Published in Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1
Written by Gergana IVANOVA-KOVACHEVA, Galin GINCHEV, Iliana IVANOVA, Nikolay KOVACHEV
The study was conducted within the Longstanding Stationary Fertilizer Experiment (LSFE) in IASS "Obraztsov chiflik", Rousse with the aim of establishing the influence of different options of mineral fertilization on yield and some physiological characteristics, including resistance to environmental stress in field beans. It was found that the highest yield for the period - 1,070 kg ha-1 - was obtained in the experimental plot with combined N5K7 fertilization, represents nearly 70% increase compared to the average yield of the control. The content of photosynthetic pigments in the leaves of field beans varies significantly in different fertilization options, with the highest levels of chlorophyll a+b being found in the variant with nitrogen fertilization (N5) - 1.520 mg g-1. The variants with combined N5P12 fertilization stand out as the most resistant to atmospheric drought during the four-year research period, with the reported values - 98.28 μS cm- 1, being 9,8% lower, compared to the control. The highest resistance to soil drought was established again in the variants with combined N5P12 fertilization (500.00 μS cm-1) and the lowest - within the control (711.58 μS cm-1).
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{simplepopup popup="false" name="Citation41"}IVANOVA-KOVACHEVA G., GINCHEV G., IVANOVA I., KOVACHEV N. 2026, EFFECT OF DIFFERENT TYPES OF MINERAL FERTILIZATION ON YIELDS AND SOME PHYSIOLOGICAL CHARACTERISTICS IN FIELD BEANS. Scientific Papers. Series A. Agronomy, Vol. LXIX, Issue 1, ISSN 2285-5785, 334-345. {/simplepopup}