Nutritional Disorders Part 1 Diagnostics Whipker · 2018. 8. 9. · Nutritional Disorders: Part 1 A...
Transcript of Nutritional Disorders Part 1 Diagnostics Whipker · 2018. 8. 9. · Nutritional Disorders: Part 1 A...
3/20/13&
1&
Brian Whipker
Nutritional Disorders: Part 1 A Diagnostic Process
Plants&Gone&Bad&
What%is%Up%Here?%
• Problems&can&be:&– Disease&– Insect&– Nutri<onal&– Physiological&– Or#a#combina+on#
• Growing&requires&a&systema<c&approach&to&problem&solving&
DIAGNOSTICS:&A&Systema<c&Approach&
Diagnos(c*Process:**A*Systema(c*Approach&
Petunia&Nutrient&Disorders&
Key&Steps&–&Key&Ques<ons&
How&
?&
What?&(PaPern)&
Where?&(Distribu<on)&
When?&(Time)&
3/20/13&
2&
Key&Steps&–&Key&Ques<ons&
How&
What?&(PaPern)&
Where?&(Distribu<on)&
When?&(Time)&
Key&Steps:&What&• What&do&the&symptoms&look&like?&
Necrosis%Growth% Chlorosis% Spo6ng%
Key&Steps:&What&• What&do&the&symptoms&look&like?&
– What&is&the&paPern&on&the&leaves?&
Is*the*pa7ern*similar*if*folded?*
Key&Steps:&What&• What&do&the&symptoms&look&like?&
– What&is&the&paPern&on&the&leaves?&
Is*the*pa7ern*similar*if*folded?*
No*=*
Bio(c*
Yes*=*
Abio(c*
Problem*Loca(on*–**pa7ern*on*the*plant?*
Roots/%Crown%
Stem%
Flowers%
Leaves%
3/20/13&
3&
Problem*Loca(on*–**
****Plant*Nutri(on#
(Mobile)#
%(Par(ally*Mobile)#
(Immobile)#%YOUNG& OLD
BOTH Problem*Loca(on*–*Plant*Nutri(on#
%Young#
%Old#
=Fe*=Mn#
%A%Ca%%%=B#
%=Zn**=Cu#
-H20
%=Mo#%=S#
%=N***=P#
%=Mg# +EC***+B#%+Mn/+Fe#%=K#
Key&Steps:&What&
• What&do&the&symptoms&look&like?&– What&is&the&paPern?&– What&problems&occur&with&the&plant?&
What#to#look#out#for &&
• Experience&• Technical&guides&(Ecke,%Dümmen,%Fides,%Syngenta)%• Podcasts&@&Greenhouse&Grower&• Web&searches&• Reference&books&
Key&Steps&–&Key&Ques<ons&
How&
What?&(PaPern)&
Where?&(Distribu<on)&
When?&(Time)&
Key&Steps:&Where&
• Where&are&the&symptoms?&– Distribu<on&within&the&greenhouse&/&bed?&
Living%Factors%(Pathogens*or**
Insects)*
NonAUniform%
DistribuNon&
3/20/13&
4&
ScaOered%Plants%
Uniform%
NonALiving%Factors%(Mechanical,*
Physical,*or*Chemical)%
DistribuNon&
DistribuNon:%All%Plants%
Key&Steps&–&Key&Ques<ons&
How&
What?&(PaPern)&
Where?&(Distribu<on)&
When?&(Time)&
Key&Steps:&When&
• When&did&the&symptoms&appear?&– Quickly?&&&&&&&(Within&1&to&4&days)&
– Gradually?&&&&(Over&1&to&4&weeks)&&
Key&Steps:&When&
• When&did&the&symptoms&appear?&– Quickly?&&&&&&&(Within&1&to&4&days)&
– Gradually?&&&&(Over&1&to&4&weeks)&&
Spray%Phyto% Water%Stress%
3/20/13&
5&
Key&Steps:&When&
• When&did&the&symptoms&appear?&– Quickly?&&&&&&&(Within&1&to&4&days)&
– Gradually?&&&&(Over&1&to&4&weeks)&&
Ini(al:*Slight*interveinal*
chlorosis*of*recently*
matured*leaf*
High%pH%(Iron%Deficiency)&
Ini(al:*Slight*interveinal*
chlorosis*of*recently*
matured*leaf*
Moderate:*Interveinal*chlorosis*
more*pronounced,*
spread*to*other*
leaves*
High%pH%(Iron%Deficiency)&
Ini(al:*Slight*interveinal*
chlorosis*of*recently*
matured*leaf*
Moderate:*Interveinal*chlorosis*
more*pronounced,*
spread*to*other*
leaves*
Advanced:*Bleached*(white)*
interveinal**chlorosis**
High%pH%(Iron%Deficiency)&
Key&Steps:&When&Fast%
• Chemical&phytotoxicity&
• Herbicide&dri[&• Air&pollu<on&• Environmental&stress&
• Temperature&extremes&
• Nutri<onal&toxicity&
Moderate%
• Environmental&–Ca&• Botry+s#
Gradual%
• Diseases&• Insects&• Nutri<onal&
Key&Steps&–&Key&Ques<ons&
How&
What?&(PaPern)&
Where?&(Distribu<on)&
When?&(Time)&
3/20/13&
6&
Partnering Universities