Record Details

Trends in climate and productivity and relationship between climatic variables and productivity in black pepper (Piper nigrum)

DSpice at Indian Institute of Spices Research

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Field Value
 
Creator KRISHNAMURTHY, K S
KANDIANNAN, K
SIBIN, C
CHEMPAKAM, B
ANKEGOWDA, S J
 
Date 2011-12-05T22:07:22Z
2011-12-05T22:07:22Z
2011-08
 
Identifier Indian Journal of Agricultural Sciences 81 (8): 729–33 ( 2011)
http://hdl.handle.net/123456789/756
 
Description Trend analysis of the climatic parameters (past two decades) in major black pepper growing areas of the country showed in general that rainfall is decreasing while temperature is increasing. Black pepper productivity also showed a decreasing trend. Studies on the relationship between climatic parameters and productivity in black pepper showed that December and January rainfall had negative correlation while April and May rainfall had positive correlation. Minimum
temperature had positive correlation in higher elevations while both Tmax and Tmin had negative correlation with productivity in plains. Results on the extent of relationship between climatic parameters and productivity revealed that Tmax and Tmin influenced yield more than rainfall or rainy days. Normalized yield deviations (NYD) were worked out (deviations from the mean for two decades) for different stations based on the climatic data for the past two decades.
This was regressed with rainfall, Tmax and Tmin to get regression line which can predict the yield deviations if values
for rainfall, Tmax and Tmin are substituted in the equation. However, apart from the weather parameters used for the 0study, other weather variables such as light and humidity and other factors such as cost of cultivation and price for the produce, diseases and management practices definitely have a role in production and productivity of black pepper.
 
Format 35229 bytes
application/pdf
 
Language en
 
Publisher ICAR
 
Subject Black pepper
Climatic parameters
Rainfall
T max
T min
NYD
Yield
 
Title Trends in climate and productivity and relationship between climatic variables and productivity in black pepper (Piper nigrum)
 
Type Article