scholarly journals GREEN PEACH APHID CONTROL WITH SEED-PIECE TREATMENTS, 1999

2000 ◽  
Vol 25 (1) ◽  
Author(s):  
P. M. Denke ◽  
S. L. Blodgett ◽  
K. Kephart
2001 ◽  
Vol 26 (1) ◽  
Author(s):  
P. M. Denke ◽  
S. L. Blodgett ◽  
K. Kephart ◽  
J. Mickelson

1997 ◽  
Vol 22 (1) ◽  
pp. 162-163
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson

Abstract Experimental plots were established on the UI Research and Extension Center, Kimberly, Idaho. Potatoes were planted on 25 Apr and irrigated by solid set sprinkler. The soil type was Portneuf silt loam. Eight treatments and one untreated check plot were replicated four times in a RCB design. Individual plots were 4 rows (36 inch row spacing) wide by 25 ft long with 5 ft alleyways separating the plots. Green peach aphids were mass reared on greenhouse sweet pepper plants (‘California Wonder’) for release into individual plots. Aphid releases were made into test plots on 27 Jun and again on 8 Jul. A total of four heavily infested plants were released per plot. On a weekly basis, adults, large larvae (3-4 instar), small larvae (1 -2 instar), and egg masses of CPB were counted and percent defoliation assessed from whole plant inspections of the center 5 hills of the middle 2 plot rows. GPA counts were made on 20 leaves chosen at random from the top, middle and bottom sections of plants in the center two rows of each plot. Admire treatments were applied at plant in-furrow over the seed piece on 25 Apr. Temik and Thimet were applied in-furrow with the seed piece also at planting. Furadan was applied in a six-inch banded S over the plants at 4-inch rosette stage of plant growth on 4 Jun using a CO2 pressurized backpack sprayer. All foliar treatments were broadcast on 29 Jun using the backpack CO2 sprayer at a rate of 20 gpa (30 psi, with 4, 10X hollow cone nozzles). On 11 Jul, a second foliar application of Metasystox-R + Asana, Monitor and Alert was made. Data were analyzed using ANOVA and Newman-Keuls multiple means comparison.


2000 ◽  
Vol 25 (1) ◽  
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson

1996 ◽  
Vol 21 (1) ◽  
pp. 171-171
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson

Abstract Experimental plots were established on the UI Research and Extension Center, Kimberly, Idaho. Potatoes were planted on 25 Apr and irrigated by solid set sprinkler. The soil type was Portneuf silt loam. Four treatments and one untreated check plot were replicated four times in a RCB design. Individual treatment plots were 4 rows (36 inch row spacing) wide by 25 ft long with 5 ft alleyways separating the plots. Green peach aphids were mass reared on greenhouse sweet pepper plants (California Wonder) for release into individual plots. Aphid releases were made into test plots the last wk in Jun and again in the first wk of Jul. A total of four heavily infested pepper plants was released per plot. Treatment sprays were broadcast applied using a CO2 pressurized backpack sprayer (30 psi) and delivering 20 gal finished spray per acre (four, 10X hollow cone nozzles). Aphid counts were made from non-destructively examining 10 randomly selected leaves in the center two rows of each plot. Leaves were sampled from the top, middle, and bottom sections of the plants. The data collected and presented are the total number of aphids per 20 leaves. On 19 Jul a pre-count was taken and on 21 Jul all treatment applications were made. Data were analyzed using ANOVA and Student-Newman-Keuls multiple means comparison.


2005 ◽  
Vol 30 (1) ◽  
Author(s):  
Paul J. Semtner ◽  
Lakshmipathi Srigiriraju

1998 ◽  
Vol 23 (1) ◽  
pp. 134-134 ◽  
Author(s):  
Robert L. Stoltz ◽  
Nancy A. Matteson

Abstract Experimental plots were established on the UI Research and Extension Center, Kimberly, Idaho. Potatoes were planted on 28 Apr and irrigated by solid set sprinkler. The soil type was Portneuf silt loam. Seven treatments and one untreated check plot were replicated four times in a randomized complete block design. Individual treatment plots were 4 rows (36-inch row spacing) wide by 25 ft long with 5-ft alleyways separating the plots. Green peach aphids were mass reared on greenhouse mustard plants (Brassica juncea L. ‘Florida Broadleaf’) for release into individual plots. Aphid releases were made into test plots on 14 Jun. A total of four heavily infested leaves were used to inoculate each plot. Treatment sprays were broadcast applied using a CO2-pressurized backpack sprayer (30 psi) and delivering 20 gal finished S per acre (four, 10X hollow-cone nozzles). Aphid counts were made by non-destructively sampling leaves at random from the top, middle, and bottom sections of plants in the center two rows of each plot. The data collected and presented is the total no. of aphids per 20 leaves. On 25 Jun a pre-treatment count was made and all treatments were applied later that d. Data was analyzed using ANOVA and Newman-Keuls multiple means comparison (Significance Level P = 0.05).


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