Abstract
ABSTRACT Obtaining leaf area is critical in several agronomic studies, being one of the important instruments to assess plant growth. The aim of this study was to estimate equations and select the most appropriate in determining leaf area in litchi (Litchi chinensis Sonn.). From the linear dimensions of length (L) and maximum width (W) of leaf limb, equations were estimated using linear, quadratic, potential and exponential models. The linear regression equation using the product of the length by maximum width, given by Y = 0.2885 + 0.662 (L.W) is the one that best expresses the leaf area estimation of litchi tree.
Highlights
RESUMO - A obtenção da área foliar é fundamental em vários estudos agronômicos, sendo um dos importantes instrumentos que avaliam o crescimento de uma planta
Leaves have very important functions in the plant, such as intercepting and absorbing light to perform photosynthesis, gas exchanges, transpiration (SPANN and HEEREMA, 2010) and to define the fungicide application technology to be used, since parameters such as coverage, density and drop deposition depend on leaf area data
Leaf area can be measured by area estimation models as a function of linear leaf dimensions, which is advantageous in relation to the direct destructive method because more than one measurement can be made in the same leaves over time, which is interesting in growth analysis studies (OLFATI et al, 2010)
Summary
PABLO SOUTO OLIVEIRA2, WILTON SILVA2, ADRIANA APARECIDA MATTA COSTA3, EDILSON ROMAIS SCHMILDT4, EDNEY LEANDRO DA VITÓRIA5. ABSTRACT- Obtaining leaf area is critical in several agronomic studies, being one of the important instruments to assess plant growth. The aim of this study was to estimate equations and select the most appropriate in determining leaf area in litchi (Litchi chinensis Sonn.). From the linear dimensions of length (L) and maximum width (W) of leaf limb, equations were estimated using linear, quadratic, potential and exponential models. The linear regression equation using the product of the length by maximum width, given by Ŷ = 0.2885 + 0.662 (L.W) is the one that best expresses the leaf area estimation of litchi tree.
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