.
 


XIV, 2021
1
2-3-4
1   9 - 16
2   17 - 26
3   27 - 42
4   43 - 56
5   57 - 64
6   65 - 72
7   73 - 90
8   91 - 98
9   99 - 106
10   107 - 120
11   121 - 126
12   127 - 136
XIII, 2020
XII, 2019
XI, 2018
X, 2016
IX, 2014
VIII, 2012
VII, 2011
VI, 2010
V, 2009
IV, 2007
III, 2006
II, 2005
I, 2004
 




TOM XIV
2-3-4

2021
ORIGINAL PAPER

Aggressiveness of Sclerotinia sclerotiorum isolates to Phaseolus vulgaris and Helianthus annuus    
Keranka Zhecheva Ivan Kiryakov   9 - 16
 
Study of breeding lines and varieties of spring forage peas (Pisum sativum L.)    
Valentin Kosev Natalia Georgieva Ina Stoycheva-Mavrovska   17 - 26
 
Effect of a set of herbicides and the dates of their application to Triticum aestivum L. Cultivars on the content and yield of raw protein depending on the date of sowing    
Margarita Nankova Georgi Sabev Zornitsa Petrova Genoveva Bankova - Atanassova   27 - 42
 
Influence of sowing date and inter-row spacing on the yield in three soybean varieties    
Georgi Georgiev Rositsa Todorova   43 - 56
 
Technological characteristics of new winter soft wheat varieties    
Emil Penchev Sonya Doneva Rumyana Alexandrova   57 - 64
 
Fundamentals of principle component analysis    
Emil Penchev Sonya Doneva   65 - 72
 
Agrochemical characteristics of Haplic Chernozems in conventional and transition to organic farming    
Margarita Nankova Atanas Atanasov Iliya Iliev   73 - 90
 
Influence of crop density on the productivity of some sunflower hybrids (Helianthus annuus L.) in the conditions of Dobrudzha    
Mariyana Stoeva1 Petar Yankov2   91 - 98
 
Aspects of the official control of the trade in organic food in Northeastern Bulgaria    
Rozalina Brykova Albena Toneva   99 - 106
 
Integrated policies and agr-environmental practices in the introduction of carbon farming to mitigate the causes and consequences of climate change    
Ekaterina Serafimova1 Jechko Iordanov2   107 - 120
 
Influence of mineral fertilization on cotton productivity    
Stefka Stefanova-Dobreva1 Angelina Muhova1 Bogdan Bonchev2   121 - 126
 
Influence of some leaf fertilizers and the growth regulator Amalgerol on winter oilseed rape production    
Milena Radevska Minka Koleva   127 - 136