Economic Analysis of Pesticide Expenditure for Managing The Invasive Fall Armyworm, &lt;i&gt;Spodoptera frugiperda&lt;/i&gt; (J. E. Smith) by Maize Farmers in Karnataka, India

Deshmukh, Sharanabasappa S.; Kalleshwaraswamy, C. M.; Prasanna, B. M.; Sannathimmappa, H. G.; A., Kavyashree B.; Sharath, K. N.; Pradeep, Palam; Patil, Kiran Kumar R.

doi:10.18520/cs/v121/i11/1487-1492

Cited by 20 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Maize is a second most important cereal in India followed by rice. Following recent invasion of S. frugiperda into India, the economics of expenditure has already increased for maize cultivation (Sharanabasappa et al, 2021). Any addition to the pest complex due to outbreak of this kind reported here has drastic impact on maize cultivation in India.…”

Section: Redescription Adultmentioning

confidence: 77%

Outbreak of Army Worm, <i>Leucania albistigma</i> Moore on Maize with Notes on Taxonomy and Management

Kalleshwaraswamy,

Karthik,

Meghana

et al. 2023

IJE

Self Cite

View full text Add to dashboard Cite

Army worms and cut worms are pests of crops and assume serious pest status occasionally causing significant damage to agricultural crops. Present study report the incidence and taxonomic identity of the pest which occurred in outbreak form causing severe defoliation on maize over 1000 ha in Shivamogga district of Karnataka. Infestation was also noticed on the adjoining fields of sorghum and rice at negligible level. Through morphological characters including genitalia and DNA barcoding, the taxonomic identity of Leucania albistigma Moore (Lepidoptera: Noctuidae) as army worm in outbreak form is reported herewith for the first time from India. As its taxonomic information was scanty, redescription of all the stages has been provided. DNA barcoding and phylogenetic analysis revealed that species of the genera Leucania have a close relationship with those of Mythimna. Spatial distribution indices analysed indicated the uniform distribution in soil but aggregated distribution on maize. Select insecticides were evaluated in field targeting larvae with spray and with poison bait in randomised block design. Treatments with poison bait outperformed spray formulations, indicating that the larval behaviour could be exploited for management. Species of army worms are polyphagous and occur frequently in the Indian subcontinent, the taxonomic, ecological and management studies undertaken in the present study forms a basis for future monitoring of species identity and outbreaks on cereal crops.

show abstract

Section: Redescription Adultmentioning

confidence: 77%

Outbreak of Army Worm, <i>Leucania albistigma</i> Moore on Maize with Notes on Taxonomy and Management

Kalleshwaraswamy,

Karthik,

Meghana

et al. 2023

IJE

Self Cite

View full text Add to dashboard Cite

show abstract

“…Thereafter, it spread to different states of India [22]. In India, following its introduction, it has become a major pest [22,23] and displaced native stem borers due to its cannibalistic nature and early occupancy behavior [24,25]; insecticides are the main mode of management strategies, and hence, the economic expenditure of maize cultivation has drastically increased [26]. On the other hand, whorl application of soil mixed insecticides is effective and advantageous over foliar spray [27].…”

Section: Introductionmentioning

confidence: 99%

Silicon Accumulation in Leaves Reduces the Herbivory by Invasive Fall Armyworm Spodoptera frugiperda and Enhances the Yield of Maize

Nagaratna,

Kalleshwaraswamy,

Dhananjaya

et al. 2023

IJPB

Self Cite

View full text Add to dashboard Cite

Fall armyworm (FAW) Spodoptera frugiperda is currently being considered as a serious insect pest in maize that causes significant yield losses worldwide. Silicon (Si) and plant growth regulators (PGRs) are known to induce resistance against biotic and abiotic stresses thereby enhancing the yield. This study was conducted to determine the influence of Si and PGRs on the incidence and damage of FAW on maize (Zea mays L.) under field condition. The experiment was conducted in both Kharif and Rabi seasons using a randomized complete block design with three replications and treatments. Various combinations of foliar silicic acid (FSA) and two PGRs such as gibberelic acid (GA3) and jasmonic acid (JA) were tested to study their effects on FAW incidence and maize yield. The application of FSA at 2mL/plant + GA3 at 0.5 mg/plant recorded the lowest number of larvae per plant (0.39 larva/plant) with the lowest damage score of 2.55 (Davis scale). The percent infestation was also low for the same treatment, i.e., 34.14 percent infestation with the highest percent reduction over control (56.43%). The highest yield (58.39 q/ha) and cost–benefit ratio (1:2.34) was recorded for FSA at 2 mL/plant + GA3 at 0.5 mg/plant, which was considered as the best treatment. This study demonstrated that exogenous application of Si along with PGRs has significant negative effect on field incidence of FAW and enhanced the yield of maize.

show abstract

“…In India, the incidence of FAW has been reported in crops such as maize (Sharanabasappa et al, 2018a), sugarcane (Srikanth et al, 2018;Chormule et al, 2019), paddy (Ali et al, 2018), ginger (Shankar and Adachi, 2019), bajra, sorghum (Venkateswarlu et al, 2018), cotton, johnson grass, sunflower (Bharadwaj et al, 2020), banana (Ragesh and Balan, 2020), and fodder grass, grain amaranth (Maruthadurai and Ramesh, 2019). Farmers in maizegrowing regions have resorted to using two rounds of insecticides to manage FAW (Deshmukh et al, 2021a). Despite frequent reports in maize and sugarcane-growing regions of Maharashtra, FAW had not been found infesting onions.…”

Section: Introductionmentioning

confidence: 99%

Invasion of fall armyworm, (Spodoptera frugiperda, J E Smith) (Lepidoptera, Noctuidae) on onion in the maize–onion crop sequence from Maharashtra, India

Soumia,

Shirsat,

Chitra

et al. 2023

Front. Ecol. Evol.

View full text Add to dashboard Cite

IntroductionClimate change affects geographical distribution of insect pests which poses threats to the environment, as well as agricultural productivity and production worldwide. Spodoptera frugiperda is commonly known as fall armyworm (FAW), a potential insect pest of monocot crops like maize, wheat, rice and sorghum globally. Among these, maize is the most preferred host crop while worldwide there are very few reports on onion being a host of fall armyworm.MethodsThe fall armyworm (FAW) was identified by examining the morphological characteristics of its immature and mature stages, as well as by analyzing the mitochondrial cytochrome oxidase 1 (COX1) gene. Further, the strain identity was confirmed through multiple sequence alignment with previously identified S. frugiperda strains from corn and rice. Also studied the biology and damage symptoms caused by FAW in onion crops.ResultsDuring our experiments, the incidence of FAW ranged from 5 to 20 percent in different plots. The highest incidence was observed in young crops (30–45 days after transplanting) that were sown in November 2020. The FAW larvae exhibited six instars, with a total larval duration of 22.2 ± 0.37 days. The pest had multiple generations per year. The fully developed larvae formed earthen cocoons in the soil for pupation, with a pupal duration of 8.0 ± 0.45 days. The male adults had a recorded longevity of 6.4± 0.40days, while the female adults lived for approximately 9.2 ± 0.37 days. The COX1 gene sequencing revealed its 100% similarity with Spodoptera frugiperda and the comparison of sequences among FAW infecting rice and maize by using multiple sequence alignment showed differences at 11 positions.DiscussionThe present study is the first report of FAW invasion in onion in India and provides basic ideas about FAW characteristics which will help to control this new invasive pest in onion. In tropical regions with multiple cropping system and seasons, it becomes very important to investigate invasive pests as well as its host range in order to forecast its potential damage and devise suitable control measures.

show abstract

Economic Analysis of Pesticide Expenditure for Managing The Invasive Fall Armyworm, <i>Spodoptera frugiperda</i> (J. E. Smith) by Maize Farmers in Karnataka, India

Cited by 20 publications

References 0 publications

Outbreak of Army Worm, <i>Leucania albistigma</i> Moore on Maize with Notes on Taxonomy and Management

Outbreak of Army Worm, <i>Leucania albistigma</i> Moore on Maize with Notes on Taxonomy and Management

Silicon Accumulation in Leaves Reduces the Herbivory by Invasive Fall Armyworm Spodoptera frugiperda and Enhances the Yield of Maize

Invasion of fall armyworm, (Spodoptera frugiperda, J E Smith) (Lepidoptera, Noctuidae) on onion in the maize–onion crop sequence from Maharashtra, India

Contact Info

Product

Resources

About