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Bibliographic Data
Control Number57252
Date and Time of Latest Transaction20060619142448.2
General Information060619s |||||||||b ||00|||
Cataloging SourcePCARRD-DOST
Main Entry - Personal NameValmayor, Ramon V.
Main Entry - Uniform TitleENGLISH
Title StatementThe natural distribution of the root systems of citrus, lanzones and cacao
General Note58(5&6):244-262, Oct-Nov 1974
Summary, Etc.Mature lanzones, citrus and cacao trees were dug gradually to determine the natural root distribution of their root systems. Lanzones roots extended to a distance of 8 ft from the trunk, those of citrus reached 12 ft away from the base while roots of cacao did not grow more than 7 ft. The maximum depth of penetration was 4 ft in lanzones and only 3 ft in citrus. The greatest density of feeder roots was in the uppermost 1-ft layer of soil in all three crops studied. The feeder roots were nearly uniformly distributed within areas ranging from 1 to 4 ft away from the trunk of cacao and citrus. In lanzones, the greatest density of absorbing roots occured in the uppermost 1-ft layer and within 2 to 4 ft from the trunk. Based on these findings, fertilizer should be spread evenly within the area under the tree canopy rather than applied in a narrow band around the tree and directly under the branch spread where feeder roots are not concentrated. The observed depth of rooting also suggests that under similar soil and cultural conditions (sod culture system on Lipa silty clay, Lipa-Calumpang Intergrade and Lipa-Magallanes Complex for lanzones, citrus and cacao, respectively) depth of irrigation need not extend more than 2 ft
Subject Added Entry - Topical TermCITRUS
 LANSIUM DOMESTICUM
 THEOBROMA CACAO
 ROOTS
 DISTRIBUTION
Added Entry - Personal NameTabora, Panfilo C.
 Herrera, Wilhelmino A.
 Asension, A.
LocationDOST PCARRD
  
     
 
Physical Location
Department of Science and Technology
Philippine Council for Agriculture, Forestry and Natural Resources Research and Development
  
     
 
Digital Copy
Not Available
  
     
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