Estimacion del requerimiento de fertilizante potasico por la yuca con base en el analisis de suelo (Record no. 77719)

MARC details
000 -LEADER
fixed length control field 03643nab a22004817a 4500
001 - CONTROL NUMBER
control field 39649
003 - CONTROL NUMBER IDENTIFIER
control field CO-PlCIA
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20130510181310.0
040 ## - CATALOGING SOURCE
Original cataloging agency CO-PlCIA
Transcribing agency CO-PlCIA
041 ## - LANGUAGE CODE
Language code of text/sound track or separate title spa
050 ## - LIBRARY OF CONGRESS CALL NUMBER
Classification number 37273
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 120504t1989 000 0sspa d
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name RAMIREZ, R.
245 ## - TITLE STATEMENT
Title Estimacion del requerimiento de fertilizante potasico por la yuca con base en el analisis de suelo
300 ## - PHYSICAL DESCRIPTION
Extent 39(1-3):163-177
520 ## - SUMMARY, ETC.
Summary, etc Para evaluar la eficiencia de cuatro metodos de extraccion del K del suelo, Morgan, Bray 1, Mehlich 1 y Olsen, se utilizaron los datos de doce experimentos donde se busco la respuesta de la yuca a la fertilizacion potasica, en suelos de reaccion acida. Utilizando el modelo lineal discontinuo se calcularon los rendimientos relativos (RR) para relacionarlos, mediante la regresion, con el K disponible del suelo. Los coeficientes de correlacion mas altos fueron de 0,73 y 0,72 para los metodos de Morgan y Bray 1, respectivamente, mientras que para Mehlich 1 y Olsen fueron de 0,36 y 0,68, respectivamente. La curva de regresion correspondiente al metodo Bray 1 se dividio, tomando en cuenta los indices de fertilidad, en cinco categorias de disponibilidad de K: muy baja, entre 0 y 40 ppm; baja, entre 40 y 70 ppm; media, entre 70 y 100 ppm; alta, entre 100 y 130 ppm y muy alta, mas de 130 ppm. El requerimiento de K2O en kg/ha, calculado para satisfacer las necesidades de la yuca, basado en el K disponible, fue 150 o mas para suelos muy bajos; entre 110 y 150 para suelos bajos; entre 80 y 110 para suelos medios; entre 60 y 80 para suelos altos y menos de 60 para suelos muy altos. (RA)
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520 ## - SUMMARY, ETC.
Summary, etc Soil K uptake, using the Morgan, Bray 1, Mehlich 1 and Olsen methods, was calibrated by the response data of cassava to NPK fertilization in twelve field trials, in acid soils of Cojedes state, Venezuela. The relative yields were calculated by the lineal discontinuous model and were related to the available K by regression analysis. The higher correlation coefficients corresponded to Morgan and Bray 1 methods, 0.73 and 0.78, respectively, while for Mehlich 1 and Olsen these were, respectively, 0.36 and 0.68. Five soil categories of available K were established, using the Bray 1 regression curve: very low, with less than 40 ppm of K; low, from 40 to 70 ppm; medium, from 70 to 100 ppm; high, from 100 to 130 ppm; and very high, with more than 130 ppm of K. The K2O fertilization needs for each category of available soil K resulted to be 150 kg/ha or more for very low soil, 110 to 150 kg/ha for low soils, 80 to 110 kg/ha for medium soils, 60 to 80 kg/ha for high soils, and less than 60 kg/ha for very high soils. (AS)
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650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Manihot esculenta
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Fertilizers
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element K
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Soil analysis
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Soil fertility
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element ROOT PRODUCTIVITY
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Venezuela
9 (RLIN) eng
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Manihot esculenta
9 (RLIN) spa
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Fertilizantes
9 (RLIN) spa
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element K
9 (RLIN) spa
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element ANALISIS DEL SUELO
9 (RLIN) spa
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Fertilidad del suelo
9 (RLIN) spa
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element PRODUCTIVIDAD DE RAICES
9 (RLIN) spa
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Venezuela
9 (RLIN) spa
653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Yuca
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653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Cassava
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653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Journal articles
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653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Artículos en revistas
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653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Electronic documents
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653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Documentos electrónicos
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653 ## - INDEX TERM--UNCONTROLLED
Uncontrolled term Journal article
-- eng
773 ## - HOST ITEM ENTRY
Title Agronomia Tropical
Place, publisher, and date of publication 1989
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="http://www.ceniap.gov.ve/pbd/RevistasCientificas/Agronomia%20Tropical/at3913/Arti/ramirez_r5.htm">http://www.ceniap.gov.ve/pbd/RevistasCientificas/Agronomia%20Tropical/at3913/Arti/ramirez_r5.htm</a>
998 ## - Data Base
DataBase YUCA
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Library of Congress Classification
Koha item type Journal Article
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Use restrictions Not for loan Collection code Home library Current library Shelving location Date acquired Total Checkouts Full call number Barcode Date last seen Copy number Price effective from Koha item type
    Library of Congress Classification     Short Loan Document Collection CINFOS CIAT Library CIAT Library Document collection CINFOS 05/04/2012   37273 100056657 05/04/2012 c.1 05/04/2012 Journal Article
    Library of Congress Classification   Restricted Access Not For Loan Electronic Document CIAT Library CIAT Library Web 05/04/2012   37273   05/04/2012   05/04/2012 Online Document

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