Field Insecticide Trial Against Various Pests of Red Ginger, 1995

Red Ginger Extract

Prevention of Soil Borne Pests in Organic Edible Ginger

○ Background Production of organic ginger Zingiber officinale Roscoe, Japanese variety, is subject to serious economic loss from several soil borne pests. The plant parasitic root-knot nematode (RKN) Meloidogyne incognita is a persistent pest for ginger production in soils worldwide. Pathogenic bacteria Ralstonia solanacearum, which causes “bacterial wilt” of ginger, has become a serious threat...

Assessment of insecticide resistance in five insect pests attacking field and vegetable crops in Nicaragua.

Field populations of Hypothenemus hampei (Ferrari), Plutella xylostella (L.), Spodoptera exigua (Hübner), Helicoverpa zea (Boddie) and Bemisia tabaci (Gennadius) were tested for resistance to several insecticides commonly used in Nicariagua. Assays were conducted to estimate the LD50s or LC50s and the corresponding resistance ratios. A diagnostic concentration was used to discriminate between s...

Air War Against Pests

T. HE AIRPLANE holds a bright new hope in the farmers' uphill struggle with insects. Since 1922, when Department engineers and entomologists developed a practical method for dusting cottonfields with calcium arscnatc to protect the crop against the boll weevil, commercial airplane dusting has become routine, particularly in cultivated fields that spread over a wide area unbroken by trees or shr...

Effectiveness of a vaccine against red sea bream iridoviral disease in a field trial test.

Since 1990, red sea bream iridovirus (RSIV) has caused high mortalities in the summertime in cultured red sea bream Pagrus major in southwest Japan. To establish control measures for red sea bream iridoviral disease (RSIVD), the effectiveness of a formalin-killed viral vaccine was evaluated in a field trial. Two groups each consisting of 1000 juvenile red sea bream were either intraperitoneally...