Do You Choose the Right Grape Growing Bag？

The bagging cultivation of grapes has become an important technology to produce high-quality green high-grade fruits. Fruit bag selection is an important part of bagging technology, so how should we choose the right high-quality fruit bag?
1.  Selection of the Fruit Bag Style
1.1 Requirements of Grape Varieties on Light Transmittance of Fruit Bags
● Grapes of Kyoho strain:
The variety does not require high light transmittance of fruit bags, so ordinary wood pulp paper fruit bags can be used.
● Grapes of Eurasian strains:
Because grapes need a lot of direct light when coloring, fruit bags with good light transmittance should be selected.
● Grape varieties with thin skin and difficult coloring:
Fruit bags that can prevent sunburn and easy coloring shall be selected for these varieties.
1.2 Differentiation of Grape Colors
● Green series of grapes, usually in green bags.
● For red, purple and black grapes, light or white fruit bags are preferred.
1.3 Differences in Cultivation Methods
● Greenhouse planting and rain sheltering planting:
The light intensity is weakened, which will affect the coloring of fruits, but the sunburn is relatively light, so fruit bags with good light transmittance should be selected.
● Grapes planted daily:
Due to sufficient sunlight, sunburn-proof fruit bags should be selected to avoid fruit sunburn.
2. Quality Inspection of Fruit Bags
● First, soak the grape bag in water. Then, rub the bag back and forth with your hands to check whether it is damaged or softened. If there is damage and softening, it indicates that the bag quality is poor.
● In addition, you can look at the transparency of the paper in the sun to see if it is even. If the light transmission is uneven, it indicates that the bag quality is poor.

"The bagging cultivation of grapes"
Are you talking about bags that you put over fruit to prevent insects/birds from eating them while they continue to ripen on the vine?

If you're in a greenhouse, would bagging the grapes even be necessary?
I suppose if the greenhouse is having a disease outbreak, or isn't kept closed during the day and bugs are freely allowed in & out...

I figured using an organza wedding-favor style mesh bag, or a nylon stocking was good enough for most fruits, including grapes.
Just slip them over the bunch, tie a string around the top and wait it out. Both are reusable.

Or a waxed bakery bag if you're worried about fungal/bacterial diseases.

Toko Aakster wrote:"The bagging cultivation of grapes"
Are you talking about bags that you put over fruit to prevent insects/birds from eating them while they continue to ripen on the vine?

Toko, that is a good question so I asked Mr. Google who gave me these.  Who knew that grapes could be grown in bags?

They are made from that "Smart Fabric" that is questionable to me to grow plants in.

The title of this says "10 Gallon Grapes "

https://www.amazon.com/Nonwoven-Aeration-Reinforce-Balcony-Vegetables/dp/B09WH5TQNJ

Anne Miller wrote:
Toko, that is a good question so I asked Mr. Google who gave me these.  Who knew that grapes could be grown in bags?

They are made from that "Smart Fabric" that is questionable to me to grow plants in.

The title of this says "10 Gallon Grapes "

https://www.amazon.com/Nonwoven-Aeration-Reinforce-Balcony-Vegetables/dp/B09WH5TQNJ

Ah!
Any plant can be grown in a bag if it can be grown in a pot - the bag you linked to is to hold the root ball, and some soil medium around the roots. They're popular in hydroponics and growing stuff on your porch.

What I'm talking about, and what I think OP is talking about, is....

After you've grown the grape vines in whatever medium (straight in the ground, in a pot, bag, or planter), and the grape vine has flowered and started to set fruit... you can tie a bag around the grapes that are growing on the vine, to protect the fruit from disease and animals/insects who would eat the fruit. The bags tied around the growing fruit could also protect them from harsh weather like hail.

But, some fruit requires a certain amount of light to hit it, to help it ripen properly & get nice and sweet. So, if you're going to put a bag around the ripening fruit, you have to be aware of its light requirements.