Numbers of weed seedbank in maize field crop

Abstract

A large seed production and the efficient propagation ensure the survival of weeds. After spreading most of the seed reaches the soil, and therefore weed seedbank are the main source of weed. The paper reviews the presence of weed seedbank at different soil layers (0 - 10 cm, 10 - 20 cm and 20 - 30 cm). Considering the total numbers of seeds (fruits) per m2 in the soil layer 0-10 cm, on location Dragočaj, dominant are: Digitaria sanguinalis L. (9688 seeds/m2), Sorghum halepense (L.) Pers. (7344), Chenopodium album L. (2031); in the location Hrvaćani: Digitaria sanguinalis L. (14219), Setaria glauca P.B. (7188) and Trifolium repens L. (4688). In the soil layer 10-20 cm, in Dragočaj, the following weed species are dominant: Digitaria sanguinalis L. (4844 seeds/m2), Sorghum halepense (L.) Pers. (1094) and Chenopodium polyspermum L. (938); in the location Hrvaćani: Setaria glauca P.B. (5938 seeds/m2), Myosotis arvensis (L.) Hill. (2031) and Polygonum persicaria L. (1875). In the soil layer 20-30 cm, the following weed species are dominant in the location Dragočaj: Digitaria sanguinalis L. (625 seeds/m2), Geranium dissectum Jusl (469) and Oxalis stricta L. (469); in the location Hrvaćani dominant are: Setaria glauca P.B. (2188 seeds/m2), Chenopodium polyspermum L. (1406) and Ambrosia artemisiifolia L. (1250). The paper reviews biologic and phytogeographical characteristic of the identified weed species.

Keywords

• seeds (fruit)
• weeds
• soil depth