Spent mushroom compost to germinate and grow Ricinus communis: Spent mushroom compost for Castor oil

Objective: Determine the response of Castor oil seeds and seedlings to six different substrata: regional soil (sandy-clay-loam), sand, spent mushroom compost (CAC), and mixes of CAC with sand in 50% (A1:CAC1), 66 % (A1:CAC2) and 33 % (A2:CAC1). Design/methodology/approach: The experimental design consisted of two completely random blocks with 24 experimental units by substrate, monitored from their germination until 50 days later. Seed weights were correlated with final seedling biomass. Results: The substratum CAC1:A2 and CAC1:A1C allowed the best germination (P<0.05), while regional soil had the lowest germination. CAC produced the highest growth and mass development in 50-day-old plants (P<0.05), followed by CAC2:A1, CAC1:A1, and CAC1:A2m, while regional soil and sand had the lowest development. Seed weight was statistically positively correlated (P<0.05) with seed biomass only in the sandy substratum. Limitations on study/implications: The experimental period and pod size limited the achievements of this research. Findings/conclusions: CAC and mixes with sand provide suitable texture and nutrient contents to germinate and grow Castor oil seedlings independently of seed weight.

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Bibliographic Details
Main Author: Valdes-Rodríguez, Ofelia Andrea
Format: Digital revista
Language:spa
Published: Colegio de Postgraduados 2022
Online Access:https://revista-agroproductividad.org/index.php/agroproductividad/article/view/2300
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Summary:Objective: Determine the response of Castor oil seeds and seedlings to six different substrata: regional soil (sandy-clay-loam), sand, spent mushroom compost (CAC), and mixes of CAC with sand in 50% (A1:CAC1), 66 % (A1:CAC2) and 33 % (A2:CAC1). Design/methodology/approach: The experimental design consisted of two completely random blocks with 24 experimental units by substrate, monitored from their germination until 50 days later. Seed weights were correlated with final seedling biomass. Results: The substratum CAC1:A2 and CAC1:A1C allowed the best germination (P<0.05), while regional soil had the lowest germination. CAC produced the highest growth and mass development in 50-day-old plants (P<0.05), followed by CAC2:A1, CAC1:A1, and CAC1:A2m, while regional soil and sand had the lowest development. Seed weight was statistically positively correlated (P<0.05) with seed biomass only in the sandy substratum. Limitations on study/implications: The experimental period and pod size limited the achievements of this research. Findings/conclusions: CAC and mixes with sand provide suitable texture and nutrient contents to germinate and grow Castor oil seedlings independently of seed weight.