Full text: Proceedings of the international symposium on remote sensing for observation and inventory of earth resources and the endangered environment (Volume 3)

     
    
  
    
   
    
   
    
   
  
  
  
  
  
  
  
     
Zusammenfassung 
Es bestehen klare Zusammenhänge zwischen dem Grauwert und dern mikrodensi- 
ndte tometrischen Messungen einerseits und dem bereinigten Zuckerertrag und der 
Zystenzahl andererseits. Der Meßschwellenwert erfaßt nicht die niedrigen 
Werte, so daß ein geringer Nematodenbefall in den untersuchten Versuchen 
nicht gemessen werden konnte. Um darüber genauere Aussagen machen zu können, 
sind weitere Untersuchungen nötig. 
nen 
It. 
"t 
id- Literatur 
üt 
tie 1. B. Weischer, personliche Mitteilung, 1978 
2. R. Dern, personliche Mitteilung, 1978 
° mit 
nen 
piolo- Abstract 
lerer- 
r Ka- 
die 
er be- USE OF REMOTE SENSING IN THE CONTROL OF NEMATODES IN SUGAR BEETS 
len bei 
lten, Karl-Heinz Schneider. Hermann Bleiholder and Falk R. Rittig 
rge- BASF Aktiengesellschaft, Agricultural Research Station, 
6703 Limburgerhof/Palatinate, Federal Republic of Germany 
rtrag The use of remote sensing to check the effect of nematicides in sugar 
af die beets was investigated. False-color infrared photographs taken from a 
den helicopter were densitometrically measured in different spectral ranges 
n Tage using various instruments. Correlation between the data evaluated by 
simple biometric procedures and the nematode infestation. the nematicidal 
effect and the yield of sugar beets reveals a distinct relationship. 
Densitometric evaluation of aerial photographs makes it possible to 
monitor the success of nematicide treatments and presents a valuable 
addition to usual trial evaluation.
	        
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