In 2012, Mr. Tran Thuan Khanh (43 years old, living in Son Dinh commune, Cho Lach district, Ben Tre ) accidentally discovered a new kumquat variety crossbred from a seedless lemon tree and a regular kumquat tree.
Mr. Khanh's seedless kumquat is a mutation from regular kumquat and seedless lemon.
This type of kumquat has a similar appearance to the seeded kumquat that farmers have grown up to now. The fruit is round, has green skin, orange-yellow segments but has no seeds inside.
"Maybe because I planted lemons and kumquats close together, they cross-pollinated, resulting in a new kumquat variety. Knowing that this was a 'heaven-sent' variety, I found ways to graft and layer... to propagate it," Khanh shared.
The kumquat garden helps the farmer earn over 200 million VND/year.
After testing many methods, the farmer determined that grafting helps seedless kumquat trees retain their dominant traits and have higher yields than grafting.
"Growing seedless kumquat trees takes 6 months to a year to harvest, and the fruit bears fruit all year round. The yield is 50kg/tree/year," Khanh introduced.
Since 2019, Mr. Khanh has developed a 5,000m2 seedling garden to produce seedlings. Currently, with 1,200 trees, he supplies 50,000 seedless kumquat trees, priced at about 150,000 VND/tree. Seedless kumquats alone cost 120,000 VND/kg, ten times higher than seeded kumquats.
Currently, Mr. Khanh has an income of over 200 million VND/year from selling seedlings. The quantity of commercial fruits is still small, not enough to supply the market, but mainly provided to customers who buy plants for trial use.
According to the author of the seedless kumquat, this kumquat variety will help consumers and processing facilities for salted kumquats and kumquat jam save time because there is no need to remove the seeds. In addition, this product can be sold in supermarkets, which is also Mr. Khanh's development direction in the near future.
The layering method helps to preserve the advantages of seedless kumquat.
Recently, the Department of Agriculture and Rural Development of Ben Tre province recognized Mr. Khanh's seedless kumquat tree as the parent tree.
He currently supplies more than 50 members of Long Thoi Agricultural Cooperative, with each gardener supplying over 1,000 trees. When the trees bear fruit, Mr. Khanh will purchase the commercial fruit for the farming households.
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