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Watermelon Production Technology

Watermelon belongs to war season family crops like squash, cucumber and pumpkin. It can be grown on well drained soil.

Cultivars :

Watermelon shape can be round or oval. While the rind color can be dark to light green and with or without strips. Its varieties can be divided into three groups,

Open-pollinated
F1 hybrid
Triploid or seedless

Planting and Spacing

Watermelon seed germinates at soil temperature of 68F to 95F and germination is slow below 70F. At 77F soil temperature, seed is germinated in five days.   Its seed should be planted one inch deep.  

Almost 0.5 to 1 kg seed is required for one acre which depends upon seed size, germination ratio and plant to plant distance.

Pollination :

Two type of flowers are produced in watermelon, male and female. At flowering stage a male flower is produced at every node while a female flower is produced at every seventh node approximately. A flower remains only for one day. Therefore a lot of insects are required for pollination. In average conditions, two to three fruits set on a plant.

Research has shown that on average, a female flower should be visited seven time by inset for proper pollination. Insufficient pollination may result in deformed melons.

Melon Defects

Blossom-end rot (BER)

Its physiological or nonparasitic disorder which is related to calcium deficiency or moister stress or both. Its prevention can be made through enough amount of calcium, proper soil pH, and a consistent and better supply of moisture.

Hollow heart (HH) and white heart (WH)

It’s a physiological disorders which is generated by genetics, environment and a number of other nutritional factors. Its prevention can be made by adopting cultivars that have not shown high incidences of HH or WH and the crop should be grown under optimal nutritional and moisture conditions.  

Diseases

Damping-off

It is caused by a seedling disease that involves Phythium spp., Rhizoctonia spp. or Fusarium spp. The prevention can be made by good cultural practices and seed treatment for damping-off of young watermelon seedlings. Most favorable conditions for damping-off are cool, wet weather.

Root-knot Nematodes

These are small eel-like worms that live in the soil and feed on plant roots. These cause severe damage to this crop in infested soils.

Nematodes damage the root system therefore the plant cannot take up water and nutrients. Also they permit diseases like Fusarium wilt to enter the plant. Serious root-knot injury usually seems as stunted, wilted growth. Before planting the crop, watermelon fields should be analysed for this disease.

Gummy Stem Blight

It is a fungal disease which causes stem canker, crown rot, damping-off, fruit rot and leaf spot in this crop. The leaves become round or irregular with brown color. The affected area on the crown and stem become brown and white with the passage of time. Early attack comes from diseased seeds. Brown to black spots can be observed between the leaf veins of older leaves. This disease spreads from the center of the plant outward.

Anthracnose

This is a destructive disease and it can attack on any time in crop. Its symptoms are round to angular reddish brown spots on the oldest leaves which may later dry, turn black and tear out.

Mostly, the central leaves of the plant die initially due to which the stem and a portion of the runners become bare. Light brown to black elongated strip appear on the stems and petioles. Due to warm and rainy weather, every leaf in whole crop may be finished which would show the field a burned over appearance.  

 

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About Naveed Ahmad

Naveed Ahmad is a Software Engineer, a progressive farmer, a blogger, a social media expert, a writer, an anchor and the Chairman of R & D Board of RARI Bahawalpur. Other than the CEO of this website and Agrimandi.pk, he is active on fb at fb.com/AgricultureDotPk and at Youtube channel with Agriculture.pk name.

8 comments

  1. Dear Brother Naveed Ahmad.
    Kindly correct the temperature range for germination:

    “Watermelon seed germinates at soil temperature of 68C to 95C and germination is slow below 70C. At 77C soil temperature, seed is germinated in five days”.

    I think you mean Fahrenheit (F).
    Regards,
    Muhammad Irfan Nawaz

    • Dear Muhammad Irfan Nawaz,

      I am really thankful to you for identifying this bug. I have made the correction.

      Your guideline and suggestion is needed in future as well please. Your experience and knowledge will surly help our farming community.

      Warm Regards,

  2. Respected Sir,
    I cannot find any info about the current status of water melon production and research in Pakistan. If you have any knowledge, please help me.

  3. Sir Tarbooz ke kasht ke liye Aap tips dy

    • Dear Allah Bux Soomro,

      Main ne aik post share ki hae es website per tarbooz per …….. jo kih progressive farmer Muhammad Abuzar Kathia ki taraf say likhi gaye hae ………. wo es fasal k bahut achay kashtkar hain …….. aap ko kuch pochna ho humain likh dein ….. us sya jawab lein gay

      Bahut shukriya bhai

  4. page 6 is missing , kindly post.

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