Two field experiments were carried out during 1982/83 and 1983/84 seasons at Experimental Farm of National Research Centre at Shalakan, Kalubia Governorate, Egypt, to study the reversal effect of glyphosate induced phytotoxicity on growth and yield and its components of faba bean by the application of growth factors, i.e., growth regulators, amino acids and nutrient elements at different concentrations. A split plot design with four replications was used in both seasons. The obtained results indicated clearly that: Glyphosate at the two higher doses exhibited varying degrees of phytotoxic symptoms and reduced all the faba bean plant characters except the number of branches/plant. GA3 alone or in a mixture with cytokinin reversed the phytotoxic effect of the glyphosate herbicide on decreasing the plant height. Cytokinin at 4/1000, phenylalanine and tryptophan at both levels, as well as GA3 at 50 ppm, reversed the phytotoxic effect of the glyphosate herbicide on decreasing the dry weight/plant cytokinin at 4/1000, tryptophan at both concentrations, as well as, phenylalanine at 500 ppm, reversed the phytotoxic effect of the glyphosate herbicide on decreasing the number and dry weight of pods, seed yield per plant and per ha.
Two field experiments were carried out during 1984 and 1985 seasons at the Farm of Shandaweel Agric. Res. Station, A. R. C, Ministry of Agric. (Egypt), to study the effect of five herbicides applied as a single or in tank mixtures as well as hoeing treatment on sesame plants and dominated annual weeds under Upper Egypt growing conditions. The herbicides alachlor at 2.304, pendimethalin at 2.040, linuron at 1.200, diuron at 0.960 and prometryn at 1.920 kg a.i./ha were applied preemergence as a single herbicides, as well as alachlor and pendimethalin combined with linuron, diuron or prometryn at the same rates. Two checks were included, one was left without weed removal, while the other was hand‐hoed.
Pendimethalin at 2.040 applied alone or in mixtures with linuron at 1.200 or with diuron at 0.960 kg a.i./ha gave the best grass weed control, while excellent effectiveness against annual broad‐leaves was obtained by linuron at 1,200 and diuron at 0.960 kg a.i./ha alone or in mixtures with pendimethalin at 2.040 kg a.i./ha. Whereas, pendimithalin at 2.040 applied alone or in tank mixtures with linuron at 1.200 or with diuron at 0.960 kg a.i./ha gave the best control for total annual weeds and higher seed yield of sesame as well as other yield contributing characters.
The discrete PoIssoN-inverse Gaussian distribution is obtained by compounding the POISSON dietribution with the inveree-Gausaian distribution. The maximum likelihood of the parameter is
discussed. Comparison with the POISBON, negative binomial, P O I S S O N -~D L S Yand the generalized WAILING distribution when fitting a dietribution to accident statistics data ie given.
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