INFLUENCE OF NITROGEN SOURCES ON GROWTH, YIELD, SOME MACRO AND MICRONUTRIENTS CONTENT OF MAIZE PLANT (Zea mays, L.) IN SALT AFFECTED SOILS | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 5, Volume 29, Issue 3, March 2004, Page 1589-1602 PDF (208.85 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2004.240847 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S.H. Sarhan1; M.R. Mohamed1; H.Z. Abd El-Salam1; M.M.A. Bader2 | ||||
| 1Plant Nutrition Dept., Soil, Water & Env. Agric. Res. Center, Giza, Egypt. | ||||
| 2Field crops Res. Inst., Agric. Res. Center, Giza, Egypt. | ||||
| Abstract | ||||
| Two field experiments were conducted at the Experimental Station of Agricultural Research Station at Tag EI·Ezz Dakahlia Governorate during 2000 and 2001 seasons. The used soil was salt affected one. The research aims to study the effect of N-NO'3, N-NH+4 or N-urea on yield and some characters of maize plant as well as macro-micronutrients content in ear leaves at maturity stage (physiological stage) and seeds. Single hybrid CS 10 of maize was used as testing plant within two seasons (2000 and 2001) and the soil salinity levels were 1.69, 5.3 and 11.10 dS/m in 2000, and 1.69, 5.43 and 11.10 ds/m in 2001 season, denoted as S" S2 and S3. The data show that, plant heighUcm. ear bladel cm2, ear diameterl cm, ear weighU gm, 100 grain weighUgm and yield (ardab/fed.) were reduced significantly in third level of salinity while ear length (cm) was not affected and order was S2 > S, >S3. There is no significant effect of N-sources on parameters under study except ear diameter/cm and 100 grain weight 10m which were affected significantly. Ammonium nitrate fertilizer gave the greater values than urea and ammonium sulphate. But the interaction effect between salinity levels and N-sources gave a significant differences at all studying characters. Yield was ex1remely reduced by 52.4% with increasing in salinity levels calculated the differences between the highest and the lowest values (mean for each salinity level). It was found that, P% in leaves increased Significantly with soil progress in soil salinity in both seasons. But K% increased significantly in 2001 season, while, N% decreased significantly at 2000 season. The concentration (ppm) of Zn, Fe and Mn were increased significantly with increasing the soil salinity levels. Urea gave the highest values for Nand P concentrations in leaves, where Ihe effect was a highly significant in both seasons, while ammonium nitrate gave highly Significant for K In 2000 season only. No Significant effect was found for N-sources on Zn (ppm) in leaves in both seasons. while Mn and Fe were affected significantly. Also, it was found that ammonium nitrate gave the highest values for Mn in both seasons and Fe in 2001 season only. The study also showed that the interactions between salinity and N-source on N concentration in leaves were reduced significantly in 2000 season but K, P, Mn, In and Fe were increased significantly in both seasons. Data show that N, P, K and Fe concentrations in seeds were increased significantly in third levels of soil salinity in most seasons whereas Mn and Zn insignificantly increased. The data revealed that. ammonium nitrate fertilizer gave the greatest value for N, P and K percentage in seeds, but urea fertilizer gave the greatest values for Mn, Zn and Fe concentrations in seeds in both seasons. The data showed that, the differences between N-sources and nutrient elements were significant except In. The interaction effect between salinity and N-source in N% and Fe (ppm) in seeds were increased significantly as salinity increased in both seasons. It can be conclude, from this study and data discussion that, soil salinity and fertilizers have confounding effects on plant characters and nutrient status of maize crop. Therefor it needs more research to clarifying these points in field (soil-salt system). | ||||
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