Determination of multiple-species economic injury levels for rice insect pests

2012 ◽  
Vol 32 ◽  
pp. 150-160 ◽  
Author(s):  
K. Selvaraj ◽  
Subhash Chander ◽  
M. Sujithra
Keyword(s):  
Insect Pests ◽  
Economic Injury ◽  
Multiple Species ◽  
Rice Insect Pests

scholarly journals Advances in LC–MS/MS Methods for Allergen Testing, Meat Speciation, and Gelatin Speciation

2019 ◽  
Vol 102 (5) ◽  
pp. 1309-1315
Author(s):  
Jianru Stahl-Zeng ◽  
Ashley Sage ◽  
Philip Taylor ◽  
Jeremy Dietrich Netto ◽  
Tuo Zhang
Keyword(s):  
Mass Spectrometer ◽  
Multiple Reaction Monitoring ◽  
Proteome Analysis ◽  
Food Product ◽  
Transition Analysis ◽  
Tandem Quadrupole Mass Spectrometer ◽  
Signature Peptides ◽  
Unique Markers ◽  
Multiple Species

Abstract Background: Food authenticity is demanded by the consumer at all times. The consumer places trust in the manufacturer that the food product is genuine in terms of what is recorded on the packaging label. Objective: Recent advancements in LC–tandem MS methodology in the detection of allergens, meat, and gelatin speciation in raw food products and processed foods are detailed in this paper. Method: For each of the three methods, initial proteome analysis and the screening leading to the determination of unique tryptic peptides were conducted using a high-resolution, accurate tandem mass spectrometer. Having identified the unique markers, the method was transferred to a tandem quadrupole mass spectrometer for a higher-sensitivity quantitative study, multiple reaction monitoring transition analysis. Results: For the allergens method a detection limit of at least 10 ppm was attained across the 12 allergen peptides in this workflow. In the gluten workflow the resulting chromatograms show good detection down to 5 ppm, with no interference from the food matrices. The meat speciation method details that signature peptides could be readily identified at 1% w/w with no matrix interference. Conclusions: These single-injection workflows with cycle-time optimization enable wide coverage of analytes to identify multiple species within challenging matrix samples.

scholarly journals Effects of silicon amendment on the occurrence of rice insect pests and diseases in a field test

2018 ◽  
Vol 17 (10) ◽  
pp. 2172-2181 ◽  
Author(s):  
Yong-qiang HAN ◽  
Ji-hui WEN ◽  
Zhao-pu PENG ◽  
De-yong ZHANG ◽  
Mao-lin HOU
Keyword(s):  
Field Test ◽  
Insect Pests ◽  
Pests And Diseases ◽  
Rice Insect Pests

Evaluation of action thresholds for chronic rice insect pests in the Philippines. III. Leaffolders

2006 ◽  
Vol 52 (3) ◽  
pp. 181-194 ◽  
Author(s):  
J. A. Litsinger ◽  
J. P. Bandong ◽  
B. L. Canapi ◽  
C. G. Dela Cruz ◽  
P. C. Pantua ◽  
...  
Keyword(s):  
Insect Pests ◽  
The Philippines ◽  
Action Thresholds ◽  
Rice Insect Pests

scholarly journals The Bearing of Physiology on Economic Entomology

1912 ◽  
Vol 3 (4) ◽  
pp. 343-354 ◽  
Author(s):  
J. dewitz
Keyword(s):  
Growth And Development ◽  
Insect Pests ◽  
Animal Origin ◽  
Cultivated Plants ◽  
Physiological Research

The progress of applied Entomology is mainly visible in the discovery of practical means for the destruction of insects injurious to cultivated plants, and in the minute determination of the various stages of the growth and development of such insects. More recently the parasites of insect pests, both of vegetable and animal origin, have also largely attracted attention. But physiological research, so far as injurious insects are concerned, has almost entirely been overlooked and neglected; although this line of enquiry affords obvious opportunities for arriving at tbe very essence of the whole matter, and should indeed be made one of the main starting points in the study of insect pests.

Biology, status and management of rice insect pests in Nigeria

1992 ◽  
Vol 11 (5) ◽  
pp. 408-413 ◽  
Author(s):  
E.D.N. Umeh ◽  
R.C. Joshi ◽  
M.N. Ukwungwu
Keyword(s):  
Insect Pests ◽  
Rice Insect Pests

scholarly journals Farmer’s Knowledge and Perceptions on Rice Insect Pests and Their Management in Uganda

Agriculture ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 38 ◽  
Author(s):  
Simon Alibu ◽  
Michael Otim ◽  
Stella Okello ◽  
Jimmy Lamo ◽  
Moses Ekobu ◽  
...  
Keyword(s):  
Insect Pests ◽  
Rice Insect Pests

scholarly journals Control of Insect Pests in The First Alfalfa Crop, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 193-193
Author(s):  
R. Berberet ◽  
A. Zarrabi ◽  
A. Bisges
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Insect Pests ◽  
Dry Weight ◽  
Chemical Insecticide ◽  
Experiment Station ◽  
Second Year

Abstract Seven chemical insecticide treatments were evaluated for control of AW larvae and aphids in the first crop of a second year stand of ‘Cimarron VR’ alfalfa on the Agronomy Experiment Station, Stillwater, OK. Pretreatment samples indicated a population of 3.1 AW larvae and 20.5 aphids per stem. Insecticides were applied on 1 Apr using flooding nozzles (Spraying Systems Co., TK SS-5) calibrated to deliver 20 gpa at 24 psi when traveling 3 mph. A RCB design was used with 5 X 10 m plots replicated 4 times. Sampling was conducted at 3, 6, 13, and 18 DAT by pulling 25 stems per plot and placing them in standard Berlese funnels to extract insects for counting. Subsamples of aphids were identified on each date to determine the proportions of species present. Dry matter yields were estimated from samples of forage taken from a 1 X 5 m area in each plot. Subsamples were dried for determination of moisture content and yields were calculated on a dry weight/acre basis.

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