Assessment of On-Farm Yield Losses in Sorghum Due to Insect Pests

Reddy, K. V. Seshu

doi:10.1017/s1742758400005531

Cited by 11 publications

(9 citation statements)

References 6 publications

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“…Plant injury is caused by larval feeding in the plant whorl and later through stem tunnelling. Grain yield losses ranging from 24-36% in maize (Chatterji el al., 1969) and 2-88% in sorghum (Seshu Reddy, 1988) have been reported.…”

Section: Introductionmentioning

confidence: 95%

Distribution and sampling of Chilo partellus (Lepidoptera: Pyralidae) in maize and sorghum on the Kenya coast

Overholt

Ogedah

Lammers

1994

Bull. Entomol. Res.

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The seasonal occurrence and spatial distribution of the crambine stem borer, Chilo partellus (Swinhoe) were investigated in maize, Zea mays, and sorghum, Sorghum bicolor, fields at the Kenya coast. During the vegetative growth stage, small-sized larvae were typically found behind leaf sheaths and in whorls in maize and sorghum. In reproductive and senescent maize, small-sized larvae were also found feeding in ears. Later immature life stages were located predominantly in stems in sorghum, and in the stems and ears in maize. Density and variance estimates of small, medium-, and large-sized larvae and pupae in maize and sorghum were fitted to Taylor's power law which provided significant regressions in all cases. The between-plant distribution was aggregated in all life stages. In maize, the distribution remained aggregated through the larval and pupal life stages, but in sorghum the distribution became progressively less aggregated as insects aged. The relationship of C. partellus density to the proportion of plants infested also suggested aggregation. Optimal sample sizes were determined for both binomial and enumerative sampling plans at two levels of precision, and a discussion is included on the relationship of optimal sample sizes to economic injury levels. Additionally, a presence/absence sequential sampling plan is proposed.

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Section: Introductionmentioning

confidence: 95%

Distribution and sampling of Chilo partellus (Lepidoptera: Pyralidae) in maize and sorghum on the Kenya coast

Overholt

Ogedah

Lammers

1994

Bull. Entomol. Res.

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“…Farid et al (2007) reported 10 to 50% damage in the Peshawar Valley, Pakistan. Yield losses caused by stem borers in Africa have been as high as 80 to 88% in maize (Van den Berg, 2009;Kfir, 1990) and as much as 88% in sorghum (Seshu Reddy, 1988). This pest was recorded for the first time in maize fields in some provinces in the East Mediterranean region of Turkey in 2014 and 2015 (Sertkaya et al, 2014;Bayram & Tonğa, 2015).…”

Section: Introductionmentioning

confidence: 99%

First record of the egg parasitoids of Chilo partellus (Swinhoe, 1885) (Lepidoptera: Crambidae) in Turkey unveiled by DNA Barcoding

Can

Kaya

Ulaşli

et al. 2016

Turkish Journal of Entomology

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Chilo partellus (Swinhoe) (Lepidoptera: Crambidae) is an invasive insect species attacking maize (Zea mays L.) and other cereal crops causing important yield losses. The occurrence of this insect in Turkey was first reported in maize growing areas of some provinces in the East Mediterranean region of Turkey in 2014. Chemical or other pest control methods do not always provide acceptable control of this pest, so biological control is considered an important alternative. However, for a successful biological control, the first step is to reliably identify the natural enemies of a target pest, which is difficult to achieve using methods based on morphology. Recent developments in molecular techniques allow more reliable identification of insect species and their parasitoids. Therefore, the aim of this study was to identify the egg parasitoids of C. partellus by molecular methods. Parasitized eggs were collected from maize fields in Hatay province, Turkey, from September to October 2014 and in September 2015. Eggs were maintained in the laboratory and emerging adult parasitoids were subjected to molecular analysis. Using DNA barcoding, two native natural enemies, Trichogramma brassicae Bezdenko (Hymenoptera: Trichogrammatidae) and Telenomus busseolae (Gahan) (Hymenoptera: Platygastridae) were identified as egg parasitoids of C. partellus for the first time in Turkey.

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“…Some of these reports were by Jotwani and Srivastava (1984), Dreyer ( , 1987, Heinrich (1987), Seshu-Reddy (1988), Heiberd (1990), Aldhous (1992), Kairie and Saxena (1993) and Hellpa (2000). Neem products used as pesticides are not known to be hazardous to non-target organisms (Ahmed and Grainge 1986;Anaso 1999;Ermel et al 2002).…”

Section: Introductionmentioning

confidence: 98%

Influence of Some Inert Diluents of Neem Kernel Powder on Protection of Sorghum Against Pink Stalk Borer (Sesemia Calamistis, Homps) in Nigerian Sudan Savanna

Okrikata¹,

Anaso²

2008

Journal of Plant Protection Research

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Assessment of On-Farm Yield Losses in Sorghum Due to Insect Pests

Cited by 11 publications

References 6 publications

Distribution and sampling of Chilo partellus (Lepidoptera: Pyralidae) in maize and sorghum on the Kenya coast

Distribution and sampling of Chilo partellus (Lepidoptera: Pyralidae) in maize and sorghum on the Kenya coast

First record of the egg parasitoids of Chilo partellus (Swinhoe, 1885) (Lepidoptera: Crambidae) in Turkey unveiled by DNA Barcoding

Influence of Some Inert Diluents of Neem Kernel Powder on Protection of Sorghum Against Pink Stalk Borer (Sesemia Calamistis, Homps) in Nigerian Sudan Savanna

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