Effect of nitrogen fertilization on the nutritional quality of wheat variety, Yecora Rojo

Abstract

The effects of N-fertilization on the nutritional quality of short-straw wheat variety, Yecora Rojo, was studied under sprinkler irrigation system, The fertilizers applied were the conventional N-fertilizer, urea (U) applied as single dose or in three split applications (U-S), and the slow release N-fertilizers, ureaform (UF) (38% N and 20 N), osmocote (OC) with 9 or 14 months longevity and sulphur-coated urea (SCU) with either 17% or 37% dissolution rates in 7 days. These fertilizers were applied at 0 (control), 75, t25, and 175kg/ha during the 1982-1983 season. Results indicated that at 75 kg/ha there was no significant change in the protein content. At 125kg/ha, the protein content increased (P < 0.05) with urea (applied in three split applications) and OC. At 175 kg/ha, all the fertilizers increased the protein content with the exception of urea (applied as single dose) and UF. Ash content tended to decrease with increasing levels of N, while fat and crude fiber were unaffected. All the fertilizers increased the protein yield (kg/ha), the maximum increase occurring with the slow-release N fertilizers, OC and SCU. Except UF, aI1 the fertilizers decreased the lysine content significantly (P < 0.05) in the protein moeity at 175 kg/ha level but lysine percentage in the grain was not reduced. The yield (kg/ha) of individual amino acids including lysine was increased several times at the 175 kg/ha level. P content tended to decrease while Fe and Zn increased with fertilization. Slow-release N-fertilizers, OC and SCU as well as urea (in 3 split applications) appear to have a significant positive effect on the nutritional quality of the grains of wheat variety, Yecora Rojo.

Effects of Nitrogen plus Sulfur Fertilization and Seeding Density on Yield, Rheological Parameters, and Asparagine Content in Old Varieties of Common Wheat (Triticum aestivum L.)

“…Our study indicated a strong effect of N and S fertilization on PC and PY production. These results were consistent with previous findings in 'modern' common wheat varieties [45][46][47][48][49]. Likewise, Guerrini et al (2020) [7] reported that S and N fertilization substantially affected the PC in 'old' varieties.…”

Impact of Nitrogen Forms and Levels on Yield and Quality of Rice in Kirinyaga and Kisumu Counties Kenya

“…Moreover, this process is an added advantage at this stage since there are less nitrogen losses from the field hence reducing the farmers' production costs. In another research [26], it was found out that slow release fertilisers like urea led to a significant increase in grain protein content of cereals crops such as the wheat and rice. The slow release N fertilisers are effective in maintaining a balanced uptake of applied N that matches the needs of the crop at different growth stages.…”

Effect of nitrogen and manure fertilizer on grain quality, baking and rheological properties of wheat grown in sandy soil

“…Thus combinations of organic matter and nitrogen fertilizer would increase crop growth and grain yield. It is largely accepted that nitrogen fertilization affects protein content and composition and directly influences the technological quality of wheat 4–6. It is essential, therefore, to emphasize this concept of stability of quality in response to various levels of nitrogen fertilization in light‐textured sandy soils.…”