Abstract
Experiments were conducted in 1997 at two sites (Burr and Dixon) in the Black soil zone, east - central Saskatchewan, to examine the effects of different rates and methods of application of swine and cattle manure applied to previously unmanured soils. Liquid hog manure and solid feedlot cattle manure were land applied at nitrogen rates ranging from 74 kg / ha to 790 kg / ha and the effects on soil fertility and canola yield were assessed. There was considerable spatial and temporal variability in the nutrient concentrations within the hog and cattle manure used in the study. Land application of hog manure had a greater effect than cattle manure on increasing soil available nutrients and crop yield in the year of application. However, residual effects of the 1997 applications of cattle manure became apparent in 1998 in the form of higher yields than the control plots. Soil nitrate levels increased with increasing hog manure and urea application rates at both sites and this was mainly restricted to the top 30 cm. Appreciable amounts of residual inorganic N (~ 450 kg N /ha) remained in the soil after harvest at the high hog manure rate (~20000 gallons/acre) at the Burr site. Although extractable soil inorganic P and K levels were not significantly affected by manure additions, crop P and K uptake and straw concentrations increased with application rate. The soil pH and soluble salt levels were unaffected by hog and cattle manure additions at both sites in the first year of application. Grain and straw yields significantly increased following hog and cattle manure additions at Dixon, but these increases were not statistically significant at Burr due to high variability in soil properties across the plot area. The yield responses to application of manure are mainly attributed to their effect on soil nitrogen availability. The low (-6000 gallons / ac) hog manure application injected using a 30 cm spacing resulted in the highest yields at Burr, while the medium rate at Dixon (-7000 gallons /ac) was most effective.
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Claims 15
Claim · model-written summary
Hog manure increased soil nutrients and crop yield more than cattle manure in the application year.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse1 - Treatment
- hog manuree0
- Outcome
- crop yielde0
- Direction
- greatere0
- Qualifier
- in the year of applicatione0
- Comparator
- cattle manuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Land application of hog manure had a greater effect than cattle manure on increasing soil available nutrients and crop yield in the year of application”
e1“canola yield”
Claim · model-written summary
Residual cattle manure increased yield in 1998 relative to control plots.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- cattle manuree0
- Outcome
- yieldse0
- Direction
- highere0
- Qualifier
- in 1998e0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“residual effects of the 1997 applications of cattle manure became apparent in 1998 in the form of higher yields than the control plots”
e1“canola yield”
Claim · model-written summary
Soil nitrate increased with increasing hog manure application rates at both sites.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- hog manuree0
- Outcome
- Soil nitrate levelse0
- Direction
- increasede0
- Qualifier
- top 30 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil nitrate levels increased with increasing hog manure and urea application rates at both sites and this was mainly restricted to the top 30 cm”
e1“canola yield”
Claim · model-written summary
Soil nitrate increased with increasing urea application rates at both sites.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- ureae0
- Outcome
- Soil nitrate levelse0
- Direction
- increasede0
- Qualifier
- top 30 cme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil nitrate levels increased with increasing hog manure and urea application rates at both sites and this was mainly restricted to the top 30 cm”
e1“canola yield”
Claim · model-written summary
High hog manure application left appreciable soil inorganic nitrogen after harvest at Burr.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- high hog manure rate (~20000 gallons/acre)e0
- Outcome
- residual inorganic Ne0
- Value
- ~ 450 kg N /hae0
- Setting
- Burre0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Appreciable amounts of residual inorganic N (~ 450 kg N /ha) remained in the soil after harvest at the high hog manure rate (~20000 gallons/acre) at the Burr site”
e1“canola yield”
Claim · model-written summary
Manure additions did not significantly affect extractable soil inorganic phosphorus and potassium.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- manure additionse0
- Outcome
- extractable soil inorganic P and K levelse0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“extractable soil inorganic P and K levels were not significantly affected by manure additions”
e1“canola yield”
Claim · model-written summary
Crop phosphorus and potassium uptake increased with manure application rate.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- application ratee0
- Outcome
- crop P and K uptakee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop P and K uptake and straw concentrations increased with application rate”
e1“canola yield”
Claim · model-written summary
Straw phosphorus and potassium concentrations increased with manure application rate.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- application ratee0
- Outcome
- straw concentrationse0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop P and K uptake and straw concentrations increased with application rate”
e1“canola yield”
Claim · model-written summary
Hog manure did not affect soil pH and soluble salts in the first year.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- hog manuree2
- Outcome
- soil pH and soluble salt levelse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil pH and soluble salt levels were unaffected by hog and cattle manure additions at both sites in the first year of application”
e1“canola yield”
e2“Land application of hog manure had a greater effect than cattle manure”
Claim · model-written summary
Cattle manure did not affect soil pH and soluble salts in the first year.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- cattle manure additionse0
- Outcome
- soil pH and soluble salt levelse0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soil pH and soluble salt levels were unaffected by hog and cattle manure additions at both sites in the first year of application”
e1“canola yield”
Claim · model-written summary
Hog manure significantly increased grain and straw yields at Dixon.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- hog manuree2
- Outcome
- Grain and straw yieldse0
- Direction
- increasede0
- Setting
- Dixone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain and straw yields significantly increased following hog and cattle manure additions at Dixon”
e1“canola yield”
e2“Land application of hog manure had a greater effect than cattle manure”
Claim · model-written summary
Cattle manure significantly increased grain and straw yields at Dixon.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- cattle manure additionse0
- Outcome
- Grain and straw yieldse0
- Direction
- increasede0
- Setting
- Dixone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain and straw yields significantly increased following hog and cattle manure additions at Dixon”
e1“canola yield”
Claim · model-written summary
Manure-associated yield increases at Burr were not statistically significant.
- Taxon
- canolaBrassica napus var. napuse1
- Outcome
- increasese0
- Direction
- increasese0
- Setting
- Burre0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these increases were not statistically significant at Burr due to high variability in soil properties across the plot area”
e1“canola yield”
Claim · model-written summary
The low injected hog manure rate gave the highest yield at Burr.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- low (-6000 gallons / ac) hog manure application injected using a 30 cm spacinge0
- Outcome
- yieldse0
- Direction
- higheste0
- Setting
- Burre0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The low (-6000 gallons / ac) hog manure application injected using a 30 cm spacing resulted in the highest yields at Burr”
e1“canola yield”
Claim · model-written summary
The medium hog manure rate was most effective at Dixon.
- Taxon
- canolaBrassica napus var. napuse1
- Treatment
- medium ratee0
- Outcome
- most effectivee0
- Direction
- most effectivee0
- Setting
- Dixone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the medium rate at Dixon (-7000 gallons /ac) was most effective”
e1“canola yield”
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