Improvement in Day Zero Recoveries in Field Soil Dissipation Studies Using Larger Diameter Soil Samples

2014 ◽  
Vol 62 (18) ◽  
pp. 4090-4094
Author(s):  
Ashok K. Sharma ◽  
Harry J. Strek ◽  
Aldos C. Barefoot
2001 ◽  
Vol 57 (11) ◽  
pp. 1068-1074 ◽  
Author(s):  
Said K Ibrahim ◽  
Stephen T Minnis ◽  
Anthony D P Barker ◽  
Mike D Russell ◽  
Patrick P J Haydock ◽  
...  

1990 ◽  
Vol 19 (1) ◽  
pp. 56-60 ◽  
Author(s):  
Catherine Thellier ◽  
Kenneth M. Holtzclaw ◽  
J. D. Rhoades ◽  
Garrison Sposito

1976 ◽  
Vol 7 (3) ◽  
pp. 292-300 ◽  
Author(s):  
G. R. Barrie Webster ◽  
Gerald J. Reimer
Keyword(s):  

Author(s):  
Dhanraj Kamble ◽  
Pravin Chavan ◽  
Valmik Jondhale

The present study is devoted to determine the content of K, Na, pH of soil samples collected from Mahad tehsil territory. Elements leached from the deposits of the fertilizers have been accumulated in soil, thus constituting to soil pollution index. Focusing this study was carried out to compare out the nutrient contents of barren soil and Rice field soil in Mahad tehsil tertiary, by Flame photometry analysis.


1996 ◽  
Vol 36 (7) ◽  
pp. 815 ◽  
Author(s):  
A Purwantara ◽  
SP Flett ◽  
PJ Keane

The method currently used for determining races of Phytophthora clandestina requires isolation of pure cultures of the pathogen and testing of their pathogenicity on a range of differential cultivars. To date, the pathogen has not been isolated directly from soil and isolation of the pathogen from naturally infected seedlings is laborious. A bioassay involving the planting of differential cultivars in soil samples in small planting trays was developed to identify races of P. clandestina in soil. The specific races of the pathogen in the soil were determined by assessing the disease severity and the extent of sporulation of the pathogen on the roots of the differential cultivars. A more rapid baiting method using cotyledons of differential cultivars in flooded soil samples was also developed to determine the presence of different races in the samples. Both bioassays were used to confirm the presence of race 0 and race 1 in separate paddocks at Rutherglen, northern Victoria, over 4 seasons. The presence in field soil of another root rot pathogen of subterranean clover, Aphanomyces euteiches, was also detected using these techniques.


1976 ◽  
Vol 3 (2) ◽  
pp. 72-74 ◽  
Author(s):  
R. E. Motsinger ◽  
J. L. Crawford ◽  
S. S. Thompson

Abstract A random survey of 467 peanut and cotton fields in 17 counties of Southwest Georgia was conducted to determine the frequency of occurrence and distribution of parasitic nematodes associated with peanuts and cotton. Meloidogyne species were present in 9.7% of the peanut field soil samples, Pratylenchus spp. (primarily brachyurus) in 16.9% and Criconemoides ornatus in 97%. Sixty-nine percent of the root-knot associated with peanuts was M. hapla, 25% was M. arenaria and 6% was a mixture of both. Sting nematodes, Belonolaimus spp., were not found in peanut fields in the survey. In cotton soils, 11.8% of the samples contained Meloidogyne spp., 5.1% Hoplolaimus columbus, and 0.7% Rotylenchulus reniformis.


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