Dong Shuqi, Chen Tingting, Xi Ruize, Gao Shulin, Li Gaofeng, Zhou Xuena, Song Xie, Ma Yongqing, Hu Chunyan, Yuan Xiangyang
College of Agriculture, Shanxi Agricultural University, Jinzhong 030800, China.
College of Plant Protection, Shanxi Agricultural University, Jinzhong 030800, China.
Plants (Basel). 2024 Aug 18;13(16):2296. doi: 10.3390/plants13162296.
Grass damage has become an important factor restricting foxtail millet production; chemical weeding can help resolve this issue. However, special herbicides in foxtail millet fields are lacking. Penoxsulam has a broad weed control spectrum and a good control effect. In this project, Jingu 21 was used as the test material, and five different concentrations of penoxsulam were used for spraying test in the three-five leaf stage. In this experiment, the effects on the growth of foxtail millet were discussed by measuring the agronomic characters and antioxidant capacity of foxtail millet after spraying penoxsulam. The results showed that: (1) penoxsulam is particularly effective in controlling L. and (L.) Beauv. (, but is ineffective in controlling L. () and (L.) Scop. (); (2) the stem diameter, fresh weight, and dry weight of the above-ground parts decreased with the increase in spraying amount; (3) as the spraying dosage increased, the superoxide (SOD), peroxidase (POD), and catalase (CAT) activities in the foxtail millet initially increased and subsequently decreased; the malonaldehyde (MDA) content increased. Our experiment found that 1/2X and 1X spraying dosages had certain application value in controlling gramineous weeds in foxtail millet field. Other spraying dosages are not recommended as they may harm the crops. Our findings provide reference for identifying new herbicides in the foxtail millet field.
草害已成为制约谷子生产的重要因素；化学除草有助于解决这一问题。然而，谷子田缺乏专用除草剂。五氟磺草胺具有广谱的杂草防除谱和良好的防除效果。本项目以晋谷21为试验材料，在三叶至五叶期用5种不同浓度的五氟磺草胺进行喷施试验。本试验通过测定喷施五氟磺草胺后谷子的农艺性状和抗氧化能力，探讨其对谷子生长的影响。结果表明：（1）五氟磺草胺对马唐和止血马唐防效显著，但对狗尾草和金色狗尾草防效不佳；（2）地上部分的茎粗、鲜重和干重随喷施量的增加而降低；（3）随着喷施剂量的增加，谷子中超氧化物歧化酶（SOD）、过氧化物酶（POD）和过氧化氢酶（CAT）活性先升高后降低；丙二醛（MDA）含量增加。本试验发现1/2X和1X喷施剂量在谷子田防除禾本科杂草方面具有一定的应用价值。不建议使用其他喷施剂量，因为它们可能会损害作物。我们的研究结果为谷子田新型除草剂的筛选提供了参考。
