Articles
ALTERNATIVE MATERIALS AS SUBSTRATES FOR SEEDLINGS PRODUCTION
Article number
898_26
Pages
211 – 217
Language
English
Abstract
During the last few years the use of different organic substrates for the produc¬tion of forestal, ornamental and vegetable seedlings has become more frequent.
The aim of this work was to evaluate two organic residues that are available in northern Patagonia in Argentina as potential substrate for the production of vegetable seedlings and their behaviour using two cell volumes.
Treatments were COC1, COC2, LOC1, LOC2, CCEC1, CCE2 where CO stands for commercial substrate, LO for vermi¬compost of domiciliary organic waste and CCE for compost of onion residues plus cattle manure; C1 trays with 200 cells of 12 cm3 each and C2 trays with 128 cells of 22 cm3 each.
Lettuce cultivar Grand Rapids (Lactuca sativa var. crispa) was sown on two dates: 15/08/07 and 22/08/08. At the first true leave stage plantlets grown in CCEC2 (2007) and COC2 (2008), showed the greatest foliar area while from the first and second leaf stages to the end of the experiments those developed in CCEC2 showed the highest values during the two years the study lasted.
For both years at the stage of first true leaf, the highest dry weight values of the different parts of the seedlings were recorded for those that grew in COC1 and COC2. In 2007, the seedlings grown in CCEC2 were the ones for which the greatest weights were recorded during the last growth stage while in 2008 this effect was seen in CO and CCE, regardless of cell volume.
During the two years of the experiment at the latest stage, an increase in the root system of the seedlings grown in CCEC2 was observed.
The lowest values for these variables were for those seedlings grown in LO. It is concluded that the use of compost of onion residues plus cattle manure in the cells with greatest capacity, offers satisfactory conditions as a substrate.
The aim of this work was to evaluate two organic residues that are available in northern Patagonia in Argentina as potential substrate for the production of vegetable seedlings and their behaviour using two cell volumes.
Treatments were COC1, COC2, LOC1, LOC2, CCEC1, CCE2 where CO stands for commercial substrate, LO for vermi¬compost of domiciliary organic waste and CCE for compost of onion residues plus cattle manure; C1 trays with 200 cells of 12 cm3 each and C2 trays with 128 cells of 22 cm3 each.
Lettuce cultivar Grand Rapids (Lactuca sativa var. crispa) was sown on two dates: 15/08/07 and 22/08/08. At the first true leave stage plantlets grown in CCEC2 (2007) and COC2 (2008), showed the greatest foliar area while from the first and second leaf stages to the end of the experiments those developed in CCEC2 showed the highest values during the two years the study lasted.
For both years at the stage of first true leaf, the highest dry weight values of the different parts of the seedlings were recorded for those that grew in COC1 and COC2. In 2007, the seedlings grown in CCEC2 were the ones for which the greatest weights were recorded during the last growth stage while in 2008 this effect was seen in CO and CCE, regardless of cell volume.
During the two years of the experiment at the latest stage, an increase in the root system of the seedlings grown in CCEC2 was observed.
The lowest values for these variables were for those seedlings grown in LO. It is concluded that the use of compost of onion residues plus cattle manure in the cells with greatest capacity, offers satisfactory conditions as a substrate.
Publication
Authors
A.M. Miglierina, M.E. Ayastuy, R.A. Rodríguez, J.A. Fernández, A. Van Konijnenburg
Keywords
Lactuca sativa, compost, vermicompost, foliar area, dry weight
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