Further Experiments on the Chemical Treatment of Soil infected with Heterodera schachtii

1937 ◽  
Vol 15 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Richard H. Hurst ◽  
Marjorie J. Triffitt
Keyword(s):  
Ferric Oxide ◽  
Chemical Treatment ◽  
Field Experiments ◽  
Heterodera Schachtii ◽  
Small Scale ◽  
Chemical Substances ◽  
Calcium Cyanamide ◽  
Scale Field

Preliminary experiments were carried out during 1935, on the possible application of certain chemical substances to the problem of controlling “potato-sickness.” The results were published in two papers by Hurst & Triffitt (1935, i, ii) and it was shown that calcium cyanamide and ferric oxide were deserving of further trials on a larger scale. Field experiments were devised and carried out during 1936 in various parts of the country, and the results will be communicated when these are available. In the meantime the small-scale experiments were continued and are described below.

A Second Series of Field Experiments in Lincolnshire on the Chemical Treatment of Soil infected with Heterodera schachtii

1938 ◽  
Vol 16 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Richard H. Hurst ◽  
Mary T. Franklin
Keyword(s):  
Ferric Oxide ◽  
Chemical Treatment ◽  
Field Experiments ◽  
Heterodera Schachtii ◽  
Kind Permission ◽  
Calcium Cyanamide ◽  
Second Year

Previous experiments on the application of ferric oxide or of calcium cyanamide to “potato-sick” land were carried out at the Kirton Agricultural Institute. The results were reported by Hurst & Franklin (1937), and indicated that ferric oxide had no effect either on the yield of potatoes or on the hatching of H. schachtii larvae, but that calcium cyanamide showed promise and was worthy of further trial. Experiments with this chemical were, by the kind permission of Mr. J. C. Wallace, Principal of the Kirton Agricultural Institute, and with the co-operation of Mr. J. Wood, A.R.C.S., continued for a second year.

Field Experiments in Bedfordshire on the Chemical Treatment of Soil infected with the Potato Eelworm Heterodera schachtii, during 1936—37

1938 ◽  
Vol 16 (1) ◽  
pp. 33-46 ◽  
Author(s):  
Richard H. Hurst ◽  
Mary T. Franklin
Keyword(s):  
Field Experiment ◽  
Ferric Oxide ◽  
Chemical Treatment ◽  
Potato Plant ◽  
Untreated Control ◽  
Field Experiments ◽  
Heterodera Schachtii ◽  
Small Field ◽  
Calcium Cyanamide

Preliminary investigations on the problem of affording protection to the potato plant growing in soil infested with cysts of Heterodera schachtii, were carried out by Hurst & Triffitt (1935, i, ii, 1937). In these experiments promising results were obtained by the application of calcium cyanamide or of ferric oxide to the soil, and trials with these chemicals were designed on a larger'scale. A small field experiment (Hurst & Franklin, 1937) was carried out in Lincolnshire during 1936, using dressings of 30 cwt. per acre of calcium cyanamide and 12 cwt. per acre of ferric oxide. On the cyanamide plots an increased yield of potatoes was accompanied by a relatively small increase in the cyst population of the soil. With ferric oxide the results were not significantly different from those on the untreated control plots.

Field Experiments in Lincolnshire on the Chemical Treatment of Soil infected with Heterodera schachtii

1937 ◽  
Vol 15 (1) ◽  
pp. 9-20 ◽  
Author(s):  
Richard H. Hurst ◽  
Mary T. Franklin
Keyword(s):  
Chemical Treatment ◽  
Field Experiments ◽  
Field Trials ◽  
Heterodera Schachtii ◽  
Small Scale

This communication is concerned with the field trials of substances which in previous small-scale experiments had shown promise of controlling “potatò-sickness” when they were mixed with infected soil.

Small scale field experiments of chlorine dispersion

2002 ◽  
Vol 15 (1) ◽  
pp. 5-10 ◽  
Author(s):  
Aurélia Dandrieux ◽  
Gilles Dusserre ◽  
James Ollivier
Keyword(s):  
Field Experiments ◽  
Small Scale ◽  
Scale Field

scholarly journals Effect of intercropping carrots and onions on damage caused by the carrot fly, Psila rosae (F.) (Dipt., Psilidae)

1991 ◽  
Vol 63 (5) ◽  
pp. 411-414
Author(s):  
Anna-Liisa Varis
Keyword(s):  
Field Experiments ◽  
Small Scale ◽  
Psila Rosae ◽  
Scale Field ◽  
Carrot Fly

In small-scale field experiments carried out in southern Finland in seven successive years, rows of carrots were grown a) between carrot rows, b) between a carrot and an onion row, and c) between onion rows. The damage caused by the carrot fly, Psila rosae (F.) was slightly less in carrot rows adjacent to onion rows than in those adjacent to carrot rows. The infestation by the carrot fly was generally very low.

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