Improvement of growth and physiological characteristics of Cuminum Cuminum L. by a combination of vermicompost and biofertilizer under different irrigation regimes

The world approach to produce the crops is toward the qualitative and quantitative increase in the performance of herbs via the managerial methods, such as applying the biofertilizers and reducing the use of the chemical fertilizers.

This research was done as a split-plot in completely random block design with three replications in Fasa County in 2021. The first factor of the irrigation intervals included: 25, 50, and 75 percent drainage of available moisture, and the second factor included 100 percent of chemical fertilizer needed, 10 tons of vermicompost per hectare, 10 tons of vermicompost per hectare along with the biofertilizer super nitroplus, super nitroplus fertilizer and the control treatment (no fertilizers).

The results showed that in 25 percent moisture drainage level, the highest nitrogen of leaves, chlorophyll content and biological performance at 100% chemical requirement was obtained. But, in 25% moisture drainage, most of these characteristics in the vermicompost were accompanied with biofertilizer which did not show a significant difference compared to 100% chemical fertilizer. Biofertilizer increased catalase and peroxidase enzyme activity. Chemical fertilizer and vermicompost and biofertilizer also increased seed performance compared to treatment 8 to 12%. Applying only biofertilizer increased Cuminum cyminum L. percentage of the essence. But, the lowest amount of it was observed when chemical fertilizer and control.

To sum up, the results of this research showed that the vermicompost and biofertilizer in most cases can compete with chemical fertilizer, especially when drought tension showed a greater effect.