scholarly journals Potato Insect Control, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 120-121
Author(s):  
Andrew C. Slocombe ◽  
David N. Ferro
Keyword(s):  
Soil Type ◽  
Sandy Loam ◽  
Block Design ◽  
Insect Control ◽  
Population Densities ◽  
Fine Sandy Loam ◽  
Randomized Complete Block Design ◽  
Separate Treatment ◽  
Potato Insect

Abstract Potatoes were planted on 30 Apr in South Deerfield, Massachusetts. Fertilizer (600 lbs 1 ON: 10P:1 OK/acre) was banded into the furrow at planting, and an additional 200 lbs was applied at hilling on 30 Jun. Soil type was a fine sandy loam with a pH of 5.6. Manzate (fungicide) was applied at 1 lb. Al/acre on 30 Jun and 25 Jul. Treatments were replicated 4 times in a randomized complete block design. Each plot consisted of two 30 ft. rows with a 6 ft. fallow area separating each plot. Treatments were applied with CO2-pressurized sprayers at 40 psi, delivering about 70 gal/acre. CPB population densities were determined by counting larvae on 5 plants or whole stalks in each plot. The number of early instars (first and second) or late instars (third and fourth) were recorded. Admire was applied in the furrow at planting (136 g AI/A), and in a separate treatment it was applied to the base of the plants on 8 Jun (91 g AI/A). All foliar treatments were first applied on 15 Jun, and the 7 day treatments were applied again on 22, 29 Jun, 6, 13, 20 and 27 Jul. The 14 day treatments were applied on 15, 29 Jun, 13 and 27 Jul.

scholarly journals Potato Insect Control, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 122-122
Author(s):  
Andrew C. Slocombe ◽  
David N. Ferro
Keyword(s):  
Soil Type ◽  
Sandy Loam ◽  
Block Design ◽  
Insect Control ◽  
Single Application ◽  
Population Densities ◽  
Fine Sandy Loam ◽  
Randomized Complete Block Design ◽  
Potato Insect ◽  
Whole Plants

Abstract Potatoes were planted on 30 Apr in South Deerfield, Massachusetts. Fertilizer (600 lbs 10N:10P:10K/acre) was banded into the furrow at planting, and an additional 200 lbs was applied at hilling on 30 Jun. Soil type was a fine sandy loam with a pH of 5.6. Manzate (fungicide) was applied at 1 lb. Al/acre on 30 Jun and 25 Jul. Treatments were replicated 4 times in a randomized complete block design. Each plot consisted of two 30 ft. rows with a 6 ft. fallow area separating each plot. All samples were taken from the center two rows. Treatments were applied with CO2-pressurized sprayers at 40 psi, delivering about 70 gal/acre. CPB population densities were determined by counting larvae on 5 whole plants or stalks in each plot. The number of early instars (first and second) or late instars (third and fourth) were recorded. Admire was applied to the base of plants on 8 Jun; plants were about 8” tall. The foliar treatments were first applied on 15 Jun, and then again on 22, 29 Jun, 6, 13, 20 and 27 Jul. The first two abamectin treatments were treated with Novodor at 2.5 qt/acre on 15 and 22 Jun followed by a single application of abamectin on 29 Jun, while the last two abamectin treatments were treated with Novodor at 2.5 qt/acre weekly from 15 Jun through 13 Jul and then on 20 Jul received a single application of abamectin. Fipronil treatments were applied on 15, 29 Jun, 13 and 27 Jul.

scholarly journals Potato Insect Control, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 128-128
Author(s):  
A. C. Slocombe ◽  
D. N. Ferro
Keyword(s):  
Soil Type ◽  
Sandy Loam ◽  
Block Design ◽  
Insect Control ◽  
Population Densities ◽  
Egg Masses ◽  
Fine Sandy Loam ◽  
Randomized Complete Block Design ◽  
Potato Insect

Abstract Potatoes were planted on 5 May in South Deerfield, Massachusetts. Fertilizer (600 lbs 10N:10P:10K/ acre) was banded into the furrow at planting. Soil type was a fine sandy loam with a pH of 5.6. Manzate (fungicide) was applied at 1 lb Al/acre on 24 Jun and 6 Jul. CPB densities on 15 Jun were 1.4 adults, 3.3 egg masses and 2.9 early instars per plant. Treatments were replicated 4 times in a randomized complete block design. Each plot consisted of two 30 ft. rows with a 6 ft. fallow area separating each plot. All samples were taken from the center plants in each plot. Treatments were applied with CO2-pressurized sprayers at 40 psi, delivering about 70 gal/acre. CPB population densities were determined by counting larvae on 5 whole stalks in each plot. The number of early instars (first and second) or late instars (third and fourth) were recorded. All treatments were first applied on 16 Jun, and again on 23 and 30 Jun, and 7 and 14 Jul.

scholarly journals Potato Insect Control, 1992

1994 ◽  
Vol 19 (1) ◽  
pp. 127-127
Author(s):  
A. C. Slocombe ◽  
D. N. Ferro
Keyword(s):  
Soil Type ◽  
Second Generation ◽  
Sandy Loam ◽  
Block Design ◽  
Insect Control ◽  
Egg Hatch ◽  
Egg Masses ◽  
Fine Sandy Loam ◽  
Randomized Complete Block Design ◽  
Potato Insect

Abstract Potatoes were planted on 1 May in South Deerfield, Massachusetts. Fertilizer (600 lbs 10N:10P:10K/ acre) was banded into the furrow at planting. Soil type was a fine sandy loam with a pH of 5.6. Manzate (fungicide) was applied at 1 lb. Al/acre on 1 Jul. CPB densities on 4 Jun were 1.2 adults, 50 eggs, 0.3 early instars per plant, and CPB densities on 15 Jun were 3.3 adults, 167 eggs, 6 early instars and 1.7 late instars per plant. Treatments were replicated 4 times in a randomized complete block design. Each plot consisted of two 30 ft. rows with a 6 ft. fallow area between plots. Treatments were applied with CO2-pressurized sprayers at 40 psi, delivering 70 gal/acre. Novodor and Foil OF were applied on 5 (first hatch), 15 (30% hatch) and 22 (50% hatch and 4th instar observed) Jun. All other applications were made on 15, 22, and 29 Jun. For second generation larvae, percentage egg hatch was based on flagging 10 egg masses at the beginning of the ovipositional period, using the percentage hatch based on these eggs. For second generation, Novodor and Foil OF were applied on 6 (first hatch), 8 (30% hatch) and 10 (50% hatch) Jul. All other treatments were applied on 13 (observed 3rd instars) and 24 Jul.

scholarly journals Potato Insect Control, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 130-130
Author(s):  
A. C. Slocombe ◽  
D. N. Ferro
Keyword(s):  
First Generation ◽  
Second Generation ◽  
Sandy Loam ◽  
Block Design ◽  
Insect Control ◽  
Population Densities ◽  
Egg Masses ◽  
Fine Sandy Loam ◽  
Randomized Complete Block Design ◽  
Potato Insect

Abstract Potatoes were planted on 5 May in South Deerfield, Massachusetts. Fertilizer (600 lbs 10N:10P:I0K/ acre) was banded into the furrow at planting. Soil was a fine sandy loam with a pH of 5.6. Manzate (fungicide) was applied at 1 lb. Al/acre on 24 May, and 18 and 27 Jun. CPB densities on 15 Jun were 1.6 adults, 3.8 egg masses and 7.9 early instars per plant. Treatments were replicated 4 times in a randomized complete block design. Each plot consisted of four 30 ft. rows with a 6 ft. fallow area separating each plot. All samples were taken from the center plants in the center two rows for each plot. Treatments were applied with CO2-pressurized sprayers at 40 psi, delivering about 70 gal/acre. CPB population densities were determined by counting larvae on 10 whole stalks in each plot. The number of adults, egg masses, early instars (first and second) or late instars (third and fourth) were recorded. All treatments were first applied on 16 Jun, and again on 23 and 30 Jun, and 7, 14 and 21 Jul. The every other week applications were applied on 16 and 30 Jun and 7 and 21 Jul (second generation). For the Novodor-Abamectin rotation, Novodor was applied on 16 and 23 Jun followed by Abamectin on 30 Jun for first generation, and for second generation Novodor was applied on 7 and 14 Jul followed by Abamectin on 21 Jul. For the Abamectin-Novodor rotation, Abamectin was applied on 16 and 23 Jun followed by Novodor on 30 Jun for first generation, and for second generation Abamectin was applied on 7 and 14 Jul followed by Novodor on 21 Jul.

scholarly journals Evaluation of Insecticides Against Scarab Grub Complex on Blueberries, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 60-61
Author(s):  
S. Polavarapu
Keyword(s):  
Species Composition ◽  
Soil Type ◽  
Treatment Effects ◽  
Sandy Loam ◽  
Block Design ◽  
Randomized Complete Block Design ◽  
Before And After ◽  
Full Production ◽  
Spray Field

Abstract This trial was conducted in a 5-year-old ‘Duke’ blueberry field in full production, near Hammonton, NJ. Blueberry bushes were approximately 4-5 ft tall and spaced 9 X 4 ft apart and were irrigated season long with overhead sprinklers. Soil type at this location was sandy loam with a pH of 4.0. Treatments were replicated 5 times in a randomized complete block design with each replicate consisting of 40-ft long row of 10 bushes. Treatments were separated by 18-ft between blocks and 20-ft between treatments within a block. Insecticides were applied as a 2-ft band on both sides of the plant for a total of 160 ft2 per replicate. Treatments were applied on 13 Aug with a CO2 pressurized Model T backpack sprayer (R & D sprayers) equipped with a single TeeJet nozzle (8002VS). The sprayer was operated at 40 PSI and calibrated to deliver 150 gpa of finished spray. Field was irrigated with approximately 0.5 and 1.0 inches of water before and after spraying, respectively. Treatment effects were assessed by examining soil and roots in 12-inches-diam. by 16-inches deep areas around each of 4 randomly selected plants per replication for scarab grubs. Plants were sampled between 20-25 September. At the time of sampling, species composition of grubs (n = 2,015) was 92.8% OB, 6.7% AGB and 0.5% M-JB.

Effect of Bio and Organic Fertilizers on Pumpkin's (Cucurbita pepo L.) Leave Content of N, P, and K

2020 ◽  
Vol 10 (1) ◽  
pp. 241-245
Author(s):  
Ammar Hameed Madi ◽  
Jawad A. Kamal Al-Shibani
Keyword(s):  
Cucurbita Pepo ◽  
Sandy Loam ◽  
Block Design ◽  
Organic Fertilizers ◽  
Flowering Stage ◽  
College Of Agriculture ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Loam Soil ◽  
Four Levels

This study was conducted to investigate the effect of bacterial bio-fertilization A. chroococcum and P. putide and four levels of compost (0, 1, 2, 3) tons.h-1 on the leaves content of N.P.K elements. The experiment was carried out in one of the greenhouses of the College of Agriculture - University of Al-Qadisiyah during fall season 2018-2019. It designed in accordance with the Randomized Complete Block Design (RCBD) with three replicates in sandy loam soil. The means of treatments were compared with the least significant difference (LSD) at (5)% probability level. The results present that the treatments of A. chroococcum, P. putide and compost at (3) tons.kg-1 significantly increases the leaves content of K.P.K compared to all other treatments in the flowering stage (4.970, 0.5000, and 4.930) mg.kg-1, respectively. This treatment was followed by the effect of the treatment of A. chroococcum and compost at (3) tons.kg-1, which increases the values of all traits except the leaf content of (P). Bio-fertilizer with P. putide + A. chroococcum significantly increases the leaves' content of P.

scholarly journals Foliar Sprays to Control Ear Invading Insects in Sweet Corn, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 87-87
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Karen Mulford ◽  
John Nottingham
Keyword(s):  
Soil Type ◽  
Sweet Corn ◽  
Block Design ◽  
Loamy Sand ◽  
Fresh Market ◽  
Foliar Sprays ◽  
Randomized Complete Block Design

Abstract ‘NK-199’ sweet corn was planted in 4-row plots 100 ft in length on 1 Jun ‘94. Distance between rows was 3 ft. Distance between plants within the row was 8 inches with the center 2 rows serving as record rows. Plots were replicated 4 times in a randomized complete block design. Sprays were applied with an International Harvester 770 Hi-Clear sprayer. The spray boom was adjusted to spray the silk area with each row being covered by 4 nozzles. The sprayer was equipped to treat 4 rows. All treatments were mixed in 10 gallons of water and applied at the rate of 25 gal/acre with 50 psi. Spray treatments were applied at 30% silk on 20 Jul, 24 Jul and 1 Aug. At harvest (4 Aug), 30 ears from the center 2 rows of each plot were husked and evaluated for worm damage as fresh-market (clean ears, no damage evident), processing (evidence of tip feeding but less than 3.6 cm tip damage), and culls (tip damage beyond 3.6 cm to the side and/or bottom). All worms found within the husk or ear were identified. The soil type was Norfolk “A” loamy sand.

Sorption and Mobility of Chlorimuron in Alabama Soils

Weed Science ◽  
1989 ◽  
Vol 37 (3) ◽  
pp. 428-433 ◽  
Author(s):  
Andrew J. Goetz ◽  
Robert H. Walker ◽  
Glenn Wehtje ◽  
Ben F. Hajek
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Soil Ph ◽  
Soil Type ◽  
Sandy Loam ◽  
Solution Technique ◽  
Silt Loam ◽  
Fine Sandy Loam ◽  
Highly Correlated ◽  
Layer Chromatography

Soil thin-layer chromatography and a soil solution technique were used to evaluate chlorimuron adsorption and mobility in five Alabama soils. The order of adsorption was atrazine > metribuzin > chlorimuron; mobility was chlorimuron > metribuzin > atrazine. The order of adsorption of chlorimuron in the five soils was Sumter clay > Eutaw clay > Lucedale fine sandy loam > Decatur silt loam > Dothan sandy loam, and Rfvalues were 0.63, 0.73, 0.69, 0.76, and 0.80, respectively. Chlorimuron mobility and adsorption were not highly correlated to any one soil type. Adsorption of all herbicides was inversely related to soil pH. Maximum chlorimuron adsorption in the Hiwassee loam was attributed to the high hematite and gibbsite content of the soil.

scholarly journals Phytotoxicity of herbicides on Cynodon dactylon

2015 ◽  
Vol 7 (2) ◽  
pp. 832-835
Author(s):  
Siddappa Siddappa ◽  
B. L. Geeta ◽  
Raj Likhitha ◽  
K. V. Jayaprasad ◽  
Revannappa R. Bandri
Keyword(s):  
Cynodon Dactylon ◽  
Sandy Loam ◽  
Block Design ◽  
Experimental Plot ◽  
Randomized Complete Block Design ◽  
Broad Leaf ◽  
Dimethyl Amine ◽  
Phytotoxic Effect ◽  
Loam Soil ◽  
Hand Weeding

Field experiment was conducted to manage the sedge and broad leaf weeds in lawn during November to December 2013 to February to March 2014. Experimental plot was red sandy loam soil with pH 6.50.The experimental plot consisted of bermuda grass Cynodon dactylon which was established through turfing. The experimental plot was laid out in a randomized complete block design (RCBD) having 17 treatments with three replications. Herbicide treatments include 2, 4-D sodium salt 80 WP at (2, 3 and 4g/lit of water), 2, 4-D dimethyl amine salt 58% EC at (5, 7.5 and 10 ml/lit of water), carfentrozone ethyl 40 DF at (0.25, 0.5 and 1 g/lit of water), fluroxypyr meptyl 48% EC at (1.5, 3 and 6 ml/lit of water) and chlorimuron methyl + metasulfuron methyl at (0.3, 0.4 and 0.5 g/lit of water). Hand weeding was done at every 20 days interval at 20 days after application of herbicides and also maintained one unweeded control in during November to December and February to March. The phytotoxic symptoms were observed only fluroxypyr meptyl 48% EC applied at 6 ml/lit of water at 3, 7, 10, 15 and 25 days after application of herbicides (DAAH) but it recovered at later stages. However, the other herbicides did not cause any phytotoxic effect on C. dactylon.

Effects of drip fertigation of NH4-N and P on soil pH and cation leaching

1993 ◽  
Vol 73 (2) ◽  
pp. 157-164 ◽  
Author(s):  
P. Parchomchuk ◽  
G. H. Neilsen ◽  
E. J. Hogue
Keyword(s):  
Soil Ph ◽  
Malus Domestica ◽  
Soil Acidification ◽  
Sandy Loam ◽  
Block Design ◽  
Apple Trees ◽  
Malus Domestica Borkh ◽  
Cation Leaching ◽  
Randomized Complete Block Design ◽  
Drip Fertigation

Mixtures of ammonium nitrate and ammonium polyphosphate fertilizers were used to drip fertigate Summerland McIntosh apple trees (Malus domestica Borkh.) grown on M.9 rootstocks in gravelly sandy loam. Levels of N corresponding to 25 and 50% of the recommended broadcast rate (23.5 and 47.0 g tree−1, respectively) and three levels of P (0, 17.5 and 35.0 g tree−1) were applied in a factorial randomized complete block design. Soil acidification began within 1 yr in a zone extending approximately 60 cm vertically and horizontally from the drip source. Acidification was most severe at 20–30 cm directly beneath the emitter where the soil pH decreased from 5.8 to 4.5 after 1 yr and to 3.7 after three seasons of fertigation. Rate and magnitude of pH decline were equal for both rates of N and acidification was not enhanced by the simultaneous addition of P. Calcium, Mg and K were leached to the periphery of the acidified zone. The rapid displacement of K may be of concern, particularly when NH4 forms of N are drip-fertigated in coarse-textured soils with marginal K levels. Key words: Fertigation, soil acidification, cation leaching, nitrogen fertilizer

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