Author: Krasimir Trendafilov, Violeta Valcheva
Author: Никола Цайкин
10. Content and amount of active Ca in calcaeric and non – calcaeric saturated cynnamonic forest soils in Eastern Rhodope soil province
Author: Violeta Valcheva, Krasimir Trendafilov
11. Yield and fisical quality of grain of durum wheat (Triticum Durum Desf.) varieties depending on nitrogen norm fertilization
Author: Nadezhda Semkova
12. Content of protein and wet and dry gluten in the grain of Triticum Durum Wheat (Triticum Durum Desf.) varieties depending on nitrogen fertilization
Author: Nadezhda Semkova, Zhivko Terziev, Ivan Saldzhiev
13. Interaction between some leaf fertilizers and the density of Colorado potato beetle eggplant crops (Leptinotarsa decemlineata Say)
Author: Kostadin Kostadinov, Antonia Mateeva, Nedyalka Palagacheva
14. Biological behaviour of different varieties of tomatoes grown in glasshouses. I. Phenological and morphological characteristics.
Author: Stoyan Filipov, Kostadin Kostadinov, Krasimir Mihov
15. Biological behaviour of different varieties of tomatoes grown in glasshouses. II. Economic productivity.
Author: Stoyan Filipov, Kostadin Kostadinov, Krasimir Mihov
16. Effect of different fertilizing systems on productivity and N, P & K taken up from maize hybrid Mikado
Author: Tony Tomov, Ivan Manolov, Melina Tomova
17. Effect of different fertilizing systems on productivity and N, P & K taken up from wheat variety Prelom
Author: Tony Tomov, Nedialka Yordanova
18. Effect of different fertilizing systems on productivity and N, P & K taken up from brewing barley variety Kamenica
Author: Tony Tomov, Ginio Rachovski, Nedialka Yordanova