Immature green citrus detection based on colour feature and sum of absolute transformed difference (SATD) using colour images in the citrus grove

2016 ◽  
Vol 124 ◽  
pp. 243-253 ◽  
Author(s):  
Chuanyuan Zhao ◽  
Won Suk Lee ◽  
Dongjian He
Keyword(s):  
EDIS ◽  
2016 ◽  
Vol 2016 (7) ◽  
Author(s):  
Marina Burani Arouca ◽  
Stephen Hubbard Futch ◽  
Ariel Singerman

We provide estimates for the costs of planting and maintaining reset citrus trees in Florida in the era of HLB, The estimates are useful as a benchmark but also to inform industry stakeholders and policymakers regarding the costs growers have to incur in when planting new trees.


Author(s):  
Alessandro S. Martins ◽  
Leandro A. Neves ◽  
Paulo R. Faria ◽  
Thaína A. A. Tosta ◽  
Daniel O. T. Bruno ◽  
...  

1976 ◽  
Vol 28 (3) ◽  
pp. 395-402 ◽  
Author(s):  
John M. Gardiner ◽  
Hilary Klee ◽  
Graham Redman ◽  
Michael Ball

The release from proactive inhibition (PI) paradigm has been widely used as a technique for exploring the encoding dimensions of short-term memory for verbal items. PI release data have been used not only to infer particular memory codes but also to index their relative salience. In the present study, the effects of manipulating the colour (red or black) in which the stimulus material is printed were investigated in two separate experiments. No release effect was obtained in the first, where common two-syllable words were presented. In the second, where consonant trigrams were presented, a large effect was found. Since the same colour feature was manipulated in each experiment, it is argued that this pattern of results has serious implications for the use of PI release data as a technique for mapping the encoding dimensions of short-term memory.


1984 ◽  
Vol 16 (2) ◽  
pp. 73-82 ◽  
Author(s):  
Gary D. Lynne ◽  
William G. Boggess ◽  
Kenneth M. Portier

AbstractIrrigation water is produced within the irrigation subprocess of a farm. Water supply is identified for effective field water, which sets the upper bound on water available for plant use. Georgescu-Roegen process analysis concepts are merged with the neoclassical theory of cost as the underlying framework. The approach is illustrated for a permanent overhead system used in a Florida citrus grove. The marginal cost for the 2.54 centimeters application depth dominates all other depths for the higher water levels. Process analysis is an important analytical tool for increasing understanding of the features of irrigation water supply.


1956 ◽  
Vol 7 (4) ◽  
pp. 248 ◽  
Author(s):  
RF Williams ◽  
CT Gates

Vegetative shoots from the spring flush of an experimental citrus grove tagged and sampled on three occasions at intervals of 6 months. The effects of four cultural treatments, four levels of nitrogen supply, four combinations of stock and scion, and of time on leaf area and dry weight, and on relative and absolute contents of water, nitrogen, and phosphorus are presented and discussed. While nitrogen nutrition is still the dominant factor, the evidence strongly suggests that phosphorus nutrition has become important as a determinant of treatment effects within the experimental grove. The possible relevance of soil temperature and soil organic matter for some of the cultural treatment effects is discussed.


2016 ◽  
Vol 8 (1) ◽  
pp. 93-97 ◽  
Author(s):  
Sepideh ANVARKHAH ◽  
Ali Davari Edalat PANAH ◽  
Alireza ANVARKHAH

Little studies have been done on morphology of medicinal plants seeds. This paper presents an automatic system for medicinal plant seed identification and evaluates the influence of colour features on seed identification. Six colour features (means of red, green and blue colours of the seed surface, as well as means of hue, intensity and saturation) were extracted by algorithm and applied as network input. Different combinations of colour features (one, two three, four, five and six colour features) were used to find out the most accurate combination for seed identification. Results showed that the six colour feature was the most accurate combination for seed identification (99.184% and 87.719% for training and test of neural network respectively). One colour feature had the lowest average accuracy values for seed identification (3.120% and 2.771%). In general, increasing the number of colour features increased the total average of accuracy values.


Author(s):  
Brian R. McMahon ◽  
Robert C. J. Koo ◽  
H. Williams Persons

In 1986 the City of Orlando, Florida; Orange County; and area citrus growers implemented an innovative program to reclaim municipal wastewater for irrigation of citrus trees. This program, known as Water Conserv II, is planned to ultimately provide up to 50 million gallons per day of reclaimed water to as much as 15,000 acres of citrus grove land. In this paper, the authors present the program concept; identify public health issues that were considered; describe the facilities that were constructed to treat, transmit and distribute the reclaimed water; discuss operational factors and summarize initial observations of the project’s performance after the first two years of operation. Paper published with permission.


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