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首页> 外文期刊>Weed Technology: A journal of the Weed Science Society of America >Harvest weed seed control of Italian ryegrass [Lolium perenne L. ssp. multiflorum (Lam.) Husnot], common ragweed (Ambrosia artemisiifolia L.), and Palmer amaranth (Amaranthus palmeri S. Watson)
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Harvest weed seed control of Italian ryegrass [Lolium perenne L. ssp. multiflorum (Lam.) Husnot], common ragweed (Ambrosia artemisiifolia L.), and Palmer amaranth (Amaranthus palmeri S. Watson)

机译：收获意大利黑麦草的杂草种子控制[Lolium Perenne L. SSP。 Multiflorum（Lam。）Husnot]，常见的豚草（Ambrosia Artemisiifolia L.），帕尔默苋菜（Amaranthus Palmeri S. Watson）

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摘要

Herbicide resistance is a major problem in United States and global agriculture, driving farmers to consider other methods of weed control. One of these methods is harvest weed seed control (HWSC), which has been demonstrated to be effective in Australia. HWSC studies were conducted across Virginia in 2017 and 2018, targeting Italian ryegrass in continuous winter wheat as well as common ragweed and Palmer amaranth in continuous soybean. These studies assessed the impact of HWSC (via weed seed removal) on weed populations in the next year's crop compared with conventional harvest (weed seeds returned). HWSC reduced Italian ryegrass tillers compared with the conventional harvest at two locations in April (29% and 69%), but no difference was observed at a third location. At wheat harvest, HWSC at one location reduced Italian ryegrass seed heads (41 seed heads m(-2)) compared with conventional harvest (125 seed heads m(-2)). In soybean, before preplant herbicide applications and POST herbicide applications, HWSC reduced common ragweed densities by 22% and 26%, respectively, compared with the conventional harvest plots. By soybean harvest, no differences in common ragweed density, seed retention, or crop yield were observed, because of effectiveness of POST herbicides. No treatment differences were observed at any evaluation timing for Palmer amaranth, which is attributed to farmer weed management (i.e., effective herbicides) and low weed densities making any potential treatment differences difficult to detect. Across wheat and soybean, there were no differences observed in crop yield between treatments. Overall, HWSC was demonstrated to be a viable method to reduce Italian ryegrass and common ragweed populations.
机译：除草剂抵抗是美国和全球农业的主要问题，驾驶农民考虑其他杂草控制的方法。其中一种方法是收获杂草种子控制（HWSC），这些控制（HWSC）已被证明在澳大利亚有效。 2017年和2018年弗吉尼亚州在弗吉尼亚州进行了香港武士诗歌研究，瞄准意大利黑麦草在连续冬小麦以及连续大豆中的常见牛草和帕尔默苋菜。这些研究评估了与传统收获（返回的杂草种子）相比，在明年作物中对杂草种群进行了评估了HWSC（通过杂草种子去除）。 HWSC减少了意大利黑麦分蘖，与4月份的两个地区的传统收获相比（29％和69％），但在第三位没有观察到差异。在小麦收获时，与传统收获相比，一个位置的HWSC减少了意大利黑麦草种头（41种子头M（-2））（125种籽头M（-2））。在大豆中，在预染色除草剂应用和除草剂应用后，与传统收获图相比，HWSC分别将常见的豚草密度减少22％和26％。通过大豆收获，由于除草剂后的有效性，观察到常见的豚草密度，种子保留或作物产量的差异。在Palmer Amaranth的任何评估时期没有观察到治疗差异，这归因于农民杂草管理（即有效除草剂）和低杂草密度，使得任何潜在的治疗差异难以检测。横跨小麦和大豆，治疗之间的作物产量没有观察到的差异。总体而言，HWSC被证明是减少意大利黑麦草和普通豚草种群的可行方法。

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