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Buhler tech enabling Specialty Crop Co to reduce sorting costs by 90%
Thursday, 06 December, 2018, 12 : 00 PM [IST]
Bühler technology is enabling the world’s largest fig grower, the Specialty Crop Company, to double its processing capacity to 20,000lb per hour and reduce the increasingly expensive costs associated with sorting by up to 90 per cent.

The Sortex F optical sorter is helping the company, which is based in California and was founded by Kevin and Diane Herman in 1989, to provide its customers with dried figs that are free from damage and foreign material, including wood, rocks, puncture vines, bird pecks, sunburn and mold.
Although figs are Specialty Crop’s main product, they successfully grow kiwi, persimmons and pomegranates too. Additionally, they experiment with other produce, and at the moment, are attempting truffles and goji berries. Remarkably they also farm almonds, pistachios and walnuts, and are ranked among the world’s top 25 nut growers.
“I come from a small farming family, as does my wife,” Kevin said, adding, “When I graduated college, I went to work for a farm management company, before starting my own. Over the years, the business has evolved. There’s now an even balance between owning, leasing and managing our farmland.”
Leader in dried fig production
Speciality Crop’s ranches are located in California’s Madera and Merced counties. “Our company mission is to provide consumers with healthy food that is sustainable and tastes great. We farm about 8,000 acre, and about half of that is given over to figs. I have been growing figs for a long time,” Kevin admitted.
Some 5,500 tonne (of the industry’s 10,000 tonne) of figs a year are processed at Specialty Crop’s Madera plant. They consist of five main types – Mission, Conadria, Sierra, Tiger and Brown Turkey – and a fifth of the crop is grown organically. About 90 per cent of Speciality Crop’s dried whole figs are sold to leading buyers in the United States.
Kevin described his business as primarily a grower, not a processor. He added, “At this point, we are really just a farmer, but we are becoming more and more vertically integrated. Working with Bühler and installing the Sortex F has taken us a step further in that direction.”
Superior FM and defect detection
Food safety is extremely important for Specialty Crop, as is quality. Kevin said, “My customers have zero tolerance for foreign materials, as their products are used for making pastes, concentrates and diced figs, which go on to be used in foods such as cereals, jams, sauces, fillings and the famous Fig Newtons cookies.”

He added, “For consumer pack varieties, aesthetics as well as safety is important. This is why the Sortex F is vital for our business.” 
“Our figs are harvested from the field and brought straight onto the cleaning line. The contamination rate is about 15-20 per cent, three quarters of which is because of foreign materials (FM) and a quarter due to defects. Harvesting entails gathering figs off the orchard floor, so a lot of FM is brought into the plant with the figs. FM include small pieces of wood, rocks, sticks and the barbed seeds from puncture vines (tribulus terrestris), that can grow in orchards,” Kevin said.
“The figs can also be imperfect. For example, they can be smashed or have dark spots, or blemishes caused by bird pecks or weather-induced mold – or even sunburn in hotter years. After mechanically cleaning the product, the contamination entering the sorter is around 8-10 per cent,” he added.
Quality assurance – Vastly-reduced labour costs
As Kevin stated, quality control requirements can vary from one fig variety to another. “As a grower, I must meet an incoming tolerance, but the packer must meet a much more stringent outgoing tolerance level,” he added.
“And if we’re dealing with whole figs, going into a consumer package directly, they must look perfect. For paste and industrial use, tolerances for defects are greater, since they can be ground up and still used,” Kevin said.

“FM aren’t allowed, and neither is mold. The sorting criteria are easy to set up on the Sortex F and the sensitivities settings can be adjusted, so that I can easily meet my customers’ specifications,” he added.

“Besides this, we can now do it with three hand sorters instead of needing 24. Before we got the sorter, some figs with defects were getting through our handpicking tables. But not anymore, so customer complaints are down,” Kevin said.
Farmers have been struggling with a shortage of workers and increasing labour costs, so to be able to stay in their line of business, they are having to look for alternative solutions.
Kevin said, “We have 150 employees throughout the year, but need up to 700 during harvest. Finding employees has become difficult and it is also getting more expensive to employ them.”

“Bühler’s sorting technology has enabled us to keep our labor cost under control, plus I can trust the Sortex F to accurately and reliably sort our figs 24/7,” he added.
Double capacity – Peerless customer service
Kevin said, “We are always looking to improve our processes with reliable, innovative technology that can bring benefits to us and our customers. And we wouldn’t be without the Sortex F, as it has enabled us to achieve far higher yields, with much less rejection of good product, while delivering a greater accept quality.”
Stephen Jacobs, business development manager, North America, Bühler Group, said, “The advanced camera technology used on the Sortex F can reliably differentiate between a good product and a bad one, enabling problematic FM and defective product to be accurately removed,” he added.
“Furthermore, Specialty Crop’s choice to invest in the larger F2 model has enabled them to sort 20,000lb (9,000kg) of figs per hour – twice what they were able to sort previously,” Kevin stated.
So, why did Kevin choose Bühler’s Sortex technology? “We grow almonds and I was talking to a few almond handlers about our issues when sorting figs. One of them suggested that I talk to Bühler. I’m delighted I did, because the technology is fantastic and their customer service is peerless,” he added.
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