Abstract
Field studies reported here have shown that poor growth of safflower after years of rice tends to be associated with acute phosphorus deficiency. Applications of treble superphosphate, 11–48 and 10–50 ammonium phosphate dramatically increased seedling growth and yield of grain when placed with, or 1 inch below seed. Applications of 200 lbs of 11–48 or 10–50 one inch below the seed were found safe and economic under conditions of these Colusa County experiments. Applications of 100 lbs of 11–48 or 10–50 in the seed row were also found to be safe and effective, as shown in tests in both Colusa and Glenn counties. Generalizations are not yet possible on such questions as: (1) why some rice soils are phosphorus-deficient for safflower; (2) the critical soil phosphorus level for safflower the year following rice; (3) the amount of P required for maximum yields; and (4) other nutrients or soil conditions affecting safflower performance on old rice lands.
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Claims 5
Claim · model-written summary
Poor safflower growth after years of rice tended to associate with acute phosphorus deficiency.
- Taxon
- safflower
Carthamus tinctoriuse0 - Compound
- phosphoruse0
- Outcome
- poor growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“poor growth of safflower after years of rice tends to be associated with acute phosphorus deficiency”
Claim · model-written summary
Placed treble superphosphate or ammonium phosphate dramatically increased safflower seedling growth.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- treble superphosphate, 11–48 and 10–50 ammonium phosphatee0
- Outcome
- seedling growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of treble superphosphate, 11–48 and 10–50 ammonium phosphate dramatically increased seedling growth and yield of grain when placed with, or 1 inch below seed”
t0“safflower”
Claim · model-written summary
Placed treble superphosphate or ammonium phosphate dramatically increased grain yield.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- treble superphosphate, 11–48 and 10–50 ammonium phosphatee0
- Outcome
- yield of graine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of treble superphosphate, 11–48 and 10–50 ammonium phosphate dramatically increased seedling growth and yield of grain when placed with, or 1 inch below seed”
t0“safflower”
Claim · model-written summary
The 200 lb below-seed ammonium phosphate applications were safe and economic in Colusa County.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- 200 lbs of 11–48 or 10–50 one inch below the seede0
- Outcome
- safe and economice0
- Setting
- Colusa Countye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of 200 lbs of 11–48 or 10–50 one inch below the seed were found safe and economic under conditions of these Colusa County experiments”
t0“safflower”
Claim · model-written summary
The 100 lb seed-row ammonium phosphate applications were safe and effective in Colusa and Glenn counties.
- Taxon
- safflowerCarthamus tinctoriust0
- Treatment
- 100 lbs of 11–48 or 10–50 in the seed rowe0
- Outcome
- safe and effectivee0
- Setting
- Colusa and Glenn countiese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applications of 100 lbs of 11–48 or 10–50 in the seed row were also found to be safe and effective, as shown in tests in both Colusa and Glenn counties”
t0“safflower”
The same questions in other papers
phosphorus · growth · Carthamus tinctorius (safflower)Results agree
2 papers in the same direction as this paper
- positive
- positive
phosphorus · yield · Carthamus tinctorius (safflower)Results agree
10 papers in the same direction as this paper
- positive
- positive
- positive
7 papers more in this group
See all 11 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.