M. Javaid, Akram Zia, H. Waheed, J. Nargis, A. Shahid, A. Aziz, A. Wasaya
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引用次数: 4
摘要
摘要:在各种杂草治理策略中,化学除草被认为是最有效的方法。然而,最佳剂量和除草剂与助剂的合适组合对于将杂草控制在可接受的水平并实现作物最大产量至关重要。采用田间试验研究了出苗后除草剂异丙醇单独或联用对冬小麦及其伴生杂草的防治效果。处理是异丙孕酮175 g a.i. ha-1、140 g a.i. ha-1和105 g a.i. ha-1单独或与佐剂Ad-500或生物增强剂各400 mL ha-1和杂草检查作为对照处理。异丙隆(175 g a.i. ha-1) +生物增强剂(400 mL ha-1)处理对黄花草(Melilotus indica, Anagallis arvensis, Phalaris minor)和黄花草(Fumaria indica)的光合活性和鲜干生物量均有降低,效果最好。以小麦为例,异丙醇用量为175 g a.i. ha-1 +生物增强剂用量为400 mL ha-1时,分蘖、株高、千粒重、生物产量和籽粒产量均达到最高。而未施用除草剂时,小麦的气体交换参数最高。综上所述,异丙醇175 g a.i. ha-1 +生物增强剂400 mL ha-1可以最大限度地抑制这些杂草,从而达到小麦的最佳产量。此外,佐剂减剂量的除草剂在控制杂草和提高产量方面效果不明显。
Effect of Isoproturon With and Without Adjuvants on Photosynthetic Attributes of Wheat and Its Associated Weeds
ABSTRACT: Among various weed management strategies, chemical weed control is considered the most effective method. However, optimum dose and suitable combination of herbicide with adjuvants play a vital role in controlling weeds at an acceptable level and produce maximum crop yield. A field study was conducted to investigate the effect of post-emergence herbicide isoproturon alone or with combination of adjuvants on winter wheat and its associated weeds. The treatments were isoproturon at 175 g a.i. ha-1, 140 g a.i. ha-1 and 105 g a.i. ha-1 applied alone or with adjuvants Ad-500 or Bio-enhancer at 400 mL ha-1 each and weedy check as a control treatment. Isoproturon at 175 g a.i. ha-1 + Bio-enhancer at 400 mL ha-1 was most effective treatment for control of Melilotus indica, Anagallis arvensis, Phalaris minor and Fumaria indica as it decreased the photosynthetic activity, fresh and dry biomass of these weeds. In case of wheat, highest productive tillers, plant height, 1000-grain weight, biological and grain yield were achieved with isoproturon at 175 g a.i. ha-1 + Bio-enhancer at 400 mL ha-1. However, highest values of gas exchange parameters of wheat were observed where no herbicide was sprayed. It can be concluded that isoproturon at 175 g a.i. ha-1 + Bio-enhancer at 400 mL ha-1 might be a profitable approach to achieve optimal yield of wheat by causing the maximum suppression of these tested weeds. Moreover, the herbicide at reduced dose with adjuvants was not much effective in terms of weed control or increased yield.
Planta DaninhaAgricultural and Biological Sciences-Plant Science
自引率
0.00%
发文量
0
审稿时长
16 weeks
期刊介绍:
Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.