scholarly journals Control of Japanese Beetle and Masked Chafer Grubs with Halofenozide (RH-0345), 1995

1997 ◽  
Vol 22 (1) ◽  
pp. 376-377
Author(s):  
D. Held ◽  
D. A. Potter ◽  
C. Williamson ◽  
C. Keathley ◽  
B. Kunkel
Keyword(s):  
Soil Ph ◽  
Tall Fescue ◽  
Silt Loam ◽  
Japanese Beetle ◽  
University Of Kentucky ◽  
Soil Population ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Low Volume ◽  
The University

Abstract This test was con ducted in turf-type tall fescue at the University of Kentucky Spindletop Farm, near Lexington. The turf was on a Maury silt loam soil (pH = 6.4) with negligible thatch. Plots (4X6 ft; 2 ft untreated borders) were arranged in a RCB, with 4 replications. The turf was treated on 27 Jul, during flight of JB. The soil population consisted mostly of eggs, with some 1st instars. Granular formulations were preweighed, mixed with dry sand, and applied by gloved hand. Liquid applications were applied at 50 gal/acre using a low volume, CO2 sprayer equipped with 4 Spraying System 8004 Tee Jet nozzles that delivered 2109 g pressure per cm2. Each plot was syringed with about 1/8 inch of water within 5 min after application, and the whole site received 3/4 inch irrigation as soon as the last treatment was applied. Conditions during application were 88°F with winds < 10 mph. There was 0.23 inch of rainfall on 26 Jul. the day before the test. There was no additional rain until 5 Aug, when 1.78 inch fell. Plots were sampled on 12 Sep by cutting a 3 X 1.5 foot strip, aboul 3 inches deep, from the center of each plot with a motorized sod cutter. Sod was rolled back, broken apart, and examined for grubs which were counted and identified.

scholarly journals Control of White Grubs with Halofenozide (RH-0345), 1995

1997 ◽  
Vol 22 (1) ◽  
pp. 376-376
Author(s):  
D. Held ◽  
D. A. Potter ◽  
C. Williamson ◽  
C. Keathley ◽  
B. Kunkel
Keyword(s):  
Soil Ph ◽  
Tall Fescue ◽  
Silt Loam ◽  
White Grubs ◽  
University Of Kentucky ◽  
Soil Population ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Low Volume ◽  
The University

Abstract This test was conducted in turf-type tall fescue at the University of Kentucky Spindletop Farm, near Lexington. The turf was on a Maury silt loam soil (pH = 6.4) with negligible thatch. Plots (4X6 ft; 2 ft untreated borders) were arranged in a RCB, with 4 replications. The turf was treated on 27 Jul, during flight of JB. The soil population consisted mostly of eggs, with some 1 st instars. Granular formulations were preweighed, mixed with dry sand, and applied by gloved hand. Liquid applications were applied at 50 gal/acre using a low volume, CO2 sprayer equipped with 4 Spraying System 8004 Tee Jet nozzles that delivered 2109 g pressure per cm2. Each plot was syringed with about 1/8 inch of water within 5 min after application, and the whole site received 3/4 inch irrigation as soon as the last treatment was applied. Conditions during application were 88°F with winds < 10 mph. There was 0.23 inch of rainfall on 26 Jul, the day before the test. There was no additional rain until 5 Aug, when 1.78 inch fell. Plots were sampled on 14 Sep. A 3 X 1.5 ft strip, about 3” deep, was cut from the center of each plot with a motorized sod cutter. The sod was rolled back and broken apart, and all grubs present were counted and identified.

scholarly journals Influence of Phosphorus in Starter Fertilizer on the Establishment of Tall Fescue

HortScience ◽  
2018 ◽  
Vol 53 (12) ◽  
pp. 1897-1906 ◽  
Author(s):  
Bohan Liu ◽  
Peter J. Landschoot
Keyword(s):  
Tall Fescue ◽  
Late Summer ◽  
Primary Objective ◽  
Tissue Response ◽  
Soil Test ◽  
Silt Loam ◽  
Growth Responses ◽  
Starter Fertilizer ◽  
Silt Loam Soil ◽  
Loam Soil

Phosphorus (P)-containing starter fertilizers are often recommended for establishing new turf, regardless of P levels indicated by the soil test. However, few field studies have been conducted to determine the effects of P in starter fertilizer on the rate of turf establishment. The primary objective of this study was to determine if P in starter fertilizer enhances tall fescue groundcover and growth during establishment on silt loam soil. This 2-year field study was conducted on silt loam soil tilled with a rototiller or core-aerated and vertically sliced. Mehlich-3 P levels ranged from 38 to 270 mg·kg−1. Experiments were conducted during late summer and fall, and all tests were seeded with ‘Bullseye’ tall fescue (Festuca arundinacea Schreb.). Treatments included 49 and 73.5 kg·ha−1 of nitrogen (N) without P, 49 kg·ha−1 of N plus three different rates of P (24.5, 49, and 73.5 kg·ha−1), and a nonfertilized control. Comparisons between groups that received treatment with 49 kg·ha−1 of N without P and treatments with 49 kg·ha−1 N with P revealed few significant groundcover responses to the addition of P. Of 12 groundcover assessments performed during four experiments, contrasts revealed only one instance of a higher percentage of groundcover in response to the addition of P. This occurred during an experiment having a pretreatment Mehlich-3 P level of 38 mg·kg−1. Comparisons indicated greater clipping yields in response to the addition of P in one of the four experiments. This occurred in soil that was core-aerated and sliced with an initial Mehlich-3 P level of 66 mg·kg−1. In most cases, Mehlich-3 P levels at the end of each experiment increased as the P application rates increased. The only instance in which comparisons between treatment with 49 kg·ha−1 N without P and treatments with 49 kg·ha−1 N with P demonstrated a significant leaf tissue response to P during the experiment with soil that was core-aerated and sliced with a pretreatment Mehlich-3 P level of 66 mg·kg−1. When individual treatments were compared, the 73.5 kg·ha−1 N treatment without P produced similar or higher groundcover and clipping yields than all other treatments during all four experiments. This study revealed few groundcover and variable tall fescue clipping yield responses to P additions when applied at rates used for starter fertilizer applications on silt loam soil during late summer and fall. Groundcover and growth responses due to P in starter fertilizers do not appear to be solely related to soil test P levels, and other factors such as the method of establishment (tilling soil vs. core-aerating and slicing the soil surface), environmental conditions, and the N content of soil may be involved.

scholarly journals VEGETATIVE GROWTH AND NUTRIENT LEVELS OF LINGONBERRIES GROWN IN FOUR ALASKAN SUBSTRATES

1982 ◽  
Vol 62 (4) ◽  
pp. 969-977 ◽  
Author(s):  
PATRICIA S. HOLLOWAY ◽  
ROBERT M. VAN VELDHUIZEN ◽  
CECIL STUSHNOFF ◽  
DAVID K. WILDUNG
Keyword(s):  
Vegetative Growth ◽  
Sandy Loam ◽  
Leaf Size ◽  
Maximum Growth ◽  
Stem Length ◽  
Dry Matter Accumulation ◽  
Silt Loam ◽  
Tissue Samples ◽  
Silt Loam Soil ◽  
Loam Soil

Vegetative growth of lingonberries was observed on plants growing in four unsterilized, native-Alaskan substrates: coarsely-ground Lemeta peat, Fairbanks silt loam soil, a mixture of peat and silt loam soil and washed Chena very fine sandy loam soil. Following three growing seasons, plants in the peat treatment showed the greatest increase in vegetative growth as revealed by the number of new stems produced, stem length and dry weight per plant. Leaf size did not differ among substrate treatments. The leaves on plants grown in the peat substrate remained green throughout the entire experiment. The leaves of plants in all other treatments showed varying degrees of chlorosis followed by reddening and necrosis. Differences in concentration of N, P, K, Mn, Fe, Zn and Al in whole-plant tissue samples were recorded. The results indicate lingonberries should be grown in a peat substrate for maximum growth and dry matter accumulation.

Sign in / Sign up

Export Citation Format

Share Document