Abstract
Abstract In order to compare the effects of phosphate solubilizing bacteria as biofertilizer and mineral phosphorous application in optimal date of sowing with delayed cropping date on canola (Brassica napus L.) growth and productivity, a split-plot experiment, using randomized complete block design with three replications, was conducted at Dashate-Naz Agronomy Research Station, in 2014. Four levels of bacterial inoculation (Pseudomonas putida, Pseudomonas fluorescens, singly or in combination) were applied as main plots and five levels of mineral phosphorus (P) application (0, 25, 50, 75, and 100 kg·ha -1 of mineral phosphorous) were applied as sub plots. Canola plant were sown at two dates of sowing, one at optimal date of sowing (30 Sept., 2014) and the other one month later as delayed cropping (30 Oct., 2014). The results obtained showed that effects of bacterial inoculation on number of seeds per pod, number of pods on plant, and seed yield were significant at one percent probability level at both sowing dates. Moreover, rates of phosphate application had significant effects on all traits at one percent level. Comparing the means showed that application of mineral P resulted in substantial increase in seed yield. At optimal date of sowing, it was shown that while minimum seed yield obtained at control treatment (1600 kg·ha -1 ), the maximum (2980 kg·ha -1 ) obtained with interaction effects of application of both bacterial strains along with 75 kg·ha -1 mineral P, having no statistically difference with that of P. fluorescens, along with 75 kg·ha -1 mineral P (2940 kg·ha -1 ). It was shown that delayed cropping resulted in decreasing canola growth which is reflected in seed yield and yield components. Minimum seed yield at control plot at first date of sowing (1600 kg·ha -1 ) decreased to 740 kg·ha -1 , in the second date of sowing, showing 54 % decrease. The maximum seed yield also decreased in delayed cropping, from 2980 kg·ha -1 at 30 Sept., 2014, as compared to 1074 kg·ha -1 at 30 Oct., 2014, showing a 64% decrease. The results obtained showed that an increase in P level, eventually enhanced the seed yield. This increasing trend continued until a threshold level (75 kg·ha -1 of P), after which seed yield showed a declining fashion.
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Claims 11
Claim · model-written summary
Bacterial inoculation significantly affected seeds per pod, pods per plant and seed yield of canola at both sowing dates.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- bacterial inoculatione1
- Interactor
- Pseudomonas putida
Pseudomonas putidae0symbiont - Second interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense0symbiont - Outcome
- number of seeds per pod, number of pods on plant, and seed yielde1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
.JPG?width=500)
Verbatim
t0“Response of Canola”
e0“Four levels of bacterial inoculation (Pseudomonas putida, Pseudomonas fluorescens, singly or in combination)”
e1“effects of bacterial inoculation on number of seeds per pod, number of pods on plant, and seed yield were significant at one percent probability level at both sowing dates”
Claim · model-written summary
Rates of phosphate application significantly affected all canola traits.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- rates of phosphate applicatione2
- Outcome
- all traitse2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e2“rates of phosphate application had significant effects on all traits at one percent level”
Claim · model-written summary
Application of mineral P substantially increased canola seed yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- application of mineral Pe3
- Outcome
- seed yielde3
- Direction
- substantial increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e3“application of mineral P resulted in substantial increase in seed yield”
Claim · model-written summary
At the optimal sowing date, the control treatment gave a minimum seed yield of 1600 kg/ha.
- Taxon
- canolaBrassica napus var. napust0
- Outcome
- minimum seed yielde4
- Value
- 1600 kg·ha -1e4
- Qualifier
- control treatmente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e4“while minimum seed yield obtained at control treatment (1600 kg·ha -1 ), the maximum (2980 kg·ha -1 ) obtained with interaction effects of application of both bacterial strains along with 75 kg·ha -1 mineral P”
Claim · model-written summary
At the optimal sowing date, the combined bacterial and 75 kg/ha mineral P treatment gave the maximum seed yield of 2980 kg/ha.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- application of both bacterial strains along with 75 kg·ha -1 mineral Pe4
- Outcome
- seed yielde4
- Direction
- maximume4
- Value
- 2980 kg·ha -1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e4“while minimum seed yield obtained at control treatment (1600 kg·ha -1 ), the maximum (2980 kg·ha -1 ) obtained with interaction effects of application of both bacterial strains along with 75 kg·ha -1 mineral P”
Claim · model-written summary
The combination of P. fluorescens with 75 kg/ha mineral P gave seed yield not statistically different from the combined bacterial treatment, 2940 kg/ha.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- application of both bacterial strains along with 75 kg·ha -1 mineral Pe4
- Interactor
- P. fluorescensPseudomonas fluorescense5symbiont
- Outcome
- seed yielde4
- Direction
- no statistically differencee5
- Value
- 2940 kg·ha -1e5
- Comparator
- P. fluorescens, along with 75 kg·ha -1 mineral Pe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e4“while minimum seed yield obtained at control treatment (1600 kg·ha -1 ), the maximum (2980 kg·ha -1 ) obtained with interaction effects of application of both bacterial strains along with 75 kg·ha -1 mineral P”
e5“having no statistically difference with that of P. fluorescens, along with 75 kg·ha -1 mineral P (2940 kg·ha -1 )”
Claim · model-written summary
Delayed cropping decreased canola growth.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- delayed croppinge6
- Outcome
- canola growthe6
- Direction
- decreasinge6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e6“delayed cropping resulted in decreasing canola growth which is reflected in seed yield and yield components”
Claim · model-written summary
Minimum seed yield at the second sowing date was 54% lower than at the first sowing date.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- second date of sowinge7
- Outcome
- Minimum seed yielde7
- Direction
- decreasede7
- Value
- 54 %e7
- Comparator
- first date of sowinge7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e7“Minimum seed yield at control plot at first date of sowing (1600 kg·ha -1 ) decreased to 740 kg·ha -1 , in the second date of sowing, showing 54 % decrease”
Claim · model-written summary
Maximum seed yield at the delayed sowing date was 64% lower than at 30 Sept., 2014.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- delayed croppinge0
- Outcome
- maximum seed yielde0
- Direction
- decreasede0
- Value
- 64%e0
- Comparator
- at 30 Sept., 2014e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e0“The maximum seed yield also decreased in delayed cropping, from 2980 kg·ha -1 at 30 Sept., 2014, as compared to 1074 kg·ha -1 at 30 Oct., 2014, showing a 64% decrease”
Claim · model-written summary
An increase in P level enhanced canola seed yield up to the threshold of 75 kg/ha P.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- an increase in P levele1
- Outcome
- seed yielde1
- Direction
- enhancede1
- Qualifier
- eventuallye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e1“an increase in P level, eventually enhanced the seed yield”
Claim · model-written summary
Above the threshold level of 75 kg/ha P, canola seed yield declined.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- threshold level (75 kg·ha -1 of P)e1
- Outcome
- seed yielde1
- Direction
- declininge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of Canola”
e1“This increasing trend continued until a threshold level (75 kg·ha -1 of P), after which seed yield showed a declining fashion”
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See all 71 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.