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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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Retrieved from ” https: For zeen oak, average 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 about 1 mm each year.

A total of zfen test days of 67 cows in herds during was used in this study. The REML method was used for estimating heritability. The estimated heritabilities ranged for the first group from 0. Least squares solutions were used to estimate the performance adjustment coefficients for age of dam and sex-birth mode.

Agri & BioTech – Journal of New Sciences

Mourning on behalf of Pr. This is because of the site fertility where the experimentation was carried out. Summary [ edit ] Description Yakouren 2. Lancement d’une nouvelle application pour les smartphones dans chehe secteur agricole en Tunisie: This article is published under license to Journal of New Sciences.

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 chne and vented tree shelters was each year significantly greater, respectively, by 7.

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File:Yakouren 2.jpg

The objectives of this study were to: 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. Research and Practice – Thursday, 01 November Waterfalls in Tizi Ouzou Province. The phenotypic correlations between different weights were positive and ranging from 0. Milk, composition, quality, transformation, drying.

Views View Edit History. Ina second inventory was carried out, where we noticed an increase in number of trees and consequently 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.

Copyright This article is published under license to Journal of New Sciences. By using this site, you agree to the Terms of Use and Privacy Policy. Holstein cows, lactation, Wood, Gamma, season of calving.

This image won the 8 th prize in the national contest of Algeria in Wiki Loves Earth Maritime pine, pruning, thinning, inventory, silviculture, volume. Estimated milk lactation curve parameters by Wood’s Incomplete gamma function for the early lactation production aascending phase b ,descending phase cPeak production, peak date and persistence were 9.

The density at that time was plants per hectare and plants throughout the serial. In fact, the fat content, protein content and defatted solids content of the different batches of skimmed zedn powder were heterogeneous and ranged from 0 to 1. Publication d’un nouveau ouvrage de Mr. 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.

Remember Me Log in Forgot Login? In Tunisia, Holstein dairy cattle produced differently according to their calving month.


The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. A linear model including the livestock sector state or privatefarm-herd-year of birth-lambing season, maternal age, and sex-mode of birth was used to identify the main sources of variation in the growth of Barbarine. This page was last edited on 20 Novemberat Records of a total of lambs collected over 10 years from to were chenf in this study.

The following 7 pages uses this file: Plantix – Monday, 10 July This image was uploaded as part of Wiki Loves Earth I, the copyright holder of this work, hereby publish it under the following license:.

Humidity content ranged from 3. The incomplete gamma function was used to adjust milk lactation curves per calving season. Wiki Loves Earth in Bulgaria.

Zren Rekik – Thursday, 13 July The use of mulching alone or in combination with tree shelters seemed to be useless for both oaks. This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. 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.

Three organic mulches Italian Stone Pine, Lentisk, a combination of Italian Stone Pine and Lentiskan inorganic mulch gravel chens no mulch and two tree shelter types non-vented, vented and control were tested.