COMBINED EFFECT OF BIO-ORGANO-FERTILIZATION AT DIFFERENT N-LEVELS ON: 1- YIELD, GRAINS QUALITY, VIABILITY AND ACTIVITY OF -AMYLASE OF TWO WHEAT VARIETIES | ||||
| Journal of Plant Production | ||||
| Article 1, Volume 25, Issue 6, June 2000, Page 3039-3051 PDF (575.57 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2000.258946 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| F. I. Zein,1; Nadia A. El-Aidy2; M. Nour El-Din1 | ||||
| 1Soil Water and Environment Research Institute, ARC, Giza, Egypt | ||||
| 2Dept. of Seed Technology, Field Crops Research Institute, ARC, Giza, Egypt | ||||
| Abstract | ||||
| Combined effect of bio-organo-fertilization; Azotobacter inoculation and/or farmyard manure (0.5% by weight) at N-levels; 20% (N1), 60% (N2) and 100% (N3) of recommended dose (70 kg N/fed) on yield, grains quality, viability and activity of a-amylase of two wheat varieties; Sakha 8 (V1) and Sakha 92 (V2) on field were studied. Two field experiments were carried out at Sakha Agric. Res. Station during 1997/98 and 1998/99 winter seasons. The obtained results showed that: Increasing nitrogen fertilizer levels from N1 to N2 or N3 significantly increased grain, straw and total yields at the first season while increased grain yield only at the second season. Also, there were no detectable difference in grain yield between N2 and N3 treatments in both seasons. Bio-organo treatments highly significantly increased grain, straw and total yields for the two studied wheat varieties. Combination of Azotobacter inoculation with farmyard manure was, generally the most efficient treatment in increasing grain, straw and total yields under all studies nitrogen levels. Increasing nitrogen fertilizer levels with using bio-organo-fertilization significantly increased protein and decreased nitrogen free extract content of the grains while ash and crude fiber contents did not differ significantly. Using different levels of nitrogen with the tested kind of bio-organo-fertilization had highly significant effect on a-amylase activity, grains produced under Azotobacter treatment recorded the highest value of a-amylase activity. Neither variety nor bio-organo-fertilization and their interactions do not affected on seed germination. While their were highly significant differences in seed germination with using N levels. The radical and shoot length of the two tested varieties were highly significant different between nitrogen levels and bio-organo-treatments, while no differences were observed on seedling dry weight between treatments. The results indicated, under the studied conditions, the possibility of saving 28/kg of nitrogen/fed of N-fertilizers, without affecting grains yield, germination, seedling vigour and a-amylase activity of the grains. | ||||
| Keywords | ||||
| Bio-organo-fertilization; wheat; Azotobacter; farmyard manure; viability -amylase | ||||
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