Irrigation is a very important process that must be carried
out regularly, and the following must be taken into account.
1 – Watermelon plants are one of the most drought-tolerant plants, because the roots have a great ability to absorb water from the soil. The wilt point of watermelon plants is 15 atm, while the soil retains water up to 13 atmospheres, so the watermelon usually does not dry out or wither, unless irrigation is neglected. Seriously harm plants.
2- Watermelon cultivation succeeds in sandy lands under a regular and good irrigation system.
3- The regularity of irrigation is taken into account during the fruit setting stage until the fruits are fully ripe, especially in irrigated crops and also drip irrigation, as irregular irrigation leads to major problems affecting the crop as the yield is very low.
4- In the stage of holding fruits, irregular irrigation and thirst of watermelon plants leads to failure of pollination and failure to hold fruits. the heat
5- Irrigation water should not be wasted in the late stages of the life of plants in the growth of fruits, which are the stages close to maturity. Irrigation should be regular and plants should not be thirsty so as not to lead to a high percentage of moisture leading to a decrease in the sweetness of the fruits and cannot bear storage.
6 – It is recommended to stop irrigation in irrigated agriculture two weeks before collecting the fruits, in order to increase the percentage of sweetness, raise the percentage of sugar in plants, and reduce the percentage of moisture so that the fruits can bear shipping and storage,
7- It is not recommended in sandy lands, which are irrigated by drip, by stopping irrigation, because the root total in these lands is superficial, and therefore any lack of moisture in the root growth area, especially in periods of extreme heat and when the fruits ripen, exposes the fruits of watermelon to great damage that is reflected on the resulting crop and its quality.
Pollination, fertilization and cultivation of red watermelons:
Pollination in watermelon plants is mixed with insects, especially honeybees, so it is necessary to provide 2 cells of palm cells per acre, because pollen grains in watermelon are sticky and therefore there must be insects to transfer pollen from one flower to another, and about 1000 pollen grains must be transferred to the stigma The female flower is to be pollinated well, which leads to the formation of fruits of regular shape.
As for the seedless watermelon, where the plants are sterile, it is always recommended to plant a pollinated variety, and the ratio of seedless plants to the pollinated variety is 3: 1, that is, three lines of seedless plants to one line of the pollinated variety, with the provision of 3 beehives per acre to help pollination and fertilization.
Signs of ripening red watermelon fruits:
The fruits of watermelon reach maturity after the flowers to the full maturity of the fruits by about 45 days on average, and the period may be less than that during the hot months.
1- The color of the part in contact with the soil of the fruit turns from yellow to white.
2- Dry tendrils opposite the neck of the fruit.
3- Hardening of the rind in contact with the soil of the fruit.
4- Covering the plants with a white waxy layer.
5- By knocking on the fruits in the early morning, the sound will be hollow and muffled. As for the unripe fruits, the sound will be metallic.
6- If the fruits are immature, when pressing the fruits between the palm of the hand, the sound of tearing the internal tissues of the watermelon fruits is heard.
Collecting watermelon fruits from the field:
Watermelon fruits are collected by cutting the fruits from the side of the neck, and the collection is done by bending the neck of the fruit against its connection with the plants, so it separates easily, and is collected in the early morning.