Decomposed organic waste as a substrate for production of lettuce seedlings: Effect on the root system
The root system is in constant interaction with the shoot, which makes it one of the developers of a change in quality. In this sense, we evaluated the effect of decomposing organic waste as substrate in root development of lettuce seedlings under conditions of Bom Jesus, Piaui State, Brazil. The experiment was conducted under greenhouse (shading) with 50% of shading, the design of randomized blocks distributed in a factorial 6 x 2, regarding six materials used as substrates and two cultivars with four replications containing 100 cells each. The substrates were RPEB (prunings and other plant residues + cattle manure); RPEC (prunings and other plant residues + goat manure); RUEB (waste of the university restaurant and vegetables, fruits, vegetables unfit for commercialization collected on site + cattle manure market); RUEC (waste of the university restaurant and vegetables, fruits, vegetables unfit for commercialization collected on site + goat manure market); COM (Vermiculite); SC (soil + goat manure). The cultivars used were the curly group, cv. Grand Rapids and smooth group, cv. Baba-of-summer. It evaluated the average length of the longest root, root volume, root area, root density, root diameter, root length, root dry mass and stability of the root ball. The results show that after analysis of the variables for the root system, the organic compounds can be substituted with the commercial viability substrate (vermiculite), especially RPEB and RUEB; have the SC substrate does not have desirable characteristics for the production of quality seedlings.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2019
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/7341 |
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| Summary: | The root system is in constant interaction with the shoot, which makes it one of the developers of a change in quality. In this sense, we evaluated the effect of decomposing organic waste as substrate in root development of lettuce seedlings under conditions of Bom Jesus, Piaui State, Brazil. The experiment was conducted under greenhouse (shading) with 50% of shading, the design of randomized blocks distributed in a factorial 6 x 2, regarding six materials used as substrates and two cultivars with four replications containing 100 cells each. The substrates were RPEB (prunings and other plant residues + cattle manure); RPEC (prunings and other plant residues + goat manure); RUEB (waste of the university restaurant and vegetables, fruits, vegetables unfit for commercialization collected on site + cattle manure market); RUEC (waste of the university restaurant and vegetables, fruits, vegetables unfit for commercialization collected on site + goat manure market); COM (Vermiculite); SC (soil + goat manure). The cultivars used were the curly group, cv. Grand Rapids and smooth group, cv. Baba-of-summer. It evaluated the average length of the longest root, root volume, root area, root density, root diameter, root length, root dry mass and stability of the root ball. The results show that after analysis of the variables for the root system, the organic compounds can be substituted with the commercial viability substrate (vermiculite), especially RPEB and RUEB; have the SC substrate does not have desirable characteristics for the production of quality seedlings. |
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