Efficacy of Insecticides Against Thrips on Dendrobium, Hi, 1994

Abstract Tests were conducted from 14 Jul through 8 Sep 1994 on 8 year old orchid plants at a commercial dendrobium farm in Kailua-Kona. Plants were growing in 1.3 cm crushed basaltic rock under 30% polypropylene shade using standard cultural practices. Experimental plots measured 40 ft2 with 58 plants per plot arranged in a RCB with four blocks. Four weekly applications of insecticides were applied beginning 14 Jul and ending 4 Aug. A spreader-sticker (Ad-here, J. R. Simplot, Lanthrop, CA) was added to all foliar treatments, including the control, at a rate of 0.5 ml per liter solution. Insecticides were applied at 1,345 liters/ha using a backpack sprayer (Solo Inc., Newport News, VA) equipped with an 8004 Teejet nozzle (Spraying systems Co. Wheaton, IL) at 276 KPa. The control was sprayed with water. Treatment efficacy was evaluated by randomly harvesting 5 inflorescences weekly from each block. Blossoms were removed from the inflorescences, counted, and placed in Berlese funnels heated with a 60 watt incandescent light bulb. Thrips were collected in an 8:2:1:1 solution of ethanol, distilled H20, acetic acid and glycerin, and the number of nymphs and adults counted. Because the number of blossoms per inflorescences varied, thrips counts were adjusted to the number of thrips per blossom by dividing the total number of thrips recovered by the total number of blossoms. Data were transformed to log,0(x + 1) and analyzed by ANOVA.

Download Full-text

Insecticidal Trials Against Vanda Thrips on Orchids, Hawaii, 1994

Arthropod Management Tests ◽

10.1093/amt/21.1.381 ◽

1996 ◽

Vol 21 (1) ◽

pp. 381-381

Author(s):

T. Y. Hata ◽

A. H. Hara ◽

B.K.S. Hu

Keyword(s):

Acetic Acid ◽

Treatment Efficacy ◽

Analysis Data ◽

Polyethylene Film ◽

Light Bulb ◽

Incandescent Light ◽

Newport News ◽

The University ◽

Experimental Plots ◽

Basalt Rock

Abstract Insecticides were evaluated for efficacy from 8 Dec through 15 Dec 94 at the University of Hawaii Waiakea Experiment Station in Hilo, Hawaii. Plants (approximately 6.5 ft in height) growing in basalt rock under 6 mil. clear FVG 3HLFI polyethylene film covering were used in this study. Experimental plots were arranged in a RCB with 3 blocks, 30 plants per block. A spreader-sticker (Ad-here, J. R. Simplot, Lanthrop, CA) was added to all treatments, including the control, at a rate of 5 ft. oz. per 100 gals. The control was sprayed with water. Insecticides were applied once at approximately 200 gpa using a backpack sprayer (Solo, Newport News, VA) equipped with an 8004 Teejet nozzle at 40 psi. Treatment efficacy was evaluated by randomly harvesting 30 blossoms from each block. Thrips were extracted from the blossoms with Berlese funnels heated with a 60 watt incandescent light bulb and collected in an 8:2:1:1 solution of ethanol, distilled H2O, acetic acid and glycerin. The number of nymphs and adults was pooled for analysis. Data were transformed to log10(x + 1) and analyzed by ANOVA.

Download Full-text

“Impossible to stop just now. Why, if I could only prove one simple little lemma”

Propelled ◽

10.1093/oso/9780190912963.003.0007 ◽

2020 ◽

pp. 94-112

Author(s):

Andreas Elpidorou

Keyword(s):

Personal Meaning ◽

Light Bulb ◽

Incandescent Light ◽

Fermat's Last Theorem ◽

Fermat’S Last Theorem

By presenting real stories of frustrations, failures, and successes—Andrew Wiles’ proof of Fermat’s Last Theorem, Keith Jarrett’s unforgettable 1975 Köln performance, and Thomas Edison’s struggles with the incandescent light bulb, among others—the chapter further investigates the value and importance of frustration. Whereas Chapter 6 was concerned with articulating the motivational value of frustration, this chapter demonstrates the capacity of frustration to structure our lives and to endow them with significance and personal meaning. Specifically, the chapter describes how what we experience as frustrating, difficult, and effortful can often become valuable precisely because it is frustrating, difficult, and effortful to us. The chapter thus makes clear that the experience of frustration can lead to the generation of value and argues that a life devoid of frustrations runs the risk of becoming meaningless.

Download Full-text