[b]Spatial Distribution Pattern of [i]Tetranychus urticae[/i] Koch (Acari: Tetranychidae) on Different Rosa Cultivars in Greenhouse Tehran[/b]
Journal Title: Journal of Ornamental and Horticultural Plants - Year 2015, Vol 5, Issue 3
Abstract
The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is an economically important pest of ornamental plant in Iran. The population abundance and spatial distribution were studied on five Rosa cultivars including Maroussia, Wendela, Elderado, Wenedetta, and Hot Lady during two growing seasons of 2011 and 2012 in greenhouse. The k parameter, index of dispersion, Lloyd’s mean crowding, Morisita’s index and regression methods (Taylor and Iwao) were used to estimate the spatial distribution pattern of mite. There was improved sampling program by k parameter and coefficients of regression models. The result indicated that the highest population density of T. urticae was early of July (2.47 per leaf) and early of September (4.11 per leaf). Also, a sequential sampling plan was developed using the fixed-precision method of Green for estimating the density of the mite. Populations on different Rosa cultivars, especially Maroussia, were aggregated during most of the growing season and negative binomial models fit data sets better than the Poisson series. The mean number of two-spotted spider mite per plant had significantly difference between all plant strata. The fitness percentage of cultivar Maroussia Rosa revealed a slight tendency towards the Poisson distribution, so that 58 and 14.1 percent of data sets from T. urticae on cultivar Wenedetta populations fit the Poisson distribution. These results fully support findings of distribution indices, indicating an aggregated distribution. Determining sampling program and spatial distribution pattern of the pest can effectively help to design and perform of IPM.
Authors and Affiliations
Fatemeh Bidarnamani, Elham Sanatgar, Mehdi Shabanipoor
Keywords
Related Articles
- EP ID EP154105
- DOI -
- Views 104
- Downloads 0
[b]Marigold: The Possibilty Using Vermicompost as the Growth Medium[/b]
In order to investigation of vermicompost effect on growth and yield of marigold in pot medium, an experiment was done by a randomized compeletely block design in three raplications. Treatmnets were inclu...
[b]Thrips Pests on Ornamental Plants in Mahallat, Markazi Province, Iran[/b]
Thripsspecimens were collected in the year 2014 on different ornamental plants from Mahallat (Markazi Province), Iran. In this study, 11 species in six genera and three different families of Thysanoptera were col...
[b]Improvement Postharvest Quality of Cut Alstroemeria ([i]Alstroemeria hybrida[/i]) by Stem-End Splitting and Ethanol[/b]
For the improvement the postharvest longevity of cut alstroemeria (Alstroemeria hybrida L.), a factorial experiment was carried out based on RCD with 2 factors of stem end splitting at two levels (5 cm splitting...
[b]Investigation of the Impact of Benzyladenine and Several Natural Compounds on the Vase Life and Some Qualitative Traits of Tuberose Cut Flowers[/b]
Tuberose (Polianthes tuberosa) is one of the most important cut flowers with fragrant buds. To prolong vase life of tuberose, proper preservative solution applying is necessary. For this purpose, two types of che...
The Effect of Natural Essential Oil Carvacrol and Some Growth Regulators on Vase Life of Cut Flowers of Alstroemeria cv. Bridal
The abscission of Alstroemeria petals is the serious problem at the industry of cut flowers of this plant. In this study, cut Alstroemeria cv. Bridal flowers were pulsed with solutions containing natural essential...