Pear
Order: Rosales
Family: Rosaceae
Subfamily: Pomoideae
Genus: Pyrus
Species: There are many species
A- East Asian pear species
B- Central Asian pear species
C- Mediterranean basin pear species
D- European pear species
The pear tree, whose Latin name is Pyrus communis, is from Rosaceae family. Its white flowers, which open early in spring, resemble roses... The pear fruit is a pseudofruit. Sometimes stone cells are found in the fruit flesh. This is related to the variety and soil conditions. The skin of the fruit can be green, yellow, red or dark red. The tree grows vertically. The crown generally develops in the form of a pyramid. Body color is dark gray. Its wood is quite hard. The root of the pear goes deep. It has a pile root structure.
Its branches are hairless. There are three types of branches; 1- Gluttonous branches 2- Wood branches 3- Fruit branches. Pear is a temperate climate fruit. Its resistance to cold is less than apple. It can withstand up to -30oC. The pear blooms 7-10 days before the apple. Therefore, it can be affected by late spring frosts. Pear orchards should not be established in pits where cold air settles. Pears like places with plenty of sun and hot summers.
Commercially valuable species suitable for long-term storage
Mainly species such as Santa Maria, Conference, Abate Fetel, Deveci, Nashi, Williams, Ya Li, Starkrimson, Chojuro, Doyene Du, Comice, Etrusca, Hosui, Kosui
Pear Harvest
The average pear tree is ready for harvest about 110-115 days after flowering. In most parts of the USA, the pear harvest is done in late summer and fall (August-October). As with all fruit trees, knowing exactly when to harvest takes years of experience and constant "trial and error" effort. Alternatively, commercial fruit tree growers regularly check the sugar content of fruit to determine the optimal harvest time. As a general rule, we do not allow pears to fully ripen on the tree, as this adversely affects fruit quality (when the fruit is fully ripe on the tree, the seed area inside the fruit will be sandy - except for Ya Li pears). Pear harvesting is done only by hand, because it is very sensitive to bruises. After the harvest, the fruits are sorted and then the fruit is classified because damaged fruits produce ethylene and this can damage other fruits
When long-term storage is planned for pears, it should be harvested a little earlier than the normal harvest time. However, this is a sensitive subject that requires experience. It will also risk the tonnage to be obtained from the product and the ripening of the fruit after storage and reaching the taste and characteristics that will create commercial value.
In general, except for one or two species of pears, they do not reach the maturity level that will create their commercial value in the tree. This only occurs in repositories.
Suitable conditions for pear storage
As with all fruits, the product should be brought to the warehouse as soon as possible after harvest, and it should be put into the cold chain by lowering the core temperature with pre-cooling. Reducing the core temperature as soon as possible is the golden rule for long-term storage, as with all fruits, for pears. It depends on this to maximize the storage time in the current product. Generally, the cold storage conditions of pear varieties are 1-3 months at -1°C to 2°C and 90-95% humidity. These values vary depending on the type of pear, the geography where the harvest is made and the climate. Since pears are extremely sensitive to moisture loss, it is recommended to use humidifiers for storage. Otherwise, softening is seen in the neck / handle parts and long-term storage becomes risky.
Pear in Controlled Atmosphere Storage Conditions
In controlled atmosphere pear storage, 1.5 - 4% CO2 for O2, although it is quite low in most pear species, its approximate average values are in the range of 0.5 - 5% CO2. Most pear types can be stored in a controlled atmosphere for longer periods than normal conditions, but pear types such as Comice can be stored for up to 11 months. Deveci pear, which is the geographical brand of Turkey, almost doubles the storage time with controlled atmosphere compared to normal warehouses.
However, the net storage protocol values (O2, CO2, Temperature and Humidity) may vary due to many conditions such as the harvest time of the fruit in that season, the climate of the year in which the fruit is grown, the type of pear it is, soil / irrigation / garden characteristics in terms of harvesting style. For full controlled atmosphere protocols, information and professional support should be obtained from expert institutions, related horticultural departments of universities, and experienced private consultants.
We help our customers who prefer us as a solution partner for pear storage systems in controlled atmosphere via specialized organizations or individual consultants who will provide the most accurate and appropriate solution on your concerns.
Controlled Atmosphere Equipments
Controlled Atmosphere Control Automation
Oxygen Scrubber (Nitrogen Generator)
Carbon dioxide Scrubber
*Önemli Not: Buradaki veriler, bilimsel olarak tavsiye edilen veriler olmak ile birlikte, belirli bir bölgeye özgü olmayan genel saklama koşullarını içermektedirler. Bu nedenle, sadece gösterge niteliğindedir ve bu bilgilerden hiçbir sorumluluk ya da hak elde edilemez. Daha detaylı profesyonel ve ürününüze uygun tavsiyeler için yerel araştırma kurumlarına ya da üniversitelerin ilgili bölümlerine danışılmalı ve profesyonel destek alınmalıdır.
*Important Note: The data here are scientifically recommended data, but contain general storage conditions that are not specific to a particular region. Therefore, it is indicative only and no liability or right can be derived from this information. For more detailed professional and product-appropriate recommendations, local research institutions or relevant departments of universities should be consulted and professional support should be sought.
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