ORIGINAL PAPER
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| Aggressiveness of Sclerotinia sclerotiorum isolates to Phaseolus vulgaris and Helianthus annuus |
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| Keranka Zhecheva • Ivan Kiryakov |
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9 - 16 |
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| Study of breeding lines and varieties of spring forage peas (Pisum sativum L.) |
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| Valentin Kosev • Natalia Georgieva • Ina Stoycheva-Mavrovska |
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17 - 26 |
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| 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 |
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| Margarita Nankova • Georgi Sabev • Zornitsa Petrova • Genoveva Bankova - Atanassova |
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27 - 42 |
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| Influence of sowing date and inter-row spacing on the yield in three soybean varieties |
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| Georgi Georgiev • Rositsa Todorova |
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43 - 56 |
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| Technological characteristics of new winter soft wheat varieties |
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| Emil Penchev • Sonya Doneva • Rumyana Alexandrova |
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57 - 64 |
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| Fundamentals of principle component analysis |
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| Emil Penchev • Sonya Doneva |
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65 - 72 |
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| Agrochemical characteristics of Haplic Chernozems in conventional and transition to organic farming |
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| Margarita Nankova • Atanas Atanasov • Iliya Iliev |
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73 - 90 |
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| Influence of crop density on the productivity of some sunflower hybrids (Helianthus annuus L.) in the conditions of Dobrudzha |
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| Mariyana Stoeva1 • Petar Yankov2 |
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91 - 98 |
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| Aspects of the official control of the trade in organic food in Northeastern Bulgaria |
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| Rozalina Brykova • Albena Toneva |
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99 - 106 |
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| Integrated policies and agrо-environmental practices in the introduction of carbon farming to mitigate the causes and consequences of climate change |
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| Ekaterina Serafimova1 • Jechko Iordanov2 |
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107 - 120 |
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| Influence of mineral fertilization on cotton productivity |
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| Stefka Stefanova-Dobreva1 • Angelina Muhova1 • Bogdan Bonchev2 |
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121 - 126 |
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| Influence of some leaf fertilizers and the growth regulator Amalgerol on winter oilseed rape production |
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| Milena Radevska • Minka Koleva |
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127 - 136 |
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| Study on the reaction of Helianthus debilis accessions to Phomopsis helianthi Munt.-Cvet. |
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| Mariya Petrova • Valentina Encheva • Daniela Valkova |
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137 - 142 |
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