نتایج جستجو برای: digitaria sanguinalis
تعداد نتایج: 497 فیلتر نتایج به سال:
The uptake of mercury vapor by six gramineous plant species was compared under uniform conditions using a whole-plant chamber and (203)Hg-labeled mercury at a low atmospheric concentration. Mean Hg uptake by leaves of the C(3) species oats (Avena sativa), barley (Hordeum vulgare), and wheat (Triticum aestivum) was 5 times greater than that by leaves of the C(4) species corn (Zea mays), sorghum ...
A series of new N,N'-diacylhydrazine derivatives were designed and synthesized. Their structures were verified by 1H-NMR, MS and elemental analysis. The herbicidal activities and plant growth regulating activity of these N,N'-diacylhydrazines were evaluated. The herbicidal activity results showed that most of these N,N'-diacyl-hydrazines showed excellent in vivo activities against Echinochloa c...
The potential impact of herbicide utilization compel people to use new method of weed control. Selective herbicide application is optimal method to reduce herbicide usage while maintain weed control. The key of selective herbicide is how to discriminate weed exactly. The HIS color co-occurrence method (CCM) texture analysis techniques was used to extract four texture parameters: Angular second ...
در مطالعه حاضر، آرایه های جنس digitaria در ایران بررسی شد. بر اساس نتایج به دست آمده، d. ciliaris، d. ischaemum، d. nodosa، d. sabulosa، d. sanguinalis به همراه d. violascens که نخستین گزارش از این گونه از ایران است، رویش آنها در ایران تأیید گردید. در مورد d. stricta که پیش از این از ایران گزارش شده است، بررسی نمونه مربوط نشان داد که این نمونه به d. violascens تعلق دارد بنابراین، حضور این گونه ...
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