| Full text | |
| Author(s): |
João Paulo Francisco
[1]
;
Adriano Valentim Diotto
[2]
;
Marcos Vinicius Folegatti
[3]
;
Leonardo Duarte Batista da Silva
[4]
;
Sonia Maria de Stefano Piedade
[5]
Total Authors: 5
|
| Affiliation: | [1] USP. ESALQ
[2] University of Nebraska - Lincoln
[3] USP. ESALQ
[4] UFRRJ
[5] USP. ESALQ
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Revista Brasileira de Fruticultura; v. 36, n. 2, p. 285-293, 2014-06-00. |
| Abstract | |
The plant leaf area has correlation between the photosynthesis activity and plant transpiration, once reflect the plant capacity to intercept the radiation. Therefore can be an important indicative of productivity in agricultural crops. Front of the scarcity of studies about pineapple leaf area, this study aimed identify equations to determine the pineapple leaf area (cv Vitoria) by alometric relationships. 120 pineapples plants were used and collected at the moment of flower induction, 270 days after transplanting. Height (h) and number of leaves (NF), length (C) and width (L) of "D" leaf were measured. The product of length and width (CxL) was considered as an additional variable. The data was analyzed with regression analysis and was chose the equation that presented the best correlation. The model validation used 60 new plants and the results was evaluated by coefficient of determination (R2), Pearson correlation (r), mean error (EA), absolute mean error (ERA) and the root mean square error (RQME). The product of length and width like variable (AF=19,298*(CXL)-559,9*) was the best to determine the leaf area in the pineapple, with low errors, high correlation and facility on the measurement. (AU) | |
| FAPESP's process: | 12/04806-7 - Fertigation of cultivate of pineaplle Vitória with stillage: effects on soil and culture |
| Grantee: | João Paulo Francisco |
| Support Opportunities: | Scholarships in Brazil - Master |