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Journal : Dinamika Pertanian

UJI BEBERAPA KONSENTRASI TEPUNG DAUN BABADOTAN (Ageratum conyzoides L.) UNTUK MENGENDALIKAN HAMA KUMBANG BIJI KACANG HIJAU (Callosobruchus chinensis L.) DI PENYIMPANAN Adhytia Ika Pramesty; Desita Salbiah
DINAMIKA PERTANIAN Vol. 38 No. 3 (2022): Jurnal Dinamika Pertanian Edisi Desember 2022
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2022.vol38(3).11905

Abstract

Callosobruchus chinensis L. is a pest that can damage and reduce the quality of mung bean seeds in storage. Pest control can be done using botanical insecticide babadotan plants (Ageratum conyzoidez L.). This research aims to obtain an effective concentration of babadotan leaf flour against C. chinensis in storage. The research was conducted at the Plant Pest Laboratory, Faculty of Agriculture, University of Riau. The research used a completely randomized design (CRD) with six treatments and four replications. The treatments were given several concentrations of babadotan leaf flour 5 g.100 g-1, 6 g.100 g-1, 7 g.100 g-1, 8 g.100 g-1, 9 g.100 g-1 dan 10 g.100 g-1 mung bean seeds. The parameters observed were an initial time of death, Lethal time 50, daily mortality, total mortality, individual increase, and weight loss of seeds. The results showed that the concentration of babadotan leaf flour 9 g.100 g-1 mung bean seeds was effective to control C. chinensis because it could cause total mortality at 87.50% with an initial time of death of 7.50 hours after application and Lethal time of 50 of 33.75 hours after application and resulted in an increase of 5.50 individuals and was lead to a weight loss percentage of mung beans seeds by 0,70%.
UJI BEBERAPA KONSENTRASI EKSTRAK TEPUNG DAUN PAITAN (Tithonia diversifolia A. Gray) TERHADAP MORTALITAS LARVA PENGGEREK TONGKOL JAGUNG Helicoverpa armigera Hubner Sandi Syahputra; Rusli Rustam; Desita Salbiah
DINAMIKA PERTANIAN Vol. 38 No. 3 (2022): Jurnal Dinamika Pertanian Edisi Desember 2022
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2022.vol38(3).11906

Abstract

Borer pest of corn cobs (Helicovepa armigera Hubner) is a major pest of corn. Pest control can be done using plant-based insecticides from paitan leaf extract (Tithonia diversifolia A. Gray). This study aims to obtain the best concentration of paitan leaf extract in controlling corn cob borer Helicoverpa armigera. The study was conducted at the Plant Pest Laboratory of the Faculty of Agriculture, University of Riau. The research was carried out using a completely randomized design (CRD), consisting of 5 treatments and 4 replications. The treatments used were several concentrations of paitan leaf extract, namely 0 gl-1, 25 gl-1, 50 gl-1, 75 gl-1and 100 gl-1. Parameters observed were initial death, lethal time 50, lethal concentration (LC50 and LC95), daily mortality, and total mortality. data. Data were collected from daily mortality and then descriptively analyzed and displayed graphically. Data lethal concentration (LC50 and LC95) were analyzed probit using the POLO-PC program, while other data such as initial death, total mortality, and lethal time (LT50) were analyzed with analysis of variance. Data from the variance analysis with significant effect will be continued using the smallest significant difference (LSD) test at the 5% level. Results showed that the application of paitan leaf extract with a concentration of 100 gl-1 water was able to control H. armigera with mortality of 55.00%. The proper concentration to lead mortality of 50% of larvae H. armigera was 10.3% or equal to 103 gl-1 of water of paitan leaf extract. Meanwhile, the proper concentration to lead mortality of 95% of larvae population H. armigera was 44.7% or equivalent to 447 gl-1 water of paitan leaf extract.
PENGGUNAAN FILTRAT RIMPANG JAHE MERAH (Zingiber officinale var. Rubrum) TERHADAP HAMA ULAT BAWANG MERAH (Spodoptera exigua H.) Riri Dwiyanti; Desita Salbiah
DINAMIKA PERTANIAN Vol. 38 No. 3 (2022): Jurnal Dinamika Pertanian Edisi Desember 2022
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2022.vol38(3).11907

Abstract

Spodoptera exigua H. is a pest on shallot plants. S. exigua pest control is usually performed using synthetic insecticides. However, its use can cause negative impacts on humans and the agricultural environment. Therefor, it needs the alternative insecticides that are safer and environmentally friendly such as Zingiber officinale var. Rubrum. The purpose of this research was to obtain the effective concentration of red ginger rhizome filtrate to control the pest Spodoptera exigua H. The research was conducted at the experimental farm of the Faculty of Agriculture, Riau University from September to November 2019. Experiments were carried out using a completely randomized design (CRD) with 5 treatments and 4 replications. The red ginger rhizome filtrate concentration treatment used was 0 ml.l-1 water, 20 ml.l-1 water, 40 ml.l-1 water, 60 ml.l-1 water, dan 80 ml.l-1 water. The results showed that the concentration of red ginger rhizome filtrate 60 ml.l-1 water could control pests S. exigua and could cause total mortality of 82,50% with an initial death time of 7 hours and lethal time 50 of 40,25 hours.
KEEFEKTIFAN TEPUNG BIJI PINANG (Areca catechu L.) TERHADAP MORTALITAS HAMA KUMBANG BUBUK BERAS (Sitophilus oryzae L.) DI PENYIMPANAN Desita Salbiah; Melani Fitriana
DINAMIKA PERTANIAN Vol. 41 No. 1 (2025): Jurnal Dinamika Pertanian Edisi April 2025
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2025.vol41(1).22171

Abstract

Rice is the staple food of the Indonesian population. The decline in rice quality is caused by the attack of plant pests during storage, particularly Sitophilus oryzae L. A recommended control method is the use of plant-based insecticide, namely areca nut (Areca catechu L.) seed powder. This research aims to determine the effective dose of areca nut seed powder (A. catechu L.) for controlling rice weevil (S. oryzae L.) mortality during storage. The research was conducted at the Plant Pest Laboratory of the Faculty of Agriculture at Riau University from November 2024 to January 2025. The study was conducted experimentally using a completely randomized design with five treatments and four replications. The study consisted of two series: the first included 20 experimental units to observe initial mortality time, lethal time 50, daily mortality, and total mortality, while the second included 20 experimental units to observe population growth and rice weight loss. The doses of areca nut seed powder used for each experimental unit were 0 g.100 , 2.5 g.100 , 5 g.100 , 7.5 g.100 , and 10 g.100 . Data were analyzed statistically using the DMRT test at the 5% level. The results showed that a dose of 10 g.100  rice was the most effective for controlling S. oryzae, causing a total mortality of 82.5% with an initial mortality time of 28.25 hours after application and a lethal time 50 of 169.5 hours. It resulted in the lowest percentage of rice weight loss at 0.95% and the lowest increase in insect population, with only 3.25 individuals.
EFEKTIVITAS KONSENTRASI EKSTRAK TEPUNG DAUN SIRSAK (Annona muricata L.) TERHADAP MORTALITAS ULAT GRAYAK JAGUNG Spodoptera frgiperda J. E. Smith DI LABORATORIUM Desita Salbiah; Frida Indriatik
DINAMIKA PERTANIAN Vol. 41 No. 2 (2025): Jurnal Dinamika Pertanian Edisi Agustus 2025
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2025.vol41(2).22299

Abstract

Spodoptera frugiperda is a pest that can cause the failure of young leaf formation in corn plants because it attacks the growing point of the plant. This pest can cause yield losses of 15%–73% in corn plants. Soursop leaf flour (Annona muricata L.) insecticide can serve as a safe alternative for controlling S. frugiperda. The study aims to determine an optimal concentration of soursop leaf flour (Annona muricata L.) extract that induces mortality in Spodoptera frugiperda J. E. Smith. This study was conducted at the Plant Pest Laboratory, Faculty of Agriculture, University of Riau, from July to September 2024, using a Completely Randomized Design (CRD) with five treatments and four replications. The treatment application consisted of soursop leaf flour extract at concentrations of 0 g·l⁻¹, 25 g·l⁻¹, 50 g·l⁻¹, 75 g·l⁻¹, and 100 g·l⁻¹ in water. Based on the results of administering several concentrations of soursop leaf flour extract to S. frugiperda, it was concluded that the concentration of soursop leaf flour extract at 100 g·l⁻¹ in water was an effective concentration against the mortality of Spodoptera frugiperda J. E. Smith larvae, as it caused a total mortality of 85% with an initial time of death of 21 hours after application. The appropriate concentration of soursop leaf flour extract to kill 50% of S. frugiperda larvae was 2.62%, or 26.2 g·l⁻¹ in water. The appropriate concentration to kill 95% of S. frugiperda larvae was 27.55%, or equivalent to 275 g·l⁻¹ in water.
UJI KONSENTRASI EKSTRAK DAUN MIMBA (Azadirachta indica A. Juss) TERHADAP MORTALITAS ULAT BAWANG Spodoptera exigua Hubner. DI LABORATORIUM Desita Salbiah; Muhammad Tawi
DINAMIKA PERTANIAN Vol. 41 No. 3 (2025): Jurnal Dinamika Pertanian Edisi Desember 2025
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2025.vol41(3).23222

Abstract

Spodoptera exigua is a pest that poses a major problem for farmers because it can reduce crop yields and cause significant damage to shallot crops. Infestation by S. exigua can result in yield losses of 34–54% in shallot plants. Neem leaf botanical insecticide (Azadirachta indica A. Juss.) can be used as a safe alternative for controlling S. exigua. This study aimed to determine the effective concentration of neem leaf extract against the mortality of the beet armyworm pest, Spodoptera exigua Hübner, in the laboratory. The study was conducted at the Plant Pest Laboratory, Faculty of Agriculture, University of Riau, from March to May 2024, using a Completely Randomized Design (CRD) with six treatments and four replications. The treatment applications consisted of neem leaf extract concentrations of 0 g·l⁻¹ water, 20 g·l⁻¹ water, 40 g·l⁻¹ water, 60 g·l⁻¹ water, 80 g·l⁻¹ water, and 100 g·l⁻¹ water. The results showed that the most effective concentration for controlling S. exigua was 60 g·l⁻¹ of neem leaf powder extract, which resulted in a total mortality rate of 80%, with the onset of death occurring 18 hours after application.
UJI KONSENTRASI EKSTRAK DAUN MIMBA (Azadirachta indica A. Juss) TERHADAP MORTALITAS ULAT BAWANG Spodoptera exigua Hubner. DI LABORATORIUM Desita Salbiah; Muhammad Tawi
DINAMIKA PERTANIAN Vol. 41 No. 3 (2025): Jurnal Dinamika Pertanian Edisi Desember 2025
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/dp.2025.vol41(3).23222

Abstract

Spodoptera exigua is a pest that poses a major problem for farmers because it can reduce crop yields and cause significant damage to shallot crops. Infestation by S. exigua can result in yield losses of 34–54% in shallot plants. Neem leaf botanical insecticide (Azadirachta indica A. Juss.) can be used as a safe alternative for controlling S. exigua. This study aimed to determine the effective concentration of neem leaf extract against the mortality of the beet armyworm pest, Spodoptera exigua Hübner, in the laboratory. The study was conducted at the Plant Pest Laboratory, Faculty of Agriculture, University of Riau, from March to May 2024, using a Completely Randomized Design (CRD) with six treatments and four replications. The treatment applications consisted of neem leaf extract concentrations of 0 g·l⁻¹ water, 20 g·l⁻¹ water, 40 g·l⁻¹ water, 60 g·l⁻¹ water, 80 g·l⁻¹ water, and 100 g·l⁻¹ water. The results showed that the most effective concentration for controlling S. exigua was 60 g·l⁻¹ of neem leaf powder extract, which resulted in a total mortality rate of 80%, with the onset of death occurring 18 hours after application.