Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 1
Written by Mima TODOROVA, Tsvetelina STOILOVA, Mariya GERDZHIKOVA, Hristina RANGELOVA, Zornitza ZHERKOVA, Neli GROZEVA, Milena TZANOVA
The aim of this study was to investigate the relationship between NDVI, Chlorophyll and Nitrogen content in leaves with yield components of different Phaseolus vulgaris L. and Vigna (Vigna unguiculata L. Walp.) genotypes. Field experiment was conducted in 2024 year in the experimental field in Institute of Plant Genetic Resources, Sadovo, Bulgaria. The normalized difference vegetation index (NDVI), leaf chlorophyll content (Multy pigmentometer MPM - 100) and Nitrogen content (N-Pen) were measured on leaves directly in the field. The various plant characteristics in addition were measured such as plant height, plant weight, plant weight without pods, pod length, number of pods per plant, number of beans per pod, weight of beans per plant of cowpea (Vigna unguiculata L. Walp.) and common beans (Phaseolus vulgaris L). It was found that NDVI index has positive significant correlation with Chlorophyll (r = 0.69) and higher between N and chlorophyll (r = 0.75). It was also found the morphological traits studied characteristics as days to flowering, plant weight, number of seeds in pod showed higher correlation with chlorophyll index in compare to NDVI and N content.
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