Evaluating the Physiological Traits and Grain yield of Dragon head (Lallemantia iberica Fischer & C.A. Meyer) under Drought Stress and application of Biological and Chemical Fertilizers

Document Type : Research Paper

Authors

1 University of Tabriz

2 Prof. , Faculty of Agriculture Univ. Tabriz

3 Prof., Faculty of Agriculture Univ. Tabriz

10.22034/saps.2024.59997.3157

Abstract

Background & Objectives: To assess the impact of water scarcity and the use of biological and chemical fertilizers on the physiological traits and seed yield of the medicinal plant Lallemantia iberica Fischer & C.A. Meyer, a field experiment was conducted as a split-plot based on a randomized complete block design with three replicates.
Materials & Methods: Different levels of irrigation (I1, I2, I3, and I4, representing irrigation after 70, 100, 130, and 160 mm of evaporation from a class A pan, respectively) were assigned to the main plots, while different fertilizer treatments (ammonium phosphate chemical fertilizer, Azoto Fertilizer 1 + Phosphate fertilizer 2, and vermicompost) were applied to the sub-plots.
Results: Application of fertilizer treatments improved the physiological performance and reduced leaf temperature, leading to an increase in the growth and grain yield of dragon head. However, the extent of this increase depended on the type of fertilizer used. The application of both ammonium phosphate and biofertilizer at all irrigation levels led to an increase in the relative water content of leaves, leaf chlorophyll index, grain and biological yields. The impact of using ammonium phosphate fertilizer to enhance the physiological efficiency of plants under optimal and mild drought stress conditions was much obvious. However, in cases of severe water stress, the impact of biofertilizers on improving physiological efficiency and growth of plants was more pronounced.
Conclusion: This result demonstrates the positive impact of biofertilizers on enhancing the grain yield of dragon head plants under severe drought stress.
 

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Main Subjects


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