Nitrification inhibitor 3,4-Dimethylpyrazole phosphate improves nitrogen recovery and accumulation in cotton plants by reducing NO3? leaching under 15N-urea fertilization

The use of nitrification inhibitors could be an interesting alternative when applied to enhance nitrogen (N) fertilizer efficiency in annual crops such as cotton under tropical soil conditions. Thus, our aim was evaluate the inhibitor 3,4-Dimethylpyrazole phosphate (DMPP) a typical by evaluating fate (N-NO3?, N-NH4+ and total N leached water), accumulation recovery plants soil. Leaching columns with were used assess N-NO3? losses drainage water. treatments consisted three levels side-dressing (corresponding 50, 100 150 kg ha?1) 15N-urea without DMPP application. An additional treatment (absence application side-dressing) control. efficiently improved after urea reducing NO3? leaching, leading enhanced acquisition from augmenting plants, mainly high above ha?1 applied. We found that increased 31% + source compared conventional urea. In addition, reduced leaching (by approximately 11 20%), although it had no significant effect on shoot or root dry matter yields. reduction obtained herein highlights potential mitigate impact inputs losses, thereby improving uptake crops.