{"title":"Interrelationship between potassium rates and the efficiency of Bt genes in the control of Spodoptera frugiperda","authors":"Marcelo Macedo Faria, Pedro Henrique Nascimento Cintra, Víctor Alves Amorim, Thiago Souza Campos, Ednaldo Cândido Rocha, Fabricio Rodrigues","doi":"10.1590/s1678-3921.pab2023.v58.03241","DOIUrl":null,"url":null,"abstract":"Abstract The objective of this work was to identify the effect of potassium rates on Bt transgenic resistance and damage caused by Spodoptera frugiperda in corn plants at different developmental stages. The experimental design was a randomized complete block in a 3x6 factorial arrangement, with three potassium rates (0, 45, and 90 kg ha-1) and six corn hybrids (20A55Hx, 30A77PW, AG1051, MG652PW, NS90VTPro2, and NS92VTPro), with three replicates. The hybrids were evaluated through the analysis of canonical variables. With low potassium rates, the effectiveness of the corn hybrids in controlling the S. frugiperda caterpillar decreases in the different phenological stages. The use of the Bt technology is more efficient under an adequate potassium rate of 90 kg ha-1 KCl.","PeriodicalId":19826,"journal":{"name":"Pesquisa Agropecuaria Brasileira","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pesquisa Agropecuaria Brasileira","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1590/s1678-3921.pab2023.v58.03241","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"AGRICULTURE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
Abstract
Abstract The objective of this work was to identify the effect of potassium rates on Bt transgenic resistance and damage caused by Spodoptera frugiperda in corn plants at different developmental stages. The experimental design was a randomized complete block in a 3x6 factorial arrangement, with three potassium rates (0, 45, and 90 kg ha-1) and six corn hybrids (20A55Hx, 30A77PW, AG1051, MG652PW, NS90VTPro2, and NS92VTPro), with three replicates. The hybrids were evaluated through the analysis of canonical variables. With low potassium rates, the effectiveness of the corn hybrids in controlling the S. frugiperda caterpillar decreases in the different phenological stages. The use of the Bt technology is more efficient under an adequate potassium rate of 90 kg ha-1 KCl.
摘要本研究旨在研究施钾量对不同发育阶段玉米对Bt转基因玉米的抗性及穗状夜蛾危害的影响。试验设计采用3 × 6因子随机完全区组设计，采用3个钾浓度(0、45和90 kg ha-1)和6个玉米杂交品种(20A55Hx、30A77PW、AG1051、MG652PW、NS90VTPro2和NS92VTPro)， 3个重复。通过典型变量分析对杂种进行评价。施钾量较低时，玉米杂交种防治金翅虫的效果在不同物候阶段均呈下降趋势。在90 kg ha-1 KCl的适钾量下，Bt技术的使用效率更高。
期刊介绍：
Pesquisa Agropecuária Brasileira – PAB – is issued monthly by Empresa Brasileira de Pesquisa Agropecuária – EMBRAPA, affiliated to Ministry of Agriculture, Livestock and Food Supply. PAB publishes original scientific-technological articles on Plant Physiology, Plant Pathology, Crop Science, Genetics, Soil Science, Food Technology and Animal Science.
Its abbreviated title is Pesq. agropec. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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