Herliya Herliya, Nining Triani Thamrin, Muhanniah Muhanniah

EFFECTIVENESS OF PLANT GROWTH-PROMOTING RHIZOBACTERIA (PGPR) ON THE GROWTH AND YIELD OF CHILI PEPPER (Capsicum frutesscens L.)

Introduction

Effectiveness of plant growth-promoting rhizobacteria (pgpr) on the growth and yield of chili pepper (capsicum frutesscens l.). Evaluate Plant Growth-Promoting Rhizobacteria (PGPR) effectiveness on chili pepper (Capsicum frutescens L.) growth and yield. Determine optimal concentrations for enhanced plant development.

Abstract

Chili pepper (Capsicum frutescens L.) is a horticultural crop belonging to the Solanaceae family with high economic value. It is widely used as a culinary spice and constitutes one of the primary vegetables consumed daily by the Indonesian population. This study aimed to evaluate the effectiveness of Plant Growth-Promoting Rhizobacteria (PGPR) on the growth and yield of chili pepper plants and to determine the optimal PGPR concentration for enhancing plant development and productivity. The research was conducted from May until completion in Lakessi Village, Maritenggae Subdistrict, Sidenreng Rappang Regency, South Sulawesi Province, Indonesia. The treatments applied were as follows: K0 (control), K1 (12 ml/L of water), K2 (12.5 ml/L of water), K3 (13 ml/L of water), K4 (13.5 ml/L of water), and K5 (14 ml/L of water). The results showed that PGPR application had a significant effect on plant height but no significant effect on the number of leaves. The PGPR concentration of K2 (12.5 ml/L of water) resulted in the highest average plant height (42.33 cm). Meanwhile, for the number of leaves, the K2 concentration also recorded the highest average (50.67 leaves), although the difference was not statistically significant.Keywords: Chili pepper, PGPR, plant growth, yield.

Review

This study investigates the promising application of Plant Growth-Promoting Rhizobacteria (PGPR) to enhance the growth and yield of chili pepper, a crop of significant economic and culinary importance in Indonesia. The abstract clearly outlines the study's objective: to evaluate PGPR effectiveness and determine optimal concentrations for improving chili development and productivity. Conducted in South Sulawesi, Indonesia, the research employed a controlled experimental design, testing various PGPR concentrations against a control. This focus on optimizing PGPR application addresses a pertinent agricultural challenge, aiming to provide sustainable solutions for increased crop production. The findings presented indicate that PGPR application had a statistically significant positive effect on plant height, with the K2 concentration (12.5 ml/L of water) yielding the highest average plant height of 42.33 cm. Interestingly, while the same K2 concentration also resulted in the highest average number of leaves (50.67 leaves), this effect was not statistically significant. This suggests a differential impact of PGPR on various growth parameters, highlighting the potential for specific growth enhancements. The identification of an optimal concentration for plant height is a valuable contribution, offering practical guidance for farmers seeking to improve early-stage plant vigor. Despite these insightful preliminary results, the abstract presents a significant omission: the absence of any data related to "yield," which is explicitly mentioned in both the title and the study's stated aims. While growth parameters are crucial, the ultimate measure of productivity for a horticultural crop like chili pepper is its yield. Furthermore, the abstract lacks crucial details regarding the specific PGPR strain or consortium used, which is vital for reproducibility and understanding the biological mechanisms at play. Future iterations or the full manuscript should therefore provide comprehensive yield data, elucidate the specific PGPR utilized, and potentially explore other physiological parameters to offer a more complete picture of PGPR effectiveness on chili pepper productivity.

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