scholarly journals Розовая гниль картофеля опасное заболевание для южных регионов России

Author(s):  
M.D. Erohova ◽  
M.A. Kuznecova

Описано такое заболевание картофеля как розовая гниль картофеля, вызываемое оомицетом Phytophthora erythroseptica. Показаны симптомы заболевания и присутствие возбудителей этого патогена в России и мире. Рекомендовано в случае появления Phytophthora erythroseptica на полях и в картофелехранилищах проведение комплекса мероприятий в рамках интегрированной системы защиты от этого заболевания.Described this disease of the potato pink rot of potatoes caused by Phytophthora erythroseptica oomycetes. The symptoms of the disease and the presence of pathogens of this pathogen in Russia and the world are shown. In case of emerging of Phytophthora erythroseptica in fields and potato storages, the Integrated Disease Management against this pest needs implementing.

2014 ◽  
Vol 8 ◽  
pp. 67-76 ◽  
Author(s):  
Krishna K. Shrestha ◽  
Richard Ashley

Tomato late blight caused by Phytophthora infestans (Mont.) de Bary is a  serious disease of tomato and potato worldwide. The disease causes severe  crop losses in the tomato growing regions of the world. Most of the cultivars  grown in the world are reported to be susceptible to late blight. Systemic  fungicides have been used widely in the past, but the disease has developed  resistance over time. The present study was carried out to minimize  fungicide use through integrated pest management. The bio-pesticides  Azadirachta indica (Neem), Artemisia vulgaris (Mugwort) and Trichoderma  viride were tested along with the fungicides Krilaxyl (metalaxyl 8% and  mancozeb 64%) and Dithane M-45 (mancozeb 80%) in Nepal during 2000  and 2001. All three bio-pesticides were found more effective than the control  in reducing development of the disease and they increased yield over the  control by 17 to 41%. However, the fungicides, Krilaxyl and Dithane M-45  were observed even more effective. Two transplanting dates ie first and third  week of July were tested against late blight in rainy season during 2000and  2001 and observed its effect on yields. Lower disease incidence and better  yield were found in the second planting.  Nepal Agric. Res. J. Vol. 8, 2007, pp. 67-76DOI: http://dx.doi.org/10.3126/narj.v8i0.11583


Plant Disease ◽  
2007 ◽  
Vol 91 (10) ◽  
pp. 1305-1309 ◽  
Author(s):  
Khalil I. Al-Mughrabi ◽  
Rick D. Peters ◽  
H. W. (Bud) Platt ◽  
Gilles Moreau ◽  
Appanna Vikram ◽  
...  

The efficacy of metalaxyl-m (Ridomil Gold 480EC) and phosphite (Phostrol) applied at planting in-furrow against pink rot (Phytophthora erythroseptica) of potato (Solanum tuberosum) ‘Shepody’ and ‘Russet Burbank’ was evaluated in field trials conducted in 2005 and 2006 in Florenceville, New Brunswick, Canada. Inoculum made from a metalaxyl-m-sensitive isolate of P. erythroseptica from New Brunswick was applied either in-furrow as a vermiculite slurry at planting or as a zoospore drench in soils adjacent to potato plants in late August. After harvest, the number and weight of tubers showing pink rot symptoms were assessed and expressed as percentages of the total tuber number and total weight of tubers. Metalaxyl-m applied in-furrow was significantly more effective against pink rot than phosphite. The mean percentage of diseased tubers as a percentage of total tuber weight was 1.5% (2005) and 1.2% (2006) for metalaxyl-m-treated plots and 9.6% (2005) and 2.8% (2006) for phosphite-treated plots, a percentage similar to that obtained in inoculated control plots with no fungicide treatment. The mean percentage of diseased tubers expressed as a percentage of the total number of tubers was 1.7% (2005) and 1.3% (2006) for metalaxyl-m-treated plots and 10.1% (2005) and 3.1% (2006) for phosphite-treated plots. Disease incidence was significantly higher using the late-season inoculation technique (respective means in 2005 and 2006 were 9.9 and 3.8% diseased tubers, by weight, and 10.6 and 3.9%, by number) than with the in-furrow inoculation method (respective means in 2005 and 2006 were 3.3 and 0.7% by weight, and 3.7 and 1.3%, by number). The potato cv. Shepody was significantly more susceptible to pink rot (9.9 and 3.3% diseased tubers, by weight, in 2005 and 2006, respectively, and 10.6 and 3.9%, by number) than Russet Burbank (respective means in 2005 and 2006 were 3.4,% and 1.2%, by weight, and 3.7,% and 1.2%, by number). Our findings indicate that metalaxyl applied in-furrow at planting is a viable option for control of pink rot caused by metalaxyl-sensitive strains of P. erythroseptica, whereas phosphite was ineffective.


Author(s):  
Sanjeev Kumar ◽  
S. N. Singh ◽  
U. K. Khare ◽  
Usha Bhale ◽  
Jayant Bhatt ◽  
...  

Author(s):  
Sanjeev Kumar ◽  
Sangita Sahni ◽  
Bishun Deo Prasad

Chickpea (Cicer arietinum) is one of the world’s major legume crops and suffers substantial damage from wilt disease caused by Fusarium oxysporum f. sp. ciceri( Padwick) with yield loss over 60 per cent. It is an important soil borne plant pathogen and is difficult to manage by application of chemical pesticides. Moreover, the chemical control is costly and leads to residual effect. A plethora of reports indictes the efforts made to reduce environmental effects and rationalize the use of pesticides and manage the pathogen more effectively through Integration of Disease Management (IDM). Application of soil amendments and specific bio-control agents also incorporated in IDM which has potential to suppress soil-borne pathogens through manipulation of the physicochemical and microbiological environment. Therefore, IDM approach for controlling chickpea Fusarium wilt might be a cost effective and eco-friendly approach.


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