Nitrogen and Phosphorus fertilizers for the productivity of Wheat

ISBN-13: 9783659411335 / Angielski / Miękka / 2013 / 68 str.

Harfe Melesse;Belete Ketema

Opis

The book explains result of a research conducted in 2006 cropping season in Ofla district in southern Tigray (Ethiopia) in research station supported by laboratory. The aim of the research was to see the effect of nitrogen and phosphorus fertilizer rates on the yield and yield components of bread wheat (Triticum aestivum L.). Application of N and P fertilizers significantly (P<0.01) influenced plant height, shoot dry weight at physiological maturity, and tiller number per plant. The variety-P-N interactions were highly significant for grain yield, biomass yield, harvest index, and straw yield. Non-significance difference due to the interaction of P and N with respect to plant height, number of tillers per plant, initial plant stand, 1000 kernels weight ,days to 50% flowering and total soil nitrogen at harvest was observed. The grain and straw N and P contents and uptakes, increased with N and P levels but the apparent recovery and agronomic efficiency of N and P fertilizers decreased with increasing N and P rates in both varieties. In addition grain and biomass yields were significantly and positively correlated with most of the agronomic parameters.

O autorze

Harfe, MelesseThe author was graduated with his BSC. Degree in Dry land Crop Science from Mekelle University in July 2002. He studied his MSc degree in Agronomy from Haramaya University in July 2007. Currently he is working in Ethiopian Agricultural Research Institute at Mehoni Research Center