scholarly journals NANOEMULATION OF MIXED Tephrosia vogelii AND Piper aduncum AS AN ALTERNATIVE CONTROL OF CABBAGE PEST Crocidolomia pavonana

2021 ◽  
Vol 819 (1) ◽  
pp. 012085
Author(s):  
Eka Candra Lina ◽  
Reflin ◽  
Lei Harismi Erlina ◽  
Duma Putri Tama
Keyword(s):  
Alternative Control ◽  
Tephrosia Vogelii ◽  
Piper Aduncum

scholarly journals Uji Kemampuan Ekstrak Daun Beberapa Jenis Sirih (Piper sp.) Untuk Mengendalikan Jamur Aspergillus sp. Pada Benih Kacang Tanah Secara In Vitro

2020 ◽  
Vol 16 (1) ◽  
pp. 30-38
Author(s):  
Nela Zahara ◽  
Muhammad Ali ◽  
Fifi Puspita
Keyword(s):  
Seed Treatment ◽  
Leaf Extract ◽  
Piper Betle ◽  
Alternative Control ◽  
Research Results ◽  
Betel Leaf ◽  
Efficient Alternative ◽  
Aspergillus Sp ◽  
Piper Aduncum

Vegetable fungicides are fungicides made from natural ingredients that are widely available in nature. One of the plants that can be used as a vegetable fungicide include several species of betel plants such as forest betel (Piper aduncum L.), red betel (Piper crocatum L.) and green betel (Piper betle L.). The use of several betel extracts can be used as an effective and efficient alternative control. This study aims to obtain the type of betel extract which has the potential as a vegetable fungicide that is able to control the fungus Aspergillus sp. The stages of this study consisted of the isolation of Aspergillus sp., Extraction and inhibition test of several betel extracts against the fungus Aspergillus sp., Seed treatment test with extracts of several types of betel. Based on research results giving green betel leaf extract, forest betel and red betel can inhibit the growth of the fungus Aspergillus sp. With the percentage of inhibition of 32.08%, 37.53% and 33.03% respectively. Giving betel leaf extract green, betel forest and red betel also can reduce the percentage of Aspergillus sp. amounted to 19.60%, 19.20% and 18.80% when compared to controls without administration of betel leaf extract. Application of several types of betel leaf extract and without betel leaf extract both produce a high percentage of normal sprouts (> 80%).

scholarly journals Sinergisme Ekstrak Piper aduncum dan Tephrosia vogelii terhadap Penggerek Batang Padi Kuning, Scirpophaga incertulas

Agrikultura ◽  
2015 ◽  
Vol 26 (1) ◽  
Author(s):  
Muhammad Sigit Susanto ◽  
Djoko Prijono
Keyword(s):  
Oryza Sativa ◽  
Stem Borer ◽  
Botanical Insecticides ◽  
Scirpophaga Incertulas ◽  
Leaf Extracts ◽  
Control Techniques ◽  
Yellow Stem Borer ◽  
Tephrosia Vogelii ◽  
Piper Aduncum ◽  
Concentration Ratios

AbstractSynergism of Piper aduncum and Tephrosia vogelii Extracts against the Rice Yellow Stem Borer, ScirpophagaincertulasRice (Oryza sativa) is one of the important staple food crops in the world. One of the important pests on riceis the rice yellow stem borer (RYSB) Scirpophaga incertulas . One of the alternative control techniques thatcan be applied is by using botanical insecticides. The purpose of this study was to determine the synergismbetween Piper aduncum fruit and Tephrosia vogelii leaf extracts against RYSB larvae. P. aduncum and T.vogelii extracts, either tested separately or in mixtures with concentration ratios of 1:1, 2:1, and 1:2, wereeffective against RYSB larvae. The treatments with these extracts caused death in YRSB larvae at 72 hoursafter treatment in which the affected larvae showed internal tissue damage symptom. The most toxic testmaterial to RYSB larvae was P. aduncum and T. vogelii extract mixture with a concentration ratio of 1:2.LC50 and LC95 of P. aduncum extract were 0.175% and 0.126%, respectively, while those of T. vogelii extractwere 1.620% and 2.075%, respectively. P. aduncum and T. vogelii extract mixture with 1:1 ratio had LC500.056% and LC95 0.143%, while that with 2:1 ratio had LC50 0.025% and LC95 0.149%. LC50 and LC95 of themixture with 1:2 ratio were 0.016% and 0.083%, respectively. P. aduncum and T. vogelii extract mixture atthe three concentration ratios were more effective than P. aduncum and T. vogelii extracts appliedseparately and synergistic to RYSB larvae.Keywords: Botanical Insecticide, Piper aduncum, Scirpophaga incertulas , Synergism, Tephrosia vogelii .AbstrakPadi (Oryza sativa) merupakan salah satu komoditas penting pangan dunia. Salah satu hama penting padatanaman padi adalah penggerek batang padi kuning, Scirpophaga incertulas . Salah satu cara pengendalianyang dapat diterapkan adalah dengan menggunakan insektisida nabati. Tujuan penelitian ini adalahmenentukan sinergisme ekstrak buah Piper aduncum dan daun Tephrosia vogelii terhadap larva S.incertulas . Perlakuan ekstrak P. aduncum dan T. vogelii baik secara terpisah maupun campuran pada nisbahkonsentrasi 1:1, 2:1, dan 1:2 efektif terhadap larva S. incertulas . Perlakuan ini dapat menimbulkan kematianpada S. incertulas dengan gejala kerusakan jaringan larva instar 1 pada 72 jam setelah perlakuan. Bahan ujiyang paling beracun terhadap larva S. incertulas adalah campuran ekstrak P. aduncum dan T. vogelii dengannisbah konsentrasi 1:2. LC50 dan LC95 ekstrak P. aduncum masing-masing 0,175% dan 0,126%. Sementara ituLC50 dan LC95 ekstrak T. vogelii masing-masing 1,620% dan 2,075%. Campuran ekstrak P. aduncum dan T.vogelii pada nisbah konsentrasi 1:1 memiliki LC50 0,056% dan LC95 0,143%. Sementara itu campuran ekstraktersebut pada nisbah konsentrasi 2:1 memiliki LC50 0,025% dan LC95 0,149%. LC50 dan LC95 campuranekstrak tersebut pada nisbah konsentrasi 1:2 masing-masing 0,016% dan 0,083%. Campuran ekstrak P.aduncum dan T. vogelii pada ketiga nisbah konsentrasi lebih efektif dibandingkan dengan ekstraktunggalnya dan bersifat sinergis terhadap larva S. incertulas .Kata kunci: Insektisida Nabati, Piper aduncum, Tephrosia vogelii , Scirpophaga incertulas , Sinergisme.

Modelling of Nitrification at the Mogden Treatment Works

1989 ◽  
Vol 21 (4-5) ◽  
pp. 305-314
Author(s):  
J. P. Lumbers ◽  
S. C. Cook ◽  
G. A. Thomas
Keyword(s):  
Sensitivity Analysis ◽  
Monte Carlo Simulation ◽  
River Basin Management ◽  
Independent Data ◽  
Activated Sludge Process ◽  
Basin Management ◽  
Alternative Control ◽  
Control Actions ◽  
Parameter Values ◽  
Generalised Sensitivity Analysis

An application of a dynamic model of the activated sludge process is described within the context of real-time river basin management. The model has been calibrated and validated on independent data and then applied to investigate losses of nitrification at the Mogden Works. Monte Carlo simulation and generalised sensitivity analysis were found to be effective ways of identifying appropriate parameter values and their importance. The prediction of unmeasured states such as the autotroph population enabled the effects of alternative control actions to be better understood and the most suitable measures found.

An Alternative Control Approach to Achieve Fast Load Transient Responses in DC-DC Converters

2020 ◽  
pp. 1-1
Author(s):  
Amir Borzooy ◽  
S. Ali Khajehoddin ◽  
Masoud Karimi Ghartemani ◽  
Mohammad Ebrahimi
Keyword(s):  
Transient Responses ◽  
Alternative Control ◽  
Control Approach

scholarly journals A Review of Alternative Management Tactics Employed for the Control of Various Cockroach Species (Order: Blattodea) in the USA

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 550
Author(s):  
Ameya D. Gondhalekar ◽  
Arthur G. Appel ◽  
Gretchen M. Thomas ◽  
Alvaro Romero
Keyword(s):  
Applied Research ◽  
Research Effort ◽  
Effective Control ◽  
Control Methods ◽  
Alternative Tactics ◽  
Alternative Control ◽  
The Public ◽  
Concurrent Use ◽  
The Usa ◽  
Alternative Control Methods

Effective control of domestic and peridomestic cockroaches requires integrated approaches that emphasize concurrent use of chemicals with alternative control tactics. An integrated pest management (IPM) approach is particularly justified in environments where satisfactory cockroach control cannot be achieved due to multiple factors including development of insecticide aversion and resistance in some cockroach species, and poor sanitation or structural issues that foster infestations. While a flurry of research effort has been devoted to study alternative tactics for cockroach control, only a few of them have been evaluated in the context of IPM programs. This review focuses on examining studies on alternative tactics that are proven efficacious, economical, and logistically feasible for their inclusion in IPM programs for important domestic and peridomestic cockroaches in the USA. Management programs that educate the public on cockroach biology, behavior, and the importance of sanitation; use of traps to monitor infestation levels; apply targeted low impact insecticides such as baits, have demonstrated a greater success for effective and sustainable control of cockroaches when compared to an insecticide-only approach. Incorporation of other alternative control methods to IPM programs will require more applied research that validates their use in real-world scenarios and demonstrates their cost-effectiveness.

Successful invasion of the neotropical species Piper aduncum in rain forests in Papua New Guinea

2002 ◽  
Vol 5 (2) ◽  
pp. 255-262 ◽  
Author(s):  
Jan Lepš ◽  
Vojtěch Novotný ◽  
Lukáš Čížek ◽  
Kenneth Molem ◽  
Brus Isua ◽  
...  
Keyword(s):  
Papua New Guinea ◽  
New Guinea ◽  
Rain Forests ◽  
Neotropical Species ◽  
Piper Aduncum

Total syntheses (+)-adunctins C and D: confirmation and assignment of relative/absolute configurations

2021 ◽  
Author(s):  
Jian Xiao ◽  
Jun Zhao ◽  
Yawen Wang ◽  
Gan Luo ◽  
Yu Peng
Keyword(s):  
Total Syntheses ◽  
Piper Aduncum

The first total syntheses of (+)-adunctin C (ent-1) and (+)-adunctin D (2), two monoterpene-substitued dihydrochalcones isolated from Piper aduncum (Piperaceae), was achieved. A regioselective oxidative [3+2] cycloaddition of acylphloroglucinol with...

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