Re-evaluation of leaf-lamina consumer thresholds for IPM decisions in short-season soybeans using artificial defoliation

Batistela, M. J.; Bueno, Adeney de Freitas; Nishikawa, Marcelo Akira Naime; Bueno, Regiane Cristina Oliveira de Freitas; Hidalgo, Gustavo; Silva, Leandro; Corbo, Edson; Silva, Ruben Brito

doi:10.1016/j.cropro.2011.10.014

Cited by 21 publications

(24 citation statements)

References 21 publications

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“…In an attempt to mitigate these problems, recent results have demonstrated that ETs currently recommended are appropriate for stink bugs and defoliators, regardless of soybean cultivar growth type, and should be abided by and used by growers to restore balance in the agroecosystem (Batistela et al, 2012, Bueno et al, 2015. It is true that the established ETs for soybean pests are for a limited number of species (key pests), and they only address the use of chemicals.…”

Section: Euschistus Heros Adultmentioning

confidence: 99%

Brazilian Soybean Pest Management and Threats to its Sustainability

Godoy¹,

Bueno²,

Gazziero³

2015

Outlook Pest Man

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Diaporthe phaseolorum var. meridionalis, detected in 1888/89, and bacterial pustule caused by Xanthomonas axonopodis pv. glycines have also been controlled by the introgression of resistance genes into cultivars (Almeida et al., 2005). A disease that represents a breakthrough in the history of soybean in Brazil is soybean rust, caused by the fungus Phakopsora pachyrhizi, identified in Brazil in 2001. Soybean rust is the most aggressive disease of the crop and can cause yield losses of up to 80%. Its introduction had a large impact on soybean production and management practices. After its first detection, the fungus quickly spread to important soybean producing regions (Yorinori et al., 2005). Conditions in much of the country are conducive to year-round survival of the pathogen and disease outbreaks are frequent in years and regions with favourable rainfall distribution. Because of soybean rust, from 2006 the Brazilian states adopted a period of 60 to 90 days from July to September called the soybean-free period, during which the cultivation of soybean is restricted except under strictly controlled conditions. This measure was adopted to break the continuous cycle of the fungus and delay the beginning of the epidemic in the regular season. Early-planting with early-maturity cultivar has also been adopted to avoid the period with high amount of inoculum and weather conditions favorable for disease epidemics.

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Section: Euschistus Heros Adultmentioning

confidence: 99%

Brazilian Soybean Pest Management and Threats to its Sustainability

Godoy¹,

Bueno²,

Gazziero³

2015

Outlook Pest Man

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“…In the USA, which is the largest soybean producer, the ET is 35% defoliation at the vegetative stage and 20% at the reproductive stage (Andrews et al 2009). In Brazil, the second largest soybean producer, pest-control measures are triggered either when 20 large (≥1.5 cm) lepidopteran larvae are counted per beat cloth (1-metersoybean line) or when 30% defoliation (in the vegetative stage) or 15% defoliation (in the reproductive state) is recorded (Fig 2) (Bueno et al 2011a, Batistela et al 2012.…”

Section: Present Ets For Soybean-ipmmentioning

confidence: 99%

“…However, soybean cultivars and their production systems have undergone dramatic changes in recent years. In this context, the current cultivars have improved yields and different growth habits (determinate and indeterminate), and they usually have shorter maturity periods, among other traits (Batistela et al 2012).…”

Section: Changes In Soybean Scenarios and Related Doubts About Et Accmentioning

confidence: 99%

“…Even though many of these studies were carried out in the 1970s or 1980s, several more recently published papers have shown these levels are still reliable , Reichert & Costa 2003, Batistela et al 2012. Among the recent studies, Batistela et al (2012) showed that even the newer soybean cultivars, regardless of their growth habit (determinate or indeterminate), can tolerate defoliation levels supported by the ET without a significant reduction in yield (Fig 3).…”

Section: Changes In Soybean Scenarios and Related Doubts About Et Accmentioning

confidence: 99%

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Economic Thresholds in Soybean-Integrated Pest Management: Old Concepts, Current Adoption, and Adequacy

et al. 2013

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Increasing global demands for food underline the need for higher crop yields. The relatively low costs of the most commonly used insecticides in combination with increasing soybean market prices led growers and technical advisors to debate the adequacy of recommended economic thresholds (ETs). The adoption of ETs and pest sampling has diminished in Brazil, leading to excessive pesticide use on soybean. The reduced efficacy of natural biological control, faster pest resurgence, and environment contamination are among the side-effects of pesticide abuse. To address these problems and maximize agricultural production, pest control programs must be guided by a proper integrated pest management (IPM) approach, including the ET concept. Therefore, the most appropriate time to initiate insecticide spraying in soybean is indicated by the available ETs which are supported by experiments over the last 40 years in different edapho-climatic conditions and regions with distinct soybean cultivars. Published scientific data indicate that preventive insecticide use is an expensive and harmful use of chemicals that increases the negative impact of pesticides in agroecosystems. However, the established ETs are for a limited number of species (key pests), and they only address the use of chemicals. There is a lack of information regarding secondary pests and other control strategies in addition to insecticides. It is clear then that much progress is still needed to improve ETs for pest management decisions. Nevertheless, using the current ETs provides a basis for reducing the use of chemicals in agriculture without reducing yields and overall production, thereby improving sustainability.

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“…The primary defoliating caterpillar species is the velvetbean caterpillar, Anticarsia gemmatalis (Hiibner, 1818) (Lepidoptera: Eribidae) (Batistela et al 2012). However, in the main soybean producing areas, other species of caterpillars may also cause significant damage to the soybean crop.…”

mentioning

confidence: 99%

Biological Parameters ofPodisus nigrispinus(Hemiptera: Pentatomidae) Fed with Different Soybean Insect Pests

Denez

Bueno

Pasini

et al. 2014

Annals of the Entomological Society of America

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Biological parameters of Podisus nigrispinus (Dallas) fed with third-instar Lepidoptera larvae of Spodoptera frugiperda J.E. Smith, Spodoptera cosmioides (Walker, 1858), and Anticarsia gemnmtalis (Hiibner, 1818), as well as eggs of Euschistus heros (F" 1798), the brown stink bug, were evaluated. Experiments were performed under controlled conditions (25 ± 1°C; 70 ± 10% relative humidity, and a photoperiod of 16:8 [L:D] h ). P. nigrispinus had good nymphal development with >87% larval survival (viability), as well as high fecundity in adults, when fed with A. gemmatalis, S. frugiperda, and S. cosmioides larvae. Differently, adults of P. nigrispinus originating from nymphs fed with eggs of E. heros completed their life cycle; however, larval survival (viability) was reduced to 45.7%. Furthermore, these adults did not oviposit, and their body mass was from 50 to 73% lower than in individuals originating from nymphs fed with other tested prey. Taking into consideration that neither E. heros nor Spodoptera spp. are controlled by Bt soybean varieties expressing the Cry lAc protein, it can be assumed that the predator P. nigrispinus will still find prey species to feed in soybean fields even after the adoption of this pest control technology. This might help lower any potential negative impact of Bt soybean adoption above this insect predator. Moreover, the studied caterpillars proved to be potential prey for the predator's mass rearing, similarly to what is presently being done with coleopteran larvae.

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Re-evaluation of leaf-lamina consumer thresholds for IPM decisions in short-season soybeans using artificial defoliation

Cited by 21 publications

References 21 publications

Brazilian Soybean Pest Management and Threats to its Sustainability

Brazilian Soybean Pest Management and Threats to its Sustainability

Economic Thresholds in Soybean-Integrated Pest Management: Old Concepts, Current Adoption, and Adequacy

Biological Parameters ofPodisus nigrispinus(Hemiptera: Pentatomidae) Fed with Different Soybean Insect Pests

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