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Hawaiʻi Cropland Shrank From 350,000 to 153,000 Acres

Jeff Melrose, Land-use planner; UH Hilo Spatial Data Analysis and Visualization Lab (SDAV) baseline for the Hawaiʻi Department of Agriculture · USA (Hawaiʻi)

Part of the full session video: this talk runs from 15:50 to 1:29:46. Times below are the video's.

Jeff Melrose, a land-use planner, previews the 2015 statewide map of Hawaiʻi's farms, made with UH Hilo's SDAV lab for the state Department of Agriculture. He stands in for HDOA chair Scott Enright, who was ill. He compares the 1937 and 1980 maps with 2015: about 153,000 acres in crops and 763,000 in pasture, down from 350,000 and 1.1 million in 1980. Then he goes island by island, adds pig and bee maps, and takes questions. HFUU president Vincent Mina introduces him and closes with a pitch for HFUU chapters and membership.

What they found

The question

What is farmed where in Hawaiʻi in 2015, and how does it compare with 1937 and 1980?

How they tested it

2015 statewide agricultural land-use baseline. Vincent Mina says Melrose was contracted by the University of Hawaiʻi. The title slide says UH Hilo SDAV lab for the State Department of Agriculture, with Ryan Perroy as principal investigator. Work took 'the last six, eight months'. The team digitized crops from satellite and aerial imagery: Google Earth (using the time slider to find cloud-free views), WorldView-2, and some recently flown imagery. HC&S and the forestry industry gave their own maps. They also talked with landowners, farmers and agencies, did drive-by ground truthing, and used county real property tax and ag water-rate user data. Only commercial agriculture was mapped, not backyard gardens. By contract nothing under 3 acres had to be mapped, but about 20% of polygons are under a couple of acres. The 2015 map was compared with the 1937 Territorial Planning Board map, the 1980 Agricultural Land Utilization Map (HDOA and Office of Planning), and a pre-contact footprint (The Nature Conservancy and OHA). Pig data (sows by district) came from HDOA's Animal Disease Control Branch. Hive counts came from the state apiary program's voluntary beekeeper registry. Cost and funding amount: not stated.

Results
  1. 2015: about 153,000 acres in crops and 765,000 acres in pasture

    Slide header '153,000 ac in crop / 765,000 in pasture'. Spoken: '153,000 acres, and about 760,000 acres in pasture'. The pie-chart crops add up to 152,050.

    ▶ 32:55 Said and shown on the slides

  2. 1980: 350,000 crop acres and 1.1 million acres of pasture

    Slide header on the 1980 ALUM map. He first says 250,000, then 'Take that back. There are 350,000 acres in crop.' The 1980 legend shows sugar at 255,280 acres.

    ▶ 28:40 Said and shown on the slides

  3. 1937: 34 sugar plantations, 9 pineapple plantations

    1937 legend (low resolution): sugar cane 240,900; pineapple 50,100; pasture 2,076,000; rice/taro 2,950; vegetables/field crops 4,615; banana 1,190; fruits/avocado 1,110 acres.

    ▶ 27:06 Said and shown on the slides

  4. Pre-contact: land that may have fed 500,000 people, 100% self-sufficient

    Pre-contact footprint map from TNC and OHA. He calls it 'informed speculation'.

    ▶ 25:27 As spoken

  5. Statewide crops, 2015 (acres): sugar 38,810; seed 23,940; commercial forestry 22,860; macadamia 21,460; diversified crops 16,890; coffee 10,160

    Pie chart 'Statewide Crop Summary by Acre 2015'. He says sugar 'about 38,000' (HC&S says 36,000 plus mill and edges) and seed about 23,000–24,000. Seed and commercial forestry were not measured at all in 1980.

    ▶ 33:55 Said and shown on the slides

  6. Smaller crops, 2015 (acres): pineapple 4,600; tropical fruits 3,990; papaya 2,820; flowers/foliage/landscape 2,430; dairy 1,850; banana 980; aquaculture 650; taro 610

    Same pie chart.

    ▶ 34:50 From the slides

  7. Wetland (loʻi) taro: 610 acres statewide, down from about 710 in 1980

    Spoken '610 acres of loʻi taro'; '1980, I think there were 710'. The 1980 legend reads 716.

    ▶ 44:11 Said and shown on the slides

  8. Kauaʻi has 450 acres of kalo, about 70% of the state's total; 360 acres are on the North Shore

    Slide on the Hanalei view; spoken 'from Hanalei out to Lumahaʻi'. Kauaʻi legend shows taro 443.

    ▶ 42:51 Said and shown on the slides

  9. More diversified crops grow on Oʻahu's central plain than in the rest of the state combined

    Oʻahu legend: diversified crop 9,862 of 16,890 statewide. Slide 'Ewa to Wahiawa': 7,200 ac diversified crops, 4,000 ac seed, 300 ac banana, 180 ac fresh pineapple. Farmers there work 1,000–3,000 acres at a time.

    ▶ 37:49 Said and shown on the slides

  10. Kauaʻi 2015 (acres): seed 13,483; coffee 3,788; commercial forestry 1,743; diversified 1,199; tropical fruits 463; taro 443; aquaculture 183; flowers 165; banana 26; pasture 41,927

    Kauaʻi crop summary legend (diversified may read 1,799). A&B planted 5,000 acres of coffee; now about a 3,000-acre mechanically harvested operation.

    ▶ 40:02 Said and shown on the slides

  11. Moloaʻa: 324 ac tropical fruit, 300 ac diversified crops

    Began as an early private agricultural park with no residential value in the lots. Later owners won more residential use, and farmland went to houses.

    ▶ 41:30 Said and shown on the slides

  12. Oʻahu 2015 (acres): diversified 9,862; seed 7,365; pineapple 3,515; flowers 482; banana 345; aquaculture 275; tropical fruits 227; coffee 168; papaya 166; taro 51; forestry 26; pasture 18,464

    Oʻahu crop summary legend. Largest banana plantation in the US is on the central plain (named as 'Sugar Land Farms', spelling unconfirmed).

    ▶ 44:32 From the slides

  13. Waiʻanae: about 470 acres of diversified crops, 300–500 acres in sweet basil, exported by air

    Spoken 470; slide says '570 ac Div Crops, 53 ac Foliage/Landscape, two commercial poultry farms, multiple small piggeries, a very small dairy'. Basil, galangal and betel leaf grown mainly by Laotian and Thai growers, flown to Chicago and the West Coast.

    ▶ 47:04 Said and shown on the slides

  14. Maui 2015 (acres): sugar 38,810; diversified 1,582; pineapple 1,094; seed 754; coffee 545; macadamia 186; flowers 134; tropical fruits 104; banana 62; taro 54; forestry 33; pasture 108,448

    Maui crop summary legend. Kula: 1,150 ac diversified crops, 85 ac flowers/landscape, 18 ac tropical fruit, 17 ac banana. The county ag park in Kula, the only county-run ag park in the state, has 20 farmers on 5–20-acre lots.

    ▶ 48:20 Said and shown on the slides

  15. Molokaʻi: 3,537 crop acres on 110,791 acres of state agricultural land

    Slide (draft 2/24/2015): seed 2,493; truck crop/diversified orchard 812; papaya 106; tropical fruits 43; aquaculture 29; flowers 26; taro 3. Seed companies are the largest farmer and ag employer. No varroa mite, ringspot virus or coffee berry borer, so non-GMO papaya still grows there. He says about 100 acres of coffee; the coffee figure on the legend is hidden by the TV logo.

    ▶ 51:10 Said and shown on the slides

  16. Hawaiʻi Island 2015 (acres): macadamia 21,299; commercial forestry 21,062; coffee 5,538; diversified 3,264; tropical fruits 3,159; papaya 2,566; dairy 1,855; flowers 1,614; banana 537; aquaculture 165; taro 61; pasture 556,886

    Big Island crop summary legend. The two biggest uses are macadamia and commercial forestry.

    ▶ 52:05 Said and shown on the slides

  17. North/South Hilo: macadamia 3,000; commercial forestry 3,000; diversified crops 2,000; tropical fruit 1,360; foliage 920; dairy feed corn 170 acres

    Slide. Spoken: about 800 acres of Okinawan sweet potato on the island, virtually all irradiated and exported to the West Coast; 16 million pounds in 2013.

    ▶ 52:45 Said and shown on the slides

  18. Hāmākua Coast: forestry 14,500; dairy 2,000; macadamia 768; tropical fruit 330; diversified crop 200; taro 61; coffee 39; flowers/landscape 22 acres

    Slide. The Big Island dairy just invested $15 million and grows or sources locally about 40% of its feed.

    ▶ 54:30 Said and shown on the slides

  19. Waimea: 500 acres of diversified crops (Lālāmilo and Puʻukapu farm lots)

    Slide. Lālāmilo farmers told him about 50% goes to Honolulu and 50% stays local.

    ▶ 55:30 Said and shown on the slides

  20. North/South Kona: macadamia 6,800; coffee 4,800; foliage/landscape 190; aquaculture 160; tropical fruit 130; diversified crops 35 acres

    Slide. About 20% of all polygons had to be drawn in Kona, the hardest area to digitize.

    ▶ 56:30 Said and shown on the slides

  21. Pasture: 763,100 acres; Hawaiʻi Island holds 73%

    Table: Hawaiʻi Island 556,800; Maui 108,000; Kauaʻi 41,900; Molokaʻi 38,000; Oʻahu 18,400. Pies: Maui 14%, Kauaʻi 6%, Molokaʻi 5%, Oʻahu 2%. Most cattle are still shipped to the mainland.

    ▶ 57:26 Said and shown on the slides

  22. Pigs: 2,189 sows statewide; Oʻahu has 58%

    Slide 'Local Pork Production Summary 2015' (HDOA Animal Disease Control Branch): Oʻahu 58%, Hawaiʻi Island 19%, Maui 11%, Kauaʻi 10%, Molokaʻi 2%, Lānaʻi 0.3%. Heaviest in Waiʻanae and Waimānalo, close to Oʻahu food waste. He says grain costs and wastewater rules have eroded the business.

    ▶ 1:01:13 Said and shown on the slides

  23. South Kona has the most hives (5,501–6,500 per district on the map)

    Draft hive map by district from voluntary registry data. Spoken: Hawaiʻi supplies about 70% of Canada's commercial queen bees. Varroa mite and small hive beetle have wiped out most wild hives.

    ▶ 1:03:10 Said and shown on the slides

  24. 89% of Hawaiʻi Island agriculture is on C, D and E lands; 50% on D and E alone

    Spoken, using Land Study Bureau ratings. Most tropical fruit, cut flowers, macadamia and papaya are in Puna and South Hilo, with no irrigation system, because people can afford land there.

    ▶ 1:11:37 As spoken

  25. HDOA laid off 25 enumerators in 2007; ag data has had a gap since then

    Spoken. 'Agriculture data sucks. We aren't collecting it.'

    ▶ 1:15:04 As spoken

Hold it loosely
  • A preview of a draft. HDOA had not yet seen or accepted it, and the final product was due around the end of October 2015.
  • A one-time snapshot of commercial agriculture. Backyard gardens and orchards were not mapped, and nothing under 3 acres had to be, so small farms are undercounted.
  • Crops were digitized from imagery plus limited drive-by checks. In Kona, coffee, macadamia and fruit trees are hard to tell apart.
  • Some spoken numbers are from memory ('I think', 'I don't have a good number' for sweet potato). Waiʻanae is 470 acres in speech but 570 on the slide.
  • The slides were read off a standard-definition TV copy. The statewide 2015 map legend (e.g. sugar about 44,917, seed about 28,262) does not match the pie chart (38,810 and 23,940); we report the pie, which matches his speech.
  • Pig and bee maps are drafts. Hive counts come from a voluntary registry, and he says the pig map colors still needed work.
  • On policy he says he does not speak for HDOA.
For your farm
  • More than half of the state's diversified-crop acres are on Oʻahu's central plain, next to the market. He argues neighbor-island farms do better selling into their own communities than competing for Honolulu.
  • Who owns the land, and whether it carries house value, shapes whether farming lasts. His examples are the Moloaʻa lots and the Kula county ag park.
  • Poorer C, D and E land in Puna and South Hilo still carries most of Hawaiʻi Island's agriculture, because small parcels there are affordable.
  • With wild hives gone, managed hives matter more for pollination, for example in macadamia.
  • Filling out NASS surveys helps small Hawaiʻi farms show up in the data. He asks people to back NASS's effort to fit small operations.
  • The maps were to be posted by HDOA and the Office of Planning as a GIS layer and possibly a KMZ for Google Earth.

Next to Master Cho's teaching

  • Goes further

    Pig farms run on waste ponds and wastewater rules Melrose says wastewater rules helped erode Hawaiʻi pig farming. Cho's natural piggery uses deep IMO bedding with no washing, no odor and no runoff, so it needs no waste pond. Melrose does not mention this approach.

    2017/Advanced Cho/swine/IMG_1490 @ 0:04:08 (translated)

  • Agrees

    Sweet potato on bare, unturned ground, rows up and down the hill Melrose flags erosion-prone practice (no cover crop, downhill rows). Cho's Advanced text says to cover sloped fields with grass in heavy-rain season to prevent erosion. That passage is a machine translation.

    CGNF Advanced (2006.02) (English translation), p. 32

“Who owns the land matters.”

▶ 36:46

“In the old days, you could hear it before you saw it. Now you gotta see it before you hear it.”

▶ 1:04:07

“It's not a one thing, it's a many thing.”

▶ 1:04:36

“Agriculture data sucks. We aren't collecting it.”

▶ 1:14:45

“It's a menu, not a meal.”

▶ 1:19:59

In this talk

  1. 15:50Vincent Mina introduces Jeff Melrose
  2. 16:31Standing in for Scott Enright; Melrose's background
  3. 18:23Ryan Perroy, SDAV and the 2012 Hawaiʻi County baseline
  4. 22:15How the map was made
  5. 24:01What a baseline is, and isn't
  6. 24:45Before contact: land that may have fed 500,000
  7. 26:001937: plantations at high tide
  8. 27:301980: the last statewide map
  9. 28:54Sugar collapses, landownership fractures
  10. 31:552015: 153,000 crop acres, 765,000 pasture
  11. 33:50Statewide crops by acre
  12. 35:52Lessons: place, ownership, Central Oʻahu
  13. 39:00Kauaʻi: Moloaʻa and Hanalei kalo
  14. 44:25Oʻahu: the central plain and Waiʻanae basil
  15. 48:10Maui: HC&S and Kula
  16. 50:55Molokaʻi
  17. 51:59Hawaiʻi Island: Hilo, Hāmākua, Waimea, Kona
  18. 57:22Pasture by island
  19. 58:03Question: vegetables vs. pasture
  20. 59:43Pig farms by district
  21. 1:02:48Bees and the wild-hive collapse
  22. 1:04:20Agriculture is many things
  23. 1:05:13Q&A: data sources, policy, exports, map release
  24. 1:09:58Q&A: Puna, land ratings, koa
  25. 1:13:51Q&A: ag data and NASS
  26. 1:17:12Q&A: land prices and subdivision
  27. 1:19:16Q&A: what would you do as governor?
  28. 1:22:32Q&A: irradiation, ahupuaʻa, imported bananas
  29. 1:24:16Vincent Mina: HFUU chapters, nutrient density, membership

Transcript

Transcribed and checked by hand against the recording. Click any time to play from there.