Mohlo by sa vám tiež páčiť

Viac informácií o knihe Nitrogen Enigma in Tropical Soils

• Parametre knihy
• Anotácia kniha
• Obľúbené z iného súdka

Nákupom získate 198 bodov

Anotácia knihy

Fixed NH4+ has been shown to occupy a significant portion of the total N of some tropical soils, which may alter and influence the N availability and dynamics in these soils. A series of laboratory investigations and a green house study were conducted to determine the extent and dynamics of fixation of fertiliser N in a range of agricultural soils using 15N techniques. Existing micro-diffusion procedures as a necessary step in the pre-concentration of exchangeable NH4+ and NO3--15N were validated, and new procedures for measuring fixed NH4+-15N fractions (total, strongly and weakly fixed) were developed. Laboratory incubations showed fixation to increase linearly with increasing N application rate. In green house studies cropping resulted in a slow release of a small portion (13.3 %) of the "recently" fixed NH4+ at 42 days after cropping. Potassium (K+) added after N fertilization resulted in the release of "recently" fixed NH4+ being blocked. These findings should provide agronomist and soil fertility researchers with pertinent information regarding alterations to N management tools and systems.

Parametre knihy

• Celý názov: Nitrogen Enigma in Tropical Soils
• Podnázov: Unravelling the Phenomenon of NH4+ Fixation
• Autor: Gaius Eudoxie
• Jazyk: Angličtina
• Väzba: Brožovaná
• Počet strán: 256
• EAN: 9783639244991
• ID: 06832097
• Nakladateľ: VDM Verlag Dr. Müller
• Hmotnosť: 398 g
• Rozmery: 220 × 150 × 15 mm
• Rok vydania: 2010

Obľúbené z iného súdka

---

---

---