Timing of nitrogen (N) fertilizer application can influence grass regrowth, so it is important to identify how tropical grasses respond delays in applying after defoliation. Our objective was the effects timing N harvest on productive, morphogenic and structural characteristics 3 grasses: ‘Xaraés’ (Urochloa brizantha [Hochst. ex A. Rich.] Stapf cv. Xaraés), ‘Marandu’ Marandu) ‘Tanzânia’ (Megath...

Abstract In California's water‐seeded rice systems, both high yields and nitrogen (N) use efficiency are achieved when the pre‐plant N fertilizer (usually aqueous‐ammonia [aqua‐N]) is injected into a dry seedbed before flooding planting. However, there situations where applying in this manner not possible. The objective of study was to evaluate alternative management practices by testing differ...

While previous research has been contradictory, potential grain yield responses and seed protein increases have led to con­ tinuing interest in N fertilizer application to soybean (Glycine max (L.) Merr.]. Field experiments were conducted at seven lo­ cations from 1990 to 1991 in Alabama to determine soybean response to N fertilization at various growth stages. Treatments included a factorial a...

Optimizing the timing of nitrogen (N) enhanced efficiency fertilizers (EEFs) may maximize winter wheat ( Triticum aestivum L.) grain yield, protein content, and N-use (NUE). From 2013 to 2018, experiments were conducted at two irrigated six rain-fed sites across Canadian Prairies (24 site-years) evaluate responses N source timing/placement effects EEFs. Nitrogen sources included untreated urea,...

A changing precipitation regime and increasing nitrogen deposition are likely to have profound impacts on arid and semiarid ecosystem C cycling, which is often constrained by the timing and availability of water and nitrogen. However, little is known about the effects of altered precipitation and nitrogen addition on grassland ecosystem C exchange. We conducted a 3-year field experiment to asse...