scholarly journals The Aplications Biological Control of the Pest Population ( Plutella xylostella Linn. And C. pavonana Zell.) and Their Natural Enemies in Cabbage Plants in the Village Kalibaru Kulon, District Banyuwangi

2016 ◽  
Vol 16 (2) ◽  
pp. 55
Author(s):  
Helmi Helmi ◽  
Didik Sulistyanto ◽  
Purwatiningsih Purwatiningsih
Keyword(s):  
Biological Control ◽  
Bacillus Thuringiensis ◽  
Natural Enemies ◽  
Plutella Xylostella ◽  
Agricultural Land ◽  
Block Design ◽  
Pest Population ◽  
Percentage Decrease ◽  
Randomized Complete Block Design ◽  
The Village

The aim of the research was to determine the effectiveness of biological control agens  to the population of pests  and their natural enemies in cabbage crops in agricultural land Kalibaru kulon Kab. Banyuwangi. The research was conducted by Randomized Complete Block Design with with five replications. The treatments were Control as P0, Heterorhabditis sp. as P1, Bacillus thuringiensis as P2, Profenofos as P3, Beauveria bassiana as P4, Red bacteria as P5. Data were obtained from observations of pest population and their natural enemies, as well as the percentage decrease in the population of pests and their natural enemies. Data were analyzed using ANOVA and LSD were tested further by 5%. The results showed that Heterorhabditis sp. was the most effective agents to control populations of Plutella xylostela Linn. and Crocidolomia pavonana Zell., this is also indicated by a decrease in pest population of Plutella xylostela by 54.66% and amounted to 47.9% Crocidolomia  pavonana. Aplication biological agens  was not  affect  the population of natural enemies Coccinela repanda, and Verania sp. Keywords : Cabbage, Biological Control, Pests, Natural enemies

scholarly journals Pest Control Technology for Plutella Xylostella L. on Green Mustard (Brassica Juncea L.) Using Bacillus Thuringiensis in Tukungan Soil

2021 ◽  
Vol 7 (2) ◽  
pp. 52-60
Author(s):  
Akhmad Rizali ◽  
Riza Adrianoor Saputra ◽  
Muhammad Alfian
Keyword(s):  
Bacillus Thuringiensis ◽  
Brassica Juncea ◽  
Plutella Xylostella ◽  
Agricultural Land ◽  
Block Design ◽  
Growth And Yield ◽  
Traditional Markets ◽  
The People ◽  
Randomized Block Design ◽  
Management Technology

Green mustard (Brassica juncea L.) is a popular vegetable among the people. Green mustard leaves are commonly used as complementary ingredients such as chicken noodle, meatballs, etc. These vegetables are easily accessible to traditional markets, supermarket, and mall. The main obstacle in cultivating green mustard is Plutella xylostella attack. P. xylostella pests can attack both vegetative and generative, striking at the shoots and leaves of plants from breeding to harvesting. One of the effective and safe controls is the bioinsecticide Bacillus thuringiensis. Tukungan soil is a swamp land management technology that aims to diversify commodities that can be planted. This technology is very helpful in utilizing and maximizing existing agricultural land, especially in South Kalimantan. The bioinsecticide material used is a strain of B. thuringiensis which is the Turex WP. This research aims to determine the best dose of bioinsecticide B. thuringiensis (Turex WP) in controlling P. xylostella pests, increasing growth and yield of green mustard in tukungan soils. The research used a one-factor randomized block design, namely the dose of bioinsecticide (Turex WP) consisting of five treatments: p0 = 0 g/L, p1 = 0.5 g/L, p2 = 1 g/L, p3 = 1.5 g/L, and p4 = 2g/L. The results showed that the bioinsecticide B. thuringiensis (Turex WP) with a dose of 2 g/L was effective in controlling P. xylostella pests, increasing growth and yield of green mustard in tukungan soils.

scholarly journals BIOLOGICAL CONTROL OF WHITEFLY BY SPECIES OF LADYBUG Delphastus spp.

2020 ◽  
Vol 5 (7) ◽  
Author(s):  
Greissi Tente Giraldi ◽  
Julio César Guerreiro ◽  
Cawana Parrow Augusto ◽  
Thainara Ferreira Alves Pessoa ◽  
Luiz Gustavo Dos Santos ◽  
...  
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Crop Productivity ◽  
Insect Population ◽  
Staple Food ◽  
Active Ingredients ◽  
Pest Population ◽  
Critical Damage

Whitefly complex is one of the most severe pests affecting different crops of significant agricultural interest. It causes critical damage to plants, and hence considerably affect crop productivity and the related commercials. This insect has been managed using insecticides; however, there have been reports of resistance of this insecticide to various active ingredients, making it difficult to reduce this pest’s population. Hence, other ways of handling this insect population have been investigated, including through biological control. Several past studies have reported the existence of natural enemies of the whitefly, including coccinellids such as those belonging to the genus Delphastus have gained much attention. These coccinellids are predators and hence perform the important role of controlling pest population. Moreover, the whitefly is a staple food in certain diets.

Friendly Foes: The Bio-control Agents

2018 ◽  
Vol 2 (01) ◽  
Author(s):  
Kalpana Singh
Keyword(s):  
United States ◽  
Biological Control ◽  
Bacillus Thuringiensis ◽  
United States Of America ◽  
Control Agent ◽  
Mosquito Larvae ◽  
Bt Cotton ◽  
Economic Threshold ◽  
Pest Population ◽  
Natural Way

The bio-control agents are those organisms that manage the pest population in natural way and keep them below the economic threshold and are thus applied by the agency of man. This process is known as bio-control or biological control. They are foes to the pests and are thus beneficial and a friend for us. There are many pathogens (Bacillus thuringiensis, Bt cotton), parasites (parasitoids, ex. Parasitic wasps, tachinid flies) and predators (ex. Gambusia fish against mosquito larvae) that can be applied as bio-control agents. Many are being used as effective pest control agent in Europe and United States of America. There is lots of potential in this field and more explorations and researches need to be done in an agricultural country like India.

scholarly journals Biological Control of Sclerotinia Stem Rot of Soybean with Sporidesmium sclerotivorum

Plant Disease ◽  
2002 ◽  
Vol 86 (9) ◽  
pp. 999-1004 ◽  
Author(s):  
L. E. del Rio ◽  
C. A. Martinson ◽  
X. B. Yang
Keyword(s):  
Biological Control ◽  
Block Design ◽  
Field Studies ◽  
Control Agent ◽  
Stem Rot ◽  
Sclerotinia Stem Rot ◽  
Field Crops ◽  
Randomized Complete Block Design ◽  
Experimental Plots ◽  
Commercial Field

Field studies were conducted to evaluate the effectiveness of Sporidesmium sclerotivorum to control Sclerotinia stem rot of soybean (SSR) at Ames, Humboldt, and Kanawha, IA, between 1996 and 1998. Experimental plots (3 × 3 m) were infested with S. sclerotivorum macroconidia once at a rate of 0, 2, or 20 spores per cm2 in the fall of 1995 or the spring of 1996, under two crop rotation schemes. A randomized complete block design with four replications in each location was used. Plots infested with 20 spores per cm2 had 62% less SSR (P = 0.05) than control plots at Humboldt in 1996. No differences were detected between fall and spring applications. In 1998, plots treated with either 2 or 20 spores per cm2 had 51 to 63% less SSR (P = 0.05) than control plots at Ames and Kanawha. In 1998, SSR was completely suppressed in all plots at Humboldt, while the commercial field surrounding the experimental plots had 17% SSR. S. sclerotivorum was retrieved from all infested plots at all locations 2 years after infestation with sclerotia of Sclerotinia sclerotiorum as bait. At Humboldt, S. sclerotivorum was also retrieved from control plots. Two larger plots (10 × 10 m) were infested with 20 or 100 spores per cm2 in the fall of 1996 or spring of 1997 in six commercial fields. SSR incidence, which was measured in transects up to 20 m from the infested area at 5-m intervals, was reduced 56 to 100% (P = 0.05) in four fields compared with the surrounding uninfested areas in the commercial fields. Dispersal of the control agent was evident by the fact that SSR incidence gradually increased from the edge of the infested macroplots up to about 10 m into noninoculated areas of the commercial field. This paper constitutes the first report describing the biocontrol of a disease on field crops that may be employed economically.

scholarly journals Manipulasi Mikrohabitat Dengan Sistem Tanam Polikultur Sebagai Stabilizer Ekosistem Untuk Pengelolaan Hama dan Musuh Alami Pada Tanaman Bawang Merah (Allium ascalonicum Linn.)

2019 ◽  
Vol 2 (2) ◽  
pp. 62
Author(s):  
Rizal Sukarno ◽  
Sigit Prastowo
Keyword(s):  
Natural Enemies ◽  
Block Design ◽  
Limiting Factor ◽  
Pest Population ◽  
Control Techniques ◽  
Randomized Block Design ◽  
Pest Insects ◽  
Different Types ◽  
Planting System ◽  
Better Than

Shallot (Allium ascalonicum Linn.) constitutes one of the commodities that has important meaning for Indonesian people with the limiting factor in the production is the pest attack. One of these pest control techniques is by controlling technical culture of polyculture planting system. This research was conducted in July to October 2019 which was located in Banyuputih Village, Wringin District, Bondowoso Regency. This study used a Randomized Block Design (RBD) with six treatment, namely: P1 = polyculture of shallot + Lemongrass; P2 = polyculture of shallot + celery; P3 = Polyculture of shallot + mustard; P4 = Polyculture of shallot + Lemongrass + mustard; P5 = Polyculture of shallot + celery + mustard; P6 = Monoculture of shallot. Each treatment was repeated 4 times. Observation started at 30 days after planting. Data collection was done by observing directly on the sample plants. Sampling was carried out using Yellow trap and pit fall trap. Samples were taken at each plot 10 times with intervals of 4 days. Observations included collecting the pest insects and natural enemies that were found, counting the number of populations in each species, scoring towards the damage plants. The results showed that shallot planting by polyculture with different types of plants affected the population of pests and natural enemies as well as the level of diversity of insects in shallots. Planting shallots by polyculture has been proven to control pest populations compared to planting shallots by monoculture. Polyculture planting with two types of plants proved to be better than polyculture planting with three types of plants where the best treatment was found in P1, namely polyculture of shallot and lemongrass with the smallest pest population which was 17.5.

scholarly journals Manipulation of microhabitat by polyculture planting system as ecosystem stabilizer for management of pests and natural enemies in shallot (Allium ascalonicum Linn.)

2020 ◽  
Vol 1 (1) ◽  
pp. 33
Author(s):  
Sigit Prastowo ◽  
Rizal Sukarno
Keyword(s):  
Data Collection ◽  
Natural Enemies ◽  
Block Design ◽  
Pest Population ◽  
Randomized Block Design ◽  
Pest Insects ◽  
Different Types ◽  
Planting System

Shallot (Allium ascalonicum Linn.) is one of important commodities for Indonesian people, yet its production is still limited by pest attack This research was conducted in Banyuputih Village, Wringin Subdistrict, Bondowoso Regency from July to October 2019. This study applied a Randomized Block Design (RBD) with six treatments, namely: P1 = Polyculture of shallot + lemongrass; P2 = Polyculture of shallot + celery; P3 = Polyculture of shallot + mustard; P4 = Polyculture of shallot + lemongrass + mustard; P5 = Polyculture of shallot + celery + mustard; P6 = Monoculture of shallot. Each treatment was repeated 4 times. Observation was started when plant was at the age of 30 days after planting. Data collection was done by directly observing the sample plants. Sampling was carried out using Yellow trap and pit fall trap. A total of 10 samples were collected from each plot with interval of 4 days. Observation included collecting the pest insects and natural enemies that were found, counting the number of populations of each species, and scoring towards the damage plants. The results showed that shallot planting by polyculture with different types of plants affected the population of pests and natural enemies as well as the level of diversity of insects in shallots. Planting shallots by polyculture has been proven to control pest population compared to planting shallots by monoculture. Polyculture planting with two types of plants was found to produce better outcome than polyculture planting with three types of plants with best treatment observed in P1, namely polyculture of shallot and lemongrass which resulted in the lowest pest population of 17.5.

scholarly journals The pest kill rate of thirteen natural enemies as aggregate evaluation criterion of their biological control potential of Tuta absoluta

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Joop C. van Lenteren ◽  
Alberto Lanzoni ◽  
Lia Hemerik ◽  
Vanda H. P. Bueno ◽  
Johanna G. Bajonero Cuervo ◽  
...  
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Natural Enemy ◽  
Tuta Absoluta ◽  
Evaluation Criterion ◽  
Pest Population ◽  
Biological Pest Control ◽  
Daunting Task ◽  
Kill Rate ◽  
Reduction Capacity

AbstractEcologists study how populations are regulated, while scientists studying biological pest control apply population regulation processes to reduce numbers of harmful organisms: an organism (a natural enemy) is used to reduce the population density of another organism (a pest). Finding an effective biological control agent among the tens to hundreds of natural enemies of a pest is a daunting task. Evaluation criteria help in a first selection to remove clearly ineffective or risky species from the list of candidates. Next, we propose to use an aggregate evaluation criterion, the pest kill rate, to compare the pest population reduction capacity of species not eliminated during the first selection. The pest kill rate is the average daily lifetime killing of the pest by the natural enemy under consideration. Pest kill rates of six species of predators and seven species of parasitoids of Tuta absoluta were calculated and compared. Several natural enemies had pest kill rates that were too low to be able to theoretically reduce the pest population below crop damaging densities. Other species showed a high pest reduction capacity and their potential for practical application can now be tested under commercial crop production conditions.

scholarly journals UJI DAYA BUNUH EKSTRAK BIJI SIRSAK (Annona muricata) TERHADAP LARVA KUBIS Plutella xylostella (Linn.) (LEPIDOPTERA: PLUTELLIDAE)

2017 ◽  
Vol 16 (2) ◽  
pp. 98
Author(s):  
Eva Lienneke Baideng
Keyword(s):  
Plutella Xylostella ◽  
Larval Mortality ◽  
Pupal Stage ◽  
Seed Extract ◽  
Annona Muricata ◽  
Pest Population ◽  
Total Percentage ◽  
Control Research ◽  
Insect Populations ◽  
The Village

UJI DAYA BUNUH EKSTRAK BIJI SIRSAK (Annona muricata) TERHADAP  LARVA KUBIS  Plutella xylostella (Linn.) (LEPIDOPTERA: PLUTELLIDAE) ABSTRAK Penelitian terhadap uji daya bunuh ekstrak biji sirsak (Annona muricata) terhadap larva kubis Plutella xylostella dilakukan untuk mengetahui uji daya bunuh beberapa konsentrasi ekstrak biji sirsak terhadap larva Plutella xylostella. Manfaat penelitian adalah untuk memberikan informasi daya bunuh dari ekstrak biji sirsak terhadap larva P. xylostella sehingga dapat digunakan dalam pengendalian hama tersebut.  Penelitian dilaksanakan di desa Rurukan Kota Tomohon, yang berlangsung selama 3 bulan. Metode penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL), yang terdiri dari 6 perlakuan dan tiap perlakuan terdiri dari tiga ulangan.        Hasil penelitian menunjukkan bahwa persentase kematian larva meningkat seiring dengan meningkatnya konsentrasi ekstrak biji sirsak yang disemprotkan yaitu 10 g/l, 20 g/l, 30 g/l, 40 g/l dan 50 g/l. Beberapa larva yang belum mati pada stadia ini dan masih hidup hingga pada stadia pupa, persentase mortalitasnya tidak meningkat seiring dengan meningkatnya konsentrasi ekstrak biji sirsak yang diaplikasikan, yakni secara berurutan 30g/l (11,11%), 10g/l (13,33%), 50g/l (14,44%), 20g/l (16,67%) dan 40g/l(16,67%). Total persentase mortalitas larva dan pupa meningkat seiring dengan meningkatnya konsentrasi ekstrak biji sirsak yang disemprotkan. Konsentrasi ekstrak biji sirsak sebesar 50g/l sudah cukup baik digunakan sebagai insektisida botani dalam mengendalikan populasi hama P. xylostella, karena pada konsentrasi ini efektif mematikan sebesar 96,78% populasi serangga yang diuji. Kata kunci: biji sirsak, Plutella xylostella, kubis   TEST POWER KILL THE SEED EXTRACT SOURSOP (Annona muricata) ON CABBAGE LARVAE Plutella xylostella (Linn.) (LEPIDOPTERA: PLUTELLIDAE) ABSTRACT Research on the test of the power to kill the seed extract of soursop (Annona muricata) to larvae of the cabbage Plutella xylostella test is performed to determine the power to kill some seed extract concentration of soursop against Plutella xylostella larvae. Benefits of the research is to provide information on the killing power of soursop seed extract against P. xylostella larvae so that it can be used. In the pest control.  Research conducted at the village Rurukan Tomohon, which lasted for three months. The method used is Completely Random Design (CRD), which consists of 6 treatments and each treatment consisted of three replication.  The results showed that the percentage of larval mortality increases with increasing concentration of soursop seed extract that is sprayed is 10 g / l, 20 g / l, 30 g / l, 40 g / l and 50 g / l. Some larvae are not dead at this stage and still live up to the pupal stage, the percentage of mortality was not increased with increasing concentration of soursop seed extract is applied, ie sequentially 30g / l (11.11%), 10g / l (13.33 %), 50g / l (14.44%), 20g / l (16.67%) and 40g / l (16.67%). Total percentage mortality of larvae and pupae increased with increasing concentration of soursop seed extract is sprayed. Concentration of soursop seed extract of 50g / l is good enough to use as a botanical insecticide to control the pest population of P. xylostella, because at this concentration amounted to 96.78% effective lethal insect populations tested. Keywords: soursop seed, Plutella xylostella, cabbage.

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