15- Vegetable Disease:

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=100 BGCOLOR="#CCCCFF" TEXT="#080000" bgproperties="fixed" background="06200640egdysm.jpg"> <div> <B>|     </B><A HREF="index.htm" TARGET="_top" TITLE="_"><U><B>home</B></U></A></div> <div> <A HREF="id74.htm" TARGET="_top" TITLE="1 Mycology Research:"><U>1- Mycology Research:</U></A>   |   <A HREF="id75.htm" TARGET="_top" TITLE="2 Virology and Mycoplasma:"><U>2- Virology and Mycoplasma:</U></A>   |   <A HREF="id76.htm" TARGET="_top" TITLE="3 Nematology Research:"><U>3- Nematology Research:</U></A>   |   <A HREF="id77.htm" TARGET="_top" TITLE="4 Bacteriology Research:"><U>4- Bacteriology Research:</U></A>   |   <A HREF="id79.htm" TARGET="_top" TITLE="5Post Harvest Disease:"><U>5-Post Harvest Disease:</U></A>   |   <A HREF="id116.htm" TARGET="_top" TITLE="6 Integrated Control Research:"><U>6- Integrated Control Research:</U></A>   |   <A HREF="id83.htm" TARGET="_top" TITLE="7 Seed Pathology:"><U>7- Seed Pathology:</U></A>   |   <A HREF="id85.htm" TARGET="_top" TITLE="8 Cereal Disease:"><U>8- Cereal Disease:</U></A>   |   <A HREF="id88.htm" TARGET="_top" TITLE="9 Rice Disease:"><U>9- Rice Disease:</U></A>   |   <A HREF="id90.htm" TARGET="_top" TITLE="10 Cotton and Fiber Crop Disease:"><U>10- Cotton and Fiber Crop Disease:</U></A>   |   <A HREF="id92.htm" TARGET="_top" TITLE="11 Maize and Sugar Crop Disease:"><U>11- Maize and Sugar Crop Disease:</U></A>   |   <A HREF="id94.htm" TARGET="_top" TITLE="12 Food Legume and Forage Crop Disease:"><U>12- Food Legume and Forage Crop Disease:</U></A>   |   <A HREF="id96.htm" TARGET="_top" TITLE="13 Onion, Garlic and Oil Crop Disease:"><U>13- Onion, Garlic and Oil Crop Disease:</U></A>   |   <A HREF="id98.htm" TARGET="_top" TITLE="14 Fruit Disease:"><U>14- Fruit Disease:</U></A>   |   <B>15- Vegetable Disease:</B>   |   <A HREF="id101.htm" TARGET="_top" TITLE="16 Ornamental Plant Disease:"><U>16- Ornamental Plant Disease:</U></A>   |   <A HREF="id119.htm" TARGET="_top" TITLE="1 Information and Computer Center:"><U>1- Information and Computer Center:</U></A>   |   <A HREF="id105.htm" TARGET="_top" TITLE="2 Fingerprinting Lab.:"><U>2- Fingerprinting  Lab.:</U></A>   |   <A HREF="id107.htm" TARGET="_top" TITLE="3 Central Lab.:"><U>3- Central Lab.:</U></A>   |   <A HREF="id109.htm" TARGET="_top" TITLE="4 Disease Forecast Unit:"><U>4- Disease Forecast Unit:</U></A>   |   <A HREF="id121.htm" TARGET="_top" TITLE="5 Cell Manipulation Lab.:"><U>5- Cell Manipulation Lab.:</U></A>   |   <A HREF="id123.htm" TARGET="_top" TITLE="6 Colonal Lab.:"><U>6- Colonal Lab.:</U></A></div> <div> </div> </td> </tr><tr> <td valign="top" width=200 BGCOLOR="#0000BF" TEXT="#F7F7FF"> <bR> </td> <td valign="top" height=380 BGCOLOR="#CCFFFF" TEXT="#080000"> <div> <I><B>15- Vegetable Disease:</B></I></div> <div> <B>    A- </B><A HREF="id99.htm" TARGET="_top" TITLE="15 Vegetable Disease:"><U><B>Section Staff</B></U></A><B>:</B></div> <div> <B>- Number of section staff is </B><B>41</B><B> members.</B></div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>Prof. Dr. Abel Aziz Sayed Ahmed</B></div> <div> <A HREF="mailto:ppathri@go.com" TARGET="_top" TITLE="mailto:ppathri@go.com"><U><B>ppathri@go.com</B></U></A></div> <bR> <div> <B><IMG BORDER="0" SRC="Symb075c00b700f066003300.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Section members</B></div> <bR> <div> <B>B- Activities:</B></div> <div> <I><B><IMG BORDER="0" SRC="Aria006c002d00f0ff000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">- Surveying and identifying diseases attacking vegetable of economic impact, as powdery and downy mildew in cucurbits, Ascochyta blight in peas, and late blight in potatoes and tomatoes.</B></I></div> <div> <B>- Researching the efficacy and rates of pesticides for disease management.</B></div> <div> <B><IMG BORDER="0" SRC="Aria006c002d00f0ff000000.gif" HEIGHT="16" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">- Cooperating with the Horticulture Research Institute in breeding for disease resistance.</B></div> <div> <B>C- Achievement:</B></div> <div> <B>Tomato is one of the most economically important vegetables to Egypt. PPATHRI is involved with screening tomato cultivars for resistance to </B><I><B>Verticilium</B></I><B> and Fusarium wilts considered the principal diseases. Recent work has identified three highly resistant cultivars, `Flora Dade', `Castle Rock' and `Luxor'. The variety `Castle Rock' has been adopted commercially and covers approximately 3.000 feddans.</B></div> <div> <B>Collar rot, caused by the pathogen </B><I><B>Alternaria solani,</B></I><B> is another economically serious disease affecting tomato transplants. Research efforts have resulted in a fungicide spray regime, now adopted by commercial producers, to minimize seedling infection.</B></div> <div> <B>The fungus </B><I><B>Phytophthora infestans, </B></I><B>has always been a serious threat to potato and tomato production in Egypt and around the world. Historically, it has devastated entire crops and, in recent times, been responsible for losses up to 50% Chemical control of the disease, late blight, has been achieved using systemic fungicides where growing conditions favor the fungus and relative humidity is high. Today, losses do not usually exceed 5% as farmers regularly apply systemic and conventional fungicides. In 1986, even before current control levels were achieved, all the provinces growing potato were severely infected with late blight and the average yield was only 1 to 3 tons per feddan. However, in Menoufia governorate, producers in summer potato plantations routinely used a systemic fungicide before the disease outbreak and yield ranged between 10 to 12 tons per feddan. </B></div> <div> <B>In the past decade, the productivity of vegetables has increased markedly due to developing resistant cultivars such as the tomato varieties mentioned earlier, watermelon resistance to Fusarium wilt including, Egyptian bred `Giza 1' and `Giza 2', and the strawberry varieties `Chandler' and 'Douglas' resistant to fruit rot disease. Advances with specific fungicide applications have increased yields by 50 to 70% and sometimes more. Two specific examples of disease problems now successfully controlled by fungicides are cucurbit powdery mildew and  Ascochyta blight of peas.</B></div> <div> <A HREF="id100_m.htm" TITLE="15 Vegetable Disease:"><U><B><IMG SRC="1ca5a280.gif" border=0 width="90" height="40" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></U></A></div> <DIV ALIGN="LEFT"></DIV> <div> <A HREF="index.htm" TARGET="_top" TITLE="_"><U><B><IMG SRC="1ae1e1e0.gif" border=0 width="30" height="30" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></U></A></div> <div> <B> </B><FONT SIZE="3" COLOR="#FF0033" FACE="Arial Black" ><B>Back</B></FONT><B> </B><FONT SIZE="3" COLOR="#FF0000" FACE="Arial Black" ><B>To</B></FONT><B> Home</B></div> <bR> </td> </tr></table></body>