Timely harvest is very important in reducing early smiling pistachios and preventing growth and increase in the product, so choosing the harvest time in the product is very
It is important therefore to choose the harvest time of the crop is very important. Choosing the right harvest time according to the type of tree transplant and climatic conditions is important. Select.
Note: The best time to harvest is when 70 to 80% of the pistachio skin is easily removed
Important points in pistachio harvest
1- It is better to do the harvesting operation in the early hours of the morning so that the temperature of the harvested crop does not increase.
2- Prevent damage to pistachio green skin
3- Harvesting equipment must be clean and washable
4. Harvesting containers and equipment should not be stored in a place where there is a risk of contamination with fungi and chemicals.
5- Documenting and recording harvest records is very important.
Mechanized harvesting of pistachios:
Mechanized harvesting of pistachios is carried by the person by the branch shakers and consists of a long arm at the end of which a horseshoe-like clip is installed, in which the tree branch is placed and by shaking the crop as a grain from the tree The same is true for trunk shakers, except that it is carried by car and poured into the car.
Note: Regarding the use of mechanized method for different cultivars of pistachios in the garden should be done separately.
Fresh pistachios enter the processing terminal
The harvested product and transported to the terminal should be emptied immediately in the shade and away from direct sunlight, and processing should begin immediately after emptying.
Peeled pistachios harvested
At this stage, there is no risk of aflatoxin contamination due to health prerequisites and rapid peeling
1- Hygienic prerequisites are: The parts of the skin that are in contact with the skin are made of stainless steel and can be washed and disinfected.
2- The peeler should be washed regularly daily.
Pistachio washing (separation of Roabi pistachios)
At this stage, pistachio seeds are immersed in water and separation is done based on the weight of the pistachio. At this stage, water is sprayed with pressure on the pistachio and washing is done.
At this stage, due to the fact that there are hollow, immature and pests of pistachios in the peeled product, which are more likely to be contaminated with aflatoxins, they should be separated.
The more these empty and immature pistachios are removed at this stage, the less likely they are to become infected with aflatoxin.