Saving California Citrus Means Thinking Outside The “Carton” [Opinion]

The California citrus industry is bracing for its toughest battle yet — the Asian citrus psyllid (ACP) and Huanglongbing (HLB), an incurable plant disease that is destroying the citrus industries in Florida, Brazil, Mexico, and now Texas.

The stakes are high. In Florida, more than 90% of commercial citrus trees are estimated to have HLB — where it’s sometimes called “citrus greening” — and the impacts to the industry and state are staggering.

The industry has endured a 70% (and growing) decline in production causing an economic impact in excess of $7.8 billion and more than 7,000 lost jobs. It’s a stark contrast to the vibrant California citrus industry that has persevered through drought, freeze, and onerous laws and regulations.

Asian citrus psyllid (ACP) is an enthusiastic hitchhiker. The pests are most frequently found along major traffic corridors such as Highway 99.
Asian citrus psyllid (ACP) is an enthusiastic hitchhiker. The pests are most frequently found along major traffic corridors such as Highway 99.

But we are not immune to HLB or the devastation it causes. The industry has faced this issue head on. When the psyllid was first discovered in California in 2009, growers supported legislation that mandated an assessment and created the Citrus Pest and Disease Prevention Program.

Since 2009, growers have invested more than $100 million into the program to stop the spread of ACP and prevent HLB from taking hold. Because of this investment, not in spite of it, HLB has now been detected in 30 residential citrus trees within a small geographical area in the Los Angeles Basin.

Public Relations Is Key
Outreach and education to homeowners has been a critical component to the multi-million-dollar program. There are more citrus trees in backyards than there are in commercial production, and it’s no coincidence that the highest level of ACP populations are in dense urban areas.

Extensive survey work, trapping, and research has lead us to the proverbial needle in the haystack. Education to consumers via billboard signs, public service announcements and various forms of advertising are measurably effective.

When the California Department of Food and Agriculture (CDFA) knocks on a homeowner’s door to tell them their tree is infected with HLB and must be removed immediately, the response is by and large positive.

When ACP is discovered near a commercial citrus grove and CDFA goes door to door in the surrounding neighborhood to treat residential trees, rarely does a homeowner refuse. This is evidence of a successful program.

The reality of additional HLB-positive trees is imminent, but when compared to the Florida narrative, California is ahead of the curve.

The insect and now the disease have spread at a rate far slower than elsewhere in the country and world where other citrus industries were not as proactive as our citrus industry has been. California citrus growers should be commended for their forward thinking, diligence, and optimism.

The Battle Is Far From Won
Recently California Citrus Mutual facilitated grower meetings in each of the state’s citrus production areas to evaluate the effectiveness of current efforts and identify opportunities for improvement. Balancing the priorities and needs of an industry as large and geographically diverse as that of California citrus is a challenge, but on this issue the industry is united — we must take every action to stop HLB from spreading.

From growers and shippers to field workers and truck drivers, every level of the industry must work together to stop the ACP and HLB. With harvest season now in full swing and a steady flow of traffic in and out of the field, conditions are ripe for the ACP to spread.

That is why the industry has adopted a train-the-trainer program to educate field crews about best practices to prevent the movement of plant material between harvest sites. This is especially important given the recent detection of HLB in Mexicali, 23 miles south of the U.S.-Mexico border.

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2 comments on “Saving California Citrus Means Thinking Outside The “Carton” [Opinion]

  1. Errata: The first Asian citrus psyllid was detected in California in August and confirmed by taxonomists in September of 2008, not 2009.

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