Selection of Optimum Vegetative Indices for the Assessment of Tobacco Float Seedlings Response to Fertilizer Management
Joint Authors
Masuka, Anxious J.
Murwira, Amon
Maasdorp, Barbara
Svotwa, Ezekia
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-26
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The experiment sought to establish the vegetative indices for assessing tobacco float seedling varieties’ response to different fertilizer rates.
A factorial design, with 3 variety × 4 fertilizer management treatments, was used.
The N : P : K treatments were applied at 7, 21, and 35 days after sowing, while N treatments were applied at 42 days.
Radiometric measurements were taken at 49, 56, 64, and 79 days after sowing on 8 tray plots, using a multispectral radiometer.
Mature seedling samples were harvested at day 79 and stem lengths were determined before processing for total N analysis.
All the five channels of the radiometer, the NDVI, and the SRI had a strong relationship with fertiliser rate.
Both the NDVI and SRI for T66 were greater (P<0.05) than those for KRK26 and KE1.
The SRI had a stronger relationship with seedling dry mass, seedling count/tray, and stem length than the NDVI.
The NDVI also showed a stronger relationship with total N than the SRI.
The minimum threshold SRI and NDVI values and optimum growth (100% fertilser) were 0.72 and 6.1.
This information is useful in identifying and estimating tobacco seedbed area and seedling vigour using remote sensing and, therefore, is important in forecasting potential tobacco crop area and yield.
American Psychological Association (APA)
Svotwa, Ezekia& Maasdorp, Barbara& Murwira, Amon& Masuka, Anxious J.. 2012. Selection of Optimum Vegetative Indices for the Assessment of Tobacco Float Seedlings Response to Fertilizer Management. ISRN Agronomy،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-472545
Modern Language Association (MLA)
Svotwa, Ezekia…[et al.]. Selection of Optimum Vegetative Indices for the Assessment of Tobacco Float Seedlings Response to Fertilizer Management. ISRN Agronomy No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-472545
American Medical Association (AMA)
Svotwa, Ezekia& Maasdorp, Barbara& Murwira, Amon& Masuka, Anxious J.. Selection of Optimum Vegetative Indices for the Assessment of Tobacco Float Seedlings Response to Fertilizer Management. ISRN Agronomy. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-472545
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472545