Capacidade produtiva e diagnose nutricional do milho em um latossolo amarelo em dois sistemas de uso, no Pará

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ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Capacidade produtiva e diagnose nutricional do milho em um latossolo amarelo em dois sistemas de uso, no Pará by : J. R. Galvão

Download or read book Capacidade produtiva e diagnose nutricional do milho em um latossolo amarelo em dois sistemas de uso, no Pará written by J. R. Galvão and published by . This book was released on 2005 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: O crescente aumento da substituição da floresta natural por formas alternativas de uso do solo na Amazônia tem gerado implicações ecológicas relacionadas à utilização dos recursos naturais, onde a agricultura e o setor florestal tem feito parte de todo esse processo resultando no declínio da produtividade. O objetivo deste trabalho foi avaliar as modificações nas propriedades químicas de um Latossolo Amarelo textura média, e diagnosticar as deficiências de nutrientes do milho (Zea mays L.), em uma seqüência de vegetação de floresta secundária e área cultivada com o consórcio cacau, gliricidia, pupunha" localizada no município de Marituba-Pa. O experimento foi conduzido em casa de vegetação da Universidade Federal Rural da Amazônia, usando um delineamento experimental inteiramente casualizado com arranjo de tratamentos em esquema fatorial 2x10 (dois sistemas de uso do solo - Floresta secundária e Área cultivada com o consórcio cacau x pupunha e gliricidia) e 10 tratamentos fertilizantes (Testemunha; Completo com N, P, K, Ca, Mg, S e micronutrientes; Completo + calagem; omissão de N, P, K, 'Ca, Mg, S e micronutrientes da mistura completa), em 4 repetições. Os resultados demonstraram que houve aumento da produção de massa seca do milho devido à adubação e calagem. Em geral, a produção de massa seca do milho foi maior no solo da área cultivada, quando comparada com solo de floresta secundária. O fósforo, potássio, cálcio e magnésio foram os nutrientes que mais limitaram o crescimento do milho na floresta secundária e P, K, Ca, Mg e S na área cultivada com o consórcio cacau X gliricidia x pu punha. Entretanto, não houve diferenças significativas no crescimento do milho entre os tratamentos com as testemunhas dos dois sistemas de uso do solo, sugerindo que a substituição da capoeira natural pela agricultura não diminuiu a já exaurida capacidade produtiva do solo.

Fertilizing for High Yield and Quality

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ISBN 13 :
Total Pages : 240 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Fertilizing for High Yield and Quality by : Lindbergue Araújo Crisóstomo

Download or read book Fertilizing for High Yield and Quality written by Lindbergue Araújo Crisóstomo and published by . This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acerola; Banana; Cashew: dwarf variety; Citrus; Coconut: green dwarf variety; Guava; Mango; Papaya; Passion-fruit; Pineapple; Soursop.

Proximal Soil Sensing

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Publisher : Springer Science & Business Media
ISBN 13 : 9048188598
Total Pages : 440 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Proximal Soil Sensing by : Raphael A. Viscarra Rossel

Download or read book Proximal Soil Sensing written by Raphael A. Viscarra Rossel and published by Springer Science & Business Media. This book was released on 2010-07-25 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on developments in Proximal Soil Sensing (PSS) and high resolution digital soil mapping. PSS has become a multidisciplinary area of study that aims to develop field-based techniques for collecting information on the soil from close by, or within, the soil. Amongst others, PSS involves the use of optical, geophysical, electrochemical, mathematical and statistical methods. This volume, suitable for undergraduate course material and postgraduate research, brings together ideas and examples from those developing and using proximal sensors and high resolution digital soil maps for applications such as precision agriculture, soil contamination, archaeology, peri-urban design and high land-value applications, where there is a particular need for high spatial resolution information. The book in particular covers soil sensor sampling, proximal soil sensor development and use, sensor calibrations, prediction methods for large data sets, applications of proximal soil sensing, and high-resolution digital soil mapping. Key themes: soil sensor sampling – soil sensor calibrations – spatial prediction methods – reflectance spectroscopy – electromagnetic induction and electrical resistivity – radar and gamma radiometrics – multi-sensor platforms – high resolution digital soil mapping - applications Raphael A. Viscarra Rossel is a scientist at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) of Australia. Alex McBratney is Pro-Dean and Professor of Soil Science in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia. Budiman Minasny is a Senior Research Fellow in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia.

The Theory of the Design of Experiments

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Publisher : CRC Press
ISBN 13 : 1420035835
Total Pages : 337 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis The Theory of the Design of Experiments by : D.R. Cox

Download or read book The Theory of the Design of Experiments written by D.R. Cox and published by CRC Press. This book was released on 2000-06-06 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why study the theory of experiment design? Although it can be useful to know about special designs for specific purposes, experience suggests that a particular design can rarely be used directly. It needs adaptation to accommodate the circumstances of the experiment. Successful designs depend upon adapting general theoretical principles to the spec

Soil Management for Sustainability

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ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Soil Management for Sustainability by : R. Lal

Download or read book Soil Management for Sustainability written by R. Lal and published by . This book was released on 1991 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book manuscripts presented originally at a World Association of Soil and Water Conservation conference held in 1989 are collected. Topics include basic processes (e.g. soil structure, soil erosion, soil compaction); management options (e.g. conservation tillage); policy issues and priorities

The Physiology of Vegetable Crops, 2nd Edition

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Publisher : CABI
ISBN 13 : 1786393778
Total Pages : 511 pages
Book Rating : 4.7/5 (863 download)

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Book Synopsis The Physiology of Vegetable Crops, 2nd Edition by : Hans Christian Wien

Download or read book The Physiology of Vegetable Crops, 2nd Edition written by Hans Christian Wien and published by CABI. This book was released on 2020-05-01 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completely updated and revised, this bestselling book continues to explain the growth and developmental processes involved in the formation of vegetables. Since the publication of the successful first edition significant discoveries, particularly in the area of molecular biology, have deepened and broadened our knowledge and understanding of these processes. This new edition brings the topic up-to-date and is presented over two sections: the first provides general knowledge on germination, transplanting, flowering, the effects of stress and modelling, whilst the second section details the physiology of specific crops or crop groups.

Soil Quality for Crop Production and Ecosystem Health

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Publisher : Elsevier
ISBN 13 : 0080541402
Total Pages : 465 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Soil Quality for Crop Production and Ecosystem Health by : E.G. Gregorich

Download or read book Soil Quality for Crop Production and Ecosystem Health written by E.G. Gregorich and published by Elsevier. This book was released on 1997-11-10 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is a complex body that exists as many types, each with diverse properties that may vary widely across time and space as a function of many factors. This complexity makes the evaluation of soil quality much more challenging than that of water or air quality. Evaluation of soil quality now considers environmental implications as well as economic productivity, seeking to be more holistic in its approach.Thus, soil quality research draws from a wide range of disciplines, blending the approaches of biologists, physicists, chemists, ecologists, economists and agronomists, among others.This book presents a broad perspective of soil quality that includes these various perspectives and gives a strong theoretical basis for the assessment of soil quality.A short glossary provides definitions for terms used throughout the book.

Soil Phosphorus

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Publisher : CRC Press
ISBN 13 : 1482257858
Total Pages : 351 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Soil Phosphorus by : Rattan Lal

Download or read book Soil Phosphorus written by Rattan Lal and published by CRC Press. This book was released on 2016-09-19 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus is an essential plant nutrient, but global population growth has dramatically reduced the availability of phosphorus fertilizer resources. Despite this scarcity, there remain numerous problems associated with the excessive and inappropriate use of phosphorus leading to non-point source pollution and eutrophication of natural waters. Identifying appropriate systems for managing soil phosphorus and reducing the risks of eutrophication are needed to minimize the environmental risks. This book focuses on the availability and recycling of phosphorus; regulatory and policy issues of sustainable phosphorus use; and water quality management in agroecosystems pertaining to phosphorus. Sections are dedicated to global phosphorus reserves; cycling and pathways of phosphorus; phosphorus in agriculture; human dimensions and policy intervention; and research and development priorities. Phosphorus is a finite but crucial resource and is an essential element to all life. Sub-optimal availability and nutrient imbalance in the root zone can adversely impact plant growth, and the quality of food and feed grown on these soils. However, the proven reserves of phosphorus can hardly be adequate for a few centuries only. Yet, its misuse and mismanagement has caused severe problems of eutrophication of water and pollution of the environment. Thus, judicious management of soil phosphorus is essential. This volume is specifically devoted to availability and recycling of phosphorus, regulatory/policy issues of sustainable use of phosphorus, and management in agroecosystems in the context of maximizing the use efficiency and minimizing the environmental risks of water quality.

Soils of Arid Regions

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ISBN 13 : 9780444408822
Total Pages : 0 pages
Book Rating : 4.4/5 (88 download)

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Book Synopsis Soils of Arid Regions by : Harold Ernest Dregne

Download or read book Soils of Arid Regions written by Harold Ernest Dregne and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Consumptive Use of Water and Irrigation Water Requirements

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ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Consumptive Use of Water and Irrigation Water Requirements by : American Society of Civil Engineers. Technical Committee on Irrigation Water Requirements

Download or read book Consumptive Use of Water and Irrigation Water Requirements written by American Society of Civil Engineers. Technical Committee on Irrigation Water Requirements and published by . This book was released on 1973 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Soil Fertility Improvement and Integrated Nutrient Management

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ISBN 13 : 9781681175836
Total Pages : 316 pages
Book Rating : 4.1/5 (758 download)

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Book Synopsis Soil Fertility Improvement and Integrated Nutrient Management by : Aleix Campo

Download or read book Soil Fertility Improvement and Integrated Nutrient Management written by Aleix Campo and published by . This book was released on 2016-09-01 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crops need air, sun, water, and soil to thrive. When it comes to soil, however, quality usually trumps quantity. Rich and fertile land boasts a healthy mixture of phosphorous, potassium, and nitrogen, along with water, air, and soil microorganisms that break down organic matter. Soil is an incredibly complex substance. It has physical and chemical properties that allow it to sustain living organisms -- not just plant roots and earthworms, but hundreds of thousands of different insects, wormlike creatures and micro-organisms. When these organisms are in balance, soil cycles nutrients efficiently, stores water and drains the excess, and maintains an environment in which plants can thrive. Plant nutrition is only one of more than fifty factors which directly affect both crop yield and quality. The availability of required nutrients, together with the degree of interaction between these nutrients and the soil, play a vital role in crop development. A deficiency in any one required nutrient or, a soil condition that limits or prevents a metabolic function from occurring can limit plant growth. A soil nutrient management plan should include analysing soil deficiencies to determine the type, application rate, application interval, and the placement of any nutrients required to optimise short and long term productivity. Soil nutrient management involves not only the physical properties and mineral structure of the soil, but also the balance between soil pathogens and beneficial microbes. Beneficial microbes increase nutrient availability, reduce disease, reduce nutrient losses, and help degrade toxic compounds. This book provides a basic introduction to the biological, chemical, and physical properties affecting soil fertility and plant nutrition. The advances in the field of soil fertility are described in this book along with information regarding nutrient management.

Erosion, Transport and Deposition Processes

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Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Erosion, Transport and Deposition Processes by : H.-R. Bork

Download or read book Erosion, Transport and Deposition Processes written by H.-R. Bork and published by . This book was released on 1991 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Symposium dedicated to Heinrich Rohdenburg was held in August and September 1989 at Königslutter, FRG. The papers contained in this volume are a selection of those presented at the symposium. Reflecting the wide range of geomorphological, hydrological, pedological, and geoecological research fields of Heiner Rohdenburg the papers of this Catena Supplement vary from general diagnoses and considerations concerning the evolution of landscapes, process studies in the laboratory and in the field to process-orientated models. Honouring the extraordinary, ecosystem-oriented work of Heiner Rohdenburg, the papers present the state of the art, indicating many directions for future research.

Pasture Production in Acid Soils of the Tropics

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Publisher : CIAT
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4./5 ( download)

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Book Synopsis Pasture Production in Acid Soils of the Tropics by : Pedro A. Sanchez

Download or read book Pasture Production in Acid Soils of the Tropics written by Pedro A. Sanchez and published by CIAT. This book was released on 1979 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Visual Soil Assessment

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Publisher :
ISBN 13 : 9781877468759
Total Pages : pages
Book Rating : 4.4/5 (687 download)

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Book Synopsis Visual Soil Assessment by : Trevor Graham Shepherd

Download or read book Visual Soil Assessment written by Trevor Graham Shepherd and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Base SAS 9.1.3 Procedures Guide

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Publisher : Sas Inst
ISBN 13 : 9781590477540
Total Pages : 1934 pages
Book Rating : 4.4/5 (775 download)

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Book Synopsis Base SAS 9.1.3 Procedures Guide by : SAS Institute

Download or read book Base SAS 9.1.3 Procedures Guide written by SAS Institute and published by Sas Inst. This book was released on 2006 with total page 1934 pages. Available in PDF, EPUB and Kindle. Book excerpt: