تأثير التسميد الحيوي و العضوي و المعدني في جاهزية بعض المغذيات في التربة و تركيزها في النبات لمحصول القرنابيط Brassica Oleracea Var. Botrytis

الملخص EN

A Field Experiment was carried out at the Soil Research Station of the Agricultural Research Department/Ministry of Agriculture in order to study the effect of biological, organic and mineral fertilizers and their interaction on the availability of some nutrients (nitrogen, phosphorous and potassium) in the soil and its concerted in the leaves flowering stage of cauliflower (Steady var).

The experiment included 32 treatments with three factors, the first factor was four types of biofertilizer (without addition, the combination of Azospirillum brasilense + Azotobacter chroococcum, the combination of Glomus mosseae + Trichoderma harzianum, the combination of bacterial and fungal biofertilizer), the second factor included the organic fertilizer that was added With four types (without addition, Vermicompost, Orgevit, and a combination of Vermicompost and Orgvit) and the third factor is the mineral fertilizer that was added at two levels (non-addition, adding 50% of the fertilizer recommendation for cauliflower) with three replications for each treatment with a treatment to which the full fertilizer recommendation (NPK 100% ) was added with three replicates as a second comparison treatment, the treatments were distributed in a factorial experiment according to a randomized complete block design.

the results showed a significant difference between the treatments of the triple interaction of bio, organic and mineral fertilizers.

Orgevit with 50% of the mineral fertilizer recommendation affect significantly in all studied attributes, whether In the soil or the plant, it led to a significant superiority in the content of leaves and soil of nitrogen, phosphorous and potassium for the two stages of flowering, as the values of nutrient concentrations in the leaves reached (4.69% N, 0.69% P, 6.07% K), while the soil nutrients availability were (95.63 mg N kg-1 soil, 55.36 mg P kg-1 soil, 450.21 mg K kg-1 soil) compared with the control treatment, which gave the lowest averages for all the above-mentioned attributes, as well as a number of triple interaction treatments were superior to the full fertilizer treatment in all of these attributes.