Fertilizer guide

                  

 

 

Both Melon (Cucumis melo L.) and Watermelon (Citrullus lanatus) are annual plants of the Cucurbitaceae family and with a creeping and climbing nature.

Melon, originated in Africa and southwest Asia, has a sweet edible, fleshy fruit variable in shape, size and color depending on variety. Surface can be smooth, warty and white-yellowish, green or speckled.

Watermelon is native to southern Africa. Its fruit has a smooth hard rind, usually green with dark green stripes or yellow spots, and a sweet, juicy interior flesh (usually deep red to pink, but sometimes orange, yellow, or white) with many seeds, which can be soft and white or hard and black.

Climate: Melon plant requires warm and not excessively humid climate, so that in humid regions with low insolation its development is adversely affected, showing alterations in ripening and fruit quality. Watermelon is less demanding in temperature than melon.

Melon                                                                      Watermelon

Germination. Minimum 15ºC                               Germination.  Minimum 15ºC
                        Optimum 22-28ºC                                                  Optimum 25ºC
                        Maximum 39ºC
Flowering.     Optimum 20-23ºC                         Flowering.  Optimum 18ºC-20ºC

Developm.    Optimum 25-30ºC                         Developm.  Optimum 23-28ºC

F. ripening.     Minimum 25ºC                              F. ripening.   Minimum 23-28ºC

Humidity: Melon: At the beginning of plant development the relative humidity should be 65-75%, flowering 60-70% and fruit development 55-65%. Watermelon: The optimum relative humidity for watermelon is between 60% and 80%, being a determining factor during flowering.

Soil: Watermelon needs light soils, rich in organic matter and well drained. Deep and loam soils, as well as sandy clay soils are good for watermelon growth too. Melon is less demanding than watermelon. It needs soft, fertile, deep, well ventilated and drained soils.

pH: 6-7

 

Nutritional requirements

Melon nutritional requirements. Source: Guía práctica de la fertilización racional de los cultivos en España,2010. Rincón et al.,1998
kg/ha
Expected yield (t) N P2O5 K2O CaO MgO
35 110-140 50-60 250-330 80-90 30-40
50 225 105 450 175 85

 

Watermelon nutritional requirements. Source: Guía práctica de la fertilización racional de los cultivos en España,2010. Pomares et al.,1996
kg/ha
Expected yield (t) N P2O5 K2O CaO MgO
50 110-130 50-60 140-190 45 35
66-110 174-360 51-83 245-341 110-280 48-87

Fertigation recommendations

Melon Fertigation Program. Source: Rincón et al., 1998
Nutrient distribution (kg/ha). Yield: 50 t
Days after transplanting N P2O5 K2O CaO MgO
0-15 4 2 5
15-30 6 3 15
30-45 10 5 30
45-60 20 10 45
60-75 25 15 65
75-90 35 20 75 10 4
90-105 45 20 70 15 6
105-120 35 15 65 15 6
120-135 30 10 50 10 4
135-150 15 5 30

 

Watermelon Fertigation Program. Source: Rincón et al., 1998
Nutrient distribution (kg/ha). Yield: 50-60 t
Days after transplanting N P2O5 K2O CaO MgO
0-15 4 2 5
15-30 6 3 10
30-45 10 5 15
45-60 15 10 25
60-75 20 15 30 5 3
75-90 25 20 45 10 5
90-105 30 20 55 15 5
105-120 25 15 40 15 5
120-135 20 10 35 5 2
135-150 10 5 15

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.

Potassium, Calcium, Zinc and Boron are also applied via foliar. 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.

Watermelon fertilizer program

 Melon fertilizer program

 

 

Tailor-Made NPK

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

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

Calciphos: 2-4 kg/ha. In corder to eliminate deficiencies. Calciphos stimulates flowering, fruit set, fruit growth, etc.

Zn E-15: 200 g/hl

Mn E-13: 200 g/hl

Pro-mino: 200-300 ml/hl from vegetative growth to maturity

proteKt-K50: 2 l/ha for Potassium input