Phytotoxicity in pearl millet varies among in-furrow insecticides

Kennedy, Charles

doi:10.1016/s0261-2194(02)00040-6

Cited by 14 publications

(7 citation statements)

References 10 publications

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“…They are considered primary pests on grains, fruits, seeds and vegetable crops (Schaefer & Panizzi 2000). Chinch bug and European corn borer are known for causing significant damage to pearl millet (Andrews et al 1996), but according to Kennedy (2002) and Hudson (1995), chinch bug causes the most damage in pearl millet fields, especially when grown closer to maize or sorghum fields, since the insect can quickly move to the later-planted pearl millet.…”

mentioning

confidence: 99%

Insect Incidence and Damage on Pearl Millet (Pennisetum glaucum) Under Various Nitrogen Regimes in Alabama

Obeng

Cebert

Ward

et al. 2015

Florida Entomologist

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mentioning

confidence: 99%

Insect Incidence and Damage on Pearl Millet (Pennisetum glaucum) Under Various Nitrogen Regimes in Alabama

Obeng

Cebert

Ward

et al. 2015

Florida Entomologist

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“…Because of the importance of chinch bug as a key pest of pearl millet in both forage and grain production, recent reports have examined several management strategies, such as insecticides (Kennedy 2002, Buntin et al 2007b, crop rotation (Buntin et al 2007a), and host resistance (Starks et al 1982, Wilson et al 2000, Ni et al 2007, Rajewski et al 2009). When 16 grain pearl millet germplasms were evaluated using injury parameters (i.e., stunt and necrosis ratings, percentage of tiller loss, and crop stand loss), Ni et al (2007) determined that ÔTifGrain 102Õ had moderate level of chinch bug resistance.…”

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confidence: 99%

Differential Responses of Forage Pearl Millet Genotypes to Chinch Bug (Heteroptera: Blissidae) Feeding

Wilson

Buntin

2009

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Chinch bug, Blissus leucopterus leucopterus (Say) (Heteroptera: Blissidae), is one of the most important insect pests on forage pearl millet, Pennisetum glaucum L. R. Br., production in the southeastern United States. Twenty-nine forage pearl millet genotypes were assessed for chinch bug resistance by using stunt and necrosis ratings in combination with quantitative measurements of chlorophyll content and leaf photosynthetic rate. Plant stunt and leaf sheath necrosis ratings, and chlorophyll content in flag leaves differed among the 29 genotypes. Photosynthetic rate differed both among the noninfested control and among the chinch bug-infested plants. The chinch bug-infested plants had lower photosynthetic rate than the noninfested control plants. Inbreds with resistance superior to that of Tift 23DB were identified for hybrid development. When the 29 pearl millet genotypes were assessed by the six parameters by using cluster analysis, genotypes 07F-1226, 07F-1229, 07F-1231, 07F-1235, 07F-1238, 07F-1239, and 07F-1240 were the most resistant, whereas the genotypes 07F-1220, 07F-1221, 07F-1225, 07F-1227, 07F-1232, 07F-1246, and Tift 23DB were the most susceptible to chinch bug feeding. The rest of the genotypes expressed intermediate responses to the six parameters. To differentiate the physiological impact of chinch bug feeding on light and dark reactions of plant photosynthesis, photosynthesis capacity was assessed using light and CO2 (A/Ci) response curves on noninfested and chinch bug-infested plants of genotypes 07F-1246, 07F-1223, and 07F-1245, which expressed low, intermediate, and high chlorophyll content, respectively. Based on the A/Ci curves, photosynthesis capacity of injured leaves was suppressed in 07F-1223 and 07F-1246, whereas the chinch bug-injured 07F-1245 leaves showed an increase of photosynthetic rate compared with the noninfested plants. In contrast, light response curves were suppressed in the chinch bug-injured plants compared with the noninfested plants of all three genotypes, irrespective of their variations in insect injury ratings. This research demonstrated that visual stunt and necrosis rating methods in combination with chlorophyll and photosynthesis measurements could be used in screening forage pearl millet for chinch bug resistance and deciphering the underlying resistance mechanisms.

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“…A reduction in plant population was, however, noted here at one of two study locations with terbufos. Phytotoxic effects on seedling emergence were previously reported with terbufos on pearl millet (Kennedy 2002) and reduced plant growth for no-till, non-irrigated grain sorghum (Matocha 1990), as well as a phytotoxic interaction with in-furrow applications of this insecticide to corn following the broadcast application of a sulfonylurea herbicide (Biediger et al 1992). However, neither of the soil-applied residual herbicides (S-metolachlor or atrazine) used in this study were observed to have a phytotoxic interaction such as reduced top fresh weights or leaf chlorosis with terbufos, so the cause of the reduced plant populations in terbufos-treated corn is unknown.…”

Section: Implications For Rkn Management On Corn In the Southern Coasmentioning

confidence: 79%

Root-knot Control and Yield Response of Corn with Seed Treatment and Granular Nematicides

Hagan

Miller

Burkett

et al. 2015

Plant Health Progress

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In Coastal Plain soils of the southeastern United States, the root-knot nematode (RKN) Meloidogyne incognita race 3 causes significant yield loss in corn. Impact of abamectin + thiamethoxam and clothianidin + Bacillus firmus I-1582 nematicide seed treatments along with terbufos granular nematicide on RKN reproduction, plant populations, plant growth, and yield was assessed at two Alabama sites. Thiamethoxam and clothianidin insecticide seed treatments were included as controls. A factorial arranged as split-split plot with year as the main plot, seed treatment as the split plot, and granular nematicide as the split-split-plot treatment was used. Lower plant populations were noted for terbufos-treated corn at one study site. Reduced RKN reproduction was observed with terbufos granular nematicide at both study sites. Fresh seedling weights and yields were usually higher for the terbufos- than non-terbufos-treated corn. At both sites, both nematicide seed treatments and their insecticide seed treatment counterparts had similar plant populations, RKN reproduction rate, and fresh seedling weights. Yield differences were noted at both locations between abamectin + thiamethoxam and thiamethoxam but not clothianidin + Bacillus firmus I-1582 and clothianidin. With mean yield gains up to 13.5%, terbufos was superior to both of the nematicide seed treatments for managing RKN and protecting corn yields. Accepted for publication 19 October 2015. Published 1 November 2015.

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Phytotoxicity in pearl millet varies among in-furrow insecticides

Cited by 14 publications

References 10 publications

Insect Incidence and Damage on Pearl Millet (Pennisetum glaucum) Under Various Nitrogen Regimes in Alabama

Insect Incidence and Damage on Pearl Millet (Pennisetum glaucum) Under Various Nitrogen Regimes in Alabama

Differential Responses of Forage Pearl Millet Genotypes to Chinch Bug (Heteroptera: Blissidae) Feeding

Root-knot Control and Yield Response of Corn with Seed Treatment and Granular Nematicides

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