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Journal of Biological Sciences

Year: 2007 | Volume: 7 | Issue: 6 | Page No.: 833-840
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Authors

George Ouma

Keywords

Research Article

Morphological and Physiological Parameters of Avocado (Persea americana) Rootstock Seedlings as Affected by Different Container Sizes and Different Levels of Irrigation Frequency

George Ouma
Studies were conducted at Maseno University, Kenya from July 2003 to March 2005 to investigate the effect of four container sizes; V1 (1.7 L), V2 (2.7 L), V3 (3.9 L), V4 (4.7 L) and three irrigation frequency levels namely W1 (irrigating every day), W2 (irrigation every 2 days, W3 (irrigation every 3 days in a polythene- covered greenhouse on the morphological and physiological parameters of Avocado (P. americana) rootstock seedlings. The experimental design was completely randomized replicated four times. Morphological and physiological parameters were determined using starndard methods and they were number of leaves, plant height, stem diameter, shoot and root dry and fresh weights, whole plant dry and fresh weight, CO2 assimilation rate substomatal CO2 concentration, soil respiration, transpiration rate and stomatal conductance Both irrigation frequency and container size significantly increased these parameters and the interaction between them was either significant or not depending on the parameter.
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