تأثير كومبوست نشارة الخشب و سماد الأبقار و السماد المعدين في بعض الخصائص الفيزيائية و المائية للترب الطينية و في بعض المؤشرات المورفولوجية و الإنتاجية للفول

Abstract EN

This research was conducted at Al-Nashabiyeh Research Station in the Damascus countryside area in Damascus Governorate (Syria) for the years (2020 and 2021) in order to study the effect of the following types of fertilizers (compost sawdust, municipal fertilizer, mineral fertilizer) on some physical properties of clay soils (bulk density, porosity, field capacity) and some morphological indicators of beans (plant height, number of pods, weight of pods).

The results of the study show that the addition of organic amendments reduced the bulk density of the study soil, and the sawdust compost was outperformed.

The statistical analysis also shows the positive effect of different types of organic amendments on the total porosity of clay soil.

Where the changes in porosity were significant for all treatments compared to the control.

The results showed a decrease in the wilting point with adding of organic amendments, where significant differences appeared for all the organic fertilizer treatments compared to the control and mineral fertilizers.

The addition of organic amendments significantly raises soil moisture content at the field capacity and increases the percentage of available water in the soil, where significant differences were observed for the organic fertilizer treatments compared with the control and the mineral fertilizer treatment.

The results of the statistical analysis of productivity and morphology indicators show the superiority of all fertilization treatments with significant differences over the control, where the treatments of mineral fertilizer and sawdust compost recorded the highest value, then the treatment of municipal fertilizer.