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Abstract

Modern Concepts & Developments in Agronomy

Significance of Moisture in Poplar Production and Wood Handling

  • Open or CloseRC Dhiman*

    Greenlam Industries Ltd., India

    *Corresponding author:RC Dhiman, Greenlam Industries Ltd., New Delhi, India

Submission: September 13, 2024;Published: November 18, 2024

DOI: 10.31031/MCDA.2024.14.000846

ISSN: 2637-7659
Volume14 Issue 5

Abstract

Paper presents data on Moisture Content (MC) in poplar (Populus deltoides) leaf samples collected from emerging bud sprouts, fully grown and those undergoing senescence. The available published and unpublished data sets on MC have been reviewed in reference to water management to maintain adequate moisture levels in poplar production and its wood during trade and peeling. Moisture content was studied in bud sprouts from three poplar species viz., P. deltoides, P. cilata and P. alba; bud sprouts from saplings soaked in water pit, field planted saplings, and polythene bag planted saplings; leaves from 4 different aged trees; green leaves from the top position of nursery saplings, yellow leaves from the middle position of nursery saplings, and overnight dropped yellow leaves from nursery saplings. P. deltoides recorded a significantly higher MC of 327.44% on a dry weight basis (MCDW) compared to that of P. alba (286.46%) and statistically at par with that of P. ciliata (317.90%). Bud sprouts from water-soaked saplings recorded significantly higher MCDW (363.41%) compared to 315.03% in field planted and 304.01% in polythene bags planted saplings. MC decreased in leaves with increase in age of trees from 7 months to 31 months. Green leaf samples from top position of saplings collected during senescence had significantly higher 159.54% MCDW compared to overnight shed yellow leaves (69.34%). The study also included some wood samples of different aged poplars which along with other data sets were used to develop regression equations to predict MCDW from MC on a fresh weight basis (MCFW) in composite samples that include leaves, bud sprouts, and wood samples together. Separate regression equations were also developed to predict MCDW in each of leaves, bud sprouts, and wood samples separately. MCDW varied widely from over 350% in fresh bud sprouts to less than 70% in overnight dropped leaves. Conversion factor between MCDW and MCFW for samples >300% MCDW was >4, for 250-300% as 3-4, for 150-200% as 2-2.5, for 100- 150% as 1-2, and for <100% as <1. The review on water management and standard operating practices on irrigation in-vogue suggests providing balanced supplies to avoid moisture deficit and excess for producing good quality poplar whereas wood needs to be maintained in saturated conditions just before peeling for good quality veneer production.

Keywords:

Moisture content; Leaves; Bud sprouts; Wood trade and peeling; Water management

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