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Variability of Root System Size and Distribution among Coffea canephora Genotypes
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Orientador(es)
Resumo(s)
This work aimed to evaluate the variability in the distribution of the root system among
genotypes of C. canephora cv. Conilon and indicate management strategies for a more efficient mineral
fertilization. Root distribution was evaluated in six genotypes. The experimental design was in
randomized blocks with three replications. Soil monoliths measuring about 27 cm3 were collected
at six different soil depths, at three row distances and nine distances of inter-row planting. The
collections were carried out in one plant of each repetition. In total, 1296 samples were evaluated.
The roots were washed, digitized and processed to quantify length density, volume, surface area
and diameter. The distribution of the root system was characterized using semivariograms. It was
observed that the highest concentration of roots occurred in the distances close to the irrigation
drippers. There was variation in the distribution of the root system among the genotypes. However,
in general, the root system is concentrated at a depth of 0 to 20 cm in the soil, at distances up to 50 cm
in the planting row and up to 60 cm in inter-rows. Therefore, the greatest efficiency in nutritional
management can be achieved by applying fertilizers within a radius of 50 cm around the plant
Descrição
Palavras-chave
Conilon coffee Robusta coffee root distribution semivariograms biodiversity
Contexto Educativo
Citação
Schmidt, R.; Silva, L.O.E.; Ferreira, A.; Gontijo, I.; Guimarães, R.J.; Ramalho, J.C.; Partelli, F.L. Variability of Root System Size and Distribution among Coffea canephora Genotypes. Agronomy 2022, 12, 647
Editora
MDPI