Infestation of Spodoptera frugiperda on corn in Bengkulu at different elevations

Q4 Agricultural and Biological Sciences

Jurnal Hama dan Penyakit Tumbuhan Tropika Pub Date : 2024-02-06 DOI:10.23960/jhptt.12438-47

S. Ginting, M. Chozin, S. Sudjatmiko

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Abstract

Pest infestation is a significant challenge in corn cultivation due to the potential damage it can cause, leading to reduced crop productivity or even complete crop failure. This study aims to assess the infestation of Spodoptera frugiperda on corn in Bengkulu, considering various elevations. Ten hybrids resulting from crosses between promising lines (Caps 2 x Caps 17A, Caps 3 x Caps 17A, Caps 3 x Caps 17B, Caps 5 x Caps 22, Caps 5 x Caps 17B, Caps 15 x Caps 22, Caps 17B x Caps 23, Caps 17A x Caps 17B, Caps 17A x Caps 22, Caps 22 x Caps 23) and three commercial hybrid varieties (Bonanza, Paragon, and Secada) were evaluated across three locations at different elevations: lowland (30 meters above sea level) (masl), midland (600 masl), and highland (1000 masl). The assessment focused on the extent of damage and the plant’s resistance to S. frugiperda infestations. The infestation of S. frugiperda is higher at an elevation of 30 masl compared to locations at 600 masl and 1000 masl. Scoring leaf damage caused by S. frugiperda infestation at 30 masl: 2.73–4.86, at 600 masl: 2.73–3.55, and at 1000 masl: 2.4–3.37.

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不同海拔地区明古鲁玉米上的 Spodoptera frugiperda 侵染情况

虫害是玉米种植过程中面临的一个重大挑战，因为虫害可能造成损害，导致作物产量下降，甚至完全歉收。本研究旨在评估不同海拔地区明古鲁玉米上的鞘翅目害虫。研究人员在三个不同海拔高度的地点对 10 个杂交种（Caps 2 x Caps 17A、Caps 3 x Caps 17A、Caps 3 x Caps 17B、Caps 5 x Caps 22、Caps 5 x Caps 17B、Caps 15 x Caps 22、Caps 17B x Caps 23、Caps 17A x Caps 17B、Caps 17A x Caps 22、Caps 22 x Caps 23）和三个商业杂交品种（Bonanza、Paragon 和 Secada）进行了评估：低地（海拔 30 米）、中地（海拔 600 米）和高地（海拔 1000 米）。评估的重点是损害程度和植物对蚜虫侵袭的抵抗力。与海拔 600 米和 1000 米的地点相比，海拔 30 米处的恙螨危害程度更高。在海拔 30 米处，恙虫造成的叶片损害评分为：2.73-4.86；在海拔 600 米处，评分为：2.73-3.55；在海拔 1000 米处，评分为：2.4-3.37。

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