Effects of Straw Mulch, Spent Mushroom Compost, and Fumigation on the Density of Colorado Potato Beetles (Coleoptera: Chrysomelidae) in Potatoes

1996 ◽  
Vol 89 (5) ◽  
pp. 1267-1280 ◽  
Author(s):  
K. A. Stoner ◽  
F. J. Ferrandino ◽  
M. P. N. Gent ◽  
W. H. Elmer ◽  
J. A. Lamondia
Plant Disease ◽  
1999 ◽  
Vol 83 (4) ◽  
pp. 371-376 ◽  
Author(s):  
M. P. N. Gent ◽  
J. A. LaMondia ◽  
F. J. Ferrandino ◽  
W. H. Elmer ◽  
K. A. Stoner

Single potato plants (Solanum tuberosum cv. Superior) were grown in microplots in soil that was fumigated and then infested with Verticillium dahliae, Pratylenchus penetrans, or both to evaluate the effects of these pathogens and of cultural treatments with spent mushroom compost or straw mulch on gas exchange of potato leaves. Photosynthesis and transpiration of terminal leaflets of a cohort of similar-aged leaves were measured once a week from the time of expansion until they senesced. Over all measurements, gas exchange per unit leaf area was less for plants in microplots infested with V. dahliae or P. penetrans than for those in uninfested plots. For leaves that expanded in early June, gas exchange was similar immediately after leaf expansion but declined more quickly when microplots were infested with one or both pathogens compared to no infestation. Overall, leaf gas exchange was increased by compost amendment but not affected by straw mulch. Compost amendment prevented some of the decline in gas exchange due to infestation by one or both pathogens. For leaves that expanded in July, compost increased the gas exchange immediately after expansion in both infested and non-infested plots.


1998 ◽  
Vol 6 (4) ◽  
pp. 45-56 ◽  
Author(s):  
M.P.N. Gent ◽  
W.H. Elmer ◽  
K.A. Stoner ◽  
F.J. Ferrandino ◽  
J.A. LaMondia

Plant Disease ◽  
1999 ◽  
Vol 83 (4) ◽  
pp. 361-366 ◽  
Author(s):  
J. A. LaMondia ◽  
M. P. N. Gent ◽  
F. J. Ferrandino ◽  
W. H. Elmer ◽  
K. A. Stoner

Single potato plants (Solanum tuberosum) cv. Superior were grown in field microplots to evaluate the effects of spent mushroom compost or straw mulch on early dying of potato caused by Verticillium dahliae and/or Pratylenchus penetrans. Prior to planting, soil was fumigated, placed in field microplots, and then infested with pathogens. Area under the senescence progress curve (AUSPC) was greater for plots infested with V. dahliae and/or P. penetrans than for noninfested plots. Plants grown in soil infested with both pathogens developed symptoms earlier than plants grown in soil infested with a single pathogen. Both V. dahliae and P. penetrans reduced yields; the combination of pathogens reduced marketable tuber yields by 22 to 44% (A- and B-sized tubers). Although the total number of tubers of all sizes was not affected by cultural or pathogen treatments, the addition of compost increased marketable tuber weight and decreased AUSPC. Soil amendment with spent mushroom compost may be a means of reducing the effects of potato early dying and increasing tuber yield when one or both pathogens are present.


2022 ◽  
Vol 146 ◽  
pp. 101-102
Author(s):  
Juliana Marques Ferreira ◽  
Fabio Ribeiro Braga ◽  
Filippe Elias de Freitas Soares

2016 ◽  
Vol 45 (6) ◽  
pp. 281-287 ◽  
Author(s):  
Shen-Chang Chang ◽  
Min-Jung Lin ◽  
Yun-Peng Chao ◽  
Chung-Jen Chiang ◽  
Yu-Shine Jea ◽  
...  

2014 ◽  
Vol 6 (7) ◽  
Author(s):  
E. L. S. Marques ◽  
E. T. Martos ◽  
R. J. Souza ◽  
R. Silva ◽  
D. C. Zied ◽  
...  

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