How do fruits protect themselves from frost or at least reduce their consequences?
Fruit yields have a large effect on spring frosts that can reduce the yield by up to 80%.
In addition to intensity, the degree of damage depends on the duration and frequency of frostbite.
The appearance of frost during one night can only lead to flowering,
but if the frost occurs more often and longer,the crop may be completely destroyed in that year.
Preventive measures are reduced to slowing vegetation
Fruit lovers know that frosts can completely or partially destroy unopened flowers, open flowers, or newly formed fruits
Depending on the fruit type and varieties, the location of the branches in the crown and the applied bio measures,
the flower buds can withstand up to -5 ° C, the open flowers can collapse at -2 ° C and only grow to -1 ° C.
Preventive measures of protection against appreciable spring frosts are due to the slowing down of vegetation ,
the slowing down of the flowering stage and the prevention of temperature decrease at the critical point.
Smile method – the oldest, but not the least successful
Still some fruit trees apply one of the oldest measures for frost protection, which is a mood
Although it is a cheap method, it is not successful enough because the temperature increases by about 0.5 ° C to 1.5 ° C.
The simplest way is to prepare organic matter in advance by the orchard – unrefined seedlings, strawberries, plums, weeds.
These substances are put on the pile and fall.
Splashing with water – a measure to be taken with caution
There are also other ways to protect frosty fruits,
and one of them is continuous spraying with ordinary water that leads to creep at critical times when the temperature drops to the critical point and can provide an increase in the temperature in the orchard and thus prevent frost damage.
The foundation of this principle is that the water that turns the fruit into ice releases a certain amount of heat.
Increasing the temperature due to ice formation the surface of the flower or the newly formed plant,
while the tissue of these organs is protected by the elevated temperature that is formed therefrom.
It is important to note that such spraying should last as long as possible , with less water consumption .
Also, it is important to determine the exact moment of spraying, when the temperature in the fruit crown drops to 0 ° C.
If spraying is started earlier, no ice will be formed and there is no effect.
If spraying is late, it can have a negative effect and increase the bloom of the flowers
The waxing must last for as long as frost is applied, or until the temperature rises above the critical point ie above 0 ° C.
The forecast of frost and the existence of meteorological stations, in order to predict the frost in time,
are a necessary condition for the success of this measure.
Protecting fruit frosts with biological preparations
In addition to all these measures, antifreeze fruit can also be used with biological preparations,
such as natural antifreeze for plants, which is of natural origin and environmentally acceptable.
Its base is made up of subspecies bacteria and over 60 minerals that are usually found in our natural environment.
Many fruit trees on smaller parcels and dairy cultures fight frost by covering plants with different materials,
which proved to be good, but only applicable on smaller parcels.
It is important to know
Agricultural experts are reminded by dairy farmers that the danger of frost is lower in humid but on dry soil,
and if the frost is announced, it is good to soak the ground layer down to 25 cm deep for several days.
It is not recommended to treat the soil at the time of the frost, as above such soil creates more cold air than above the untreated.
Through sloping land the heat from the deeper layers is slower, so during the night such soil is quicker cooled.
Therefore, no weed in orchards and vineyards should be removed at that time,
and land processing should only take place when the danger of frost passes.
Source : Internet