Why Gannan Navel Oranges, Once a Path to Prosperity for Farmers, Are Harder to Grow Than Before
Last year, Foodthink published an article 《Taking an Internet Celebrity Home to Sell Navel Oranges: Only Then Did We Realise How Tough Life Is for Fruit Farmers》. In it, Fengche, who works in Guangzhou, shares her story of returning to her hometown to help sell oranges for her family, which also brings to light the various issues currently plaguing the navel orange sector, from production to sales.
This past May, I was fortunate enough to visit this mountain village and explore the famed growing region for Gannan navel oranges. Following in-depth conversations with local growers, I discovered that the very crop that once paved the way to prosperity for farmers has grown increasingly difficult to cultivate and yield a profit.


I. Thirty Years of Ups and Downs with Navel Oranges
It was another four or five years before other villagers saw the profits navel oranges could bring and began to follow suit. When land was allocated to households under the responsibility system, families received patches of forest land. Without excavators or other heavy machinery, villagers had to rely on their bare hands and rudimentary tools to hack away the existing trees, clearing and preparing the land inch by inch to plant oranges.
In the early stages of navel orange promotion, the primary sales channel was indeed exports, meaning prices were naturally far higher than in the domestic market. As early as the 1990s, navel oranges could sell for more than two yuan a *jin*. At that time, households also grew other fruit trees, such as honey peaches, Sanhua plums, and Nai plums. However, navel oranges offered large yields, were robust in storage and transport, and enjoyed better market access, ultimately leading to a situation where they came to dominate the landscape.

II. Huanglongbing and Citrus Decline Disease
At its peak, this small village of just over thirty households could harvest more than two million jin (one thousand tonnes) of navel oranges; today, production has fallen to just over a million jin. The primary driver behind this decline is the emergence of Huanglongbing around 2010.
Huanglongbing is a tree disease caused by a phloem-living bacterium vectored by the citrus psyllid. Infected trees develop yellowing leaves, from which the disease derives its name. Although fruit quality deteriorates, infected trees do not perish immediately. Instead, they gradually wither over several years, while the pathogen spreads to neighbouring orchards alongside the psyllids. Moreover, because commercially available pesticides cannot eradicate the disease, it is widely dubbed “the cancer of citrus”.
Given its infectious nature and the fact that the entire growing region was planted in large, contiguous blocks of a single crop, the disease spread rapidly. Taking the Feng Che family’s orchard as an example: most of their trees are located along the roadside, bordering adjacent groves, and roughly a third of them were successively infected. Conversely, a smaller plot set deeper into the forest—though requiring a long walk and making harvesting inconvenient—was spared by its isolation. It has never seen a diseased tree and has consistently delivered good harvests.

Unfortunately, most orchards do not enjoy such a natural physical barrier. Some growers choose to drape a fine-mesh insect net over their trees to stop psyllids from reaching and infecting them. But as the owner of one such net points out, the expense is no small matter: covering more than 10,000 square metres of orchard required a one-off outlay of over 100,000 yuan. As a result, while this method has been introduced elsewhere in Gannan, the majority of local growers are still reluctant to put up the nets.


Insect-proof nets are merely a preventative measure. Once a tree is infected, the only reliable course of action is to fell it promptly to stop the pathogen from spreading. Around 2015, Huanglongbing (citrus greening disease) had become rampant in the village. Because infected trees still yield some fruit in the early stages, growers are often reluctant to cut them down. In response, the local authorities issued repeated directives, mandating the immediate felling of any tree showing signs of the disease. At one point, the government even mobilised civil servants to travel to the countryside and assist farmers with the culling.
Official documents note that since 2012, the county has invested considerable resources in containing the disease. To date, the outbreak can only be described as ‘under control’ rather than eradicated. While infected trees are rarely visible in individual orchards today, conversations with growers reveal that Huanglongbing has by no means disappeared.
Of the more than 800 trees planted by the farmer, over 300 have been cut down and replanted, with this year marking the fifth planting cycle.

However, the newly planted saplings have brought their own set of complications.
The farmer recalled that initially, the quality of saplings on the market was highly inconsistent, and growers often bought and sold them among themselves at local fairs. Yields only began to rise steadily after the government started introducing superior stock. Yet following the Huanglongbing outbreak, since virtually all local nursery stock carried the pathogen, authorities were forced to import new saplings from other regions. Unfortunately, these outsider trees carried a host of other viruses, meaning that before one disease was fully dealt with, another took its place. Around 2017, a severe outbreak of decline disease hit the area.
Decline disease is also contagious. Infected trees struggle to grow tall and are locally known as ‘little old trees’. Some growers initially blamed poor sapling quality before realising it was a disease. The virus disrupts nutrient transport, leaving branches brittle and prone to snapping; even the main trunk becomes as fragile as a twig. Even when these trees do bear fruit, the harvest tends to be small and misshapen. A 2011 survey by Gannan Normal University found that the infection rate of decline disease among Gannan navel oranges reached as high as 44.9 per cent.

III. Orchards Set Back by Decline Disease

“Folk round here know the value of hard work. Even a light drizzle won’t keep us from the orchards; only a heavy downpour earns us a day off,” Fengche remarked.
The orchards run on a relentless, year-round schedule. From spring through to the November harvest, the endless cycle of fertilising, spraying, and tending the trees leaves growers with barely a moment to spare. Once the picking season begins, they’re straight into harvesting, selling, pruning, and clearing the grounds. And just like that, amidst the non-stop labour, it’s already time for the Lunar New Year.
Yet for all this diligence, these same growers have lost hundreds of thousands of yuan on their navel orange crops.
My uncle led us up to the orchard-covered slopes. The view was striking: the contrast between the newly developed plots and the older orchards was stark. Several hilltops had been graded into terraces by heavy machinery. The young trees had only been planted recently, leaving the characteristic red soil completely exposed at their bases.

As it turned out, the secretary’s success wasn’t easily replicable. He returned home right as citrus decline disease was breaking out. With no prior experience in selecting saplings, every single one of those initial 1,700-plus trees came infected. The symptoms aren’t obvious in the first year, but by the second and third, he gradually realised the extent of the problem. Trees that wouldn’t grow past a certain size were of no use, so they had to be felled and replanted.
So how many healthy saplings had actually survived from that first year?
“Hardly any at all.”
This is now his sixth year back farming oranges, and he has only just finished swapping out the infected stock. On top of that, the new trees won’t bear fruit for at least another three years. In short, he hasn’t managed to sell a single orange over the past few years. Despite the hardships, he still carries himself with a quiet optimism.
“We didn’t invest that much. We only lost around half a million yuan. I knew a deputy factory director who put in over two million.”
As he spoke, he fetched a few navel oranges he’d been storing over the winter to share with us.
“These came from the infected trees. I saved them for our own eating.” The fruit tasted fine, but the oranges were undersized and wouldn’t fetch a decent market price.
IV. Soaring Costs of Agricultural Inputs



Therefore, Fengche believes that helping farmers cut back on chemical pesticides and fertilisers could be mutually beneficial. Fengche’s younger brother already makes his own liquid fertiliser at home and uses cow manure for composting. This allows him to replace some chemical and foliar fertilisers, shaving down fertilisation costs.
V. Epilogue
Fengche, meanwhile, is already in motion. The Shengeng Social Work Service Centre, where she works, has decided to pilot a project in the area and will soon be hosting a local seminar on navel orange cultivation techniques. For Fengche and her colleagues, this marks a modest first step in supporting the orchardists. For an ageing production region that has weathered many storms, it may well be time to breathe some fresh vitality into it.
References:
Tao Zhenzhen, Yi Long, Lu Zhanjun, et al. Investigation on the Incidence of Citrus Decline Disease in the Main Production Areas of Gannan Navel Oranges [J]. Chinese Agricultural Science Bulletin, 2011, 27(16): 297-300.

All images in this article are courtesy of the author
Editor: Tianle
