الفهرس 
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Abstract
The target of this study was studying the influence of replacement of mineral N fertilizer in Sewy orchard by using humic acid and effective microorganisms on fruiting of the palms.
This study included the following 9 treatments:
1) Using the recommended N (1000 g N /palm/ years) as 100 % mineral N (2985.1 g ammonium nitrate 33.5%N / palm/ year).
2) Using the recommended N as 75% mineral N (2238.8 g ammonium nitrate / palm / year) alone.
3) Using the recommended N as 75% mineral N + humic acid and effective microorganisms (EM1) each at 10 ml/palm/year.
4) Using the recommended N as 60% mineral N (1791.1 g ammonium nitrate / palm / year) alone.
5) Using the recommended N as 60% mineral N + humic acid and effective microorganisms (EM1) each at 15 ml/palm/year.
6) Using the recommended N as 45% mineral N (1343.3 g ammonium nitrate / palm / year) alone.
7) Using the recommended N as 45% mineral N + humic acid and effective microorganisms (EM1) each at 20 ml/palm/year.
8) Using the recommended N as 30% mineral N (895.5 g ammonium nitrate / palm / year) alone.
9) Using the recommended N as 30% mineral N + humic acid and effective microorganisms (EM1) each at 25 ml/palm/year.
CONCLUSION:
Treating Sewy date palms with N (1000 g N/palm/year) via 60% mineral N plus 15 mL humic acid and EM 1/palm/year gave the best results with regard to yield. Quality of the fruits was greatly improved on using N as 30% mineral N plus humic acid and EM 1 each at 25 mL/palm/year.