THE RESIDUAL EFFECT OF RICE N-BIOFERTILIZATION AS POTENTIAL ECONOMIC FOR MINERAL NITROGENOUS FERTILIZATION OF WHEAT CROP. | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 2, Volume 2, Issue 7, July 2011, Page 733-746 PDF (535.06 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2011.55657 | ||||
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| Authors | ||||
| Z. M. El-Sirafy1; A. M. Abd-El-Hameed2; Rasha E. H. El-Mahdy2 | ||||
| 1Soils Dept., Faculty of Agriculture, Mansoura University, Egypt. | ||||
| 2Plant Nutrition Dept., Soil, Water and Enviro. Res, Ins., Agric. Res. Center. | ||||
| Abstract | ||||
| This study was conducted during winter seasons of (2009-2010) and (2010-2011) at Meet Louza Village, Mansoura Province, Dakahlia Governorate, Egypt on a silty clay soil to find out the residual effect rice N-biofertilization on the next wheat crop (Triticum aestivum L. c.v. sakha 93). Biofertilization 8 treatments involving inoculums of Azolla (Azl), Azospirillum (Azs), Azotobacter (Azt), and Cyanobacreria (Cyn) as well as mixtures (Azl + Azs), (Azl + Azt), (Azs + Azt) and (Cyn + Azt) which take the same location with the same layout of the experimental field for the previous crop (rice), soil N- fertilization (4 treatments of control, 12.5 %, 18.75 and 25 % of N-recommended level 75 kg N fed-1 as urea) were tasted in a split plot design with three replicates. The most important finding could be summarized as follows: Treatment of 25 % N-level led to highest increases for plant height, grain yield, chlorophyll (a) and (b) content and the highest values were (101.27cm, 1.57 Mg fed-1, 13.55 mg g-1 f.w and 8.95 mg g-1 f.w) for the previous parameters, respectively. Although, the highest straw yield, N, P, K, Fe, Mn and Zn uptake by grains of (1.31 Mg fed-1, 26.17, 4.27, 4.67 kg fed-1, 106.23, 47.91 and 48.33 g fed-1), were recorded at 18.75 % N-level, respectively. The highest mean value of caroteniods (2.75 mg g-1 f.w). achieved at, control treatment. Inoculation of (Azl) gave maximum plant height and Mn-uptake of ((98.16 cm and 47.47 g fed-1), respectively. The highest grain, straw yields, caroteniods, N, K, Fe and Zn uptake were due to (Azs) Inoculation which were (1.84, 1.40 Mg fed-1, 3.48 mg g-1f.w, 27.13, 5.21 kg fed-1, 18.87 and 49.65 g fed-1) respectively, the highest P-uptake of (4.32 kg fed-1) occurred with (Azt). While (Azs+Azt) revealed the highest values (15.05 and 10.25 mg g-1f.w) for chlorophyll (a) and (b) content, respectively. The combination of 25 % N-level with (Azl, Azs, Cyn, Azs +Azt, Azs and Cyn + Azt) inoculations, gave superiority plant height (106.38 cm), grain yield (1.95 Mg fed-1, chlorophyll (a), (b) (15.52, 13.39 mg g-1 f.w), Fe and Mn uptake of (137.32 and 55.49 g fed-1), respectively. The superiority average values of straw yield (1.53 Mg fed-1), N and Zn uptake (32.01 kg fed-1and 57.01 g fed-1), release from organic and inorganic (30.25ppm), N-uptake % (67.92%) and N-recovery % (61.66%) occurred with combination of (18.75%N-level + (Azl+Azs)), but 18.75 % N-level combined with (Azl) and (Azs) respectively gave highest P-uptake of (4.90kg fed-1) and K-uptake of (5.88 kg fed-1). The uppermost caroteniods (3.71 mg g-1f.w) occurred with the combination of (12.5% N-level + Azs) and The superiority net return (3060 £.L. fed-1.) of wheat crop, was given by combination of (25 % N-level + Azs). | ||||
| Keywords | ||||
| N-fertilization; residual effect of rice N-biofertilization; and wheat plant | ||||
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