scholarly journals Moths of Economic Importance in the Maize and Sugar Beet Production

Author(s):  
Renata Bažok ◽  
Zrinka Drmić ◽  
Maja Čačija ◽  
Martina Mrganić ◽  
Helena Virić Gašparić ◽  
...  
1947 ◽  
Vol 37 (4) ◽  
pp. 301-310 ◽  
Author(s):  
R. Hull ◽  
Marion Watson

The effect of beet yellows virus on the yield of sugar beet was tested in the presence and absence of various fertilizers and farmyard manure. In general the manorial treatments increased the root and sugar yields of both infected and healthy plants, but the losses caused by infection increased proportionally as the mean yields increased. When the effects of nitrogen, farmyard manure and salt on mean yield were large, the losses caused by infection were increased more than proportionally.The fertilizers had little effect in varying the symptoms of the disease. There was some indication that the red colour associated with some varieties of sugar beet was intensified by deficiency of phosphate and potash.The effect of fertilizers on rate of spread of infection was variable, and again appeared to depend largely upon the magnitude of the fertilizer effects on mean yield. Nitrogen, phosphate and potash occasionally had positive effects, and salt had a fairly consistent negative effect. None of the effects appeared to be of any economic importance.


1976 ◽  
Vol 8 (6) ◽  
pp. 328-334 ◽  
Author(s):  
F C Peacock

Mai (1964) considered that there were less than 100 nematode diseases of serious proportions, but many more causing less obvious or severe damage were still unrecognized. A rather general account is here given of the role of nematodes in plant disease, using as examples nematodes and crops of economic importance–-including cyst-forming, root-knot, burrowing and reniform nematodes on crops such as potatoes, sugar beet, temperate cereals, citrus, bananas, cotton and soya beans.


2001 ◽  
Vol 36 (1) ◽  
pp. 35-46 ◽  
Author(s):  
Khalid Fares ◽  
C. M. G. C. Renard ◽  
Qamar R'Zina ◽  
Jean-Francois Thibault
Keyword(s):  

1998 ◽  
Vol 23 (4) ◽  
pp. 347-353
Author(s):  
N. B. Kift ◽  
F. A. Mellon ◽  
A. M. Dewar ◽  
A. F. G. Dixon
Keyword(s):  

1991 ◽  
Vol 83 (1) ◽  
pp. 7-16 ◽  
Author(s):  
Christina Lind ◽  
Christer Hallden ◽  
Ian M. Moller
Keyword(s):  

1995 ◽  
Vol 94 (2) ◽  
pp. 342-350 ◽  
Author(s):  
Steffen Lenzner ◽  
Kurt Zoglauer ◽  
Otto Schieder

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