Article Per Year (5 Year)
p-Index From 2020 - 2025
0.751
P-Index
This Author published in this journals
All Journal Jurnal Biologi Tropis Indonesian Journal of Agriculture and Environmental Analytics
Ilwati, Uun
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Health Professions Immunology & microbiology Physics

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Affect of PGPR Concentration (Plant Growth Promoting Rhizobacteria) on Growth and Yield of Some Sorghum Varieties in Dry Land Ilwati, Uun; Ujianto, Lestari; Suwardji, Suwardji
Indonesian Journal of Agriculture and Environmental Analytics Vol. 4 No. 2 (2025): July 2025
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijaea.v4i2.15129

Abstract

This study aims to determine the effect of PGPR concentration and sorghum variety on the growth and yield of sorghum plants. The experimental design used in this study was a randomised block design with a factorial experiment. This experimental design consisted of two factors, namely PGPR concentration (K0 without PGPR, K1 with 20 ml/l PGPR per plant, K2 with 40 ml/l PGPR per plant, and K3 with 60 ml/l PGPR per plant) and sorghum variety (V1 is the Soper 9 variety, V2 is the SR2401 variety, and V3 is the SR2404 variety). Based on the analysis of the research results, it was found that PGPR concentration and sorghum variety significantly influenced several sorghum growth parameters, including the number of leaves, leaf area, and stem diameter, but did not significantly differ in plant height. For sorghum yield parameters, concentration and variety significantly influenced 1000-seed weight, root length, panicle length, seeds per panicle, wet weight, and Brix content. The interaction between PGPR concentration and sorghum variety significantly influenced seeds per panicle. A PGPR concentration of 60 ml/l yielded higher results compared to other concentrations, and the SR2404 variety had a significant effect on all observed parameters. It is hoped that this study can serve as a reference and guideline for farmers and the general public in determining the variety and PGPR concentration to be used in sorghum cultivation on dry land.
Parasitoids and Predators as Biological Agents against White Stem Borer (Scirpophaga innotata) Arum Dewi, Pervitara; Wahyuni, Srilah Nora; Ilwati, Uun; Akram, Ahdiatsa Hairi; Sarjan, M.
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.6976

Abstract

One of the primary challenges in rice cultivation is the disturbance caused by pest infestations. Among the pests that frequently cause damage to rice plants is the white rice stem borer (Scirpophaga innotata). The life cycle of Scirpophaga innotata comprises egg, larva, pupa, and adult stages. This article is based on a literature review and discusses the natural enemies most commonly encountered at each stage of the Scirpophaga innotata life cycle. The findings of this article can be summarized as follows: Natural enemies of the white rice stem borer during the egg stage include parasitoids such as Trichogramma japonicum Ashm., Tetrastichus schoenobii, and Telenomus rowani, as well as the predator Conocephalus sp. During the larva-pupa stage, parasitoids such as Apantheles sp., Bracon sp., Tropobracon sp., and Temelucha bigutella are present, along with predators like Miscrapis crocea and Harmonia octomaculata. Regarding the adult stage, parasitoids were not found to be natural enemies of adult S. innotata. However, the most commonly encountered predators include Coccinella transversalis (Thunberg) and Paederus sp.
The Potential of Natural Enemies as Biological Control Agents for Various Pests on Water Spinach (Ipomoea aquatica F.) Wahyuni, Srilah Nora; Ilwati, Uun; Akram, Ahdiatsa Hairi; Dewi, Pervitara Arum; Sarjan, Muhammad
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): July - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i3.6996

Abstract

Arthropods have the potential as biological control agents for various pests in kale plants. Some arthropod species have potential as natural enemies for biological control of plant pests due to their abundance and availability in the ecosystem. Some natural enemy arthropods consist of insects and spiders. Natural enemies found in the location of West Lombok District, NTB act as predators and parasitoids of pests on kale plants. The number of orders found were Araneae, Coleoptera, Hemiptera, Odonata and Hymenoptera. Four orders act as predators and one order, Hymenoptera as parasitoids. Natural enemy arthropods found that have the potential as natural enemies of pests in kale plants were found as many as 10 species, namely Argiope catenulate, Cicurina sp.., Oxyopes attenuates, Lepthypanthes tenuis, Cheilomenes sexmaculata, Coreus Marginatus, Leptoglossus occidentali sp., Onychogomphus forcipatus, Agriocnemis pieris, and Doryctobracon areolatus. While in Ogan Ilir District, South Sumatra, 1 species was found that acts as a natural enemy of the Hemiptera order, Gonocerus acuteangulatus.
The Effect of Mycorrhiza on Sorghum Plants in Dryland Areas Ilwati, Uun; Sudharmawan, A. A. K; Sudantha, I Made
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2b.8087

Abstract

Sorghum is one of the cereal crops that can grow well in dry land. However, dry land has limitations in terms of soil nutrients and its structure, which does not retain water for long. The productivity of sorghum in dry land is still low, at 2-3 tons/ha, which is far from its potential yield of 6-7 tons/ha. This happens because the soil lacks essential nutrients. Along with the application of both organic and synthetic fertilizers, one possible approach is to incorporate mycorrhiza into the soil. This article seeks to explore how mycorrhiza influences sorghum plants in arid conditions. This article serves as a review of existing literature concerning sorghum and the influence of mycorrhiza on its growth. From the findings and discussions presented, it can be inferred that mycorrhiza affects the uptake of nutrients, growth, and yield of sorghum by enhancing the availability and absorption of nutrients in the soil, boosting antioxidant activity, increasing photosynthesis, and improving the plants' resilience to environmental stress. Furthermore, mycorrhiza also affects the improvement of the plant's defense system by increasing dry matter content, keeping leaf stomata open, and helping the accumulation of substances including substances like soluble sugars, proline, glycine betaine, organic acids, potassium, and calcium within the plant, which helps in the uptake of water. The application of mycorrhiza to sorghum plants in dry land is expected to support the sustainable increase in plant productivity, reduce the use of chemical fertilizers, and promote a more environmentally friendly farming system.
Co-Authors Akram, Ahdiatsa Hairi Arum Dewi, Pervitara Dewi, Pervitara Arum I Made Sudantha Lestari Ujianto, Lestari M. Sarjan, M. Muhammad Sarjan Sudharmawan, A. A. K Suwardji Wahyuni, Srilah Nora