Influence of Treatment with Confidor 70 WG Imidacloprid on Productivity and Chemical Composition of Winter Vetch Vicia villosa Roth. in Different Sowing Time | ВЛИЯНИЕ НА ТРЕТИРАНЕТО С КОНФИДОР 70 ВГ ИМИДАКЛОПИД ВЪРХУ ПРОДУКТИВНОСТТА И ХИМИЧНИЯ СЪСТАВ НА ЗИМЕН ФИЙ В УСЛОВИЯТА НА РАЗЛИЧНИ СЕИТБЕНИ СРОКОВЕ
2012
Georgieva, N., Institute of Forage Crops, Pleven (Bulgaria) | Nikolova, I., Institute of Forage Crops, Pleven (Bulgaria) | Ilieva, A., Institute of Forage Crops, Pleven (Bulgaria)
It is studied the influence of preparation Confidor 70 WG 700 g/kg imidacloprid on productivity and chemical composition of winter vetch Vicia villosa Roth. in the conditions of different sowing time 20-25 September, 5-10 October and 20-25 October. The experimental activity is conducted during 2007-2010 period in IFC-Pleven by split plot method. It is found that the application of Confidor 70 WG had a positive influence on dry matter productivity flowering-pod formation stage increasing it average by 26.5%. The effect is most pronounced in second time (5-10 October – 36.5% compared to the control. The aboveground mass leaves, flowers, stems and pods of treated plants with Confidor had increased crude protein content average by 5.7, 4.6, 2.8 and 2.6% and leaf pigments average by 12.0%. Under influence of sowing time factor the change in total content of leaf content was one-way and decreased from first 292.10 mg/100 g fresh mass to last sowing time 239.99 mg/100 g fresh mass. The winter vetch from treated with Confidor variants formed by 13.7 to 25.5% higher grain yield the percentage of increase gradually decreased from first to last sowing time and higher content of crude protein, crude fibre and calcium.
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