Memoire de 3e cycle en agronomie sur le chene vert (Quercus Rotundifolia Lamk ) et le chene zeen (Quercus canariensis willd) dans la foret de Jaaba au. See more of DZplante on Facebook. Log In. Forgot account? or. Create New Account. Not Now. English (US) · Español · Português (Brasil) · Français (France) ·. Suddenly, at a bend in the hill-path, where the wide branches of the cork oaks, the ilex, and the chêne-zeen met overhead, and the giant aloes grew abundantly, .

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Remember Me Log in Forgot Login? Reforestation efforts, in terms of production of lumber and industrial wood, both in quality and quantity, remain dependent on the application of appropriate silvicultural methods pruning, thinning.

You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. For zeen oak, chhene growth rate in diameter inside the vented tree shelters was similar to that of the control, whereas average growth rate in diameter inside the non-vented tree shelters was significantly lower by zesn 1 mm each year.

Plantix – Monday, 10 July Holstein cows, lactation, Wood, Gamma, season of calving. Humidity content ranged from 3.

The use of mulching alone or in combination with tree shelters seemed to be useless for both oaks. Research and Practice – Thursday, 01 November Three organic mulches Italian Stone Pine, Lentisk, a combination of Italian Stone Pine and Lentiskan inorganic mulch gravel and no mulch and two tree shelter types non-vented, vented and control were tested. Ina second inventory was carried out, where we noticed an increase in number of trees and cjene in volume which could be explained by a strong regeneration by sowing in the maquis, the enclaves and after the passage of fires and a lack of application of specific silviculture to these stands, something that we propose in this study that takes into account the social problem and able to ensure the sustainability, the preservation of the forest ecosystem and the production of wood.


Agri & BioTech – Journal of New Sciences

Adobe Photoshop Lightroom 5. The phenotypic correlations between different weights were positive and ranging from 0. This article is published under license to Journal of New Sciences.

Maritime pine, pruning, thinning, inventory, silviculture, volume. A total of milk test days of 67 cows in herds during was used in this study. A linear model was developed, including herd-test day, farm ownership, calving month, calving year, and lactation number, test year, age of cow and milk test number. By using this site, you agree to the Terms of Use and Privacy Policy. Summary [ edit ] Description Yakouren 2. This image was uploaded as part of Wiki Loves Earth Copyright This article is published under license to Journal of New Sciences.

If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. In Tunisia, Holstein dairy cattle produced differently according to their calving month. Mourning on behalf of Pr.

File:Yakouren – Wikimedia Commons

Publication d’un nouveau ouvrage de Mr. Tree shelters did not have a significant effect on the seedlings survival rate for both oaks, whereas they significantly improved their height growth compared to unsheltered seedlings; average growth rate in height inside non-vented and vented tree shelters was each year significantly greater, respectively, by 7. This is because of the site fertility where the experimentation was carried out. The estimated heritabilities ranged for the first group from 0.


File:Yakouren 2.jpg

Milk, composition, quality, transformation, drying. The objectives of this study were to: The objectives of this study were 1 to identify the different shapes of lactation curves of Holstein cows under North Africa Tunisia prevailing production environments and 2 to estimate parameters of the most dominant lactation curves found by season.

Sector, age of dam, sex-mode of birth, and farm-herd-year-in-season combination were found to be the cnene factors that significantly affect lamb growth from birth to weaning at 90 days.

The density at that time was plants per hectare and plants throughout the serial. I, the copyright holder of this work, hereby publish it under the following license:.

In fact, the fat content, protein content and defatted solids content of the different batches of skimmed milk powder were heterogeneous and ranged from 0 to 1.

Views Cene Edit History. The REML method was used for estimating heritability. The incomplete gamma function was used to adjust milk lactation curves per calving season.

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