Effect of Sulfur and Stabilized Ammonium Nutrition on Nutrient Uptake by Wheat in Clay and Calcareous Soils

Abstract

SUMMARYA pot experiment was set up to study the effect of urea, Ca(NO 3 ) 2 and urea + nitrification inhibitor in the presence or absence of sulfur on the growth and nutrient uptake by wheat plant. Alluvial and calcareous soils were chosen for these experiments. Wheat seeds were sown and planted in 5 Kg soil packed in plastic pots at the rate of 15 seeds/pot. The plants were thinned 15 days after emergence to obtain ten seedlings per pot. Plant materials at three different growth stages were analyzed for their content of the different nutritional elements. At the end of the growing season plants were harvested (straw and grains) for analysis. Fe percentage and uptake generally increased with increasing S and N applications; the effect of S was more than that of N in that respect. Sulfur application to urea increased Fe concentration and its uptake compared to urea alone. Nitrification inhibitor increased Fe concentration in grains, which increased even more with sulfur addition. Iron content seemed to be affected by different N-forms, sulfur and by nitrification inhibitor treatment. Urea stimulated Fe content in wheat grains as compared with calcium nitrate. ES application was not effective in increasing Fe contents in wheat grains. Application of nitrification inhibitor increased Fe concentration in wheat grains. Urea + inhibitor had a predominant effect on N-uptake by wheat plant. Sulfur application resulted in an increase in N content as well as N-uptake in clay soil. Phosphorus absorption was positively influenced by the addition of nitrification inhibitor.

Effect of Nitrogen and Sulphur Fertilization on Chlorophyll Content in Winter Wheat

“…Nitrogen fertilizer with sulphur (N175+S21) helps to achieve the highest chlorophyll content in leaves, stems and ears in two years. Scientists Selim and Mahmoud (2015) conclude that additional sulphur fertilizer plays a positive role for improving nitrogen uptake in wheat grains. Study in Estonia (Jarvan et al, 2012) indicated that the application of sulphur containing fertilizers on break-stony soil increased grain yield (21%) and protein content.…”

Evaluation of acidifying nitrogen fertilizers in avocado trees with iron deficiency symptoms

“…In order to improve the effectiveness of the positive effects induced by NH 4 + in Fe nutrition, it may be important to employ strategies focused on maintaining the NH 4 + concentration in the soil at medium-to-low levels by slowing down the oxidation of NH 4 + exerted by the activity of Nitrosoma bacteria (Zerulla et al, 2001). In such a context, the use of nitrification inhibitors applied to the soil may contribute to optimizing N and Fe nutrition simultaneously as well as to reducing In a controlled experiment conducted on wheat, the application of NH 4 + with DMPP increased Fe concentration in grains (Selim and Mahmoud, 2015).…”