We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Response of sorghum commercial hybrids to sugarcane aphid, Melanaphis sacchari (Hemiptera: Aphididae) and threshold-based chemical management in Guanajuato, Mexico.
- Authors
PECINA-QUINTERO, VÍCTOR; BUJANOS-MUÑIZ, RAFAEL; JIMÉNEZ-BECERRIL, MARÍA FERNANDA; MONTES-GARCÍA, NOÉ; YÁÑEZ-LÓPEZ, RICARDO; PECINA-BECERRIL, ANDREA; MAYEK-PÉREZ, NETZAHUALCOYOTL
- Abstract
The sugarcane aphid, Melanaphis sacchari (Hemiptera: Aphididae) (SCA) affects grain sorghum, Sorghum bicolor (Poaceae) production. The response of sorghum hybrids to SCA was evaluated during 2017 in Guanajuato, Mexico. Experiments were established under strip-plot designs with two factors (hybrids, threshold-based chemical management -TBCM- treatments) and under irrigated or dryland conditions. Experiments were established on two sowing dates at Celaya and Valle de Santiago (irrigated) using the SCA-tolerant hybrids APACHE, BRS-70, MEZQUITE, SCAP-618, and SCA-susceptible UPM-219. Dryland ex- periments were established at Celaya, Valle de Santiago, and Pénjamo using MEZQUITE, and SCAP-618 (tolerant), and lines UPM-219, SHORTER, and MAJESTIC-355 (susceptible). The TBCM strategies were a) with TBCM (seed treatment with thiamethoxam; flupyradifu- rone or sulfoxaflor applied to foliage), and b) without TBCM (control). Significant differences (p < 0.05) between treatments under irrigated and dryland conditions for the number of aphids per leaf and grain yield were found. APACHE, BRS-70, and MEZQUITE had the highest grain yields under both TBCM and no-TBCM. UPM-219 was competitive under TBCM con- ditions, but without TBCM showed total yield losses. The yield-aphid cumulative density lin- ear regressions were negatively significant (p = 0.05) to sorghum cultivated without TBCM. Irrigation increased 64 % grain yields compared with dryland experiments. TBCM increased grain yield (50 % in irrigated and 100 % in dryland conditions). TBCM increased grain yields and reduced cumulative SCA populations under irrigated or rainfed conditions, mainly for sus- ceptible sorghum. Resistant germplasm and TBCM could control SCA in sorghum cultivated in Guanajuato, mainly at late sowings frequently carried out under dryland conditions.
- Subjects
GUANAJUATO (Mexico); SORGHUM; INSECT pests; SUGARCANE; APHIDS; HEMIPTERA; GRAIN yields; SEED treatment
- Publication
Revista Colombiana de Entomología, 2023, Vol 49, Issue 1, p1
- ISSN
0120-0488
- Publication type
Article
- DOI
10.25100/socolen.v49i1.11682