T. Barakova Agricultural Academy, 1373 Sofia, Field Crops Institute, 6200 Chirpan, Bulgaria (Manuscript received 16 June 2023; accepted for publication 29 August 2024) Abstract. The experiment was conducted during the period 2019-2021 in the experimental field of the Field Crops Insti

T. Barakova* Agricultural Academy, Field Crop Institute, 6200, Chirpan, Bulgaria (Manuscript received 2 June 2023; accepted for publication 23 June 2024) Abstract. The research was conducted during the period 2020-2022 in the experimental field of the Field Crops Institute – Chirpan,

Dimitrova, M. Koleva*, N. Valkova Agricultural Academy, Field Crop Institute, 6200 Chirpan, Bulgaria (Manuscript received 6 July 2023; accepted for publication 28 May 2024) Abstract. The aim of this research was to study heterosis, combining ability and genetic control of most importa

N. Valkova, M. Koleva* Agricultural Academy, Field Crops Institute, 6200 Chirpan, Bulgaria (Manuscript received 2 June 2023; accepted for publication 25 March 2024) Abstract. During the period 2016-2019, 21 Bulgarian and 10 foreign cotton varieties were included in a trial set by the

S. Gürsoy1*, C. Özaalan2 1Department of Agricultural Machinery and Technologies Engineering, Faculty of Agriculture Dicle University, 21280 Diyarbakır, Turkiye 2Plant Protection Department, Faculty of Agriculture, Dicle University, 21280 Diyarbakır, Turkiye (Manuscript received 2 Sept

N. Valkova, M. Koleva* Field Crops Institute, 6200 Chirpan, Agricultural Academy, Sofia, Bulgaria (Manuscript received 14 October 2021; accepted for publication 16 January 2022) Abstract. The norm of reaction in qualitative aspect was studied in 31 Bulgarian and foreign cotton cultiva

M. Koleva*, M. Radevska Field Crops Institute, 6200 Chirpan, Bulgaria (Manuscript received 14 August 2021; accepted for publication 26 October 2021) Abstract. Seeds of five Bulgarian cotton varieties, stored for one and two years, were subjected to five pre-sowing electromagnetic trea

V. Dimitrova, R. Dragov Field Crops Institute – Chirpan, 6200 Chirpan, Bulgaria (Manuscript received 7 June 2021; accepted for publication 2 August 2021) Abstract. Cotton breeding in Bulgaria is mainly aimed at improving the earliness, productivity and fiber quality of modern va

Barakova, St. Georgiev   Field Crops Institute, 6200, Chirpan, Bulgaria   (Manuscript received 25 June 2019; accepted for publication 15 August 2019)   Abstract. The trial was carried out during 2013-2015, with twelve cotton cultivars (Gossypium hirsutum L.). Influence of herbici

T. Barakova1*, G. Delchev2 1Field Crops Institute, 6200 Chirpan, Bulgaria 2Department of Plant Production, Faculty of Agriculture, Trakia University, 6000 Stara Zagora, Bulgaria (Manuscript received 2 June 2017; accepted for publication 17 August 2017) Abstract. Weed control in the cu