N. Valchev1*, G. Pevicharova2 1Department of Plant Production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria 2Vegetable Crops Research Institute Maritsa, 32 Brezovsko shose, 4003 Plovdiv, Bulgaria Abstract. The morphological and reproductive manifestations as

P. Kaymakanov* Department of Fruit Growing, Faculty of Viticulture and Horticulture, Agricultural University Plovdiv, 12 Mendeleev, 4000 Plovdiv, Bulgaria Abstract. In the period 2012 – 2013 the influence of 3 interstocks on growth and fruit bearing of the sweet cherry cultivar

Abstract. The general combining ability (GCA) and specific combining ability (SCA) of twenty-six middle early maize lines was studied by Savchenko’ method. The lines were tested on three testers, with origin of two genetic groups: ХМ 98 40 and КС 05 7 of SSS и ХМ 87 15 of Lancas

G. Dobrevska* Department of Fruit-Growing, Faculty of Viticulture and Horticulture, Agricultural University Plovdiv, 12 Mendeleev, 4000 Plovdiv, Bulgaria Abstract. The growth and reproductive characteristics of the apple variety Braeburn 7926 grafted on two rootstocks with different g

N. Velkov, V. Petkova Abstract. The effect of Herbagreen mineral fertilizer on seed production of cucumber, melon and zucchini was evaluated. Three times treatment with the fertilizer at a dose of 0.04% at an interval of 14 days has a positive effect on seed yield in the studied cultu

G. Panayotova, A. Stoyanova Abstract. During the period 2008 – 2010 the response of durum wheat cultivar Progress, grown on Eutric Vertisols at the field of the Field Crops Institute, Chirpan, Bulgaria to foliar feeding with universal liquid fertilizer MaxGrow was studied. The fertili

A. Matev, R. Petrova Abstract. The aim of this work is to establish parameters of relationship “yield-irrigation depth” for sunflower (grown in the region of Plovdiv), using different equations, as follows: y = ax2 + bx + c; y = y + 2 (1–y ) x – (1–y )x2; Y = 1 – (1 –Y )(1 – x)n. The

R. Petrova, A. Matev, K. Koumanov, B. Harizanova-Petrova Abstract. The aim of the study was to establish productivity of green bean, variety “Strike” irrigated at different pre-irrigation soil moisture. The field experiment was conducted during the period 2010 – 2012 on th

M. Ilchovska Abstract. For the purposes of preliminary evaluation of the combining ability for grain yield of 12 mutant maize lines a top cross method for early testing and the mathematical model of Savchenko(1993) for analysis of the general combining ability and specific combining a

B. Dyulgerova, D. Valcheva Abstract. Twenty two double haploid lines from winter malting barley breeding program of the Institute of Agriculture – Karnobat were tested in randomized complete block design with four replications. The objective of this study was to evaluate the breeding