Nutrients uptake and yield quailty of soybean as affected by bio and organic nitrogen fertilizers [electronic resource].

Includes reference.

Two field experiments were carried out during the two growth season of 2006 and 2007 at EI-Qntra East region, Ismailia Governorate, Egypt to investigate the response of soybean plant to the application of N-fertilizers from different sources i.e., ammonium sulphate (A.S) as a mineral N-fertilizer at two levels of 119 and 238 kg N ha⁻¹, respectively, compost manure (Co.M), farmyard manure (FYM) and town refuse (T.R) were added at the rate of 15 Mg fed⁻¹ as organic N-Sources. Bio N fertilization was achieved through inoculating the seeds with an effective strain of (Bradyrhizobium japonicium) for increasing and enhancing nitrogen fertilization efficiency as well as yield, seed quality, nutrient u take of soybean (Glycine max L. cv Giza 35). The obtained results could be summarized as follows: 1) Number of branches and 1000seed weight as well as aero and micronutrients contents were significantly increased as a result of applied different organic and bio N-sources and their combinations compared to AS treatment. 2) Seed oil yield and protein yield (kg red.-I) were increased significantly and the individual effect of organic N-sources and bio fertilization showed a descending increase in the order of Bio. > Co.M > FYM > T.R. 3) The highest available N, P and K as well as Fe, Mn, Zn and Cu content in soil after harvest were obtained doe to t e treatment of Co.M + FYM + T.R + B•o. and 4) The treatment of Co.M + FYM +T.R + Bio.+ A.S (119.0 kg N ha.⁻¹) was superior to the other treatments.

Summary in Arabic.

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