Rice: Nutrient Disorders & Nutrient Management

A. Dobermann and T. Fairhurst. 2001. PPI/PPIC, Singapore and IRRI, Philippines. 191p. ISBN 981-04-2742-5. 190 mm x 250 mm. Includes CD-ROM.

The book provides guidelines for detecting nutrient deficiency and toxicity symptoms and managing nutrients in rice grown in tropical and subtropical regions. To enhance the readers’ understanding of the subject, the book also discusses the function of nutrients in the rice plant.

• possible causes of nutrient deficiencies.
• description of nutrient deficiency symptoms.
• the effect of nutrient deficiency on plant growth.
• the effect of flooding on nutrient availability.

Estimates of nutrient removal in grain and straw have been included to help researchers and extension workers calculate the amount of nutrients removed from the field under different management systems. Site-specific nutrient management recommendations for N, P, and K in lowland rice.

The handbook also describes a new approach to site-specific nutrient management, based on on-going on-farm research in the Mega Project on Reversing Trends in Declining Productivity in Intensive, Irrigated Rice Systems (a collaborative project between IRRI and researchers in China, India, Indonesia, the Philippines, Thailand, and Vietnam). As this work progresses, a more complete approach for site-specific nutrient management will evolve. Where appropriate, additional information has been included for upland rice or rice grown in flood-prone conditions. This publication and the accompanying CD will help increase the impact of new approaches to nutrient management at the farm level.

This handbook is also available in Spanish. For orders or further information, please check out IPNI's Northern Latin America website or send an email to its Director Dr Jose Espinosa.

Contents at a glance Rice Ecosystems– Irrigated rice; Rainfed lowland and upland rice; Flood-prone rice. Nutrient Management– Yield gaps and crop management; Nutrient input-output budget in an irrigated rice field; Site-specific nutrient management strategy; Estimating indigenous N, P, and K supplies; Crop nutrient requirements - the nutritional balance concept; Recovery efficiencies of applied nutrients; Managing organic manures, straw, and green manure; Economics of fertilizer use. Mineral Deficiencies– Nitrogen, Phosphorus, Potassium, Zinc, Sulfur, Silicon, Magnesium, Calcium, Iron, Manganese, Copper, Boron. Mineral Toxicities– Iron, Sulfide, Boron, Manganese, Aluminum, Salinity Tools and Information– Soil zones, the fate of fertilizer nitrogen, and the rhizosphere in lowland paddy soils; Diagnostic key for identifying nutrient deficiencies in rice; Nutrient concentrations in plant tissues of rice; Grain yield and yield components; Assessing nitrogen efficiency; Tools for optimizing topdressed N applications; Soil- and season- specific blanket fertilizer recommendations; Converting fertilizer recommendations into fertilizer material; Soil and plant sampling.

Sample pages from the book:

Note: This book is no longer available in hardcopy. The full-text PDF file of the book can be downloaded from Google Books http://books.google.com/books?id=V-kJxfFhkaUC&printsec=frontcover&dq=Rice:+Nutrient+Disorders+and+Nutrient+Management&cd=1#v=onepage&q=&f=false