SUDADI SUDADI
Department of Soil Science, Faculty of Agriculture, Universitas Sebelas Maret. Jl. Ir. Sutami 36A Surakarta 57126, Central Java, Indonesia

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

Effects of nutrient solution and substrate on Limnocharis flava performance in hydroponic systems RIZKA NOVI SESANTI; EDI PURWANTO; SAMANHUDI SAMANHUDI; SUDADI SUDADI
Asian Journal of Agriculture Vol. 9 No. 2 (2025)
Publisher : Smujo International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/asianjagric/g090225

Abstract

Abstract. Sesanti RN, Purwanto E, Samanhudi, Sudadi. 2025. Effects of nutrient solution and substrate on Limnocharis flava performance in hydroponic systems. Asian J Agric 9: 590-597. Limnocharis flava is a promising aquatic vegetable for substrate-based hydroponic cultivation. However, the optimal combination of nutrient concentrations and substrate types to maximize growth under hydroponic conditions remains unclear. This study evaluated five nutrient solution concentrations (0, 0.8, 1.6, 2.4, and 3.2 dS m-¹) and three substrate types (volcanic sand, rice husk charcoal, and a 1:1 mixture) in a Randomized Complete Block Design (RCBD) with three replications. Nutrient concentrations of 0.8 and 1.6 dS m-¹ produced the highest plant height (28.48 cm and 28.20 cm), number of leaves (11.31 and 11.03), shoot dry weight (4.61 g and 4.74 g), root fresh weight (13.20 g and 12.43 g), and root dry weight (0.76 g and 0.74 g). Both lower and higher concentrations inhibited growth, indicating optimal thresholds for nutrient uptake. Chlorophyll a, b, and total chlorophyll contents were similar across the 0.8-3.2 dS m-¹ range, but consistently higher than the control. The leaf greenness index showed a significant interaction between nutrient concentration and substrate type, with the highest value at 2.4 dS m-¹ in the mixed substrate. A nutrient concentration of 1.6 dS m-¹ produced the best overall performance. Based on these results, a combination of 1.6 dS m-¹ nutrient solution and a 1:1 mixture of volcanic sand and rice husk charcoal is recommended for the cultivation of L. flava. These findings establish baseline guidelines for hydroponic cultivation of L. flava and highlight its potential to advance precision hydroponics for indigenous vegetables, thereby contributing to food security and sustainable agriculture.
Enhancing soil carbon and rice dry biomass with microbial fuel cells, optimal spacing, and fertilizer in rice fields SHOFIE RINDI NURHUTAMI; SUDADI SUDADI; KOMARIAH KOMARIAH; WIDYATMANI SIH DEWI; ADHIA AZHAR FAUZAN
Biodiversitas Journal of Biological Diversity Vol. 25 No. 9 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250955

Abstract

Abstract. Nurhutami SR, Sudadi, Komariah, Dewi WS, Fauzan AA. 2024. Enhancing soil carbon and rice dry biomass with microbial fuel cells, optimal spacing, and fertilizer in rice fields. Biodiversitas 25: 3331-3338. Microbial fuel cell (MFC) uses electroactive anode bacteria to compete in rice fields without disrupting cultivation or altering diversity. Therefore, this research aimed to explore the combination of MFC, different spacing methods (Jajarlegowo and conventional), and NPK (Nitrogen, Phosphorus, and Potassium) fertilizer affecting soil carbon dynamics and rice dry biomass. The key parameters included bacterial community, soil respiration, microbial biomass carbon, Soil Organic Carbon (SOC), Carbon to Nitrogen (CN) Ratio, and rice dry biomass. The results showed that there were no significant differences across the parameters when combined. However, MFC increased soil respiration (0.618 CO2.day-1) and microbial biomass carbon (0.121 ?g. g-1) but decreased SOC and rice dry biomass (0.039% and 3.978 g. clump-1). Jajarlegowo plant spacing enhanced soil respiration (0.583 CO2.day-1), microbial biomass carbon (0.122 ?g. g-1), and rice dry biomass (10.635 g. clump-1). Meanwhile, NPK fertilizer enhanced microbial biomass carbon (0.170 ?g. g-1), soil respiration (0.615 CO2.day-1), and rice dry biomass (5.993 g.clump-1) but lowered CN Ratio by 3.471. A positive correlation was also observed between soil carbon and rice dry biomass. These emphasized the need for a holistic method to develop MFC technology in rice paddy soils. Further research was suggested on the role of Electroactive Anodes Bacteria (EAB) in organic matter decomposition over multiple rice growing seasons.