caa a22 4500 386375232 CHVBK 20180307112015.0 cr unu---uuuuu 161130e198908 xx s 000 0 eng 10.1017/S1742758400021573 doi S1742758400021573 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400021573 Life tables for american bollworm, Heliothis armigera Hubner on four species of cotton under field conditions [Elektronische Daten] —Life table studies of American bollworm Heliothis armigera Hubner on four species of cotton revealed that maximum mortality in the population occurred early in the life cycle. Predation and dispersal accounted for maximum mortality of early instars, whereas migration and unknown reasons accounted for maximum mortality of late instars. Considering the life tables on four varieties of cotton, the loss of population during the first instar was significantly high in K8 and TKHe 44 whereas in Suvin and MCU 9 the loss was less. Copyright © ICIPE 1989 Life table nationallicence mortality nationallicence cohort nationallicence survivorship nationallicence predation nationallicence dispersal nationallicence Nanthagopal R. Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India Uthamasamy S. Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India International Journal of Tropical Insect Science Cambridge University Press 10/4(1989-08), 521-530 1742-7584 10:4<521 1989 10 JTI https://doi.org/10.1017/S1742758400021573 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400021573 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nanthagopal R. Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India NATIONALLICENCE 700 1- Uthamasamy S. Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 10/4(1989-08), 521-530 1742-7584 10:4<521 1989 10 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge