| Abstract: |
A field experiment was conducted at EL-TINA PLAIN, Egypt using barley plant (Hordiu Vulgare,L ”Var., Giza 123”) during the winter season of 2007 / 2008. This investigation aims to study the effect of mineral-N and organic fertilization on: 1) the hydrological properties of the soil, 2) the plant growth “plant height and dry matter content”, 3) the uptake of macro nutrients (NPK), and 4) the yield productivity and yield quality “Protein content”.The recommended doses of phosphorus and potassium were added. Phosphorus was added as ordinary super phosphate (6.5% P) at the rate of 15 kg P fed-1. Potassium was added as potassium sulphate (41% K) at the rate of 30 kg K fed-1. Nitrogen was added as ammonium sulphate (20.6% N), ammonium nitrate (33% N) and urea (46% N) at the rates of 50, 75, 100 and 125 kg N fed-1, respectively.Farmyard manure (FYM 0.96 % N) was used as organic-N sources. The application rate was calculated according to its total nitrogen contents and thoroughly incorporated in the soil before planting at the levels of 0 and 3 Mg (i.e. 3000 kg) fed-1 respectively.The experimental design was a factorial randomized complete block design, involving 3 factor s: 1) FYM was added to the soil at the rates of 0 and 3.0 Mg fed-1 respectively, 2) N sources i.e. Ammonium sulphate, ammonium nitrate and urea were applied, and 3) N addition rates; N fertilizers were applied at the rates of 50, 75, 100, and 125 kg N fed-1 respectively.The experiment was irrigated by using the water of El- Salam Canal.Plant samples were collected at three different growth stages i.e. 45, 70 and 120 days from sowing; corresponding to tillering, booting, and maturity stage, respectively. Plant height, dry matter content, nutrients uptake ”NPK”, yield productivity, and yield quality “protein content” of barley plants were recorded.The obtained data reveal that the addition of FYM generally increased the water table depth and hydraulic conductivity in the soil. However, the application of mineral-N fertilizers as ammonium nitrate and/ or FYM increased the plant height, dry matter content, macro nutrients uptake (NPK), yield productivity and yield quality. The promoting effect of N fertilizers on plant height , dry matter content, macro nutrients uptake (NPK), yield and yield quality may follow the order of : ammonium nitrate urea ammonium sulphate.
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