Humulus lupulus L. (Cannabaceae): A new record for Uttarakhand

2018 ◽  
Vol 25 (4) ◽  
pp. 243-244
Author(s):  
Rajni Kant Thakur ◽  
◽  
Kapil Kharkwal ◽  
Bipin Kumar Sinha ◽  
◽  
...  
Keyword(s):  
Plant Species ◽  
New Record ◽  
National Park ◽  
Humulus Lupulus ◽  
Himachal Pradesh ◽  
Economic Plant ◽  
Humulus Lupulus L ◽  
First Time

Humulus lupulus L. (Cannabaceae), an economic plant species, so far reported from Himachal Pradesh and Jammu & Kashmir, in India is now being reported for the first time from the Valley of Flowers National Park as a new distributional record for Uttarakhand. Detailed description and photoplate of the taxon are provided for identification in the field.

CEUTORHYNCHUS LITURA (F.) (COL. CURCULIONIDAE), A POTENTIAL INSECT FOR THE BIOLOGICAL CONTROL OF THISTLE, CIRSIUM ARVENSE (L.) SCOP., IN CANADA

1966 ◽  
Vol 44 (1) ◽  
pp. 23-38 ◽  
Author(s):  
H. Zwölfer ◽  
P. Harris
Keyword(s):  
Biological Control ◽  
Plant Species ◽  
Control Agent ◽  
High Density ◽  
Cirsium Arvense ◽  
Effective Control ◽  
Phytophagous Insects ◽  
Economic Plant

The suitability of Ceutorhynchus litura for the biological control of Cirsium arvense in Canada was evaluated. It is concluded that introduction of C. litura is justified on the grounds that its feeding is restricted to a group of three systematically related genera, Cirsium–Silybum–Carduus. This host pattern is highly stable, and probably prepleistocene in origin, and does not include any economic plant species. C. litura is compatible with phytophagous insects already present on C. arvense in Canada and its establishment should not prejudice the introduction of other European insects against the weed. C. litura is, however, subject to a number of ecological restrictions and is only likely to be an effective control agent in cultivated fields where it can build up a high density over several years.

Determination of importance value indices of some plant species using closest individual sampling techniques

2020 ◽  
Vol 34 (1) ◽  
pp. 79-85
Author(s):  
F.O. Ezulike ◽  
C.G. Ukpaka ◽  
B.C. Chinyere
Keyword(s):  
Plant Species ◽  
Crop Production ◽  
Economic Plant ◽  
Importance Value Index ◽  
Importance Value ◽  
Chi Square ◽  
Level Of Significance ◽  
Chi Square Analysis ◽  
The University

This study was conducted to determine the Important Value Indices (IVI) of some plants in the University farm. Eighty plant stands belonging to three families (Musaceae, Caricaceae and Arecaceae) were identified. Their frequency and coverage percentage were measured within the sampling plot. Data obtained were subjected to Chi-square analysis to test for significance at 5% level of significance. The results indicated that the mean richness of Caricaceae, Arecaceae and Musaceae species in the study area were 3, 2 and 6, respectively. The highest (p<0.05) Floral Value Index of 90.52 was recorded in plantain group while the least value (22.40) was recoreded in coconut. The relative density ranged from 7.5 to 45 for the genus Cocos l. and Musa l. The highest Relative Frequency (46.03 %) was recorded for Musa l. and the least in Cocos l respectively. The Important Value Indices ranged between 20 and 152 which indicated that Igbariam had a very rich Agricultural soil for Economic plant development particularly for the families of Musaceae. The Musaceae showed the maximum IVI, hence the most important family among the studied plant species in the Agricultural farm plot. Thus, it is concluded that Musaceae, particularly plantain, should be given special consideration in prioritizing species for crop production in the study area. Keywords: importance value index, family importance value, plant, species, Musaceae

Identification of water conservative tree species with high economic value around “Sendang Kalimah Toyyibah”

2017 ◽  
Vol 19 (2) ◽  
pp. 104
Author(s):  
Erry Wiryani ◽  
Sutrisno Anggoro ◽  
Sri Mulyani
Keyword(s):  
Plant Species ◽  
Economic Valuation ◽  
Economic Value ◽  
Economic Plant ◽  
Land Utilization ◽  
Literature Study ◽  
Flower Bud ◽  
Importance Index ◽  
Line Transects ◽  
Conservative Function

Spring conservation require serious concern on the economic advantages for the society. Without economic advantages achieved from the conservation activities, the conservation programme should face intense conflict of land utilization. Plantation of economically valuable conservative plant species is one of the proposed solution to overcome the problem. This research aimed to identify the economic value of conservative plant species found in “Sendang Kalimah Toyyibah” surrounding. Research was conducted through field observation involving 4 line transects and 4 square transects at each line with transect size of 20 m x 20 m. Plant identification was conducted for tree strata. Data analysis was including diversity, evenness and importance index of respective plants. Economic valuation was conducted through literature study. The result showed there were 28 plants species availabile in “Sendang Kalimah Toyyibah” surrounding. Among the plant species 22 of the had been identified to provide conservative function, while 6 of them weren’t including Banana, Papaya, Melinjo, Pangi, Longan and Stink Bean. Instead of providing conservative function, most plants also provide economic advantages including wood, fruit, flower, bud, leaf, fibre, sugar, peel and bean products while only 3 of them were not identified including Banyan, Manila Tamarind and Amboyna Wood. Plantation of economically valuable conservative plant species is recommended to support the conservation of the spring as well as to provide economic advantage for the society. Keywords: conservation, economic, plant, “Sendang Kalimah Toyyibah”, spring

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