scholarly journals Evaluation of Insecticides for Onion Thrips Control on Dry Onion, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 145-146
Author(s):  
R. F. L Mau ◽  
L. R. Gusukuma-Minuto ◽  
R. S. Shimabuku
Keyword(s):  
Carbon Dioxide ◽  
Additional Treatment ◽  
Research Station ◽  
Plant Spacing ◽  
Onion Thrips ◽  
Compressed Carbon Dioxide ◽  
Set Up

Abstract The insecticides were evaluated at the Kula Research Station, Maui Agricultural Park, from June to September. The field was set up in a RCB design with six treatments and four replications (blocks). Each treatment plot consisted of four rows of plants planted at 8 in. between-plant spacing. Each row consisted of 45 plants. Seedlings were transplanted into the field on 17 Jun. Treatments were applied using a compressed carbon dioxide sprayer at 60 psi and 100 gpa. Two twin jet nozzles (TJ-6502) were used per two rows. Applications of Warrior at 0.02 and 0.03 lb. (AI)/acre, Lannate, and Ammo were made at 7-day intervals on 16, 23, 30 July, 6, 13, 20 Aug for a total of six applications. An additional treatment of Warrior @ 0.03 lb. (AI)/acre was made when thrips numbers exceeded 3 thrips/plant on 23 Jul, 6 and 20 Aug.

Onion Thrips Management on Dry Onion, 1996

1998 ◽  
Vol 23 (1) ◽  
pp. 112-113 ◽  
Author(s):  
R. F. L. Mau ◽  
L. R. Gusukuma-Minuto ◽  
R. S. Shimabuku
Keyword(s):  
Research Station ◽  
Plant Spacing ◽  
Onion Thrips ◽  
Jet Nozzle ◽  
Set Up

Abstract The insecticides were evaluated at the Kula Research Station, Maui Agricultural Park. The field was set up in a RCB design with nine treatments and four replications (blocks). Each treatment plot consisted of four rows of plants planted at 8 inch between plant spacing. Each row consisted of 45 plants. Seedlings were transplanted into the field on 26 Sep. Treatments were applied using a compressed CO2 sprayer at 60 psi and 100 gpa. Silwet L-77 surfactant was used at a rate of 0.0625% v/v. One twin-jet nozzle (TJ-6502) was used per row. Treatments were applied at 7-day intervals. The first treatment was made 5 weeks after transplanting. A total of five applications were made (2, 12, 19,26 Nov, and 3 Dec).

scholarly journals Evaluation of an Igr Insecticide, Rh-2485, for Control of Dbm and other Caterpillars on Head Cabbage, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 104-105
Author(s):  
R.F.L. Mau ◽  
L. R. Gusukuma-Minuto ◽  
R. S. Shimabuku
Keyword(s):  
Bacillus Thuringiensis ◽  
Resistance Management ◽  
Research Station ◽  
Plant Spacing ◽  
Hollow Cone ◽  
Single Row ◽  
Management Protocol ◽  
Set Up ◽  
The University ◽  
Head Cabbage

Abstract The insecticides were evaluated at the Kula Research Station, Maui Agricultural Park, from April to June. The field was set up in a RCB design with five treatments and four replications (blocks). Each treatment plot consisted of a single row of cabbage planted at 18 in. between plant spacing. Treatments were applied using a CO2 backpack sprayer set at 60 psi with an output of 100 gpa. One hollow cone nozzle (TX-26) was used per row The first treatment was applied five days after transplanting into the field on 23 Apr. Subsequently, six weekly applications were made until the week before harvest on the following dates: 30 Apr, 7, 14, 21, 28 May, 4 Jun. The treated check involved application of Bacillus thuringiensis aizawai (BTA) or Proclaim, using the University of Hawaii DBM resistance management protocol. The BTA product used was Mattach which was applied at 2.0 qt/acre on 23, 30 Apr, 7, 14 May. Proclaim 0.15EC was applied at 6.0 oz/acre on 21 and 28 May.

scholarly journals Insecticide Efficacy Against Dbm, 1995

1997 ◽  
Vol 22 (1) ◽  
pp. 97-98
Author(s):  
R. F. L Mau ◽  
L. R. Gusukuma-Minuto ◽  
R. S. Shimabuku ◽  
K. W. Dunster
Keyword(s):  
Field Size ◽  
Row Spacing ◽  
Research Station ◽  
Plant Spacing ◽  
Total Field ◽  
Hollow Cone ◽  
Single Row ◽  
Insecticide Efficacy ◽  
Set Up

Abstract Three insecticides were evaluated at the Kula Research Station, Maui Agricultural Park, from July to September. The field was set up in a RCB design with five treatments and four replications (blocks). Each treatment plot consisted of a single row of cabbage planted at 18 inch between plant spacing. Treatment plots in each block were separated by a 24 inch row spacing. Blocks were separated by a 36 inch spacing. Total field size was 68 ft. by 70 ft. Treatments were applied using a CO2 backpack sprayer set at 60 psi with an output of 100 gpa. One hollow cone nozzle (TX-26) was used per row. The first treatment was applied one week after transplanting into the field on 18 Jul. Subsequently, six applications were made weekly until the week before harvest on the following dates: 25 Jul, 1, 8, 15, 22, and 29 Aug.

scholarly journals Field Evaluation of Fipronil for Dbm Control, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 101-102
Author(s):  
R.F.L. Mau ◽  
L. R. Gusukuma-Minuto ◽  
R. S. Shimabuku
Keyword(s):  
Specific Treatment ◽  
Field Evaluation ◽  
Row Spacing ◽  
Research Station ◽  
Plant Spacing ◽  
Set Up

Abstract The insecticides were evaluated at the Kula Research Station, Maui Agricultural Park, from June to August. The field was set up in a RCB design with six treatments and four replications (blocks). Each treatment plot measured 70 ft by 7.5 ft. It consisted of four rows of cabbage on 36 in. centers and 18 in. in-row spacing. Adjacent rows were offset to allow equidistant plant spacing between rows. Treatments were applied using a tractor mounted with a PTO driven spray pump equipped with a 30 ft. boom. The boom was set with three banks nozzles that coincided with row spacing. Each group of nozzles had its own line from the main tank, therefore, spray output to specific treatment plots could be easily controlled by the sprayer operator. Treatments were applied at 45 psi with an output of 125 gpa. One TJ 60-8006 nozzle was used per row. The first treatment was made on 2 Jul, 1 day after transplanting. Subsequent applications were made on the following dates: 8, 16, 23, 30 Jul, 6, 13 Aug.

scholarly journals Seed Yam Production Using High-Quality Minitubers Derived from Plants Established with Vine Cuttings

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 978
Author(s):  
Beatrice Aighewi ◽  
Norbert Maroya ◽  
Lava Kumar ◽  
Morufat Balogun ◽  
Daniel Aihebhoria ◽  
...  
Keyword(s):  
Block Design ◽  
Research Station ◽  
International Institute ◽  
Tropical Agriculture ◽  
Single Node ◽  
Cropping Season ◽  
Randomized Complete Block Design ◽  
The World ◽  
Cropping Seasons ◽  
Set Up

Yam (Dioscorea spp.) is a valuable food security crop in West Africa, where 92% of the world production occurs. The availability of quality seed tubers for increased productivity is a major challenge. In this study, minitubers weighing 1, 3, and 5 g produced from virus-free single-node vine cuttings of two improved yam varieties (Asiedu and Kpamyo) growing in an aeroponics system were assessed for suitability in seed production at a population of 100,000 plants ha−1. A 3 × 2 factorial experiment with randomized complete block design and three replications was set up during the cropping seasons of 2017 to 2019 at the International Institute of Tropical Agriculture Research Station in Kubwa, Abuja, Nigeria. Results showed field establishments of 87%–97.8%. Yields differed with minituber size, variety, and cropping season; the highest was 31.2 t ha−1 in 2019 and the lowest, 10 t ha−1 in 2018 from 5 and 1 g Kpamyo minitubers, respectively. The estimated number of tubers produced per hectare by 1, 3, and 5 g minitubers was 101,296, 112,592, and 130,555, with mean weights per stand of 159.2, 187.3, and 249.4 g, respectively. We recommend using less than 6 g minitubers for seed yam production due to their high multiplication rates.

Selective Adsorption and Separation of Organic Dyes with Spherical Polyelectrolyte Brushes and Compressed Carbon Dioxide

2017 ◽  
Vol 23 (55) ◽  
pp. 13696-13703 ◽  
Author(s):  
Rui Zhang ◽  
Zhenchuan Yu ◽  
Lei Wang ◽  
Qizhe Shen ◽  
Xiaoyan Hou ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Organic Dyes ◽  
Selective Adsorption ◽  
Polyelectrolyte Brushes ◽  
Compressed Carbon Dioxide ◽  
Spherical Polyelectrolyte Brushes
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