Jurnal Proteksi Tanaman (Journal of Plant Protection)
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KETEPATAN WAKTU APLIKASI Paecilomyces lilacinus DALAM MENGENDALIKAN NEMATODA BENGKAK AKAR (Meloidogyne spp.) PADA TANAMAN TOMAT: Time Suitability of Application of Paecilomyces lilacinus in Controlling Root-knot Nematodes (Meloidogyne spp.) on Tomato
Full text linkRoot-knot nematodes (Meloidogyne spp.) have been reported to be one of the primary pathogens that decreased tomato production in Indonesia. Biological control of root-knot nematodes by using parasitic fungus as like as Paecilomyces lilacinus is still limited. An effective application of parasitic fungi could be successful by managing a suitability application time. The study aimed to determine the suitability of the application time of the P.lilacinus in controlling root-knot nematodes on tomato. The study was conducted in farmers' land that was infected by root-knot nematodes. The experiment was done in a randomized block design with applying P.lilacinus isolates on 12, 8, and 4 days before planting, planting time, and 4, 8, 12 days after planting. All treatments were repeated four times. The application of P. lilacinus onto tomato root at planting time was better at suppressing the development of root-knot nematode compared to applications made before or after planting. P. lilacinus was able to suppress the number of root-knot (66.08%), the number of egg groups (77.33%), the number of eggs (26.79%), and the number of nematodes in the soil (82.20%).
Keywords: Application time, Meloidogyne spp., Paecilomyces lilacinus, tomat
Bahasa Indonesia: english
No full textThe Good Agriculture Practices (GAP) has been practiced in many countries, including Thailand. This study aimed to examine the GAP system's effect on pest arthropods' diversity and their natural enemies in the early generative period of rice cultivation in Phattalung Province, Thailand. The research was conducted in the rice fields of Pradoo Reang Village, Phattalung Province, Southern Thailand. Sampling was carried out using the selected method with a diagonal separation direction and repeated three times. Diversity, evenness, and dominance of pests and natural enemies were determined using the Shannon Wiener index, Evenness index, and Simpson index. The results showed that the pest population found in lowland rice fields planted with the GAP cultivation system was lower than conventional, but with a higher natural enemy population. Pest arthropods in the GAP cultivation system had a higher diversity index compared to conventional, with moderate pest evenness and similarity indexes. Arthropods that act as natural enemies in the GAP cultivation system had a moderate diversity index, with a higher evenness index than conventional, and a moderate similarity index. The two highest of herbivores were Nephotettix virescens and Leptocorisa oratorius, and the two highest of natural enemies were Verania discolor and Agriocnemis sp.Keywords: Agroecosystem, Arthropods, organic, sustainable agricultur
Pengaruh Auksin terhadap Ulat Grayak (Spodoptera litura Fabricius) serta Pertumbuhan dan Hasil Kentang Kultivar Granola: english
Full text linkThis research was purposed to determine the best auxin concentration against cluster caterpillar attack (Spodoptera litura Fabricius.), growth, and yield of potato (Solanum tuberosum Linnaeus). The research was conducted in Cikeris Cikandang, Cikajang, Garut, with altitude 1.298 meters above sea level in January until April 2018. The method used in this research was experimental method, Randomized Block Design (RBD) with 5 treatments of auxin (A = 0 ml/l, B = 1 ml/l, C = 2 ml/l, D = 3 ml/l and E = 4 ml/l) and 5 replications. The results of this research showed that the application of auxin did not affect the existence and attack of cluster caterpillar, but it affected the growth and yield of potato. The auxin concentration of 2 ml/l became the best concentration to plant height, tuber number, and tuber weight
Jenis dan Tingkat Serangan Hama Utama Tanaman Ubi Kayu (Manihot esculenta Crantz) di Kabupaten Lima Puluh Kota: english
Full text linkPests are one of constrains in cassava production. The research was done in cassava plantation in Lima Puluh Kota with the objectives were to determine the species of major pests of cassava and their damages. A survey was conducted in five subdistricts, Akabiluru, Guguak, Harau, Lareh Sago Halaban and Situjuah Limo Nagari. Twenty sampled plants were taken in 400 m2 plot laying in the middle of 0,5 hectar cassava plantation, 4-5 months. Four species of pests were found to attack cassava plants in Lima Puluh i.e: Paracoccus marginatus, Pseudococcus jackbeardsleyi, and Ferrisia virgata, whitefly, Aleurodicus dispersus. The three mealybugs caused percentage of plant attacked 85.5 %, percentage of leaf plant attacked 8.61 %, pest population 52.29 individual per plant with damage intensity was high. Whitefly caused percentage of plant attacked 12%, percentage of leaf plants attacked 0.77%, pest population 1.51 individual per plant
Ketahanan Beberapa Varietas Padi Lokal Sumatera Barat terhadap Virus Penyebab Penyakit Tungro: english
Full text linkTungro disease is one of the obstacles to increasing national rice production. The use of resistant varieties is a component to control the virus that is environmentally friendly and easily accepted because it does not require additional costs. This study aimed to determine the resistance of nine rice varieties commonly planted by farmers against the tungro. The study was conducted in a greenhouse, and the source of the tungro virus inoculum was taken from the Lintau area of ??West Sumatra Province. The results showed that of the nine varieties tested, IR 42 was resistant to the tungro attack, seven others were classified as moderate, and one variety was classified as vulnerable. The moderate resistant varieties were Anak Daro, Cisokan, Cantik Manih, Saganggam Panuah, Junjuang, Kuriek Kusuik, and Caredek Merah. In contrast, the variety that classified as vulnerable was Batang Sungkai due to the symptoms of attack more clearly than on other varieties, the fastest of a period of symptoms appear (10.15 days), the highest disease incidence (80.62%) with a disease index of 7.65
Pengendalian Fusarium fujikuroi Penyebab Penyakit Bakanae pada Padi dengan Filtrat Biakan Trichoderma harzianum: English
Full text linkTrichoderma harzianum culture filtrate is widely used to control plant pathogenic fungi because it contains secondary metabolites which act as antifungal. This study aimed to determine the ability of T. harzianum culture filtrate at various concentrations to suppress the growth of Fusarium fujikuroi cause of bakanae disease in rice. The study consisted of 2 stages: 1. in the laboratory and 2. in the screen house using a Completely Randomized Design (CRD) consisting of 6 treatments and 5 replications. The treatments were T. harzianum culture filtrate concentrations, namely A, 0%, B. 25%, C. 50%, D.75%, E. 100% and F. control (without filtrate and without F. fujikuroi). Parameters observed for stage I (in the laboratory) i.e. the percentage of seeds attacked by F. fujikuroi, colony thickness and colony area and parameters observed for stage 2 (in the screen house) i.e. the number of seedlings appearing, the seeds showing symptoms of bakanae, dead seeds, dead seedlings and stunting seeds. The results showed that the T. harzianum culture filtrate was able to suppress the growth of F.fujikuroi at both in the laboratory and in the screen house. The best filtrate concentration was 100% with the inhibition on the colony area of 77.38%, the number of seeds germinating of 55.78%, seeds showing bakanae of 80.06%, dead seeds of 60.09%, dead seedlings of 52.97%, and stunting seedlings of 60.09
Bahasa Indonesia: English
No full textPlant Growth Promoting Rhizobacteria (rhizobacteria)) is a soil bacterium that lives in the root region (rhizosphere), actively colonizes plant roots, can suppress pathogens, and increase plant growth. This study aims to obtain rhizobacterial isolates that have the potential to suppress cob rot disease in planta or in vitro and increase the growth of corn plants. This study used a randomized block design (RBD) for in planta with 15 rhizobacterial treatments, positive control (without F. verticillioides inoculation), and negative controls (F. verticillioides inoculation). Each procedure was repeated three times, and each replication consisted of 3 plants. In vitro testing using a Completely Randomized Design (CRD) with 15 rhizobacterial treatments and one control. Each repeated three times. Data were analyzed using variance analysis, if significantly different, continued with Duncan's New Multiple Range Test (DNMRT) at a 5% level. The results showed that LA2MKB 5.2 isolate was the isolate that had the best ability to suppress the development of F. verticillioides in planta with total effectiveness of 90.14%. LMTSA 5.4 isolate is the isolate that has the highest percentage of inhibition of dual culture in its ability as an antagonist of F. verticillioides in vitro, which is 7.20%
Efektivitas Ekstrak Beberapa Tumbuhan untuk Pengendalian Keong Mas (Pomacea canaliculata Lamarck) pada Tanaman Padi Sawah: english
Full text linkGolden snail is an important pest on rice plants in Indonesia. The study purposed to obtain the most effective plant extracts to suppress the golden snail population. The study was conducted at the greenhouse of Faculty of Agriculture, Universitas Andalas, Padang from November to December 2018, using a Completely Randomized Design (CRD) with six treatments and four replications. The treatment was leaf extracts from several plants with a concentration of 10 g/l, that were godβs crown or mahkota dewa (Phaleria macrocarpa), noni or mengkudu (Morinda citrifolia), breadfruit or sukun (Artocarpus altilis), ti plant or andong (Cordyline fruticosa), mangkokan (Nothopanax scutellarium), and control. The parameters observed were mortality of golden snails, percentage of clumps attacked, and intensity of golden snail attacks. The results showed that there were three leaf extracts could suppress golden snail population significantly, ie. Mangkokan, andong and mahkota dewa. The mangkokan leaf extracts was most effective in controlling golden snails which caused mortality of golden snails to reach 100% within 24 hours of exposure so that they did not attack the clumps as a whole
Aktivitas Insektisida Ekstrak Air Campuran Buah Piper aduncum dan Daun Tephrosia vogelii terhadap Crocidolomia pavonana Fabricius (Lepidoptera: Crambidae): english
Full text linkThe botanical insecticide is alternative pest control that is feasible to be developed. The inflorescences extract of Piper aduncum and leaf extract of Tephrosia vogelii are known to have insecticidal activity. The study aimed to determine the effect of a mixture of water extract of P. aduncum inflorescences and T. vogelii leaves on C. pavonana. This test used a completely randomized design (CRD) consisting of 6 treatments (0.0, 2.5, 3.0, 3.5, 4.0 and 5.0%) and 5 replications. Observation parameters were larval mortality, antifeedant effect, larval development time, pupal development time, normal and abnormal pupae, and sex ratio. The mixture of water extract of P. aduncum inflorescences and T. vogelii leaves (2:1) at LC50 (3.19%) was antagonistic and at LC95 (6.07%) was additive. The mixture influenced larval mortality (81.0%), had antifeedant effect (84.5%) and prolonged larval development time 1.71 days on 2nd-3rd instars and 2.4 days on 2nd-4th instars compared to control, but there were no effect on pupal development time, number of abnormal pupae and sex ratio
Aktivitas Air Rebusan Daun dari Beberapa Tumbuhan dalam Menekan Pertumbuhan Sclerotium rolfsii Sacc. Penyebab Busuk Batang pada Tanaman Kacang Tanah secara In Vitro: english
Full text linkThe leaves of some plants have been proved to suppress the development of plant diseases caused by pathogens. The study aimed to determine the water decoction of leaves to suppress the growth of S. rolfsii caused stem rot on peanuts in vitro. The study was conducted in the Laboratory of Phytopathology Departement of Plant Pest and Disease Faculty of Agriculture, Andalas University, from May-July 2015. The experimental design was a Randomized Complete Design (RCD) with seven treatments and six replications. The treatments were control, water decoction of Annona squamosa, Impatiens balsamina, Eclipta alba, Cymbopogon citratus and Tithonia diversifolia with concentration of 0,5% and fungicide with tebukonazol active ingredient at a concentration of 0,1%. Variables observed were macroscopic fungal culture, colony area, wet and dry weight of colonies. Data were analyzed by using ANOVA and DNMRT at a 5% of significance level.. The results showed that all water decoctions of plant leaves were able to suppress the growth of S. rolfsii. The most active of the water decoction was from T. diversifolia with suppression to colony area reached 77,32%, and wet and dry weight were 77,24% and 84,66%, respectively