Integrated Management of Soybean Insects

Boethel, D. J.

doi:10.2134/agronmonogr16.3ed.c17

Cited by 9 publications

(7 citation statements)

References 97 publications

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“…During this period several abiotic and biotic stresses, such as hail, foliage feeders and leaf diseases, are frequent problems in soybean production areas 7 . Among the most recognized biotic injury to soybean is defoliation caused by insects, mainly lepidopteran larvae, 8 and fungi such as brown spot caused by Septoria glycines Hemmi, cercospora leaf blight and soybean rust caused by Cercospora spp. and Phakopsora pachyrhizi (Syd.…”

Section: Introductionmentioning

confidence: 99%

Partial and total defoliation during the filling period affected grain industrial and nutraceutical quality in soybean

Carrera

Rosas²,

Mandarino

et al. 2022

J Sci Food Agric

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BACKGROUND Little is known about soybean grain chemical composition response to defoliation. The objectives of our study were: (i) to quantify the impact of different levels and timing of defoliation during the filling period on soybean grain yield and grain chemical content and composition, including protein, oil, fatty acids, and isoflavones; and (ii) to establish associations between them and the level and timing of defoliation. RESULTS Yield and grain chemical components were reduced by defoliation treatments, these effects being more pronounced as defoliation increased. Mild defoliation (33%) caused small or non‐significant changes in yield, its components, protein, oil, and isoflavone contents and concentrations. However, it affected oil composition, increasing the degree of unsaturation, which became more accentuated as defoliation increased. Moderate defoliation (66%) produced similar relative reductions in protein and oil contents, with small effects in isoflavone content, resulting in a generally greater isoflavone concentration in defatted flour and a greater isoflavone/protein ratio in grain. Total defoliation (100%) produced greater relative reductions in oil and isoflavone contents than in protein content. These resulted in higher protein/oil ratio and protein concentration and lower isoflavone/protein ratio and isoflavone concentration. Analyzed variables were associated with cumulative solar radiation during grain filling; indeed, this parameter successfully captured the effects of defoliation intensity and timing. CONCLUSION By exploring different levels and timings of defoliation during the filling period, our study provides novel and important information regarding the impact of light interception decreases on grain chemical components, with special emphasis on nutraceuticals. © 2022 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Partial and total defoliation during the filling period affected grain industrial and nutraceutical quality in soybean

Carrera

Rosas²,

Mandarino

et al. 2022

J Sci Food Agric

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“…Worldwide, 11 % of the crop is lost to animal pests, including insects (Oerke 2005 ). In the USA, the insect pests causing the most impact are: corn earworm [ Helicoverpa zea (Boddie)], soybean looper [ Chrysodeixis includens (Walker)], velvetbean caterpillar [ Anticarsia gemmatalis (Hübner)], bean leaf beetle, [ Cerotoma trifurcata (Forster)], green stink bug [ Chinavia hilaris (Say)], and southern stink bug [ Nezara viridula (L)] (Boethel 2004 ). The corn earworm (CEW), soybean looper (SBL), velvetbean caterpillar (VBC), and bean leaf beetle are chewing insects capable of defoliating plants entirely.…”

Section: Introductionmentioning

confidence: 99%

Pyramids of QTLs enhance host–plant resistance and Bt-mediated resistance to leaf-chewing insects in soybean

et al. 2016

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Key messageQTL-M and QTL-E enhance soybean resistance to insects. Pyramiding these QTLs withcry1Ac increases protection against Bt-tolerant pests, presenting an opportunity to effectively deploy Bt with host–plant resistance genes.AbstractPlant resistance to leaf-chewing insects minimizes the need for insecticide applications, reducing crop production costs and pesticide concerns. In soybean [Glycine max (L.) Merr.], resistance to a broad range of leaf-chewing insects is found in PI 229358 and PI 227687. PI 229358’s resistance is conferred by three quantitative trait loci (QTLs): M, G, and H. PI 227687’s resistance is conferred by QTL-E. The letters indicate the soybean Linkage groups (LGs) on which the QTLs are located. This study aimed to determine if pyramiding PI 229358 and PI 227687 QTLs would enhance soybean resistance to leaf-chewing insects, and if pyramiding these QTLs with Bt (cry1Ac) enhances resistance against Bt-tolerant pests. The near-isogenic lines (NILs): BenningME, BenningMGHE, and BenningME+cry1Ac were developed. BenningME and BenningMGHE were evaluated in detached-leaf and greenhouse assays with soybean looper [SBL, Chrysodeixis includens (Walker)], corn earworm [CEW, Helicoverpa zea (Boddie)], fall armyworm [FAW, Spodoptera frugiperda (J.E. Smith)], and velvetbean caterpillar [VBC, Anticarsia gemmatalis (Hübner)]; and in field-cage assays with SBL. BenningME+cry1Ac was tested in detached-leaf assays against SBL, VBC, and Southern armyworm [SAW, Spodoptera eridania (Cramer)]. In the detached-leaf assay, BenningME showed the strongest antibiosis against CEW, FAW, and VBC. In field-cage conditions, BenningME and BenningMGHE suffered 61 % less defoliation than Benning. BenningME+cry1Ac was more resistant than BenningME and Benningcry1Ac against SBL and SAW. Agriculturally relevant levels of resistance in soybean can be achieved with just two loci, QTL-M and QTL-E. ME+cry1Ac could present an opportunity to protect the durability of Bt genes in elite soybean cultivars. These results should assist the development of effective pest management strategies, and sustainable deployment of Bt genes in soybean.

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“…7 Worldwide, 11% of the crop is lost to animal pests, including insects, 8 of which leaf-chewing insects are economically important in the southern United States. 9 Although soybeans can withstand moderate leaf damage, high levels of defoliation greatly reduce seed yield and quality. 10 Therefore, plant resistance to leaf-chewing insects is essential for preventive pest management; it promotes efficient use of insecticides, diminishing crop production, and environmental concerns.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Soybean seeds are a major protein source for animal feed . Worldwide, 11% of the crop is lost to animal pests, including insects, of which leaf-chewing insects are economically important in the southern United States . Although soybeans can withstand moderate leaf damage, high levels of defoliation greatly reduce seed yield and quality .…”

Section: Introductionmentioning

confidence: 99%

Suitability of Soybean Meal from Insect-Resistant Soybeans for Broiler Chickens

Ortega

Davis

Boerma

et al. 2016

J. Agric. Food Chem.

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Benning(M) and Benning(MGH) are near-isogenic lines (NILs) of the soybean cultivar Benning, which contain insect-resistance quantitative trait loci (QTLs) from the soybean accession PI 229358. Benning(M) contains QTL-M, which confers antibiosis and antixenosis. In addition to QTL-M, Benning(MGH) contains QTL-G, which confers antibiosis, and QTL-H, which confers antixenosis. Soybean meal was produced from Benning and the NILs. Nutritional composition, digestible amino acid content, and nitrogen-corrected true metabolizable energy (TMEN) were equivalent among soybean meals. A 21-day broiler feeding trial was carried out to determine if the QTLs affect soybean meal quality. Weight gain and feed-to-gain ratio were evaluated. No biologically significant differences were detected for broilers fed Benning, Benning(M), and Benning(MGH). This demonstrates that soybean meal produced from the insect-resistant NILs is equivalent to soybean meal produced from their non-insect-resistant parent cultivar for broiler weight gain.

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Integrated Management of Soybean Insects

Cited by 9 publications

References 97 publications

Partial and total defoliation during the filling period affected grain industrial and nutraceutical quality in soybean

Partial and total defoliation during the filling period affected grain industrial and nutraceutical quality in soybean

Pyramids of QTLs enhance host–plant resistance and Bt-mediated resistance to leaf-chewing insects in soybean

Suitability of Soybean Meal from Insect-Resistant Soybeans for Broiler Chickens

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