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Reading: ASSESSMENT OE THE EFFECTS OF ENVIRONMENTAL FACTORS ON YIELD OF COCONUT (Cocos nucifera, L.)

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ASSESSMENT OE THE EFFECTS OF ENVIRONMENTAL FACTORS ON YIELD OF COCONUT (Cocos nucifera, L.)

Authors:

T. S. G. PERIES ,

COCOS, LK
About T. S. G.
Coconut Research Institute, Lunuwila, Sri Lanka.
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R. O. THATTIL

LK
About R. O.
University of Peradeniya, Sri Lanka.
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Abstract

The long-term nut yield dataand climate data of eight variables (1976-
1992) were analyzed to understand the effects of climate and weather on the
yield variability between picks. The yield variation over the years had no
systematic pattern. The order of contribution of the picks to total yield is not
significantly consistent between years. Explanatory models were developed
at monthly lag periods prior to harvest of each pick. The most and least
influential picks in respect of climate variability are picks 5 and 2 respectively.
The critical period with respect to climate and weather variability of
picks 1 -6 are February, June, July, September, December and February respectively.
The climatic models fitted at these periods explain the yield variability
between picks. The influence of climatic variables during these periods
vary from pick to pick. Maximum air temperature and relative humidity
in the afternoon are the two most significant environmental variables influencing
yield irrespective of picks.
How to Cite: PERIES, T.S.G. & THATTIL, R.O., (2010). ASSESSMENT OE THE EFFECTS OF ENVIRONMENTAL FACTORS ON YIELD OF COCONUT (Cocos nucifera, L.). COCOS. 12, pp.1–17. DOI: http://doi.org/10.4038/cocos.v12i0.2161
Published on 10 Aug 2010.
Peer Reviewed

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