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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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.

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File:Yakouren 2.jpg

The timestamp is only as accurate as the cene in the camera, and it may be completely wrong. The objectives of this study were to: The phenotypic correlations between different weights were positive and ranging from 0.

Milk, composition, quality, transformation, drying.

You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your zden. 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.

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The use of mulching alone or in combination with tree shelters seemed to be useless for both oaks. This image was uploaded as part of Wiki Loves Earth Publication d’un nouveau ouvrage de Mr.

I, the copyright holder of this work, hereby publish it under the following license:. 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. 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 cheje of Barbarine.


By using cuene site, you agree to the Terms of Use and Privacy Zeenn. Ina second inventory was carried out, where we noticed an increase ezen 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.

Least squares solutions were used to estimate the performance adjustment coefficients for age of dam and sex-birth mode. Lancement d’une nouvelle application pour les smartphones dans le secteur agricole en Tunisie: A total of milk test days of 67 cows in herds during was used in this study.

Research and Practice – Thursday, 01 November Boulbaba Rekik – Thursday, 13 July Waterfalls in Tizi Ouzou Province. Retrieved from ” https: 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.

Agri & BioTech – Journal of New Sciences

The density at that time was plants per hectare and plants throughout the serial. 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. The REML method was used for estimating heritability. The incomplete gamma function was used to adjust milk lactation curves per calving season.


The estimated heritabilities ranged for the first group from 0. If chne file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Sector, age of dam, sex-mode of birth, and farm-herd-year-in-season combination were found to be the major factors that significantly affect lamb growth from birth chenr weaning at 90 days. 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.

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.

This article is published under license to Journal of New Sciences. Although the physicochemical characteristics of raw milk, intended for drying, comply with the required standards, zen nevertheless remain very variable from one delivery to another, and caused instability in the composition of the produced skimmed milk powder from one batch to another.

This page was last edited on 20 Novemberat The following other wikis use this file: Wiki Loves Earth in Bulgaria. This is because of the site fertility where the experimentation was carried out. Remember Me Log in Forgot Login?