Comparative study on the effect of soil and foliar application of nitrogen fertilization on growth and productivity of Egyptian clover (trifolium alexandrinum, l) [electronic resource].

Includes references.

Two field experiments were conducted during 1998/1999 and 1999/2000 seasons to study the effect of nitrogen fertilization as soil and foliar applications on the growth, nodulation and fresh and dry yields of Egyptian clover. The results obtained indicate that various nitrogen fertilization treatments had no significant effect on root diameter. However, the number of nodules grown on the root were increased significantly by nitrogen fertilization up to 20 kg N/fad. three doses (T3) as a soil application and up to 2kg urea / fad. six doses (T7) as a foliar application . Plant height, stem diameter, number of branches / plant, leaf area, and leaf weight ratio as well as fresh and dry forage yields reached their maximum peak by the soil application of 20 kg N/fad. three doses (60 kg N/fad. T3) compared to the other tested treatments. However, foliar application of 2 kg urea / fad. six doses (5.52 kg N/fad. T7) seemed to be the most effective for increasing those traits as compared with the other soil application treatment (T2) and /or foliar ones (T4, T5 and T6).

Summary in Arabic.

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