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Abstract
To investigate the effect of foliar methanol application on wheat
plants, two field experiments were conducted in winter seasons of
2006/2007 and 2007/2008 in El-Bouseily Research Station, Agricultural
Research Center (ARC) at El-Behira Governorate, and at the Research
and Experimental Station Farm of Faculty of Agriculture, Ain Shams
University at Shalakan, Kalubiya Governorate. Each experiment was designed
in complete randomized blocks and contained 10 treatments which
were the combinations of three methanol concentrations (10, 20 and 30%
v/v), and three spraying intervals being 15, 30 and 45 days (7, 4 and 3
spraying times, respectively) as well as the control treatment, i.e. tap water
every 15 day. Methanol spraying schedule was started at 40 days after
planting and continued up to the end of March (at grain milky stage).
Results showed that no phytotoxicity effects at any treatment and location.
Methanol treatments increased number of total tillers, number of
fertile tillers, number of leaves, leaf area index (LAI), total chlorophyll
concentration, number of spikes per m2, number of spikelets per spike,
number of grains per spike, weight of grains per spike, 1000-grain weight,
grain yield per plant and straw yield per plant, grain yield per feddan,
harvest index, biological yield, migration coefficient and radiation use
efficiency (RUE) of wheat than the control. The beneficial impact of foliar
application of methanol on growth, yield and yield attributes of wheat
was mostly concomitant to the reduction in spraying intervals and increase
in methanol concentrations up to 30%. Therefore, methanol 30%
applied 7 times with 15-day intervals treatment gave the highest values
and increased number of tillers per plant, number of fertile tillers, number
of leaves, leaf area index (LAI) and total chlorophyll concentration by
15.0, 16.3, 8.9, 13.2 and 17.8% respectively than the control and increased
grain yield per feddan, harvest index, biological yield, migration
coefficient and radiation use efficiency (RUE) than those of control by
19.8, 6.8, 10.5, 9.6 and 8.9%, respectively.
Enhancing impacts of methanol foliar application on all growth and
productivity assessments of wheat plant in this investigation were more
pronounced under Shalakan environment conditions than under El-
Bouseily ones. Such difference verify that the fruitful response of C3
plants to methanol application is mostly climatically dependent.