منابع مشابه
Hyperspectral Nitrogen Sensing System for Citrus
official position of the American Society of Agricultural Engineers (ASAE), and its printing and distribution does not constitute an endorsement of views which may be expressed. Technical presentations are not subject to the formal peer review process by ASAE editorial committees; therefore, they are not to be presented as refereed publications. Citation of this work should state that it is fro...
متن کاملSpectral-based Nitrogen Sensing for Citrus
The research was conducted as a preliminary step for developing a real-time spectral-based nitrogen sensor for citrus trees. Diffuse reflectance of leaf samples were measured from 400 nm to 2500 nm using a spectrophotometer in a laboratory environment. X-loadings, X-weights, B-matrix in PLS, correlation coefficient spectrum and stepwise regression procedure were used to determine important wave...
متن کاملResponse of Young Citrus Trees on Selected Rootstocks to Nitrogen, Phosphorus, and Potassium Fertilization
The majority of the citriculture in Brazil is located in the state of São Paulo, with a total production area of 700,000 ha. Trees are grafted mostly on ‘Rangpur’ lime (RL; Citrus limonia Osbeck) rootstock. Despite its good horticultural performance, use of other rootstocks has increased with the search for disease-tolerant varieties to improve grove productivity and longevity. Furthermore, the...
متن کاملA stable RNA virus-based vector for citrus trees.
Virus-based vectors are important tools in plant molecular biology and plant genomics. A number of vectors based on viruses that infect herbaceous plants are in use for expression or silencing of genes in plants as well as screening unknown sequences for function. Yet there is a need for useful virus-based vectors for woody plants, which demand much greater stability because of the longer time ...
متن کاملDesign of A Hyperspectral Nitrogen Sensing System for Citrus
Abstract. Citrus is one of the most important agricultural crop in Florida. Heavy reliance on agricultural chemicals and low fertilizer efficiencies have raised environmental and economic concerns. In this study, a system to sense nitrogen levels in a single citrus leaf was developed. Based on chlorophyll and protein spectral absorption bands, the sensing system’s wavelength ranges were chosen ...
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ژورنال
عنوان ژورنال: EDIS
سال: 2013
ISSN: 2576-0009
DOI: 10.32473/edis-ss580-2013