Growth, and Phytochemicals of Collard Green (Brassica oleracea var. acephala ‘Morris Heading’) Grown in Growing Media from Transitioned-paddy Soil to Organic Paddy Soil Supplemented with Different Organic Materials

Authors

  • Petcharat Promatar Program in Agriculture, Faculty of Agriculture and Agricultural Industry, Surindra Rajabhat University, Surin
  • Nitipat Pattanachatchai Program in Agriculture, Faculty of Agriculture and Agricultural Industry, Surindra Rajabhat University, Surin https://orcid.org/0000-0003-0275-5768
  • Sunisa Yaowasakunmat Program in Agriculture, Faculty of Agriculture and Agricultural Industry, Surindra Rajabhat University, Surin
  • Saifon Todtasri Program in Agriculture, Faculty of Agriculture and Agricultural Industry, Surindra Rajabhat University, Surin
  • Nandha Sompen Program in Animal Science, Faculty of Agriculture and Agricultural Industry, Surindra Rajabhat University, Surin

DOI:

https://doi.org/10.14456/jare-mju.2026.4

Keywords:

collard green, phytochemical, spent mushroom, azolla, goat manure

Abstract

This study aimed to evaluate the effects of supplementing paddy soil, after three years of transition to organic rice farming (T-PSOPS), with composted spent Bhutan oyster mushroom waste (SBOMW) mixed with dried Azolla (DA) and dried goat manure (DGM) on the growth performance and phytochemical properties of collard green ‘Morris Heading’ grown in planting bags. The experiment employed a completely randomized design with five treatments and six replications. The treatments consisted of T-PSOPS (control) (T1); T1 + SBOMW at a ratio of 20:2 kg (T2); T1 + 50% SBOMW co-composted with 50% DA at a ratio of 20:2 kg (T3); T1 + 50% co-composted with 50% DGM at a ratio of 20:2 kg (T4); and T1 + 50% SBOMW co-fermented with 25% DA and 25% DGM at a ratio of 20:2 kg (T5). Results showed that the treatment with 50% SBOMW composted with 25% DA and 25% DGM      yielded the highest leaf width (16.11±0.80 cm), leaf length (26.92±1.15 cm), leaf chlorophyll content (56.59±1.35 SPAD units), dry weight of leaves including petioles (20.60±0.90 g), total phenolic content (7.47±0.79 mg GAE g-1 DW), and antioxidant activity (4.72±0.44 mg VitC g-1 DW). Meanwhile, the mixture of 50% SBOMW and 50% DA produced the highest petiole length (7.77±0.39 cm) and total flavonoid content (45.81±2.74 mg QE g-1 DW). Therefore, the specific combinations of organic amendments into  T-PSOPS were able to enhance both growth and phytochemical substances in collard green under planting bag conditions.

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Table 2   Leaf width (LW), leaf length (LL), petiole length (PL), leaf chlorophyll content (LCC) and dry weight of leaves including petioles (DWLIP) of collard green cv Morris Heading   as supplemented with different ratio of organic materials

Published

2026-03-19

How to Cite

Promatar, P., Pattanachatchai, N., Yaowasakunmat, S., Todtasri, S., & Sompen , N. (2026). Growth, and Phytochemicals of Collard Green (Brassica oleracea var. acephala ‘Morris Heading’) Grown in Growing Media from Transitioned-paddy Soil to Organic Paddy Soil Supplemented with Different Organic Materials . Journal of Agricultural Research and Extension, 43(1), 42–54. https://doi.org/10.14456/jare-mju.2026.4

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Section

Research Article