Print ISSN: 2077-5822

Online ISSN: 2618-1479

Keywords : Correlation

Assessment of Erosive Activity By Modeling Approach in Northern Algeria

Chellali Rachid; LADJAL Rabah

Al-Qadisiyah Journal For Agriculture Sciences, 2021, Volume 11, Issue 2, Pages 32-36
DOI: 10.33794/qjas.2021.131886.1011

The erosive activity in the Cheliff watershed (Algeria) draws its magnitude from the climatic, geological and geomorphometric conditions that characterize this region. Indeed, the high spatio-temporal variability of precipitation caracterising the semi-arid climate, coupled at a very pronounced relief with vulnerable lithologic composition amplified the phenemon.
The extended no taring of the main hydrometric station, located at the exutory of Nahr Ouassel sub-watershed, makes inevitable the use of quantification by modeling. Moreover, the endoreism of the flows in the sub-basin prevents any significant correlation between rainfall and flows, which justifies the extrapolation of an adequate model.
The regional model adopted in this study was established from the data of several hydrometric stations and dams through northern Algeria. The Bougara dam sub-basin was used for its validation.
The main objective of this work is to estimate the specific degradation of Nahr Ouassel sub-watershed using an adequate model.

Evaluation of Genetic behavior of Sunflower (Helianthus annuus L.) As Effect by Planting Dates

Haider T. Hussein; Abdullah F. Serheed

Al-Qadisiyah Journal For Agriculture Sciences, 2019, Volume 9, Issue 1, Pages 43-49
DOI: 10.33794/qjas.2019.162664

Afield experiment was carried out during the spring and autumn seasons of 2016 and 2017 in AL- Musaib city / 40 km north of Babylon Provence. Two hybrids of sunflower( shamus, French hybrid (Euroflor) were used to evaluate the performance of the two cultivars at both growing seasons as well as knowledge of genetic behavior by studying the genetic and phenotypic variations, heritability percent, genetic and phenotypic coefficient, stability and persistence of the two cultivars .
The results showed significant differences of the studied traits, as the genetic genotype (Shamus) most of the characteristics, especially in yield for two seasons.
The genetic variance was higher than the environmental variance for the two seasons indicating that the two cultivars followed the same behavior. The heritability percent the dominant sense was high for most of the traits. The genetic and phenotypic variations between the mean and the high were different for the two seasons, the correlation coefficient was significant, for both cultivars, indicating the appropriateness of the two genotypes for the country's environmental conditions..

Study of Correlation and Path Analysis Between Grain Yield and Yield Related Traits in Wheat

Reem Al-edelbi; Maysoun M. S; Salih H. F. Al-salim; Naoman S. M.

Al-Qadisiyah Journal For Agriculture Sciences, 2017, Volume 7, Issue 1, Pages 74-84
DOI: 10.33794/qjas.2017.124095

Agricultural experiment carried out during the 2014-2015 agricultural season winter wheat planting classAba99in tow sites Al-Shattra and Al-Dwayah in Al-Naseriah Explanatory farmers' fields covered by the national program for the development of the cultivation of wheat in Iraq and four treatments were applied on wheat(Laser plus weed controlling, Laser plus weed controlling plus sulfur, Laser plus weed controlling plus sulfur plus other elements, Control for comparing), in Randomized Complete Block Design RCBD with three replications, Correlations and path coefficient analysis between (number of brunches, Spike Length, number of spikes/m2, grains number per spike, thousand grain weight and plant grain yield),
Results showed that grain yield had a positive significant correlation with each of number of spikes/m2 and grains number per spike (0.711**, 0.465**) respectively.
Results of path coefficient analysis showed that the direct effect of number of spikes/m2 on grain yield was high and positive(0.5350), while the indirect effectsfor each of number of brunches and number of grains per spike and thousand grain weight on grain yield wasmedium and positive (0.2571, 0.2557, 0.2434) respectively, and also the indirect effect for grain number per spike on grain yield through number of spikes/m2 was positive and medium(0.2479).
Results also showed that number of spikes/m2 had the highest contribution in yield as a direct effect 28.621%, followed by the corporate effect of number of spikes/m2 and number of grains in spike12.674%.