Correlation studies between different microclimate parameters with growth attributes in potato as influenced by different treatmentse

Abstract

The field trial was conducted during both the seasons (2009-10 and 2010-11) on PGI Farm without changing randomization. The experiment was laid out in rabi season. The various components of microclimatic parameters viz. In correlation studies it was observed that the main microclimatic parameters viz., photosynthetic rate was positively correlated with number of functional leaves, leaf area, plant spread. Similarly stomatal conductance also positively correlated with functional leaves, leaf area, plant spread, dry matter, number and fresh weight of tubers. PAR has positive correlation with number of functional leaves, leaf area, plant spread, dry matter, number and fresh weight of tubers. Stomatal resistance, air and leaf temperature were negatively correlated with number of functional leaves, leaf area, plant spread, dry matter, number and fresh weight of tubers, photosynthetic rate, CO2 concentration, stomatal conductance, PAR, GDD and LUE.