Record Details

Determination of multiple-species economic injury levels for rice insect pests

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Determination of multiple-species economic injury levels for rice insect pests
Not Available
 
Creator K. Selvaraj, Subhash Chander*, M. Sujithra
 
Subject Iso-loss curve Leaf folder Multi-pest EILs Planthoppers Stem borers a b s t r a c t Yield loss to damage functions were established to determine multiple-pest economic injury levels (EILs) on Pusa Basmati 1 rice (Oryza sativa L.) at different crop growth stages through field and pot experiments in 2009 and 2010. The yield loss to damage functions were derived for two-pest combinations of leaf folder, Cnaphalocrocis medinalis Guenée, and stem borers, Scirpophaga incertulas (Walker) and Sesamia inferens (Walker), at reproductive crop stage during 2009 and for leaf folder and planthoppers, Nilaparvata lugens (Stål.) and Sogatella furcifera Horvath, at vegetative crop stage, and planthoppers and stem borers
 
Description Not Available
Yield loss to damage functions were established to determine multiple-pest economic injury levels (EILs)
on Pusa Basmati 1 rice (Oryza sativa L.) at different crop growth stages through field and pot experiments
in 2009 and 2010. The yield loss to damage functions were derived for two-pest combinations of leaf
folder, Cnaphalocrocis medinalis Guenée, and stem borers, Scirpophaga incertulas (Walker) and Sesamia
inferens (Walker), at reproductive crop stage during 2009 and for leaf folder and planthoppers, Nilaparvata
lugens (Stål.) and Sogatella furcifera Horvath, at vegetative crop stage, and planthoppers and stem
borers at reproductive stage during 2010. Single-species as well as multi-species EILs were determined.
Across experiments, single-species EILs of leaf folder and stem borer ranged from 2.9e6.4% folded leaves
and 1.9e3.0% whiteheads, respectively, while that of planthoppers varied between 5.5 and 7.3 hoppers
per hill. Iso-loss equations, based on yield loss to damage functions, depicted various two-pest incidence
combinations which resulted in economic damage. These joint incidence combinations showed that,
although each pest was below its EIL, the combination of both pests inflicted economic damage. The
multi-pest EILs can be useful to monitor simultaneous occurrence of two-pest species thereby helping to
prevent yield losses.
Not Available
 
Date 2024-04-30T14:37:03Z
2024-04-30T14:37:03Z
2012-01-01
 
Type Research Paper
 
Identifier Selvaraj, K., Chander, S. and Sujithra, M. 2012. Determination of multi-species economic injury levels for rice insect pests. Crop Protection 32: 150-160.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/82464
 
Language English
 
Relation Not Available;
 
Publisher Elsevier