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United States Department of Agriculture

Agricultural Research Service

Title: Straighthead with Flag Leaf Macro and Micro-Elements in Rice

Authors
item Yan, Wengui
item Gibbons, James - UA RREC
item Cartwright, Richard - UALR
item Mcnew, Ronnie - UA FAYETTEVILLE
item Slaton, Nathan - UA FAYETTEVILLE

Submitted to: American Society of Agronomy Branch Meeting
Publication Type: Abstract Only
Publication Acceptance Date: May 25, 2005
Publication Date: June 19, 2005
Citation: Yan, W., Gibbons, J.W., Cartwright, R.D., Mcnew, R.W., Slaton, N.A. 2006. Straighthead with flag leaf macro- and micro-elements in rice. American Society of Agronomy Branch Meeting. 2005. CDROM.

Technical Abstract: Straighthead is a physiological disease of rice resulting in sterile panicles and the exact cause of straighthead is unknown. Nineteen cultivars rated from resistant to susceptible to straighthead were studied in 2004 in 3 environments; clean soil with no straighthead history, monosodium methanearsonate (MSMA) treated soil for inducing straighthead, and a farm field with straighthead history. Correlation was analyzed on cultivar mean derived from 12 observations. Grain yield was greatly reduced (r=-0.6), and maturity was delayed (r=0.5) by straighthead. Severe straighthead was significantly associated with less content of S (r=-0.5) and Cu (r=-0.6) in flag leaves. Other correlations such as straighthead with P, K, Ca, Mg, Na, Fe, Mn, Zn, and B were not significant in this study.

Last Modified: 10/1/2014
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