Biomass production and growth rates at different phenophases of garlic as influenced by natural and synthetic mulches
2003
Haque, M.S. | Islam, M.R. | Karim, M.A. | Khan, M.A.H. (Bangladesh Agricultural Univ., Mymensingh (Bangladesh). Dept. of Crop Botany)
A field experiment was conducted to study the effect of natural and synthetic mulches on biomass distribution in various parts and growth rates at different phenophases of local and exotic garlic (Allium sativum L.) cultivars. Significant variations exist among the different mulches in respect of dry matter partitioning and physiological characters of garlic. The results showed that Biomass production of leaf, root and pseudostem increased up to 105 days after planting (DAP) and thereafter decreased gradually at the approach of maturity. Total dry matter (TDM) also had a similar trend. Leaf area index (LAI) increased up to 90 DAP and then decreased gradually. CGR increased gradually with the advancement of crop growth. However, RGR from its highest value at early growth stage continued to decrease with crop age. The results indicated that among the natural mulches, water hyacinth mulch produced the plants with higher LAI, TDM and CGR but lower RGR. Transparent polyethylene mulch had a negative effect on growth of garlic. However, it had relatively higher RGR except 75 DAP and the non-irrigated control had the highest RGR. The exotic cultivar had higher biomass production, LAI, TDM and CGR but lower RGR in comparison to the local one.
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