Author: Dafinka Ivanova
Author: Никола Цайкин
22. Weed control in sunflower cultivation in the conventional technology
Author: Todor Manilov, Ivan Zhalnov
23. Studies on some biological features of tuberous sour grass Cyperus rotundus L.
Author: Tomas Filliusis, Ivan Zhalnov
1. Effect of fertilizing systems on the productivity of cereal crops during the conversion period from conventional to organic production
Author: Svetla Kostadinova, Ivan Manolov
2. Chorological data for vascular plants in Bulgaria
Author: Tsvetanka Raycheva, Kiril Stoyanov
3. Analysys of the flora of the Ostrova locality, Plovdiv
Author: Kiril Stoyanov, Tsvetanka Raycheva
4. Comparative testing of oil sunflower hybrids in the region of North–East Bulgaria
Author: Vanya Delibaltova
5. Determining the leaf area of new lines and hybrids of sunflower (Helianthus annuus L.)
Author: Georgi Georgiev, Nina Nenova, Penka Peevska, Plamen Chamurliysky
6. Dependence between the additional grain yield and the rate of nitrogen fertilization on triticale varieties for the Plovdiv region
Author: Hristofor Kirchev, Aleksander Matev, Vanya Delibaltova
7. Use of cluster analysis for grouping and evaluation of different oil sunflower hybrids
Author: Velika Kuneva, Nurettin Tahsin