Root-Soil Interactions for Pepper Accessions Grown under Organic and Conventional Farming

Area of Science:

• Agricultural Science
• Soil Microbiology
• Plant Science

Background:

• Modern agriculture relies on synthetic inputs, raising sustainability concerns.
• Rhizosphere interactions are crucial for plant performance and nutrient cycling but remain understudied.
• Understanding soil-plant-microbe dynamics is key for sustainable agricultural systems.

Purpose of the Study:

• To compare soil traits and microbial activity in pepper rhizospheres under organic and conventional farming.
• To investigate genotype-specific effects of pepper on rhizosphere properties.
• To evaluate the impact of farming systems on root morphology and plant production.

Main Methods:

• Analysis of soil respiration, enzymatic activities, microbial counts, and nitrogen metabolism.
• Assessment of root morphology and plant yield.
• Comparison of four pepper accessions across organic and conventional management systems.

Main Results:

• Organic management significantly increased microbial counts, enzymatic activities, and nitrogen mobilization in both rhizosphere and bulk soil.
• Differences in soil traits were observed between organic and conventional systems.
• Pepper genotypes (e.g., Serrano, Piquillo) exhibited distinct effects on rhizosphere properties.

Conclusions:

• Organic farming promotes a healthier soil environment with enhanced microbial activity and nutrient availability.
• Plant genotype plays a critical role in shaping rhizosphere characteristics.
• Future breeding programs should consider genotype-specific soil interactions for developing soil-tailored agriculture.