Plant Protection Science, 2011 (vol. 47), issue 3

Fungitoxic activity of Solanum torvum against Fusarium sacchari

Shailendra Kumar Gupta, Satish Chandra Tripathi

Plant Protect. Sci., 2011, 47(3):83-91 | DOI: 10.17221/56/2010-PPS  

The leaf extract of Solanum torvum Sw. (Solanaceae) was evaluated for its fungitoxic activity against Fusarium sacchari (E.J. Butler & Hafiz Khan) W. Gams (1971). The leaf extract was found to inhibit completely the mycelial growth of the test fungus at minimum 0.5 ml/ml dose by the poisoned food technique. The nature of the extract was fungicidal at 0.5 ml/ml dose, since no further revival of growth was observed in inoculated plates even after incubation for 6 days after inoculation. The extract required minimally 5 min to kill the test fungus at its MIC. The extract also inhibited the growth of 12 other pathogenic fungi...

Ascorbic acid, thiamine or salicylic acid induced changes in some physiological parameters in wheat grown under copper stress

Abdel-Basset Mohamed Al-Hakimi, Afaf Mohamed Hamada

Plant Protect. Sci., 2011, 47(3):92-108 | DOI: 10.17221/20/2010-PPS  

The fresh and dry weight of roots and shoots of wheat seedlings showed a marked decrease as the concentration of copper (Cu) was increased. The contents of pectin, cellulose, soluble carbohydrates, and phospholipids in the roots and shoots of test plants were significantly lowered with the rise of Cu concentration. However, hemicellulose, lignin, total lipids, glycolipids, sterols and proline of roots and shoots were raised under Cu stress. Cu treatment also induced the stimulation of soluble, total and cell wall associated proteins, other free amino acids and total carbohydrates in shoots and a slight reduction in roots. The adverse effects of Cu...

Ovicidal effects of thiacloprid, acetamiprid, lambda-cyhalothrin and alpha-cypermethrin on Bruchus pisorum L. (Coleoptera: Chrysomelidae) eggs

Marek Seidenglanz, Jiří Rotrekl, Jana Poslušná, Pavel Kolařík

Plant Protect. Sci., 2011, 47(3):109-114 | DOI: 10.17221/71/2010-PPS  

The effects of two pyrethroid (lambda-cyhalothrin, alpha-cypermethrin) and two neonicotinoid (acetamiprid, thiacloprid) insecticides on B. pisorum L. eggs were compared under field conditions in the Czech Republic in 2005-2007. The main objective of the study was to find out what real effects can be expected from the available insecticides registered in Europe when applied at the time of the first egg occurrence on lower pods. In general, the rates of Bruchus pisorum egg (+ first instar larvae) survival were significantly lower with all the insecticides compared in the study, in each of the three years (2005, 2006, 2007). The tested...

Comparative toxicity of certain pesticides to peach fruit fly, Bactrocera zonata Saunders (Diptera: Tephritidae) under laboratory conditions

Yahia Youssef Mosleh, Saber. F. M. Moussa, Lamiaa H. Y. Mohamed

Plant Protect. Sci., 2011, 47(3):115-120 | DOI: 10.17221/52/2009-PPS  

Peach fruit fly, Bactrocera zonata (Saunders) (Diptera: Tephritidae), has been a serious pest in the last decade attacking a wide range of fruits in Egypt. The toxicity of Malathion, Diazinon, Methoxyfenozide, and Lufenuron to adult males and females of Bactrocera zonata was studied under laboratory conditions. Diazinon was the most toxic among the tested compounds followed by Malathion, Lufenuron and Methoxyfenozide to Bactrocera zonata at 24 h post treatment, the respective LC₅₀ values were 0.20 ppm, 0.48ppm, 8.97ppm, and 9.73ppm for males and 0.26 ppm, 0.91ppm, 11.26ppm, and 14.12ppm for females. At 48 h post...

Toxicological and biochemical effects of some insecticides on peach fly, Bactrocera zonata (Diptera: Tephritidae)

Yahia Youssef Mosleh, Lamiaa Housein Yousry, Adel Abo-El-Elaa

Plant Protect. Sci., 2011, 47(3):121-130 | DOI: 10.17221/51/2009-PPS  

The peach fruit fly, Bactrocera zonata (Saunders, Diptera: Tephritidae), has been a serious pest in the last decade attacking a wide range of fruits in Egypt. The toxicity of Malathion, Diazinon, Methoxyfenozide and Lufenuron to adult males and females of B. zonata was studied under laboratory conditions. The results showed that Diazinon was the most toxic among the tested compounds followed by Malathion, Lufenuron and Methoxyfenozide. LC₅₀ values for adult males and females were 0.20 ppm, 0.09 ppm and 0.02 ppm (for males), 0.91 ppm, 0.14 ppm and 0,01 ppm (for females), respectively. The results showed that the level of...

Professor Vladimír Táborský, MSc., PhD., Octogenarian

P. Ryšánek, J. Polák

Plant Protect. Sci., 2011, 47(3):131-132 | DOI: 10.17221/2814-PPS