| Tag |
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Second Indicator |
Subfields |
| LEADER |
00000cam a22000005a 4500 |
| 001 |
in00001260113 |
| 005 |
20220103134448.0 |
| 007 |
cr unu a |
| 008 |
951221s1993 xx b 000 0 eng d |
| 035 |
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|9 AGW0799AM
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| 035 |
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|a (OCoLC)33955619
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| 040 |
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|a TXA
|c TXA
|d UtOrBLW
|
| 049 |
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|a TXAM
|a TXAR
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| 099 |
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|a 1993
|a Thesis
|a K86
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| 100 |
1 |
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|a Kostroun, David Allan,
|d 1967-
|
| 245 |
1 |
0 |
|a Use of reduced rate mixtures of organophosphate and pyrethroid insecticides for resistance management of tobacco budworm, Heliothis virescens (F.), in cotton /
|c by David Allan Kostroun.
|
| 264 |
|
1 |
|a [Place of publication not identified] :
|b [publisher not identified] ;
|c 1993.
|
| 300 |
|
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|a x, 52 leaves ;
|c 28 cm.
|
| 336 |
|
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|a text
|b txt
|2 rdacontent
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| 337 |
|
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|a computer
|b c
|2 rdamedia
|
| 338 |
|
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|a online resource
|b cr
|2 rdacarrier
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| 500 |
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|a "Major Subject: Entomology".
|
| 500 |
|
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|a Vita.
|
| 502 |
|
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|b M.S.
|c Texas A&M University
|d 1993.
|
| 504 |
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|a Includes bibliographical references.
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| 520 |
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|a Field and laboratory tests were conducted to determine the toxicity of profenofos/cyhalothrin mixtures to larvae of the tobacco budworm, Heliothis virescens (F.). In a field test, full, half, and quarter rate insecticide mixtures of profenofos and cyhalothrin were compared with full and half rates of each insecticide alone. Toxicity data were obtained with susceptible and pyrethroid-resistant first and third instar tobacco budworm larvae. Field data demonstrated that half rate mixtures of profenofos and cyhalothrin provided approximately equal control to full rates of each compound separately with susceptible larvae. With pyrethroid-resistant larvae, the half rate mix worked as well as the full rate of profenofos and much better than the full rate of cyhalothrin. Overall, the half rate mixture of each insecticide worked better on susceptible larvae than on resistant larvae. Cotoxicity values obtained from laboratory bioassays with each insecticide alone and in combination indicate that profenofos and cyhalothrin are acting independently in the mixture with first instars and antagonistically in the mixture with third instars. The data suggest that mixtures of profenofos and cyhalothrin at reduced rates will achieve control comparable to full rates of either insecticide alone. The data also suggest that reduced rate mixtures should be used before a resistance problem arises, not afterwards. That is, mixtures should be used to prevent resistance problems, not cure them.
|
| 530 |
|
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|a Also available online.
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| 650 |
|
4 |
|a Major entomology.
|
| 856 |
4 |
1 |
|u https://hdl.handle.net/1969.1/ETD-TAMU-1993-THESIS-K86
|z Link to OAKTrust copy
|t 0
|
| 999 |
|
|
|a MARS
|
| 999 |
f |
f |
|s 31d3f111-9bc8-3c7e-b1a8-aeb9f7ae47bf
|i fc0c4762-78d6-3e0f-9d43-cf511651d614
|t 0
|
| 952 |
f |
f |
|p noncirc
|a Texas A&M University
|b J.J. Pickle Campus
|c High Density Repository
|s HDR
|d Remote Storage
|t 0
|e 1993 Thesis K86
|h Other scheme
|i computer -- online resource
|m A14841046020
|
| 952 |
f |
f |
|a Texas A&M University
|b College Station
|c Electronic Resources
|s www_evans
|d Available Online
|t 0
|e 1993 Thesis K86
|h Other scheme
|
| 998 |
f |
f |
|a 1993 Thesis K86
|t 0
|l Remote Storage
|
| 998 |
f |
f |
|a 1993 Thesis K86
|t 0
|l Available Online
|