Ammonium and nitrate in soil and ratoon sugarcane grown in function of nitrogen on oxisol

• Published in: Journal of plant nutrition Vol. 36; no. 2; pp. 201 - 213
• Main Authors: do Vale, Diego Wyllyam, Prado, Renato de Mello, Cantarella, Heitor, Fonseca, Ivana Machado, Avalhães, Cintia Carla, Correia, Marcus André Ribeiro, Barbosa, e Mateus Palazzo
• Format: Journal Article
• Language: English
• Published: Philadelphia, NJ Taylor & Francis Group 28.01.2013; Taylor & Francis; Taylor & Francis Ltd
• Subjects: Agronomy. Soil science and plant productions; ammonium compounds; Biological and medical sciences; Economic plant physiology; Fertilizers; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; growth; Leaves; Metabolism; Metabolism. Physicochemical requirements; mineral nutrition; nitrates; Nitrogen; nitrogen content; Nitrogen fertilization; nitrogen fertilizer; nitrogen fertilizers; Nitrogen, phosphorus, potassium fertilizations; Nutrition. Photosynthesis. Respiration. Metabolism; nutritional status; Oxisols; plant growth; Plant physiology and development; production; Saccharum ssp; Soil science; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Soils; stems; sugarcane; Monocotyledones; Ammonium; Nitrogen compounds; C4-Type; Inorganic element; mineral nutrition; Tropical soil; Gramineae; Plant nutrition; Angiospermae; Production; Nitrogen fertilizer; Macronutrient(mineral); Monovalent cation; Vegetals; Tropical crop; Inorganic ion; Mineral soils; Oxisols; Saccharum ssp; Sugar plant; Inorganic cation; Inorganic nitrogen; Saccharum officinarum; Spermatophyta; Sugar cane; growth
• ISSN: 1532-4087; 0190-4167; 1532-4087
• DOI: 10.1080/01904167.2012.739241

After harvest, sugarcane residues left on the soil surface can alter nitrogen (N) dynamics in the plant-soil system. In Oxisols, the nitrogen fertilizer applied had its effects on the levels of ammonium and nitrate in the soil, N concentration in the plant leaves, and on the growth and productivity of second ratoon plants. The N rates tested were of 0, 60, 120, 180, and 240 kg ha⁻¹. Each treatment was replicated four times. Four months after the experiment was started, ammonium and nitrate concentration in the soil, N levels in plant leaves, and plant growth were evaluated. Productivity was evaluated 11 months after the experiment was set. By increasing the content of mineral N in soil, plant growth variables reflected differences in the production of stems; however, it did not affect foliar N. The use of leaf analysis was not important to assess the nutritional status of nitrogen in the ratoon sugarcane. Nitrogen concentration in soil was affected by nitrogen fertilization, but not the N content in leaves. The rate of 138 kg N ha⁻¹enabled greater production of sugarcane stalks (140 t ha⁻¹).