Apple, Miticide Evaluation Experiment, 1978 Horsburgh, R. L.; Parrella, M. P.; McCaffrey, J. P.
Insecticide and acaricide tests,
01/1979, Volume:
4, Issue:
1
Journal Article
Open access
Abstract
All acaricide treatments and the water control were applied in a manner to duplicate the alternate-row application technique employed by many commercial growers. A Swanson airblast sprayer, ...calibrated to deliver 25 gal/acre (94.64 liter/ha) at 100 psi (7.03 kg/cm2) at a ground speed of 2 mph (3.22 km/hr) when spraying one side of the row, was used to apply all materials on each spray date. Each plot consisted of a single row of 35 trees of 8-yr-old Red Del icious. Samples for the Plictran standard included in the tables were taken from similar adjacent trees in the remainder of the 4-acre block. Four subsamples of 25 leaves collected from each of 4 trees, spaced evenly along the treatment row were collected in plastic bags, placed in an ice chest, and taken to the laboratory where they were brushed following the Henderson-McBurnie method. Counts of European red mites, European red mite eggs, and Apple rust mites were recorded. Two applicationsweremade, the first on Jul 16 to the south side ofthe row and the second on Jul 28 to the north side. Countswere madeon Jul 15, 18, 25, 28, and 29. Data are presented as percent change between the two counting dates indicated in each table. The average number of mites or mite eggs is also included to give relevance to the percentages. No phytotoxic effects were noted.
A rapid, simple, cost-effective, non-radioactive method for detection of the most common mutations causing beta-thalassemia in Mediterranean people has been developed by combining multiplexing with ...the amplification refractory system. This approach, the multiplex amplification refractory mutation system (MARMS), provides an easy assay for direct detection of normal and mutant beta-globin genes in homozygotes and heterozygotes. The strategy involves multiplex PCR of four of the five regions of interest within the beta-globin gene in a single reaction containing a common oligoprimer and either the normal or mutant oligonucleotides corresponding to IVS-1 nucleotide 1 or IVS-1 nucleotide 6, IVS-1 nucleotide 110, codon 39, and IVS-2 nucleotide 1 regions. Primers are chosen so that the sizes of the four PCR products differ, thereby facilitating detection on agarose gels following amplification. Patient samples are primed with either four normal or four mutant oligonucleotide mixtures and the common oligoprimer, and PCR products run in parallel on gels to detect band presence or absence. This approach simplifies mutation detection and shows promise for automation employing fluorescent-tagged primers.
Abstract
Materials were applied to individual 4-wk-old chrysanthemum plants, cvs. Hurricane, with a 1-gal B&G sprayer at 60 psi 27 Aug. Five fifth-stage larvae were immediately placed on each plant ...and confined with an inverted, ventilated 1-qt plastic container. Mortality was assessed after 48 h and each surviving larva was placed individually on untreated commercial beet armyworm diet. Mortality was assessed every 48 h thereafter until all surviving larvae had pupated. To correct for differences in escaping larvae between treatments, the data were expressed as percent mortality for each ceplicate. Arcsin square root transformations were performed on the data prior to ANOVA.
Abstract
Phytotoxicity trials on bedding plants, Los Angeles, Co., CA, evaluated the effects of 1X, 2X and 4X rates of Avid 0.15E (0.01 lb (AI)/acre), Broot 50W, Dimilin 25W, Zolone 3E, and Evisect ...50SP (1X = 0.5 lb (AI)/100 gal). One flat, containing 9 pony paks with 6 plants, was evaluated per treatment rate for each species. The materials were applied to runoff with a 2.5 gpm piston pump hand sprayer at 180 psi on 15 Jul (temp = 25-28°C). Phytotoxicity readings were compared to a water check 22 and 29 Jul.
Abstract
Phytotoxicity trials on bedding plants, Los Angeles Co, CA, evaluated the effects of 1 x , 2 x and 4 x rates of FMC 54800 10WP and FMC 54800 2E (1 x = 0.125 lb AI/100 gal and Zectran 2E (1 x ...= 0.25 lb All 100 gal). Two flats, each containing 9 pony paks with 6 plants, were evaluated per treatment for each species. The materials were applied to runoff with a 2.5 gpm piston pump hand sprayer with a 5003 Spraying Systems Nozzle at 150 psi on 2 Mar and 12 Mar, 24-25°C and 22-24°C, respectively. Phytotoxicity readings were compared to a water check 7 and 10 days after the first application and 7 days after the second application.
Abstract
Phytotoxicity trials on bedding plants, Los Angeles County, Calif., evaluated the effects of 1 x , 2 X , and 4 X rates of FMC 54800 2E, FMC 54800 10WP (1 x =0.125 lb AI/100 gal) and Zectran ...2E (1 x = 0.5 lb AI/100 gal). Two flats, each containing 9 pony paks with 6 plants, were evaluated per treatment for each species. The materials were applied to runoff with a 2.5 gpm piston pump hand sprayer with a 5003 Spraying Systems® nozzle @ 150 psi on 3 Jul and 17 Jul, 33-38°C and 29-31°C, respectively. Weekly phytotoxicity readings were compared to a water check.
