 0
Vegetative Development 2 15 12 25 14 3
Fruit set/Fruit development 3 30 16 45 35 8
4 37 26 45 21 3
5 35 25 35 21 3
6 35 17 35 21 3
7 35 17 35 21 3
Production 8 35 17 35 21 3
9 35 17 35 21 3
10 35 17 35 21 2
11 35 0 35 21 2
Total 335 170 370 220 33

 

Foliar fertilizers

Cucumber assimilates foliar fertilizers quite well. It is a large consumer of Magnesium that will be applied via foliar. Nitrogen, Phosphorus, Potassium, Calcium are also applied via foliar.

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.

Lima Europe has a wide range of foliar fertilizers and special products for foliar application.

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.

 

Cucumber fertilizer program

5 NPK 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 +TE: 2-5 kg/ha at plant establishment stage

Vegetative 27-27-27 + 3 MgO + TE: 2-5 kg/ha at vegetative growth stage

Fruit 18-11-59 + 2 MgO + TE: 2-5 kg/ha at fruit development stage

Grogreen Ca/B: 2-4 kg/ha. In order to correct Ca deficiency. Ca/B increases flowering and fruit set

Zn E-15: 200 g/hl. 2-4 applications during vegetative growth before flowering

Pro-mino: 200-300 ml/hl from establishment to fruit set

Micro: 0.5-1.5 kg/ha. Possible deficiencies from vegetative growth to fruit development

proteKt-K50: 2 l/ha. 1 application before first flowering and 3-5 applications at fruit growth stage