The cooling requirement of Iranian pistachio cultivars pistachio wholesale is about 1200-600 hours. No
Providing cooling needs of pistachio trees causes delay in flowering, irregular flowering,
Reduce the number of leaflets, produce simple and abnormal leaves and flower zinc
The growth branches of the current season are lateral and lateral. Pistachio is the same
Other deciduous trees require a certain minimum of cold to develop buds
For 1000 hours at a temperature of less than 7 degrees Celsius during the sleep period
It is winter. Akbari and Cherokee cultivars need colder than other pistachio cultivars
It has more than 1000 hours. In the winter of 1993 due to relative warmth
The weather reduced the need for cooling, familiarity with the operation, and some pistachio crops
Pistachio cultivars, including Akbari cultivar, were not supplied throughout the country and caused a decrease
The performance was over. For example, accumulated cold based on meteorological data
Rafsanjan until February 6, 1994 based on the calculation of the Utah method 624 hours and
The method from zero to 7 degrees Celsius was 625 hours as predicted
By the end of that year, 800 hours of cold will be provided. But for Akbari figure this
The need for cooling is not enough and this need will be met by the methods described
, To be eliminated. One of the methods to meet the cooling needs of Akbari cultivars
Pistachio is the use of volk oil. Due to temperature fluctuations in the use of oil
Volk is recommended as follows:
Soil and fresh water: Akbari cultivar 40 per thousand and other cultivars in the proportion of 30 per thousand
Soil and saline water: Akbari cultivar 50 per thousand and other cultivars 40 per thousand
Soil and saline EC is above 12. Due to the importance of Volk oil in the removal
To meet the cooling needs of pistachio trees, it is necessary to provide points in this regard:
First point: these materials are emulsifiable oils, Volk 92, Supravilo and…
They are famous. In fact, substances from the group of aliphatic hydrocarbons are from
Paraffin oils are made with petroleum derivatives.
Note: Vulk oil and winter spraying to control a variety of mites, aphids,
Bugs and psyllids and… on fruit and nut trees, grapes, citrus and ..
Used. Tip 2: Volk oil creates a thin layer, the whole body of the insect up
The egg surrounds it and kills the insects by closing the airways.
Therefore, in order to achieve the desired result, all parts of the plant must be covered
to be given. Third point: the right time to use winter oil is generally one
The weeks left to bud swelling and should be at normal temperatures other than the conditions
Spray frost and heat. Familiarity with operations
Pistachio orchards of course in each area should be consulted with an expert accurate timing
To take. Tip 4: Volk oil should contain 80% paraffin as standard,
18% water and 2% emulsifier.
Tip 5: After diluting and spraying volk oil on the trees due to the presence
Standard paraffin in velvet oil should be applied to the trunks of trees like oil
The place is radiant and this condition lasts for several days. These gardens of
Several kilometers are well recognizable. If you can not see after spraying
Sprayed trees were distinguished from unsprayed, volk oil
It has been of poor quality.
Note: Oil diesel oils, in addition to not being effective on targets, cause an epidemic
The trees dry out quickly.
Tip 6: Volk oil, if used before the tree wakes up, causes
Increases the sleep period. But if used a week before the buds swell,
It accelerates the opening of buds. Use excessive concentrations
Recommended sequentially, may have the following adverse effects:
1. Drying of the branches
2- Creating ectopic branches and boils with a lot of zinc
Main branches
3- Outflow of vascular sap from the crown site 4- Reduction of tree growth
Tip 7: Be sure to consult with relevant experts to prepare quality volk oil
To be.