The Acridiidæ of Minnesota. By M. P. Somes, University of Minnesota, Agricultural Experiment Station. Bulletin 141. University Farm, July 1914. 100 pp., 4 pls. (3 coloured).

Abstract This study was conducted at the University of Minnesota Rosemount Agricultural Experiment Station. Cabbage was transplanted bare-root on 28 Jun. Plots consisted of two 25 ft (7.6 m) rows on 40 inch (1.0 m) centers with plants spaced 13 inches (0.33 m) apart. Ten ft (3.0 m) borders and 10 ft (3.0 m) alleys separated plots. Treatments were arranged in a RCB design with 4 replications. Treatment applications were initiated during the 9-12 true leave stage, before precupping. Treatments were applied 26 and 31 Jul, 08, 14 and 21 Aug using a moderate-clearance Spirit sprayer with 3 TX-10 hollowcone nozzles (1 overhead and 2 drop nozzles) per row. The sprayer was calibrated to deliver 27 gpa (252.5 liters/ha) at 47 psi (3.3 kg/cm2) and 3 mph (4.8 km/hr). Bond sticker/extender was added to all treatments (except Confirm treatments) at a rate of 0.10 fl oz/gal (0.8 ml/liter). Counts were taken from 5 heads per plot on 15 Aug and 10 heads per plot on 26 Aug. Ten heads per plots were evaluated for feeding damage on 30 Aug using Green’s rating scale (J. Econ. Entomol. 1969 62:4 798-800): 1 = no feeding damage; 2 = minor feeding damage on the wrapper leaves (1 % eaten); 3 = moderate feeding damage on the wrapper leaves (2–5% eaten) with no head damage; 4 = moderate feeding damage on the wrapper leaves (6-10% eaten) and minor feeding scars on the head; 5 = moderate to heavy feeding on the wrapper leaves (11-30% eaten) and moderate feeding scars on the head; 6 = >30% of the wrapper leaves eaten and numerous feeding scars on the head.

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Mobilizing Support for Agricultural Research at the Minnesota Agricultural Experiment Station

Policy for Agricultural Research ◽

10.1201/9780429301940-9 ◽

2019 ◽

pp. 211-233

Author(s):

Richard J. Sauer ◽

Carl E. Pray

Keyword(s):

Agricultural Research ◽

Agricultural Experiment Station ◽

Minnesota Agricultural Experiment Station ◽

Experiment Station ◽

Agricultural Experiment

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Control of Potato Leafhopper on Potatoes Using Reduced Ratesl of Insecticides, 1997

Arthropod Management Tests ◽

10.1093/amt/23.1.137 ◽

1998 ◽

Vol 23 (1) ◽

pp. 137-137

Author(s):

Robert A. Suranyi ◽

Craig A. Longtine ◽

David W. Ragsdale ◽

Edward B. Radcliffe

Keyword(s):

Late Blight ◽

Post Treatment ◽

Potato Leafhopper ◽

Plant Spacing ◽

University Of Minnesota ◽

Agricultural Experiment Station ◽

Minnesota Agricultural Experiment Station ◽

Agricultural Experiment ◽

Pre Treatment ◽

The University

Abstract Potatoes were planted 19 May at the University of Minnesota Agricultural Experiment Station, Rosemount, MN. Plant spacing was 36 inches between rows and 12 inches between plants within rows. Treatments were arranged in a RCB design with 3 replications. Plots were 8 rows wide by 40 ft long, separated by 12 ft of al-falfa borders on all sides to enhance PLH population. Thirty-five midplant leaves were sampled from the center four rows of each plot. Pre-treatment counts and treatment applications were made 29 Jul. All treatments were applied with a tractor-mounted Brittonya boom sprayer delivering 45 gpa at 90 psi with 3 nozzles per row. Post-treatment counts of PLH nymphs were made 30 Jul, 24 hours after treatment. Early and late blight were controlled by eight applications of chlorothalonil. Analyses of variance were calculated following transformation of the data using logl0(x).

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