Passion fruit on aging dragon fruit fields: does grade-based purchasing work for procurement?

Along the coast of Lam Dong province, Vietnam, the posts of dragon fruit that had entered their 7th-8th year were pulled up and passion fruit trellises put up on the cleared land. According to the local paper Nong nghiep va Moi truong (22 July 2026, reporter Kim So), the 0.5 ha of Huynh Van Dau, a farmer in Tien Thanh ward, yielded about 3 tonnes in its first bearing six months after planting and sold at 30,000-40,000 VND per kg (about 185-247 yen). In Ham Liem commune in the same province, a contract that writes in minimum purchase prices by grade is attached to 9 households across 4 ha. What Japanese procurement staff should pick up is not the birth of a new origin. On the premise that Vietnamese passion fruit fresh fruit still cannot be brought into Japan, the question is how to make use of this shift.

What happened on half of the 1 ha where old trees were pulled up

Mr. Dau has 1 ha. It was originally all dragon fruit. As the trees aged and stopped paying, he cut down half. He sowed sesame and planted beans on the cleared land, but the returns were thin and it sat idle. The remaining 0.5 ha was also in its 7th-8th year, with falling yields and unstable prices. The article begins from that impasse.

What went into the vacated 0.5 ha was Hoang Kim huong oi (VN77), a yellow-type variety of Taiwanese origin. Trained on a U-shaped trellis with 4 m between rows and 1.5 m between plants, with piping that integrates water-saving irrigation and liquid fertilizer run to the base of each plant. Pest control centers on biological pesticides, and fertilization makes fully matured compost the main player while holding back chemical fertilizer. The only things to watch for, he says, are root rot and powdery mildew. Mr. Dau himself estimates reaching 40 tonnes per ha over a two-year cropping cycle.

The buyers were collectors in Nha Trang and Ho Chi Minh City. The original text writes, as Mr. Dau's account, that the first bearing went to collectors in these two cities at a high price of 30,000-40,000 VND/kg and that everything he brought in was taken. Buyers rate this area's passion fruit as superior in quality to other origins, with a clean sweetness, he says. The article does not carry Mr. Dau's words in direct quotation. The remaining 0.5 ha is also to be pulled up soon, he says.

The fields that lost 8,000 ha in five years, and the trellises put up on them

The reason this shift is not one person's whim shows in the origin's numbers. Both Tien Thanh ward and Ham Liem commune are part of the merged Lam Dong province (former Lam Dong + Dak Nong + Binh Thuan) launched on 1 July 2025 under Party Central Resolution No. 60, land that until then was Binh Thuan province. The former Binh Thuan province's planted area was about 26,000 ha at the start of 2025, and it was over 34,000 ha five years earlier, so nearly 8,000 ha disappeared. Output also fell from close to 600,000 tonnes a year to about 500,000 tonnes, Thanh Nien reports. Exports are even starker: January-November 2025 came to US$485.2 million (about 79.1 billion yen at roughly 163 yen to the dollar), down 0.8% year on year, the lowest since 2014.

Passion fruit, on the other hand, had export value of over US$222 million in 2024 (about 36.2 billion yen). National planting is just under 9,500 ha by Ministry of Agriculture and Environment statistics, and output is 160,000-190,000 tonnes a year, not even reaching one province's worth of dragon fruit. Exports to China began with a trial shipment in July 2022, and the framework was formalized when a phytosanitary protocol with China's General Administration of Customs was signed in April 2025. This is the background to the proviso "Grade 1 is for export" attached to the purchase prices.

Reading the economics and risks of the switch in numbers

The last row captures the character of the contract. The Grade 1 floor of 20,000 VND is only half to two-thirds of the 30,000-40,000 VND Mr. Dau is now getting on the open market. The contract is not a tool for capturing the upside but insurance against the downside is how it is designed. What a farmer fears right after switching crops is not missing a high price but prices collapsing two years later so that the investment cannot be recovered.

The investment amount is given too. Nguyen Van Thiem of Ham Chinh village, Ham Liem commune, put nearly 100 million VND, roughly a little under 620,000 yen, into 3 sao (about 3,000 square meters by southern convention). On a per-ha basis that is on the order of 2 million yen. But the trellis reused the old dragon fruit's concrete posts, stringing wire at 2 m high. The switch is fast in part because the previous crop's framework can be used as is.

Extension center, technician, farmer: a gap in temperature among the three

Nguyen Duc Tien, deputy director of the Lam Dong Provincial Agricultural Extension Center, explained the history of stacking up crop-conversion models on low-yielding paddy fields and said, "Every model produces high yields, saves water, keeps pests and diseases in check, and brings profit more than 20% higher than conventional cultivation. Now many areas in the province's southeast are voluntarily expanding the area, and a sustainable direction has opened up." This "more than 20%" is the record for models in general, including paddy conversion, not a figure for passion fruit alone.

The guidance from on-site technician Luong Thi Anh Dao is detailed. Rub off the rootstock buds and secondary buds to concentrate nutrients on a single main shoot; drench newly planted stocks at the base with a Trichoderma preparation and humic acid after prolonged rain; and keep up irrigation once clear weather returns. The fact that this level reaches a garden only about 10 days after planting bears on the feasibility of Japan-bound procurement discussed below.

The farmers are not in step. Mr. Dau has already experienced a harvest, but Mr. Thiem's garden is only about 10 days from planting, and the article writes only that the family is confident of success without reporting results. It is premature to read 9 households and 4 ha as a proven origin.

The door for fresh fruit is closed: the order Japanese procurement should take

This is the heart of the matter. Fresh Vietnamese passion fruit still does not enter Japan. In Ministry of Agriculture, Forestry and Fisheries materials, the request to lift the import ban was received in July 2016, and no progress since has been made public. For the same Vietnam, dragon fruit was cleared on condition of vapor heat treatment, the white-fleshed variety in 2009 and the red-fleshed variety in January 2017. The crop whose exports are thinning has a door to Japan, and the crop that is growing has no door- this twist persists.

What Japanese buyers can touch is limited to processed forms such as frozen pulp, IQF, puree, NFC juice and concentrate. This route has depth: Nafoods Group, which claims the top position in Asia for passion fruit concentrate, ships to markets including Japan with ISO, BRC, halal and kosher certifications in hand (Vietnamese produce's 3.65-billion-dollar first half: why Japan's sourcing moves beyond fresh）。

This grade structure shows the Japanese side a concrete entry point. Grade 1 is for export with a floor of 20,000 VND, Grade 2 is for the domestic market at 15,000 VND (about 93 yen), and Grade 3 at 10,000 VND (about 62 yen). Only Grade 1 goes through to China as fresh fruit; Grades 2 and 3 are sold domestically. What Japan buys as a processing ingredient is this Grade 2 and Grade 3 economy. The stronger the fresh-fruit demand for China, the more Grade 1 is drawn off, and the lower grades are relatively left over. An overheated fresh-fruit market is not necessarily a headwind for Japan's processing procurement.

Conversely, care is needed about the contract's effectiveness. The gap between 30,000-40,000 VND on the open market and a 20,000 VND floor becomes an incentive for diversion in a boom phase. Contract farming works when prices fall, and there is no guarantee the contracted volume will be assembled when prices are high (A chili that sells out as soon as it is picked: contract farming opens up Vietnamese spice raw materials). If you want to secure volume, the order is to partner not with the field but with the collection and processing side.

The shortness of the cropping cycle also changes procurement design. Dragon fruit aged over 7-8 years, but passion fruit comes full circle and is replanted in two years. The field of a partner you sign a three-year contract with will, by calculation, be replanted more than once during the term. The idea of fixing traceability by plot is hard to sustain, and tying it to the cultivation records of producer groups and the extension center becomes realistic. The scheme of subsidizing 50% of seedlings, fertilizer and pesticides, put the other way, means a record of what was applied and when remains on the public-funding side. It can be used as audit material for residue standards.

Toward a crop of just under 10,000 ha, 26,000 ha of conversion-candidate land is pointed

The ripple into the market becomes visible when the areas are placed side by side. National passion fruit planting is around 10,000 ha. Against that, the former Binh Thuan province alone still has about 26,000 ha of dragon fruit. If just 10% converted, that is 2,600 ha, adding 20-30% to the national area. And it is six months to first harvest. The time until supply jumps is nothing like that of durian or coffee.

This arithmetic cannot rule out the possibility of prices collapsing in two years. That is precisely why the extension center, before stoking the area, has laid down long-term purchasing, quality standards and traceability. Mr. Tien said, "Going forward, the center will advance technology transfer as a package, strengthen value-chain linkage to raise yields and competitiveness, and improve farmers' livelihoods," and as an order of operations that holds together.

There is a precedent for the attempt to escape, through a move to protected cultivation, the structure of being at the mercy of unit prices and disease in the open field (Fewer pests and a higher unit price: the double benefit of growing Vietnamese passion fruit in a greenhouse), and reading the changeover of crops as a reassignment rather than an origin's defeat is closer to the reality.

Practical information to secure before negotiation

If you visit, the contacts are not the producers but the two parties of the extension center and the purchasing company. The harvest period can be worked backward from the fact that planting in Ham Liem commune was around 10 July 2026.

Summary: before buying, go see the records

A scale of 9 households across 4 ha is small as a container-level supplier. Even applying Mr. Dau's expected 40 tonnes per ha, that is 160 tonnes over two years, no more than 80 tonnes of fresh fruit a year on an annual basis. Evaluating this as a supplier is the wrong order. What should be read is rather the fact that a 26,000-ha reserve army for crop conversion has started moving, accompanied by contracts with minimum prices by grade.

There are three things the Japanese side can start on first. One, re-examine the origin breakdown of your existing passion fruit raw material and check which processors the new area in southeastern Lam Dong province flows to. Two, share with product planning the premise that fresh fruit is not yet cleared, and design in processed forms before building a plan around fresh produce. Three, place the subsidized-project fields, which keep records of inputs applied, as priority candidates, and check directly with the extension center whether they can be used as audit material for residue standards.

The moment aging fields are swapped out is good for gauging an origin's capability. Land where only the crop can be replaced while the posts stay has a fast next move, too.

References: Nông nghiệp và Môi trường／VietnamBiz／Thanh Niên／Ministry of Agriculture, Forestry and Fisheries／VIETJO／Báo Đầu tư／Nông nghiệp Việt Nam／Nafoods Group／VIETJO (lifting of the ban on Vietnamese dragon fruit)