The biological basis of cultivation and storage of chinese cabbage (Brassia pekinensis) hybrid F1 Nika in Volga-Vyatskii region of Russia | Биологические основы возделывания и хранения гибрида капусты пекинской F1 Ника в Волго-Вятском регионе
2010
Paponov, A.N., Perm State Agricultural Academy (Russian Federation)
The Chinese cabbage hybrid F1 Nika (HN) is evaluated by resistance to clubroot and by productivity in the Perm Region. In 2003 the HN had no signs of injuries in plots infected by clubroot (Plasmodiophora brassicae) and the yield of HN was 70-83 000 kg/ha. The experiment was done with the follow ratios of fertilizers: 60P80K120, N120P160, N180P240K360 and no fertilizers (reference plot). The fertilizers contributed to earlier formation of cabbage heads and their intensive growth that resulted in higher yields and marketable heads. Application of a full dose of fertilizers N180P240K360 resulted in the highest yield (55 000 kg/ha), the maximum yield increase (25 000 kg/ha or 83.3%) and the most marketable heads of cabbage (78%). However, nitrate content increased from 614 mg/kg (no fertilizers) up to 2057 mg/kg that did not exceed the MPC (maximum permissible concentration). The influence of storage in refrigerators on quality indicators of HN was studied. A natural loss of mass for 5 months (October - March) was 6%. During the period of storage a sugar content decreased by 0.9%, the one of dry substance by 2.6%. A content of ascorbic acid decreased by 8.1 mg%, the one of nitrates did by 977 mg/kg, but fiber content did not change. Marketability of cabbage heads was 75% on 15 March. The conclusion has been done that the HN has a high level of agronomic characters and it is recommended for introduction into agriculture of the Perm Region
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