The Army Worm

1897 ◽  
Vol 44 (1127supp) ◽  
pp. 18019-18020
Author(s):  
Clarence M. Weed
Keyword(s):  
2018 ◽  
Vol 29 (5) ◽  
pp. 213-214 ◽  
Author(s):  
Graham Matthews

The author introduces the next three articles on the invasion of Fall Army Worm into Sub-Saharan Africa and Asia describing how the pest spreads, the damage it causes and approaches to its control.


Author(s):  
P. S. Ajiningrum ◽  
I. A. K. Pramushinta

Red spinach (Alternanthera amoena) is one of the vegetable commodities that many people in demand for consumption because of its high nutritional content. Efforts to increase the production of red spinach often experience various obstacles. The main obstacle that limits the productivity of red spinach in the tropics is the number of Plant Disturbing Organisms  in the form of pests and potential diseases that can attack and decrease the production of spinach. One of the pests that often attack spinach is the existence of army worm (Spodoptera litura F.). Therefore, farmers need a way to eradicate the pest. This research is experimental using Random Complete Group. The data obtained were analyzed with variant analysis (ANOVA) in one direction and continued with LSD (Least Significant Different) test. Provision of botanical insecticide done by spraying the extract of leaves and seeds mimba with concentration dose 0%, 5%, 10% and 15%. In the final analysis of mortality data of army worm (Spodoptera litura F.) treated with mimba leaf extract obtained significant value of 76.263 at a significant level of 0.05 so it can be concluded that there is influence of mimba leaf extract on mortality of army worm. In the final analysis of mortality data of army worm (Spodoptera litura F.) treated with mimba seed extract obtained significant value of 78.625 at a significant level of 0.05 so it can be concluded that there is an effect of mimba seeds extract on mortality army worm.   Keywords: mimba leaf extract,  mimba seed extract, red spinach (Alternanthera amoena), army worm (Spodoptera litura F.), botanical insecticide


2021 ◽  
Vol 83 (2) ◽  
pp. 219-222
Author(s):  
D Gouthami Bai ◽  
P Seetha Ramtj ◽  
S Dhljrtja ◽  
M Suresh

Heterocycles ◽  
1982 ◽  
Vol 17 (1) ◽  
pp. 67 ◽  
Author(s):  
Koji Nakanishi ◽  
Hung-wen Liu ◽  
Isao Kubo
Keyword(s):  

1987 ◽  
Vol 119 (4) ◽  
pp. 365-369 ◽  
Author(s):  
G.K. Bracken

AbstractCanola plants in 0.84-m2 field plots were exposed to 120 bertha army worm larvae per square metre, beginning at mid 5th instar, for increasing durations. Yield loss increased with feeding duration throughout the feeding period whereas the proportion of pods damaged increased rapidly at first then leveled at 45%. Pod damage was negatively correlated with plot yield but the regression was not statistically significant. More seed shelled from plants with damaged pods than from plants with no pod damage under field conditions simulating drying in the swath. Seed from damaged pods had greater proportions of green and broken seeds causing lower seed grade and these defects were evident in seed from plots with 21% or more damaged pods. Although control measures for bertha armyworm should not be undertaken before pod damage is observed, a control decision should be made before 20% of the pods are damaged.


1944 ◽  
Vol 10 (1) ◽  
pp. 2-6 ◽  
Author(s):  
W. Victor Harris
Keyword(s):  

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