Calibrating the leaf colour chart for need based fertilizer nitrogen management in different maize (Zea mays L.) genotypes

2011 ◽  
Vol 120 (2) ◽  
pp. 276-282 ◽  
Author(s):  
Varinderpal-Singh ◽  
Yadvinder-Singh ◽  
Bijay-Singh ◽  
H.S. Thind ◽  
Ajay Kumar ◽  
...  
Author(s):  
Shiva kumar ◽  
M.A. Basavanneppa ◽  
B.G. Koppalkar ◽  
M.R. Umesh ◽  
Ashok Kumar Gaddi

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