scholarly journals Soil Insecticides for Insect Control in Field Corn, Painter, Va 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 212-212
Author(s):  
John Speese
Keyword(s):  
Insect Control ◽  
Plant Spacing ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Experiment Station ◽  
Field Corn ◽  
No Till ◽  
Agricultural Experiment ◽  
Soil Insecticides

Abstract Field corn was planted no-till on 7 May at the Eastern Shore Agricultural Experiment Station, Painter, VA. Treatments were applied pre-planting in the manner indicated in the table. Each plot consisted of four 25 ft rows bordered on each side by an untreated guard row. Plant spacing was 30 inches between rows with 9-10 inches between plants. Stand counts averaged 36 plants per 25 ft row on 28 May. The number of damaged whorls was counted in the 2 center rows (50 ft total) of each plot on 4 Jun and the number of damaged (stunted or twisted) stalks was counted in the 2 center rows (50 ft total) of each plot on 23 Jun.

scholarly journals Effect of plant spacing on growth and yield of winged bean

1969 ◽  
Vol 72 (2) ◽  
pp. 273-276
Author(s):  
C. T. Lee
Keyword(s):  
Winged Bean ◽  
Growth And Yield ◽  
Row Spacing ◽  
Plant Spacing ◽  
Agricultural Experiment Station ◽  
Psophocarpus Tetragonolobus ◽  
Experiment Station ◽  
Agricultural Experiment

The effect of plant spacing on growth and yield of winged bean (Psophocarpus tetragonolobus (L.) D.C.) cultivar Chimbu was evaluated at Guam Agricultural Experiment Station. Plant spacings included 12.5, 25.0, 50.0 and 75.0 cm within-row at the same between-row spacing of 1.22 m (equivalent to 13,333, 20,000, 40,000 and 80,000 plants/ha, respectively). Days to first flower in closest spacing (12.5 cm) was significantly delayed 8 days longer than that from widest spacing (75 cm). Wider spacings of 50 and 75 cm produced higher numbers of basal branches (3.6 and 3.8, respectively) and green pods per plant (65.3 and 83.3, respectively) than closer spacings of 12.5 and 25 cm. For yields both of green pod and dry seed the optimum spacings were plant spacings of 50 and 75 cm. The result of higher yields indicated that cultivar Chimbu compensated for wider spacings by producing higher numbers of basal branches and green pods and larger green pods than at closer spacings.

scholarly journals Use of Neem-Based and Bacillus Thuringiensis Foliar Sprays to Control Colorado Potato Beetle on Potatoes, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 133-133
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Potato Leafhopper ◽  
Plant Spacing ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Hollow Cone ◽  
Potato Beetle ◽  
Randomized Complete Block Design ◽  
Compressed Gas ◽  
Agricultural Experiment

Abstract Potatoes were planted on 15 Apr at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of a 25 ft row bordered on each side by an untreated guard row, replicated 4 times in a randomized complete block design. Plant spacing was 10 inches between plants with 36 inches between rows. Sprays to control CPB were applied on the dates indicated in the table. On 15 and 22 Jun, the Novodor treatment was sprayed with Asana XL (0.04 lb AI) due to the presence of CPB large larvae and Fl adults. From 15 Jun on, Cygon 400 (0.25 lb AI) was added to the ATI 720 treatments to control potato leafhopper (Empoasca fabae). Sprays were applied with a propane compressed gas backpack sprayer using a 3 nozzle hollow cone (D4—5) boom and delivering 60 gal water/acre at 40 psi.

scholarly journals Foliar Sprays for Insect Control in Tomatoes, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 154-154
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Evaluation Criteria ◽  
Insect Control ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Hollow Cone ◽  
Randomized Complete Block Design ◽  
Agricultural Experiment ◽  
Living Leaf ◽  
Marketable Fruit

Abstract Tomatoes were transplanted on 23 Jul at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of a 25 ft. row, bordered on each side by an untreated guard row, and replicated 4 times in a randomized, complete block design. Spacing was 5 ft. between rows. Sprays were applied weekly beginning 20 Aug through 23 Sep using a 3 nozzle hollow cone boom backpack sprayer delivering 45 gal water/acre at 40 psi. Evaluation criteria consisted of counts of new or living leaf mines present on five marked plants/plot on the dates indicated in the table, and number of marketable fruit from the same five plants harvested on 8 and 22 Sep.

scholarly journals Use of Fipronil 80Wg Foliar Sprays for Insect Control in Potatoes, Spring, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 136-136
Author(s):  
John Speese
Keyword(s):  
Block Design ◽  
Evaluation Criteria ◽  
Insect Control ◽  
Life Stages ◽  
Eastern Shore ◽  
Agricultural Experiment Station ◽  
Foliar Sprays ◽  
Randomized Complete Block Design ◽  
Compressed Gas ◽  
Agricultural Experiment

Abstract Potatoes were planted on 16 Apr at the Eastern Shore Agricultural Experiment Station, Painter, VA. Each plot consisted of four 25 ft. long rows, replicated 4 times in a randomized, complete block design. Sprays were applied beginning on 17 May through 23 Jun using a propane compressed gas back pack sprayer delivering 40 gal water/acre at 40 psi. A total of three Fipronil 80WG applications was made every two weeks, and Asana XL + PBO was applied weekly. Evaluation criteria consisted of counts of all CPB life stages present on 5 randomly chosen stems/plot 3 or 4, 7, and 14 days after each Fipronil 80WG application. Aphids and leafhoppers were sampled on 10 randomly picked leaves/plot on the dates indicated, and estimates were taken on hopper burn and defoliation. The plots were harvested and graded to determine yields.

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