The Interactive effects of diatomite and manure on quantitative and qualitative characteristics of the leaves of Nigella sativa L.

Articles in Press

Document Type : Complete scientific research article

Authors

1 univercity of birjand

2 Dept. of Plant Production and Genetics Engineering / Soil Science and Engineering, College of Agriculture, University of Birjand, Birjand, Iran

3 Department of Plant Production and Genetics Engineering, College of Agriculture, University of Birjand.Iran

4 university of birjand

10.22069/ejsms.2025.22592.2161

Abstract

Background and Objectives: Diatomite is a mineral with high silicon content, porosity of more than 80% and very low pollution, it is environmentally friendly, so it can be used for soil stability. The combination of this mineral from the mines of South Khorasan with organic fertilizers is important in increasing their efficiency to improve the growth and performance of crops. One of the important needs in agricultural planning in order to achieve high yield and optimal quality, especially in the case of medicinal plants, is the evaluation of different plant nutrition systems. So, with the correct method of soil fertility and plant nutrition, it is possible to increase the efficiency of inputs while preserving the environment, reducing erosion and preserving biodiversity. The purpose of this research was to investigate the effect of manure and diatomaceous earth on the growth, physiological characteristics and nutrients of the leaves of black seed medicinal plant.
Materials and Methods: This experiment was conducted in order to investigate the effect of manure and diatomite on characteristics of growth, physiological and elements of the leaves of black seed in the greenhouse of a factorial arrangement based on randomized complete block design with three replications. Treatments were three levels of manure (0, 30 and 60 t/ha) and four levels of diatomite (0, 4, 8 and 16 t.ha-1). The measured indices including vegetative characteristics (plant height (cm), stem diameter (mm), dry weight plant (g) leaf, area (cm2)) and physiologic characteristics (SPAD, relative water content (%) and electrolyte leakage (%)) and element (p (%), k (%) and iron (mg.kg-1 dry weight)). Finally, the experimental data were statistically analyzed using SAS program and comparison of means was performed by LSD test at 5% probability level.
Results: The results of analysis of variance showed that the effect use of manure and diatomite was significant on vegetative, physiological traits and nutrients of black seed. The results of the interaction effect of the treatments showed that the highest plant height (57.1 cm), stem diameter (2.94 mm), plant dry weight (4.32 g) and leaf area (3.9 cm2) from The simultaneous application of 60 t.ha -1 of animal manure and 16 t.ha -1 of diatomite was achieved. The highest level of SPAD and relative water content and the least electrolyte leakage were related to the treatment of the combined use of 60 t.ha -1 of animal manure and 16 t.ha -1 of diatomite. It was also observed that the maximum amount of phosphorus, potassium and iron of the leaves was obtained as a result of the simultaneous application of 60 t.ha -1 of animal manure and 16 t.ha -1 of diatomite.
Conclusion: According to the results obtained from this experiment, it can be recommended that the application of animal manure with diatomite can have a positive effect on improving the physical and chemical properties of the soil and increase the uptake of nutrients and consequently improve plant growth. This can reduce the irrigation frequency and costs and resulted to maintain agricultural sustainability and soil health.

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Journal of Soil Management and Sustainable Production

Articles in Press, Accepted Manuscript
Available Online from 29 September 2025

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