6th Floor, New Market Complex 15N
, Nellie Sengupta Sarani,
This study was conducted to determine whether increasing urea fertilization ratios at the initial flowering stage or fertilization once at the budding or the initial flowering stage could improve seed cotton yield, plant 15N
recovery, and decrease fertilizerN loss (FNL).
seedlings with 15N
-labeled ammonium sulfate supplied at rates of 0 (control) 30 (F30) 105 (F105) and 315 (F315) mg 15N
seedling-1 to simulate N-deposition at the accumulatively future amounts driven by urbanization.
Thesynthesized compounds were characterized by FT-IR, 1H, 13C, 31P, 15N
NMR specroscopic techniques.
Working in Sigman's lab, the investigators measured the amount of two types of nitrogen known as 14N and 15N
contained in the shells of tiny marine animal plankton called foraminifera.
Kaman offers the KD-5100 system with a choice of two sensors: the 15N
and the 20N.
Planta 2 (P2): uma aplicacao de 120 g de N, sem marcacao isotopica, em setembro de 2002; e duas aplicacoes de 90 g de N, enriquecido em 15N
, em novembro de 2002 e abril de 2003 [180 g de N-([sup.
The contract provides for a customised RB 14K reach truck, six FG 15N
counterbalanced models, and a used truck, the 'half', which will be kept on site but paid for on a 'pay-as-you-go' basis.
This is because biological processes, such as human digestion, tend to utilise the lighter 14N isotope, leaving more 15N
in the solid waste (faecal matter) processed by sewage treatment plants.
For more information, contact the company at 908 Highway 15N
, New Albany, Michigan 38652, USA, telephone 1-662534-9081; fax 1-662-534-6040.
In addition, plant-microbe partitioning of 15N
added to the soil was measured.
Ranells and Wagger (1997) reported that a rye-crimson clover biculture was capable of recovering greater residual 15N
than a crimson clover monoculture, but less than a rye monoculture.