eprintid: 4823
rev_number: 13
eprint_status: archive
userid: 14
dir: disk0/00/00/48/23
datestamp: 2011-12-13 08:49:47
lastmod: 2011-12-13 08:49:47
status_changed: 2011-12-13 08:49:47
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
creators_name: Butler, D R
creators_name: Wadia, K D R
creators_name: Jadhav, D R
icrisatcreators_name: Butler, D R
icrisatcreators_name: Wadia, K D R
icrisatcreators_name: Jadhav, D R
affiliation: ICRISAT(Patancheru)
country: India
title: Effects of leaf wetness and temperature on late leaf-spot infection of groundnut

ispublished: pub
subjects: s1.3
full_text_status: restricted
abstract: Experiments are described to quantify the effects of temperature and leaf wetness duration on infection of groundnut by Phaeoisariopsis personata. Temperature response curves for conidial germination and infection were similar, with optima close to 20°C and minimum and maximum temperatures of about 8°C and 34 C, respectively. The effect of temperature on infection between 15°C and 26°C was slight. Lesions developed only if the leaf wetness period exceeded about 20 h, and the total wetness period necessary for maximum infection exceeded 160 h. The number of lesions resulting from a fixed amount of inoculum was several times greater if leaves were exposed to alternate wet and dry periods (intermittent wetness), compared with continuous wetness. With intermittent wetness the length of the dry period had little effect on the number of lesions, providing it exceeded 2 h. The response curve relating total wetness periods to lesion density was an exponential asymptote.


date: 1994
date_type: published
publication: Plant Pathology
volume: 43
number: 1
publisher: Blackwell Publishing
pagerange: 112-120
refereed: TRUE
issn: 1365-3059
official_url: http://dx.doi.org/10.1111/j.1365-3059.1994.tb00560.x
related_url_url: http://scholar.google.co.in/scholar?as_q=%22Effects+of+leaf+wetness+and+temperature+on+late+leaf-spot+infection+of+groundnut%22&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=o
related_url_type: author
citation:   Butler, D R and Wadia, K D R and Jadhav, D R  (1994) Effects of leaf wetness and temperature on late leaf-spot infection of groundnut.  Plant Pathology, 43 (1).  pp. 112-120.  ISSN 1365-3059     
document_url: http://oar.icrisat.org/4823/1/Plant%20Pathology_43_112-120_1994.pdf