Physiological Aspects of (Panicum miliaceum L.) under different water supply, weeding, herbicide and growth regulators combination for competitive ability against weed
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 1
Abstract
Plant growth regulators are the main factors in formation of grain yield. But their physiological roles are not well known. In example, about the roles of Auxins in grains growth regulations are not similar viewpoints. Drought stress is one of the most important and effective factors on crops growth & performance decrease. This work assesses physiological aspects of (Panicum miliaceum L.) under different water supply, weeding, herbicide and growth regulators combination for competitive ability against weed. Hence, Farm experiment was carried out in a factorial arrangement based on randomized complete block design (RCBD) in four replications during, during 2010-2011seasons in Fars agricultural and natural recources resrearch center located in Zarqan, Fars, Iran. Irrigation regime (drought stress) as the main factor involved two levels of irrigation at field capacity moisture content and 50% of field capacity moisture content.The second factor involves the application of atrazine, 2,4-D, 2,4- D + flamprop-m isopropyl (Suffix BW), 2,4-D + flufenprop-isopropyl in combination with auxin and tryptophan hormones, hand weeding and free weed control. Irrigation period was performed for nonstress and stress treatments every 10 and 14 days, respectively. Herbicides were applied at 3-4 leaved stage of weeds and after that the hormone treatment were done. To assess treatments sampling were done at five growth stages of millet involves Anthesis, Ear Emergence stage, Pollination, grain filing,and harvest maturity stage. In addition, millet plant height, number of leaves, stems, spike, dry weight of root, leaf, stem and Spike were measured. In this research, results showed that drought stress in more growth stage of millet reduced the plant height, number of leaves, stems and spike of millet. In all treatments, application of Suffix BW with auxin and tryptophan hormones increased the millet height, number of leaves, number of stems, number of spike, stem dry weight, leaf dry weight and spike dry weight in more growth stages. It should be noted that at all, application of Suffix BW in combined with auxin and tryptophan hormones at none-stress condition was most effective at increasing of millet morphological traits at different growth stages.
Authors and Affiliations
Masoud Erfani, Omid alizadeh, Hamid Reza Miri
Keywords
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