Evaluation of Concentration and Application Frequency of Beauveria bassiana as a Biological Agent to Supress Whitefly (Bemisia tabaci) Population on Chili Pepper (Capsium frutescens L.)

Arlinda Agustina, . (2025) Evaluation of Concentration and Application Frequency of Beauveria bassiana as a Biological Agent to Supress Whitefly (Bemisia tabaci) Population on Chili Pepper (Capsium frutescens L.). Skripsi thesis, Universitas Pembangunan Nasional Veteran Yogyakarta.

	Text 1_Cover_134210159_Arlinda Agustina.pdf Download (170kB)
	Text 2_Abstrak_134210159_Arlinda Agustina.pdf Download (181kB)
	Text 3_Lembar Pengesahan_134210159_Arlinda Agustina.pdf Download (837kB)
	Text 4_Daftar Isi_134210159_Arlinda Agustina.pdf Download (190kB)
	Text 5_Daftar Pustaka_134210159_Arlinda Agustina.pdf Download (142kB)
	Text 6_Skripsi Full_134210159_Arlinda Agustina.pdf Restricted to Repository staff only Download (2MB)

Abstract

The whitefly (Bemisia tabaci Genn.) is a major pest of Bird’s eye chili (Capsicum frutescens L.) that reduces crop yield through direct feeding damage and by transmitting Pepper Yellow Leaf Curl Virus (PepYLCV). This study aimed to evaluate the effectiveness of Beauveria bassiana at various concentrations and application frequencies in suppressing whitefly populations. The experiment employed a factorial Completely Randomized Design (CRD) with two factors, namely B. bassiana concentrations (10 g/L, 20 g/L, and 30 g/L) and application frequencies (once a week and once every two weeks). The control treatments consisted of distilled water and imidacloprid 30 WP at 0.5 g/L. Data were analyzed using Analysis of Variance (ANOVA) at the 5% significance level, followed by Duncan’s Multiple Range Test (DMRT) at the 5% level. Differences between the control and treatment combinations were further examined using orthogonal contrast tests. The results showed an interaction between B. bassiana concentrations and application frequencies on whitefly mortality at 14 DAA and fruit weight per plant at 65 DAP. Applications of B. bassiana at concentrations of 20 g/L and 30 g/L produced the best outcomes across all parameters, including the lowest whitefly populations (2.67 and 2.75 individuals), the highest mortality (48.11% and 46.74%), the highest insecticidal efficacy (93.23% and 92.99%), the lowest infestation intensity (5.13% and 5.14%), and the highest total fruit weight per plant (81.11 g and 83.64 g, respectively). Once every week application frequency also resulted in superior performance, yielding the lowest whitefly population (2.89 individuals), highest mortality (36.22%), highest insecticidal efficacy (92.67%), lowest infestation intensity (8.04%), and highest total fruit weight per plant (81.66 g).

Item Type:	Tugas Akhir (Skripsi)
Additional Information:	Arlinda Agustina (Penulis - 134210159) R. R. Rukmowati Brotodjojo (Pembimbing)
Uncontrolled Keywords:	Beauveria bassiana, whitefly, chili pepper plants
Subjek:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Pertanian > (S1) Agroteknologi
Depositing User:	Bayu Pambudi
Date Deposited:	29 Dec 2025 09:30
Last Modified:	29 Dec 2025 09:30
URI:	http://eprints.upnyk.ac.id/id/eprint/46419

Actions (login required)

View Item