Agronomy
Idaho and Slovenian trials show deeper planting and wider ridge tops reduce field greening of tubers. But planting at 23 cm cut yield in two Russet varieties, and late hilling also lowered yield.
Studies collected in a 2025 review show potatoes after vetch, faba bean and other legumes yielded 12.7–38% more than after winter wheat, while oats…
Field trials at Salt Farm Texel in the Netherlands found that Desiree and Diamant kept 90% of yield at soil salinity well above the…
An AHDB guide and Oregon State University Extension show that brassica cover crops can suppress potato cyst nematodes, but only with high biomass, flowering-stage…
Trials in Washington State and Idaho show gibberellic acid on seed pieces doubles stem numbers and shifts crops to small tubers. Low doses raised…
University of Idaho and Washington State research shows that cold soil, excess water and uneven nitrogen at tuber initiation start brown center and hollow…
AHDB, the University of Maine and the PNW handbook show why powdery scab and potato mop-top virus stay in soil for a decade or…
Wageningen trials, PotatoWorld guidance and a Florida spacing study show that plant density, stem number and variety decide how many tubers end up in…
Labels, trials and skin biology all point one way: digging three days after diquat turns the lot into processing stock at best — and…
Montenegro harvested 32,588 tonnes of potatoes on 1,914 hectares in 2025. Output has stayed between about 31,700 and 36,100 tonnes a year since 2015,…
NDSU, the French seed potato sector and a 2024 Texas study show how soil heat above 24–25°C stops tuber growth and causes knobs, chains,…
Clods that end up on the harvester and in the store are mostly made at spring cultivation on wet soil. UK, Irish, Belgian and…
University of Minnesota guidance advises boron for potatoes only on soils testing 0.4 ppm or less, applied to the soil. Florida advises 1.5 lb…
A 2025 Indian field study sets the critical soil magnesium level for potatoes at 42 mg/kg. University of Minnesota guidance advises magnesium on soils…
Extension specialists say potato seed should go into soil of at least 45°F (about 7°C) and rising. In colder soil, emergence slows sharply and…
Simulated hail trials in Washington and Colorado show that potato yield loss depends on both defoliation level and growth stage. Total loss of leaves…
A study of 105 field trials found that potato yields fell 12% to 61% when weeds were not controlled. The farm-gate loss would reach…
An AHDB review shows chitting cut time to emergence by 8–10 days and can bring maturity up to two weeks earlier. A 2024 study…
In a Manitoba rotation trial, potato-canola yielded 95 cwt/acre less than three- and four-year rotations, and vascular wilt hit most plants. Other studies show…
A 70×30 cm layout gives about 47,600 plants per hectare. That means 0.84 kg per plant for 40 t/ha and 1.26 kg for 60…
Farmers in Nilfamari district have started planting early potatoes. The district plans 22,700 ha of potatoes, including 8,300 ha of early crop, and growers…
A meta-analysis of 132 studies found drip irrigation gives the best water productivity for potatoes. Under water-saving regimes, drip lost 15% of yield against…
University of Wisconsin trials link higher tuber calcium to fewer cases of internal brown spot and hollow heart. Split calcium doses during bulking gave…
A review for the UK potato levy board found compaction cut yields in 13 of 16 trials. Wheel loads above 3.5 tonnes and high…
Field and glasshouse studies show that trap crops and brassica biofumigation can reduce potato cyst nematodes, but results range from 30% to almost 100%…
Eleven on-farm trials near the Great Lakes found that potato response to phosphorus falls as soil phosphorus rises. An earlier Minnesota study showed that…
FAO data show a gap of more than ten times between the highest and lowest national potato yields. Research led by the International Potato…
Monsoon rain and Hurricane Polo have slowed field work and planting permits in northern Sinaloa, an important potato area. Dams are fuller than a…
A provincial seminar in Miramar heard that potato growers in south-east Buenos Aires spend US$7,000–9,000 per hectare, while income is still below costs.
Spain produced 1.94 million tonnes of potatoes in 2025, 44% of them in Castilla y León. In January to September it imported 889,446 tonnes,…
Lower Saxony harvested 6.6 million tonnes of potatoes in 2025, about 47.5% of the German crop. Since 1961 German potato area has fallen by…
Greece grew potatoes on about 65,000 ha in 1980 and on 10,540 ha in 2024. In 2024 it imported 254,144 tonnes of potatoes, 60%…
Romania harvested 1.16 million tonnes of potatoes in 2025, down from 1.60 million tonnes in 2020. Yields stay near 15 t/ha, and the state…
Portugal grew potatoes on about 108,000 ha in 1961. Eurostat now shows 14,470 ha for 2026, and the country covered only 58% of its…
Poland grew potatoes on about 2.8 million hectares in 1961 and on about 196,000 ha in 2024. Yields rose to more than 30 t/ha,…
South Africa harvested 2.62 million tonnes of potatoes in 2024, eight times more than in 1961. At the same time the number of commercial…
Niğde, Kayseri, Konya, Afyonkarahisar and Sivas produced 3.7 million tonnes of Turkey's 6.9 million tonne potato crop in 2024. Output has grown almost fivefold…
Issyk-Kul region produced 35.4% of Kyrgyzstan's potatoes in 2023. National output rose from 362,000 tonnes in 1992 to more than 1.4 million tonnes in…
After-cooking darkening depends on the balance of chlorogenic and citric acid in the tuber. Variety matters most, but soil, nutrition and storage time can…
Without a haulm topper or with the weather closing in, many growers lift potatoes under still-green foliage. Extension research on skin set shows where…
When the harvest outruns storage capacity, a field clamp can buy time instead of selling at the seasonal low. FAO guidance and classic clamp…
Digging in waterlogged fields saves this season's crop but leaves compacted soil for the next one. AHDB data show compaction can cut potato yields…
Autumn is a convenient time to put down potash for next year's potatoes. Applying potassium chloride months before planting lets chloride leach below the…
Zebra chip has no resistant commercial variety, so control depends on the psyllid that carries it. Extension data show how temperature, feeding time and…
Two Midwest extension services publish almost the same petiole sap nitrate targets for irrigated Russet Burbank. The ranges fall by about half at each…
Field and laboratory work in Sweden shows how fast Alternaria solani can escape SDHI fungicides. In Wisconsin, specialists start early blight sprays at 300…
A six-year Czech survey of 69 beetle populations found no population fully sensitive to a common pyrethroid. Extension advice is to rotate insecticide groups…
For growers now planting in the Southern hemisphere, the scab decision comes a few weeks after emergence. Irrigation research from the UK and North…
Cameroon has built a highland potato crop in the West and North-West regions. Output has grown strongly, but official guidance shows farm yields far…
A survey of 200 growers in the hill district shows seed as the largest cost item. Net return reached ₹159,654 per hectare, and larger…
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