field studies were concurred in Basrah region to investigate the effect of different durations ( 0 – 6 wk ) of solarization alone on scarified dodder seeds and solarization with out chicken manure on non scarified seeds at various soil depth ( 0 – 20 cm ) for both scarified and non scarified dodder seeds the effect of solarization periods on percent total seeds germination ( PTSG ) was consistent only at 0 depth at this depth of the solarization effect on scarified dodder seeds occurred during the first 10 d . where the reduction in PTSG was 95% non scarified dodder seeds required 6 wk of solarization alone for significant reduction ( 69% ) in PTSG at 0 depth . chicken manure reduced the period of solarization from 6 to 2 wk for significant PTSG reduction
15 – Rabin . B . Berjamin , A , 1984 , solarization of the soil involvement of environmental factors in the weed control process , weed sci . 32 , 138 – 142 .
16 – Simpson , K , 1986 . fertilizers and manures longrian group limited . New Yourk .
17 – Taylorson , R , B , Hendricks , S,B, 1977 Dormancy in seeds , Ann . Rev. plant physiol .28.331 – |