Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Acta Agriculture Scandinavica Section B-Soil & Plant Science
Year: 2008  |  Volume: 58  |  Issue: 2  |  Page No.: 176 - 181

Optimization of application of nitrogen fertilizers to increase the yield and improve the quality of Chinese cabbage heads

Gediminas Staugaitis, Pranas Vsikelis and Petras Rimantas Venskutonis    

Abstract: The study investigates the effects of nitrogen fertilizers on the characteristics of the autumn crop of Chinese cabbage. The rates applied varied from 0 to 225 kg ha-1 (N0, N45, N90, N135, N180, N225); the supply of phosphorus and potassium fertilizers was similar in the all trials, 90 and 150 kg ha-1, respectively. It was found that the optimum nitrogen fertilization rate for the autumn crop of Chinese cabbage was N135. In the case of lower nitrogen rates the yield decreased and the cabbage heads were smaller. Further increase in fertilizer rate (>N135) resulted in a higher percentage of non-standard cabbage heads, while the yield remained almost unchanged compared with N135. The total plant mass of cabbage crop fertilized with N135 was 76 t ha-1; plant residues constituted 33 t ha-1 (43% of the total mass). The yield of market quality cabbage heads was 30 t ha-1 (70% of all the heads produced); the rest of heads were loose, not formed or rot-infected. The optimal amount of total mineral nitrogen (the sum of nitrogen present in the 0-60 cm soil layer and the nitrogen supplied with fertilizers) before planting was 260 kg ha-1. When nitrogen rates were higher than N180 the quality of cabbage heads in terms of the content of vitamin C, nitrates, soluble solids, total solids and sugars decreased.

View Fulltext    |   Related Articles   |   Back
   
 
 
 
  Related Articles

 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility