Summer Potato Planting in Rostov Region: Expert Agronomist Shares Key Tips for a Bountiful Harvest

As the summer potato planting season reaches its peak in the Rostov Region, agronomist Vladimir Kosov from the Don Branch of the Federal Center for Agricultural Product Safety and Quality Assessment (TsOK APK) has issued comprehensive recommendations for gardeners cultivating in the southern climate. In this area, potatoes are traditionally planted twice a year—early varieties in May, and late-season varieties from mid-June to mid-July to ensure they mature by autumn. Kosov emphasizes that success hinges on two critical factors: using high-quality, healthy seed tubers without damage, and ensuring abundant, regular irrigation. He advises opting for locally adapted, high-starch varieties, which store well through the next season. Proper soil preparation is equally vital: potatoes thrive in slightly acidic soil (pH 5.5–6.5), benefit from compost or humus (but not fresh manure, which causes scab), and require green manures like mustard or rapeseed to enrich the soil and suppress pathogens. Unlike spring planting, large tubers should never be cut for summer planting, and pre-sprouting in the shade for a month is strongly recommended.

Irrigation, loosening, and regular fertilization are absolutely critical during the hot, dry summer months. Drip irrigation applied directly to the roots is the preferred method, as overhead watering can promote fungal diseases. The crop has a weak root system and needs oxygen, so after rain, shallow loosening to a depth of 2–3 cm is essential to break surface crusts and control weeds. Potatoes respond well to nitrogen, phosphorus, potassium, and boron—the latter promoting the formation of up to 23–25 tubers per plant. Weekly feeding is recommended, but both fertilization and watering must stop a month and a week before harvest, respectively. Harvesting takes place from late September to mid-October, and the expert advises leaving the tops intact to maximize starch accumulation through photosynthesis. After digging, tubers must be dried in storage areas protected from potato moths. Kosov also addresses common issues: black internal markings are often iron spotting (not blight) caused by heat stress, while pests like the Colorado potato beetle and stem nematode require integrated control measures. He notes that late-season potatoes are tastier and starchier than early ones, perfect for soups and borscht, but stresses that summer planting demands careful attention to every agronomic detail—from crop rotation to post-harvest storage disinfection.