Response of garlic clones to the combined effect of planting densities and nitrogen supply modes
Inefficient fertilization practices, as well as relatively low planting densities in garlic crops, determine high production costs and yields below crop potential. In order to study the response of Mediterranean garlic clones to combinations of planting densities and nitrogen supply modes, thr...
| Autores principales: | , , |
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| Formato: | info:ar-repo/semantics/documento de conferencia |
| Lenguaje: | Español |
| Publicado: |
Asociación Argentina de Horticultura (ASAHO)
2024
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/19171 http://id.caicyt.gov.ar/ark:/s18519342/osgu7ngao |
| Sumario: | Inefficient fertilization practices, as well as
relatively low planting densities in garlic
crops, determine high production costs and
yields below crop potential. In order to
study the response of Mediterranean garlic
clones to combinations of planting
densities and nitrogen supply modes, three
clonal cultivars ("Unión", late white garlic,
"Gostoso INTA" and "Rubí INTA", red
garlic) were tested at the Agricultural
Experimental Station La Consulta INTA
(33.7 S, 69.7 W, 940 m.a.s.l.). Six
arrangements combining two planting
densities (28 and 56 plants.m-2
) and three
nitrogen supplying modes (without
fertilizing; 180 kg.ha-1
until bulbing
beginning; 70% of the dose until bulbing
beginning and 30% from rapid bulb
growth), were established. With 33
physiological and environmental
covariates, principal components analysis
and partial-least squares regression
analysis were performed. Doubling the
traditional plant population substantially
increased total yield of garlic, with better
response in the late white clone. The stage
of rapid vegetative growth was defined as
of main importance in determining the
response to high density in Mediterranean
clones. Nitrogen dose partitioning did not
show consistent differential responses.
Those findings provide new insights for improving crop-ecophysiology-based
management practices in garlic, in terms of
plant density and cultivar selection. |
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