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Journal of Scientific and Industrial Research (JSIR) >
JSIR Vol.66 [2007] >
JSIR Vol.66(11) [November 2007] >
| Title: | Simulation of economic injury levels for leaf folder (Cnaphalocrocis medinalis Guenee) on rice (Oryza sativa L.) |
| Authors: | Satish, D
Chander, Subhash
Reji, G |
| Keywords: | Economic injury level
Leaf folder
Rice
Simulation model |
| Issue Date: | Nov-2007 |
| Publisher: | CSIR |
| IPC Code: | A01Q11/00 |
| Abstract: | Leaf folder incidence on rice (Pusa Sugandha 3) was 1.2-20.5% folded leaves with highest infestation between 45-55 days
after transplanting (DAT). Two spray applications with endosulfan 35 EC at 50 and 70 DAT were found optimum for preventing
yield loss (26%) due to pest. Leaf folder damage was calibrated and validated through a generic crop growth model, InfoCrop.
Validated model was used for simulating economic injury levels (EILs) of the pest. Simulated EIL was found to be 9, 11 and
12% folded leaves at 50 DAT and 12, 15 and 14% at 70 DAT during 2003, 2004 and 2005, respectively. Simulation models
could account for changes in weather, inputs and crop-pest interactions, and therefore, could be potential tools for formulating
site specific EILs for pests. |
| Page(s): | 905-911 |
| ISSN: | 0022-4456 |
| Source: | JSIR Vol.66(11) [November 2007]
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