Nur Fitriyah, Titik Irawati, Widyana Rahmatika, Neha Amanda

Pematahan Dormansi Teknis dan Komposisi Media Semai Pada Pembibitan Tanaman Kacang Sacha Ichi (Plukenetia volubilis L.)

Introduction

Pematahan dormansi teknis dan komposisi media semai pada pembibitan tanaman kacang sacha ichi (plukenetia volubilis l.). Pelajari teknik pematahan dormansi dan komposisi media semai terbaik untuk pembibitan kacang Sacha Inchi (Plukenetia volubilis L.), termasuk perbandingan suhu air & media tanah:pasir:kompos.

Abstract

Sacha inchi (Plukenetia volubilis L.) is one of the underutilized crops that has been adopted as a food source due to its high nutritional value, which is gradually being recognized as having potential benefits for human health. An initial obstacle to the cultivation of this commodity is seed dormancy, which requires a solution. The objectives of this study are 1) to determine the first count and final count in testing the germination capacity of seeds and suitable germination media. A completely randomized design (CRD) factorial was selected for this study. Factor 1 was P1 (ordinary water), P2 (water at 50 °C), P3 (water at 80 °C), and factor. 2 was M1 = soil:compost (2:1), M2 = soil: Sand (2:1), M3 = Soil:Sand:Compost (2:1:1). Each combination was repeated three times, with each combination consisting of 4 polybags, totaling have 135 polybags. Data were analyzed using F-tests with analysis of variance (ANOVA). If a significant effect was observed, a BNT test (5%) was conducted. Based on the research conducted, there was no significant interaction effect between seed soaking techniques and planting medium composition on germination observation. Breaking dormancy using different water immersion temperatures affects plant height at 21 days after sowing (DAS) and the number of leaves at 7 DAS. 3. Growing medium treatment has a significant effect on the number of leaves, and the M3 medium (soil : sand : compost) shows a significantly better effect compared to the l treatment.

Review

This study addresses a critical challenge in the cultivation of Sacha Inchi (*Plukenetia volubilis L.*), an increasingly recognized underutilized crop with significant nutritional value: seed dormancy. The paper aims to identify effective methods for breaking this dormancy and optimizing the composition of seedling media. By tackling these initial hurdles, the research contributes valuable insights towards improving the propagation and subsequent adoption of Sacha Inchi, which is vital for enhancing food security and leveraging the plant's health benefits. The objectives outlined focus on evaluating germination capacity through "first count" and "final count" metrics, alongside determining suitable germination media, setting a clear scope for the investigation. The research employed a completely randomized design (CRD) factorial, systematically investigating two key factors: seed soaking techniques using different water temperatures (ordinary, 50 °C, and 80 °C) and three distinct growing medium compositions (soil:compost, soil:sand, and soil:sand:compost). This robust experimental setup, repeated three times across 135 polybags, allowed for comprehensive data collection analyzed via F-tests and ANOVA, with a subsequent BNT test for significant effects. The findings indicate no significant interaction between the dormancy-breaking techniques and the planting medium on germination. However, the study reveals that different water immersion temperatures for breaking dormancy significantly affect seedling parameters like plant height at 21 days after sowing (DAS) and the number of leaves at 7 DAS. Furthermore, the growing medium composition significantly influences the number of leaves, with the M3 medium (soil:sand:compost at a 2:1:1 ratio) demonstrating a superior effect compared to other treatments. While the abstract clearly outlines the methodology and presents key findings, there are areas for enhanced clarity and elaboration. Specifically, the stated objective of determining "first count" and "final count" for germination capacity is not directly addressed in the results section, which instead focuses on post-germination growth parameters (plant height, leaf number). Elucidating the precise effects of water temperatures on germination *rate* and *percentage*, beyond just early seedling vigor, would strengthen the paper's contribution to dormancy breaking. Nevertheless, the identification of M3 (soil:sand:compost) as a significantly better growing medium for early leaf development provides practical and immediately applicable recommendations for Sacha Inchi nurseries. Future research could further quantify the specific improvements observed with M3 and explore the long-term impacts of the identified dormancy-breaking techniques on overall plant establishment and yield.

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