A field experiment was carried out during the two successive fall seasons of 2014 and 2015 in a private farm at DamaloVillage, QalubiaGovernorate in clay soil, to investigate the effect of three nitrogen sources and foliar spray with some safety compound i.e., compost tea, seaweed extract (Algreen), micronized calcium carbonate (Lithovit) and distilled water (Control) on growth, chemical composition and productivity of snap bean (Phaseolus vulgaris L.) cv. River Grow. This experiments included 12 treatments resulted from the interaction between four foliar applications with safety compound treatments and three nitrogen sources (Chicken manure, Rabbit manure and mineral fertilizer) used at recommended dose of nitrogen (60 kg N/fed.). Obtained results showed that, Rabbit manure at 2.6 t/fed. reflected the highest values of early and total yield in both seasons. In this respect, safety compounds-sprayed plants showed its superiority in the vegetative growth, total produced green pods yield and its components as well as pod quality as compared with the control (distilled water). In addition, using Lithovit at 3 g/l followed by Algreenat 2 cm3/lcombined with rabbit manure or mineral fertilizer as soil addition reflected the highest values in all studied growth and yield traits.
Thereby, it could be recommended that foliar application with micronized calcium carbonate (Lithovit) as safety compound with mineral fertilizeror rabbit manure (as asource of nitrogen) could be used to improve growth, chemical composition, productivity and quality of snap bean.
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