Abstract
An experiment was carried out on the University of British Columbia farm dealing with the use of calcium cyanamide (known commercially as "Aero Cyanamid, Granular" or "Cyanamid”) as a weedicide and fertilizer under British Columbia coast conditions. Three rates of Cyanamid and a Control consisting of a 4 - 10 - 10 fertilizer treatment were tested in conjunction with two times of application. On a four by two factorial arrangement, this resulted in eight distinct treatment combinations, each of which was replicated three times in randomized blocks. The planting plan was duplicated for the two vegetables, carrots and turnips. Weed control in the plots was observed, yield of carrots and turnips taken, and nutritional value of the vegetable assessed on the basis of chemical analyses. Several interesting relationships were revealed under the conditions of the experiment. The response of the two vegetables to the treatments was similar for some of the factors studied and different for others. The time of Cyanamid application was found to be of great significance. Its effect was manifested in the weed control study, and in the yield and nutritional value of carrots and turnips. The degree of weed control was increased by increments of Cyanamid. Pre - emergence applications resulted in better weed control than did pre - planting applications. Best yield of carrots and turnips resulted from the use of the 300 lb. Cyanamid per acre, pre - planting treatment. Pre - emergence applications (300 and 500 lb. Cyanamid per acre) killed many young carrot and turnip plants, thereby decreasing yield. Increments of calcium cyanaxaide increased the protein content of carrots and turnips. The root/top ratio, titratable acidity, and carotinoid pigment content values showed no significant differences as a result of the treatments. Cyanamid treatments in general, as compared to the Control treatment, tended to increase the total soluble solids and vitamin C values, but tended to decrease the dry weight, ash weight, and conductivity values. Pre - emergence treatments, as compared to pre - planting treatments, tended to increase weed control, ash content, conductivity values, and protein content, but tended to decrease yield. The results of this experiment indicate that calcium cyanamide is an effective weedicide and fertilizer when properly used.
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Claims 12
Claim · model-written summary
Degree of weed control in carrot and turnip plots increased with increments of Cyanamid.
- Taxon
- carrots and turnips
Daucus carota.jpg?width=60)
Brassica rapa subsp. rapat0 - Treatment
- increments of Cyanamide1
- Outcome
- degree of weed controle1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“The degree of weed control was increased by increments of Cyanamid”
t0“carrots and turnips”
Claim · model-written summary
Pre-emergence applications gave better weed control than pre-planting applications in carrots and turnips.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Pre - emergence applicationse2
- Outcome
- weed controle2
- Direction
- bettere2
- Comparator
- pre - planting applicationse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Pre - emergence applications resulted in better weed control than did pre - planting applications”
t0“carrots and turnips”
Claim · model-written summary
The 300 lb. Cyanamid per acre pre-planting treatment gave the best yield of carrots and turnips.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- 300 lb. Cyanamid per acre, pre - planting treatmente3
- Outcome
- yielde3
- Direction
- Beste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Best yield of carrots and turnips resulted from the use of the 300 lb. Cyanamid per acre, pre - planting treatment”
t0“carrots and turnips”
Claim · model-written summary
Pre-emergence applications of 300 and 500 lb. Cyanamid per acre killed many young carrot and turnip plants and decreased yield.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Pre - emergence applications (300 and 500 lb. Cyanamid per acre)e4
- Outcome
- yielde4
- Direction
- decreasinge4
- Qualifier
- killed many young carrot and turnip plantse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Pre - emergence applications (300 and 500 lb. Cyanamid per acre) killed many young carrot and turnip plants, thereby decreasing yield”
t0“carrots and turnips”
Claim · model-written summary
Increments of calcium cyanaxaide increased protein content of carrots and turnips.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- calcium cyanaxaidee5
- Outcome
- protein contente5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Increments of calcium cyanaxaide increased the protein content of carrots and turnips”
t0“carrots and turnips”
Claim · model-written summary
Root/top ratio, titratable acidity and carotenoid pigment content of carrots and turnips showed no significant differences among treatments.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- the treatmentse6
- Outcome
- root/top ratio, titratable acidity, and carotinoid pigment content valuese6
- Direction
- no significant differencese6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The root/top ratio, titratable acidity, and carotinoid pigment content values showed no significant differences as a result of the treatments”
t0“carrots and turnips”
Claim · model-written summary
Cyanamid treatments tended to increase total soluble solids and vitamin C values of carrots and turnips compared with the control.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Cyanamid treatmentse7
- Outcome
- total soluble solids and vitamin C valuese7
- Direction
- tended to increasee7
- Comparator
- Control treatmente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Cyanamid treatments in general, as compared to the Control treatment, tended to increase the total soluble solids and vitamin C values, but tended to decrease the dry weight, ash weight, and conductivity values”
t0“carrots and turnips”
Claim · model-written summary
Cyanamid treatments tended to decrease dry weight, ash weight and conductivity values of carrots and turnips compared with the control.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Cyanamid treatmentse7
- Outcome
- dry weight, ash weight, and conductivity valuese7
- Direction
- tended to decreasee7
- Comparator
- Control treatmente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Cyanamid treatments in general, as compared to the Control treatment, tended to increase the total soluble solids and vitamin C values, but tended to decrease the dry weight, ash weight, and conductivity values”
t0“carrots and turnips”
Claim · model-written summary
Pre-emergence treatments tended to increase weed control, ash content and conductivity values compared with pre-planting treatments.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Pre - emergence treatmentse1
- Outcome
- weed control, ash content, conductivity valuese1
- Direction
- tended to increasee1
- Comparator
- pre - planting treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre - emergence treatments, as compared to pre - planting treatments, tended to increase weed control, ash content, conductivity values, and protein content, but tended to decrease yield”
t0“carrots and turnips”
Claim · model-written summary
Pre-emergence treatments tended to increase protein content of carrots and turnips compared with pre-planting treatments.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Pre - emergence treatmentse1
- Outcome
- protein contente1
- Direction
- tended to increasee1
- Comparator
- pre - planting treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre - emergence treatments, as compared to pre - planting treatments, tended to increase weed control, ash content, conductivity values, and protein content, but tended to decrease yield”
t0“carrots and turnips”
Claim · model-written summary
Pre-emergence treatments tended to decrease yield of carrots and turnips compared with pre-planting treatments.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Treatment
- Pre - emergence treatmentse1
- Outcome
- yielde1
- Direction
- tended to decreasee1
- Comparator
- pre - planting treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre - emergence treatments, as compared to pre - planting treatments, tended to increase weed control, ash content, conductivity values, and protein content, but tended to decrease yield”
t0“carrots and turnips”
Claim · model-written summary
The authors conclude that calcium cyanamide is an effective weedicide and fertilizer for carrots and turnips when properly used.
- Taxon
- carrots and turnipsDaucus carotaBrassica rapa subsp. rapat0
- Outcome
- effective weedicide and fertilizer when properly usede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The results of this experiment indicate that calcium cyanamide is an effective weedicide and fertilizer when properly used”
t0“carrots and turnips”