Interaction between cultivar and soil fertility on grain yield, yield components and grain nitrogen content of wheat

Nitrogen fertilization effects on grain quality of durum wheat (<i>Triticum turgidum</i> L. var. durum) varieties in central Ethiopia

“…This could be attributed to the higher nitrogen in the soil left over from the previous season (Table 4) and the warmer weather condition at Debre Zeit. In contrast to the findings of Ames et al (2003) and Metho et al (1997) additional nitrogen fertilization did not significantly increase grain protein content of the varieties at both locations (Table 3) [31,32].…”

Improvement of Root Characteristics Due to Nitrogen, Phosphorus, and Potassium Interactions Increases Rice (Oryza sativa L.) Yield and Nitrogen Use Efficiency

“…The significant decrease in SRL upon adding N, with further decrease upon co-application of N, P, and K demonstrates that root growth was regulated by not only N supply level, but also the interactions between N and other nutrients, such as P or K or a combination of P and K. The interaction of N, P, and K can improve the growth and grain yield of cereal crops such as wheat and rice [4,14,15], and the interactive effects are influenced by soil fertility level. Metho et al reported that the wheat yield upon co-application of N, P, and K was higher than the sum of the yields from individually adding N, P, and K [17]. However, in other studies, the grain yield did not clearly increase after the application of P or K [18,19,39].…”

“…The effects of co-applying N, P, and K fertilizers on crop performance have been reported, and it is assumed that N, P, and K interactions could improve yield and fertilizer utilization efficiency. Metho et al [17] reported that the yield and NUE of wheat upon co-application of N, P, and K fertilizer exceeded the sum of that obtained from adding each nutrient individually. A study on rice-wheat rotation showed that integrating N, P, and K increased the yield and N uptake and decreased N loss in both rice and wheat compared with that obtained upon N or NP application; however, post-application NUE was not significantly different between NPK or NP [18].…”

Grain quality and nitrogen use efficiency of bread wheat (Triticum aestivum L.) varieties in response to nitrogen fertilizer in Arsi highlands, southeastern Ethiopia

“…NHI is an important index to measure re-translocation efficiency of absorbed N from vegetative plant parts to grain (Fageria, 2014).This index is very useful in measuring N partitioning in crop plants, which provides an indication of how efficiently the plants utilized N for grain production (Fageria and Baligar, 2003).The NHI values varied from crop species to crop species and among genotypes of the same species. Similarly, significant varietal differences on NHI in bread wheat varieties were reported (Jemalet al, 2015;Metho et al, 1997). The increasing trend of NHI was observed with increasing N rates from 0 to 92 kg N ha -1 and then decreased from 138 to 184 kg N ha -1 at OnS.…”