JURNAL PROTEKSI TANAMAN TROPIKA

The Abundance Of Fruit Flies (Bactrocera spp.) on Citrus Tree Clones in Sleman Regency

2026-05-25T13:16:54+08:00

Fruit flies (Bactrocera spp.) are among the most serious pests in citrus production due to their high infestation potential and detrimental effects on fruit quality. This study examined fruit fly abundance based on sex and citrus tree clones and evaluated the impact of trap placement position on fruit fly populations in Sleman Regency, Indonesia. The experiment was conducted in August 2025 at Pusat Inovasi Agroteknologi, Universitas Gadjah Mada, employing a Completely Randomized Block Design with four trap placement treatments: medium inside, high inside, medium outside, and high outside. Medium and high trap heights were set at 1 m and 2 m above ground level, respectively, with traps positioned either inside or outside the tree canopy. Observations were performed at two-day intervals over 15 observation periods on three citrus species: Siamese orange (Citrus nobilis Lour.), kaffir lime (Citrus hystrix), and grapefruit (Citrus maxima (Burm.) Merr.). The results showed that fruit fly abundance was consistently higher in traps installed outside the tree canopy than in those placed inside across all citrus species and observation periods. No significant differences were detected between medium and high trap heights within the same placement location. Female fruit flies exhibited greater population variability than males, indicating higher sensitivity to environmental factors. Furthermore, correlation analysis revealed strong positive relationships among citrus clones, suggesting similar levels of susceptibility to fruit fly infestation. In conclusion, the findings highlight that trap placement location plays a more decisive role than trap height in influencing fruit fly abundance on citrus trees.

Effectiveness of Babadotan (Ageratum conyzoides L.) Leaf Extract in Suppresses the growth of the fungus Colletotrichum spp. In Vitro

2026-05-25T13:50:50+08:00

Chili is an important horticultural crop that is cultivated in large quantities every day. However, production is often disrupted by diseases, one of which is anthracnose caused by the fungus Colletotrichum spp. Environmentally friendly control can be done with natural ingredients such as babadotan extract which contains antifungal compounds such as steroids, terpenoids, phenols, saponins, fatty acids and alkaloids. This research aims to test the ability of babadotan (Ageratum conyzoides L.) leaf extract to suppress the growth of Colletotrichum spp. in vitro. The research took place at the Phytopathology Laboratory, Faculty of Agriculture, Lambung Mangkurat University from October 2023 to May 2024. The method used RAL with 5 treatments and 4 replications. The results showed that BCE treatment (9% babadotan leaf extract) had the lowest growth inhibition at 40.02%, while BCB (3%) 34.94%, BCC (5%) 22.39%, and BCD (7%) 8.52%.

Effectiveness of Bitter Mustard Biofumigant Against Root Knot Nematodes (Meloidogyne spp.) on Celery Plants (Apium graveolens L.)

2026-05-25T14:08:00+08:00

Celery plants (Apium graveolens L.) have export value and are included in the important leaf vegetable group. Disturbances caused by plant-disturbing organisms in celery cultivation are still a problem that is always faced by farmers. The pest that is often found infecting celery plants, especially in the Landasan Ulin Utara area, Liang Anggang District, Banjarbaru City, South Kalimantan Province, is the Root Knot Nematode (NPA) (Meloidogyne spp). The symptoms of this NPA attack are very typical, namely the roots become swollen because nematode attacks the root system and disrupts the root tissue. Therefore, before causing greater losses, it needs to be anticipated. Control can be carried out by means of biofumigation, namely using bitter mustard greens waste which comes from the Brassicae family because it contains glucosinolates (GSL) and isothiocyanate compounds (ITS). This research aims to determine whether biofumigants from chopped bitter mustard greens are effective in controlling Meloidogyne spp. on celery plants. This research used a one-factor Completely Randomized Design (CRD) method, namely treatment with 500 Meloidogyne spp eggs. (control/T0) and 4 treatments with chopped bitter mustard greens, namely 500 Meloidogyne spp. + 200 grams of chopped bitter mustard greens (T1) 500 eggs of Meloidogyne spp. + 400 grams of chopped bitter mustard greens (T2) 500 eggs of Meloidogyne spp. + 600 grams of chopped bitter mustard greens (T3) and 500 Meloidogyne spp eggs. + 800 grams of chopped bitter mustard greens (T4). The results of this study show that celery plants treated with T4 can reduce disease severity and the average number of NPA populations. The highest disease severity was found in T0 plants with a percentage of 45.0% and the lowest percentage was in T4 treatment plants at 4.2%. The highest NPA population was also found in T0 plants, namely 428,125 individuals and the lowest population was in T4 plants, amounting to 126,125 individuals.

Potential of Kirinyuh Leaf Extract (Chromolaena odorata L.) as Cacabean Weed Bioherbicide (Ludwigia sp.)

2026-05-25T15:03:10+08:00

Cacabean weed (Ludwigia sp.) is an invasive weed that disrupts the growth of main crops such as rice and corn. This research aims to assess the effectiveness of kirinyuh leaf extract (Chromolaena odorata L.) as a bioherbicide in suppressing the growth of Ludwigia sp. using concentrations of 25%, 50% and 75%. The research was designed using a Completely Randomized Design (CRD) with five treatments and four replications. The results showed that kirinyuh leaf extract had a significant effect on the phytotoxicity of Ludwigia sp., with symptoms of chlorosis, necrosis and tissue death. A concentration of 75% shows the highest effectiveness, equivalent to herbicides containing the active ingredient glyphosate. These findings show the potential of kirinyuh leaf extract as an environmentally friendly bioherbicide.

Effect of Giving Red Onion Peel Powder Regarding the Attack Intensity of Meloidogyne spp. on Celery Plants

2026-05-25T15:50:02+08:00

Root knot nematode attack Meloidogyne spp. is one of the main obstacles in cultivating celery (Apium graveolens L.) because it damages the root system and reduces crop yields. The use of botanical pesticides is an environmentally friendly alternative to reduce dependence on nematicides. This research aims to assess the effectiveness of shallot skin powder as a botanical pesticide in suppressing Meloidogyne spp. The experiment used a completely randomized design with five treatments including a control with powder doses (15, 20, 25 and 30 g/polybag) as well as four replications, each of which was inoculated with 500 Meloidogyne spp larvae. Attack intensity was analyzed using ANOVA and 5% BNT test. The results showed that administering shallot skin powder significantly reduced the intensity of attacks; a dose of 30 g produced the lowest attack rate of 3.30% while the control reached 63.30%. The flavonoid, saponin and alkaloid compounds in shallot skin are thought to act as nematicides. Onion skin powder has been proven to be effective and environmentally friendly as an alternative control for Meloidogyne spp. in celery cultivation.

Shelf life of Alang-alang (Imperata cylindrica) Plant Herbicide in Suppressing The Growth Of Babadotan Weeds

2026-05-25T13:27:09+08:00

The problem faced when using plant-based pesticides is that they are impractical, because plant-based pesticides must be made every time they are applied, so it takes more time. So far, vegetable herbicides have been made 1-3 days before application. It is not yet known exactly how long the shelf life of botanical herbicides is to suppress weeds. One of the vegetable herbicides that can be used is made from reed roots which can release allelopathic compounds. The ingredients found in the rhizomes of reeds (Imperata cylindrica) are known to contain allelopathic compounds in the form of saponins, tannins, arundoin, phenol, isoarborinol, cylindrin, simiarenol, campestrol, stigmasterol, β sitisterol, scopoletin, phydroxybenzalaldehyde, catechol, chlorogenic acid, oxalic acid, d-malic acid, citric acid, potassium, large amounts of calcium and 5-hydroxytryptamine. The aim of this research was to determine the effectiveness of the shelf life of the botanical herbicide Alang-alang roots on the growth of the weed A. conyzides. The design used in this research was a Completely Randomized Design (CRD) with 6 treatments and 4 replications and observations were carried out for 30 days. Making a botanical herbicide in the form of alang-alang root solution. The dose used is 150 ml. Data on the phytotoxicity of plant-based herbicides of Alang-alang roots were analyzed using analysis of variance with the F test and BNT further test at 5% level. The results of this study indicate that the shelf life of botanical herbicides affects the phytotoxicity of the weed A. conyzoides. All long storage treatments were considered to have an effective effect in suppressing bandotan weed (Ageratum conyzoides).

Inhibitory Power of Protaderma against Fusarium sp. Causes of Wilt Disease in Tomatoes

2026-05-25T13:59:53+08:00

Fusarium wilt disease in tomato plants (Solanum lycopersicum) is one of the main obstacles causing a decrease in tomato production. Control of this disease generally still relies on the use of chemical fungicides which in the long term can have a negative impact on the environment. Environmentally friendly control efforts need to be developed by biological agents. One product that has the potential to be used is Protaderma, a biofungicide based on Trichoderma sp. which functions to suppress the growth of pathogens and increase plant resistance. This research aims to determine the effectiveness of Protaderma in inhibiting the growth of Fusarium sp., determine the most effective dose, and see its effect on the growth of tomato plant height. Testing was carried out in vitro using the dual culture method and field testing using a Completely Randomized Design (CRD) with 6 treatments and 3 replications. This treatment included control (without Protaderma) and application of Protaderma with five different doses, namely 5 g, 10 g, 15 g, 20 g and 25 g per plant. The results show that Protaderma is able to inhibit the growth of Fusarium sp. amounted to 60.8%, reduced the incidence of disease from 55.6% to 0% at doses of 20 g and 25 g, and increased plant height to an average of 59.78 cm at a dose of 25 g.

Test the Effectiveness of Application of Basil Leaf Powder (Ocimum basilicum L.) to Control Nematodes Meloidogyne Spp. On Celery Plants (Apium graveolens)

2026-05-25T14:39:36+08:00

Celery plants (Apium graveolens L.) are horticultural commodities with high economic value. In recent years, one of the main problems in celery cultivation in the Landasan Ulin area, Banjarbaru City, is root knot disease caused by the nematode Meloidogyne spp. Infection with this pathogen causes typical symptoms in the form of chlorosis or yellowing of leaves, stunted growth, stunted plants, wilting, and the formation of knots or swelling on the roots. The use of plant-based pesticides is an important alternative to reduce dependence on chemical pesticides. Basil oil is known to have larvicidal activity through a contact poison mechanism on the surface of the larva's body, thanks to its content of the phenolic compound eugenol which is easily absorbed through the cuticle. This study aims to evaluate the effectiveness of the application of basil leaf powder (Ocimum basilicum L.) in suppressing the nematode population Meloidogyne spp. on celery plants. The experimental design used a Completely Randomized Design (CRD) with five treatments and four replications, so that 20 experimental units were obtained, each consisting of three plants. The results showed that the control treatment (K) had an attack rate of 43.34% and was very significantly different compared to other treatments. Administration of 90 g of basil leaf powder was able to reduce the intensity of nematode attacks by up to 5.00%, making it the most effective treatment in controlling Meloidogyne spp.

Effectiveness of Noni Leaf Powder (Morinda citrifolia L.) in Controlling Root Knot Nematode Attacks (Meloidogyne spp.) on Celery Plants

2026-05-25T15:43:36+08:00

Celery is a vegetable with export value which is widely cultivated in the low to highlands but its production is often reduced due to attacks by root knot nematodes (Meloidogyne spp.). Control of these pests generally still relies on chemical pesticides which have the potential to pollute the environment, so environmentally friendly alternatives such as vegetable pesticides are needed. This research aims to examine the effectiveness of noni leaf powder (Morinda citrifolia L.) in suppressing nematode attacks on celery. The design used was a completely randomized design with five treatments and four replications, including noni powder doses of 15, 25, 35 and 45 g. The main parameter is the intensity of the nematode attack. The results showed that noni powder was able to reduce the percentage of attacks from 45% in controls to 16.67%, 10.83%, 6.67% and 4.17% as the dose increased.

Effectiveness of the Vegetable Pesticide Saliara (Lantana camara L.) Against Aphids (Aphis gossypii Glover) on Tomato Plants (Solanum lycopersicum L.)

2026-05-25T15:55:42+08:00

Tomatoes are an important horticultural commodity whose production is often disrupted by attacks by plant pests (OPT), especially the aphid Aphis gossypii. This pest damages plants by sucking cell fluids, causing wrinkling of leaves, chlorosis and stunted growth. Prolonged use of synthetic pesticides has the potential to cause problems such as pest resistance and accumulation of chemical residues. This research was conducted to determine the effectiveness of saliara leaf solution (Lantana camara L.) as an alternative to vegetable pesticides. Saliara leaves contain bioactive compounds of alkaloids, flavonoids, tannins, saponins and essential oils which are toxic to insects. The experiment used a completely randomized design (CRD) with one factor with four solution concentrations (35%, 45%, 50% and 75%) and one control and each with four replications. Parameters observed include pest mortality and attack intensity. The results showed that all solution concentrations were able to increase aphid mortality compared to the control. A 35% concentration produces the highest mortality, namely 100%, followed by a 75% concentration of 97.5% with a mechanism of action through contact and residue. The 75% and 50% treatments were also the most effective in suppressing attack intensity which remained below 1.5% until the third day, while the control increased to 8.68%.