6

6 Review (s)

  1. V. Sretinsky Vyborg

    The leaves on the potato bushes wither still green. I dug up the tubers and saw that they were very small, and the main roots were densely overgrown with small thin lateral roots of white color. I bought seed tubers in the spring, planted them already with seedlings, and until mid-summer everything was fine. What's happened?

    Reply
    • OOO "Sad"

      Most likely, the potato is infected with the golden nematode. Perhaps she got with the seed material. The golden cyst nematode (globodera) is widespread in the Northwestern, Central, Central Black Earth and Volga regions. Its microscopic, translucent, worm-like larvae and very small, globular, golden-brown females feed on potato roots, causing disturbances in their development. The root system forms a small adventitious growth and acquires a "mossy" appearance. The above-ground part of the plants looks depressed from the middle of the growing season: fewer shoots, the lower leaves are wilted. The formation and growth of tubers is sharply reduced, up to a complete loss of the crop.

      The resting stages of nematodes are cysts, that is, the shells of the body of females filled with eggs. They remain viable in the soil for up to 8 years. To protect against the nematode, it is forbidden to use seed potatoes from farms where it is found. They recommend a long (up to the same 8 years) refusal to grow nightshade plants in areas where the pest is found.
      In addition, there are many varieties of potatoes with high resistance to the nematode, which can be grown even in places where it is distributed. These are, for example, the varieties Aurora, Agria, Bryansk delicacy, Dolphin, Desnitsa, Diamant, Zhukovsky early, Impala, Cardinal, Krinitsa, Crystal, Ladoga, Latona, Lukyanovs, Picasso, Pri-gozhy-2, Prior, Ryabinushka, Red Scarlet, Riviera, Site, Fresco, etc.

      On the other hand, the varieties Detskoselsky, Lasunok, Lugovskoy, Lorkh, Nevsky, Nikulinsky, Resource, Bullfinch, Sineglazka, Temp, Luck, Charodey, Yantar and others do not possess resistance to the nematode. V. GRITSENKO, Professor of the Department of Plant Protection, RGAU-MSHA named after K.A. Timiryazev

      Reply
  2. Andrey Starovoitov

    I noticed that many potatoes are covered with a crust, like warts. The variety changed just a year ago. Why is the harvest so ugly?

    Reply
    • OOO "Sad"

      — The potato disease described is called scab. This is not a very harmful disease caused by microscopic soil fungi. It is impossible to identify diseased tubers by leaves: scab does not harm them. But diseased tubers, indeed, have an unsightly appearance, are stored worse and transmit the infection when planted next year.
      To reduce the level of damage to tubers by scab, you need to regularly lime the soil. If possible, do not plant potatoes in this place for 3-5 years. Be sure to change the seed material. For planting, take only healthy tubers.
      Remedies can also be used to combat scab: Fitosporin, Trichodermin, Copper oxychloride (HOM), Skor, etc. Before planting, spray the tubers abundantly with one of these drugs, diluted according to the instructions.

      Reply
  3. Grigory Kunitsyn, Tver

    The lower leaves of the potato first became covered with dark golden spots, and then the edges of these leaves turned brown and twisted. What is this disease?

    Reply
    • OOO "Sad"

      This is not a disease, but a clear sign of a lack of the nutrient element potassium in the soil. This phenomenon is most often observed when growing potatoes on sandy, sandy loamy soils and peat bogs.
      Indeed, potassium starvation first appears on the leaves of the lower tier of stems in the form of bronze spots. After some time, the edges of the leaves turn brown and curl.
      To prevent this from happening, in the spring, before digging a plot for planting potatoes, 2 tbsp. spoons of mineral potash fertilizer or 2 cups of wood ash.

      Reply

Mini-forum of gardeners

Your email will not be visible