29
MAR
2022

Qualitative evaluation of the norm of reaction of Bulgarian and foreign cotton cultivars

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
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