Plantaj, shudgori plantajii khok (fransavi plantage, lotini plan- to—meshinosam), shudgori chuquri zamini parvardakhona va niholkhonai tok, darakhtu butta ba vositai plughoi makhsus. Haigomi Plantaj qabati khokro chuqur (40—75 santimetr( va ziyoda az in) narm mekunand va in baroi inkishofi reshai rastani sharoiti musoid faro meovarad.
Baroi on ki qabati kamhosili khok ba ru nabaroyad, ba plughoi plantaji qismhoi korii ilovagii khokro chuqurnarmkunandai peshplug, korpusi dutarafa, otval, chuqurgaraki khok va gayraro payvast mekunand. Sifati khubi Plantaj baroi chuqur shudgor kardani 2—3 qabati khok imkoniyat medihad. Hangomi Plantakh odatan miqdori ziyodi nurihoi organiki va minerali, ohak (dar turshkhok) yo gach (dar zamini shurkhok) me- andozand.