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When flowering and fruiting plants are the most eagerly anticipated by farmers or plant lovers. However, the hope of harvesting the fruits sometimes does not come true because the flowers fall out and fall off before they develop perfectly. Therefore, before the crop fails because the flowers wilt before developing, please note some causes of flower loss and prevention. In general, the loss of postpartum fruit is caused by several factors, among others:
- Loss due to chemical physiological factors
Nutritional content, especially nutrient phosphate (P) and potassium (potassium = K) limited in soil or planting media tabulampot become the main cause factor of flower loss and will fruit or fruit being enlarged. If the content of potassium in the soil is very limited, then the loss of fruit will become more. The loss of this fruit will be more severe if the supply of water from the soil to the plant is also limited. If the loss of fruit is caused by potassium malnutrition factor, potassium chloride, KCl, or in compound form (potassium nitrate, KNO3) can be a solution to overcome the loss of fruit.
- Loss due to biological factors
Pascapersarian flowers should be followed by the formation of fruit will that will develop into a perfect fruit. But it often happens will fall due to fruit attacked by several types of pests and fruit diseases. These pests are generally attacked at the time of the formation of flower petals to the formation of fruit pascapersarian flowers. Some caterpillar pests eat newfruits, whereas borer pests suck the fluid of newly formed fruit cells, as well as various types of fluid-sucking lice that secrete a type of honey favored by ants. The use of chemical or chemical pesticides and fungicides and pheromone feeds can be the solution.
- Loss due to physical factors
In the rainy season with high rainfall becomes the main cause of falling flower or going to fruit pasca. In wet conditions, benangsari (male genitals in flowers) stick to each other because bound by water, benangsari can not meet and fertilize the head of the pistil (female genitalia on flowers). Conversely in the dry season, extreme hot temperatures accompanied by low moisture effects during the day, also become the physical factor causing the failure of persarian. The use of plastic cover on the flower bud can be one simple solution of this problem.
- Loss due to other causes
In addition to the factors mentioned above, in certain plants, there is a significant time difference between cooking stamens (male genitals) and pistil (female genitalia). That is, the stamens cook more early or even cook slower than cooking the pistil. Giving some chemical compounds, such as gibberellic acid (GA3), can stimulate the occurrence of simultaneous cooking with the cooking of the stigma head or vice versa. While in the absence of pollinating insects, it is difficult for flower stamens to pollinate the stigma head, and the absence of wind as a pollination medium, artificial pollination with the help of manpower, eg in vanilla plants, several varieties of salak, and dragon fruit varieties