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Seed retention of ten common weed species at oat harvest reveals the potential for harvest weed seed control
Weed Research ( IF 1.7 ) Pub Date : 2020-06-25 , DOI: 10.1111/wre.12438
Zahra Bitarafan 1 , Christian Andreasen 1
Affiliation  

We assessed the seed production and shedding pattern of 10 common weed species in two oat fields in Denmark. The aim was to evaluate the possibility of harvesting retained seeds on weeds at crop harvest by a combine harvester based on estimation of weed seed retention. Before flowering, ten plants of each weed species were selected and surrounded by a seed trap comprising of a porous net. When the plants started shedding seeds, the seeds were collected from the traps and counted weekly until oat harvest. Just before oat harvest, the retained seeds on the plants were counted and the ratio of harvestable seeds and shed seeds during the growing season was determined. The seed production and shedding patterns varied between the 2 years. Across both years, Anagallis arvensis L., Capsella bursa‐pastoris L. Medik, Chenopodium album L., Geranium molle L., Persicaria maculosa Gray, Polygonum aviculare L., Silene noctiflora L., Sonchus arvensis L., Veronica persica Poir. and Viola arvensis Murray retained on average 61.6%, 52.7%, 67.2%, 58.4%, 32.05%, 59.5%, 95.7%, 23.5%, 51.7% and 33.9%, respectively, of their produced seeds at crop harvest. Silene noctiflora was classified as a good target for harvest weed seed control; C. bursa‐pastoris, Calbum, Gmolle, Pmaculosa, Sarvensis and Varvensis were classified as intermediate targets; and Aarvensis, Paviculare and Vpersica were classified as poor targets.

中文翻译:

燕麦收获时十种常见杂草物种的种子滞留揭示了收获杂草种子控制的潜力

我们评估了丹麦两个燕麦田中10种常见杂草物种的种子生产和脱落模式。目的是评估联合收割机根据杂草种子滞留量的估算,在作物收获时在杂草上收获保留种子的可能性。开花前,选择每种杂草种类的十株植物,并用包括多孔网的种子诱捕器包围。当植物开始脱落种子时,从陷阱中收集种子并每周计数直至收获燕麦。在燕麦收获前,对植物上保留的种子进行计数,并确定生长季节中可收获种子与脱落种子的比率。两年间种子的产量和脱落方式有所不同。在这两年中,Anagallis arvensis L.,Capsella bursa-pastorisL. Medik,藜属L.,天竺葵Molle L.,Persicaria maculosa灰色,何首乌L.,夜蛾Silene noctiflora L.,Sonchus arvensis L.,Veronica persica Poir。作物收获时,Murray和Viola arvensis Murray分别平均保留了其所生产种子的61.6%,52.7%,67.2%,58.4%,32.05%,59.5%,95.7%,23.5%,51.7%和33.9%。夜光粉被归类为收获杂草种子控制的良好目标。C.荠菜Ç。 专辑。 踯躅P。 maculosa小号。 V。 arvensis被分类为中间目标;和一个。 P。 V。 波斯被列为不良目标。
更新日期:2020-06-25
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