The Effects of Shading and Nutrient Management on Yield Quality of Vegetable Fern

Abstract

This study investigated the optimization of shading and organic fertilizer applications on vegetable fern growth and yield quality in order to develop guidelines for farmers interested in sustainable vegetable fern production. The experiment was conducted in a split-plot design in RCBD with four replications. There were three main plots; no shading, 75% shading, and 96% shading. The five sub-plots consisted of no fertilizer application (control), chemical fertilizer at a rate of 92.80 kg N ha−1, and cow manure at rates of 92.80, 185.60, and 278.40 kg N ha−1. A comparison between different shading and fertilizer treatments, combined, demonstrated that 75% shading with the application of cow manure at the rate of 185.60 kg N ha−1 was the most appropriate management for vegetable fern production, with the highest marketable yield recorded (1128.54 kg ha−1 month−1) and a 10-fold yield increase compared to the control (no shading and no fertilizer). This treatment also resulted in good yield quality (crunchy and tender), high concentrations of chlorophyll and vitamin C, and a safe amount of nitrate accumulation for consumers.

Design, Validation, and Examination on the Performance Improvement of Dewatering System Implemented for Biogas Slurry

“…This collectively emphasizes the feasibility and profitability of the dewatering machine investment. Ultimately, these findings support the selection of the Constant pitch screw with a tapered shaft design for the pressing screw and highlight the potential for improved dewatering and sun-drying processes in the management and utilization of biogas slurry [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. The repayment duration in this research is computed as 1 year 10 months and 23 days, which is less than the payback period in Sherpa et al's 2017 study.…”