Vinod, K K and Suryakumar, M and Nazeer, M A and Sulochanamma, S and Thomas, K U and Vijayakumar, K R and Saraswathyamma, C K (2003) Growth analysis of Hevea clones in coastal Karnataka region. Indian Journal of Natural Rubber Research, 16 ( 1 & 2). pp. 35-40.
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Two clone evaluation trials with five clones each were planted during 1987 and 1988 to study the adaptability of H. brasiliensis clones in the Coastal Karnataka region. Growth of the clones was monitored by measuring girth initially at annual intervals and later at quarterly intervals. The growth was compared by means of absolute girth and girth increment values. Clones PB 235 and RRII 118 were found to be the more vigorous. A quadratic trend was fitted for annual average girth as a function of age. Clones showed non-significant variation for girth increment. The growth in terms of girth increment (GI) was fitted as a power function of age (X). Since all the clones irrespective of the trials showed similar growth trend, a general equation, GI=616.012 X-1.8982 was fitted. Comparison of quarterly and half-yearly girth increment has shown that, growth was maximum during the rainy season (April-October). There was no definite pattern of contribution so far as individual quarters were concerned.
|Uncontrolled Keywords:||Coastal Karnataka, Growth analysis, Hevea brasiliensis clones|
|Subjects:||Agricultural Sciences and Technology > Horticulture|
|Divisions:||Fruits and Horticulture|
|Deposited By:||Dr Vinod K K|
|Deposited On:||29 Jun 2010 12:45|
|Last Modified:||29 Jun 2010 12:45|
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