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Roosda, Anna Aina
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Agriculture, Biological Sciences & Forestry

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The effectiveness of garlic extract against Spodoptera litura on Chili Firmansyah, Efrin; Hidayat, Cecep; Roosda, Anna Aina; Pradana, Adinda Nurul Fatah Adi; Soelistijono, R
Kultivasi Vol 22, No 3 (2023): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v22i3.50318

Abstract

Spodoptera litura is a polyphagous pest and attack many families of cultivated plants, such as chili plants. Application of synthetic pesticides is still the mainstay for controlling this pest in the field. To support eco-friendly plant protection management, it is important to explore potential natural materials such as garlic extract. This research aims to determine the potential of garlic extract in controlling S. litura on chili plants, and to see its indirect effect on chili yield. The research was carried out in two sites, in the laboratory and the field. The experiment used a completely randomized design with 6 treatments and 4 replications. The concentrations of garlic extract, i.e., control (0%), 24%, 26%, 28%, 30%, and 32%. The results showed the application of garlic extract had a significant effect on the mortality of S. litura, the frequency of attacks, and the intensity of pest attacks in the field, and had an effect on the variable number of fruit and fruit weight of chili plants. The LC50 and LC90 values reached 19.66% and 29.97% in the laboratory, and 28.30% and 34.3%% in the field, respectively. The LT50 and LT90 values from the 32% garlic extract in the laboratory were respectively 3.37 and 7.23 days. The application of garlic extraction affected growth and yield, i.e. healthy leaves, number of fruits, and weight of fruits in chili. The garlic extract is potentially used as an organic pesticide to suppress the S.litura attacks while keeping the plant's growth and yield. 
Growth and yield of bok choy (Brassica rapa L.) plants in post-rock excavation soils provided with phosphate-solubilizing bacteria and manure Hidayat, Cecep; Rachmawati, Yati Setiati; Utami, Dhea Rizqi; Hasani, Sofiya; Roosda, Anna Aina; Chandria, Windhy
Kultivasi Vol 23, No 3 (2024): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v23i3.58195

Abstract

Elevated sand and gravel mining to meet market needs causes negative impacts on the environment, soil, and biodiversity. The government issued a regulation that requires revegetation as reclamation of mineral and coal mining. The conversion needs to overcome the physical and chemical characteristics of post-rock excavation soil that can be utilized by economic value plants such as bok choy. This experiment aimed to determine the growth and yield of bok choy on post-rock excavation soil by providing phosphate solubilizing bacteria (PSB) and various manure types. The study was conducted in Margasari Village, Buah Batu District, Bandung at an altitude of 671 m above sea level and at the Soil Biotechnology Laboratory, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung from April to June 2023. The experimental design used was a factorial Randomized Block Design (RBD) with two factors and repeated three times. The first factor was PSB isolate dose (without PSB; 5 mL polybag-1; 10 mL polybag-1; 15 mL polybag-1, and 20 mL polybag-1). The second factor was manure variety (cow, goat, and laying hen manure, each of 15 t ha-1). The parameters observed comprised the soil and plant parameters. The results showed that there was no interaction between the dose of PSB isolate and various types of manure on the growth and yield of bok choy plants. The PSB isolate and manure had not been able yet to increase the growth and yield of Bok Choy (Brassica rapa L.) plants on post-rock excavation soil, mainly due to the soil nature.
Co-Authors Cecep Hidayat Cecep Hidayat Chandria, Windhy Firmansyah, Efrin Pradana, Adinda Nurul Fatah Adi R Soelistijono Rachmawati, Yati Setiati Sofiya Hasani, Sofiya Utami, Dhea Rizqi