木薯剪枝后单除草剂与叶面肥混用及不混用除草剂的顺序施用

IF 0.8 Q3 Agricultural and Biological Sciences

Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100004

N. V. Costa, A. C. Salvalaggio, S. D. Ferreira, J. A. Barbosa, A. M. Gibbert

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引用次数: 1

摘要

摘要:木薯在修剪后开始一个新的生长周期，杂草控制是必要的。因此，本研究旨在评价木薯剪枝后单独施用除草剂和叶面肥与不施用叶面肥混用除草剂的选择性和效率。试验采用随机区组设计，共4个重复。试验1为对照不除草处理;除草控制;mesotrione;mesotrione / mesotrione;中三酮+叶面肥/中三酮+叶面肥;中三酮/中三酮+叶面肥;美索三酮+克罗索丁;中三酮+龙脑+叶面肥/中三酮+龙脑+叶面肥;Mesotrione + clethodim/ Mesotrione + clethodim;中三酮+氯脲/氯脲;中三酮+氯脲/氯脲+叶面肥;中三酮+乳清+叶面肥/氯脲+乳清+叶面肥;中三酮+氯脲/氯脲+氯脲]。试验2为对照不除草处理;除草控制;chlorimuron;氯脲+叶面肥/氯脲+叶面肥;chlorimuron / chlorimuron;氯脲+氯噻酮;氯脲+聚硫脲+叶面肥/氯脲+聚硫脲+叶面肥;氯脲+氯脲/氯脲+氯脲;氯脲+杀虫灵/三氯酮+叶面肥;氯脲+氯噻酮/美索酮;氯脲+乳清+叶面肥/中三酮+乳清+叶面肥;氯脲+氯噻酮/中三酮+氯噻酮。两个实验中使用的剂量分别为240、120和20 g ha-1，而2.5 L的商业产品氨基加®作为叶面肥料。第一次施用于修剪后50天，第二次施用于第一次施用后22天。在实验1中，施施中三酮、中三酮/中三酮、中三酮+氯噻酮/中三酮+氯噻酮对木薯具有选择性，对杂草的防治效果良好。在试验2中，氯脲+杀虫灵/美索三酮、氯脲+杀虫灵+叶面肥/美索三酮+杀虫灵+叶面肥、氯脲+杀虫灵/美索三酮+杀虫灵对杂草的防治效果良好，但无选择性处理。喷施液中添加叶面肥对提高选择性没有贡献。

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Sequential Application of Herbicides Alone and in Mixture With and Without Foliar Fertilizer after Pruning of Cassava Plants

ABSTRACT: A new cycle of growth begins after pruning of cassava, and weed control is necessary. Thus, this study aimed to evaluate the selectivity and efficiency of sequential application of herbicides alone and in mixture with and without of foliar fertilizer after pruning of cassava. Two experiments were carried out in a randomized block design with four replications. The treatments of Experiment 1 consisted of control without weeding; control with weeding; mesotrione; mesotrione/mesotrione; mesotrione + foliar fertilizer/mesotrione + foliar fertilizer; mesotrione/mesotrione + foliar fertilizer; mesotrione + clethodim; mesotrione + clethodim + foliar fertilizer/mesotrione + clethodim + foliar fertilizer; mesotrione + clethodim/mesotrione + clethodim; mesotrione + clethodim/chlorimuron; mesotrione + clethodim/chlorimuron + foliar fertilizer; mesotrione + clethodim + foliar fertilizer/chlorimuron + clethodim + foliar fertilizer; mesotrione + clethodim/chlorimuron + clethodim]. Treatments of Experiment 2 consisted of control without weeding; control with weeding; chlorimuron; chlorimuron + foliar fertilizer/chlorimuron + foliar fertilizer; chlorimuron/chlorimuron; chlorimuron + clethodim; chlorimuron + clethodim + foliar fertilizer/chlorimuron + clethodim + foliar fertilizer; chlorimuron + clethodim/chlorimuron + clethodim; chlorimuron + clethodim/mesotrione + foliar fertilizer; chlorimuron + clethodim/mesotrione; chlorimuron + clethodim + foliar fertilizer/mesotrione + clethodim + foliar fertilizer; chlorimuron + clethodim/mesotrione + clethodim. The doses of mesotrione, clethodim, and chlorimuron used in both experiments were 240, 120, and 20 g ha-1, respectively, while 2.5 L of the commercial product Amino Plus® was used as foliar fertilizer. The first application was carried out at 50 days after pruning and the second application at 22 days after the first application. In Experiment 1, the application of mesotrione, mesotrione/mesotrione, and mesotrione + clethodim/mesotrione + clethodim showed selectivity to cassava and were efficient in weed control. In Experiment 2, chlorimuron + clethodim/mesotrione, chlorimuron + clethodim + foliar fertilizer/mesotrione + clethodim + foliar fertilizer, and chlorimuron + clethodim/mesotrione + clethodim were efficient in weed control, but no treatment was selective. The addition of foliar fertilizer to the spray solution did not contribute to increase selectivity.

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来源期刊

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

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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.