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Ghidul buruienilor
Buruieni dicotiledonate
Abutilon theophrasti
Amaranthus retroflexus
Ambrosia trifida
Anagallis arvensis
Anthemis arvensis
Atriplex patula
Capsella bursa-pastoris
Cardaria draba
Chenopodium album
Cirsium arvense
Convolvulus arvensis
Datura stramonium
Fumaria officinalis
Galeopsis tetrahit
Galinsoga parviflora
Galium aparine
Hibiscus trionum
Lamium amplexicaule
Lamium purpureum
Matricaria chamomilla
Mercurialis annua
Myagrum perfoliatum
Polygonum aviculare
Polygonum convolvulus
Polygonum lapathifolium
Polygonum persicaria
Portulaca oleracea
Ranunculus arvensis
Raphanus raphanistrum
Senecio vulgaris
Sinapis arvensis
Solanum nigrum
Sonchus arvensis
Sonchus asper
Sonchus oleraceus
Spergula arvensis
Stellaria media
Thlaspi arvense
Tribulus terrestris
Tussilago farfara
Urtica urens
Veronica hederifolia
Veronica persica
Viola arvensis
Xantium strumarium
Buruieni monocotiledonate
Glosar de termeni
Buruienile in cultura
orezului
Ghidul daunatorilor
Ghidul bolilor la cereale
Ghidul bolilor la rapita
Crop Compendium
Calculator de dilutii
Echipamentul de protectie
Link-uri Bayer
Portulaca oleracea
 
 inapoi
Denumire stiintifica:Portulaca oleracea
Denumire populara:Iarba grasa

Buruiana seminifera anuala, adeseori culcata pe sol, dar si cu posibilitatea de a emite tulpini verticale, cu radacina pivotanta. Prefera soluri usoare, bogate in substante nutritive, soluri nisipoase in zone calde.

Epoca de germinare
Vara

Cotiledoane
Lungi, ovale, carnoase, in sectiune transversala semicilindrice, alungit oblongi, sesile, de culoare verde brun, violete la baza.

Frunzele adevarate
Groase, alterne, verde inchis, sesile, ovale pana la alungit-cuneiforme, lucioase, carnoase.

Tulpina
Cilindrica, carnoasa, dar dura (tare), adesea rosiatica si puternic ramificata, adesea culcata, cu o inaltime de 10-30 cm.

Floarea
Putin evidenta, cu periantul galben, nepedunculata, solitara sau in grupuri mici, plasata in axila foliara.

Perioada de inflorire
In plina vara toamna

Numarul de seminte pe planta
10000

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