Abstract
Abstract In order to obtain information which might improve yields, lime and fertilizer tests on peas for canning and freezing were conducted in Aroostook County and central Maine over a 4‐year period, 1947–1950. Applying 300–400 pounds of finely ground dolomitic limestone down the drill spout with the pea seed increased the yield of shelled peas on the average by 645 pounds per acre on acid potato soils. With properly inoculated seed lime applications prevented premature yellowing of the vines and resulted in norinal dark green growth of vines without nitrogen fertilization of the crop. Where lime was applied with inoculated seed, application of N or NPK fertilizers resulted in increases in yields of shelled peas of low tenderometer ratings and high quality in only 4 out of 16 experiments. Yields of vines, however, were increased consistently by N fertilization; in most experiments yields of shelled peas of high tenderometer ratings and low quality were also increased. With peas harvested on the same day both lime and nitrogen tended to delay maturity, as shown by lower tenderometer ratings. Since lime and nitrogen have similar effects on yields of peas grown on acid soils, it may be concluded from this study that application of lower costing lime with inoculated pea seed is more profitable than higher costing nitrogen fertilization. Application of nitrogen can usually be justified only to delay maturity of part or all of the crop to facilitate harvesting a high quality pack. Application of P and K fertilizers is recommended only as insurance on soils testing low in these nutrients.
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Claims 11
Claim · model-written summary
Dolomitic limestone increased shelled-pea yield by 645 pounds per acre on acid potato soils.
- Taxon
- peas
Lathyrus oleraceust0 - Treatment
- 300–400 pounds of finely ground dolomitic limestonee0
- Outcome
- yield of shelled pease0
- Direction
- increasede0
- Value
- 645 pounds per acree0
- Setting
- acid potato soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Applying 300–400 pounds of finely ground dolomitic limestone down the drill spout with the pea seed increased the yield of shelled peas on the average by 645 pounds per acre on acid potato soils”
t0“peas”
Claim · model-written summary
Lime prevented premature yellowing of inoculated pea vines.
- Taxon
- peasLathyrus oleraceust0
- Treatment
- lime applicationse0
- Outcome
- premature yellowing of the vinese0
- Direction
- preventede0
- Qualifier
- properly inoculated seede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With properly inoculated seed lime applications prevented premature yellowing of the vines”
t0“peas”
Claim · model-written summary
Lime produced normal dark-green vine growth without nitrogen fertilizer.
- Taxon
- peasLathyrus oleraceust0
- Treatment
- lime applicationse1
- Outcome
- norinal dark green growth of vinese0
- Comparator
- without nitrogen fertilizatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in norinal dark green growth of vines without nitrogen fertilization of the crop”
e1“With properly inoculated seed lime applications prevented premature yellowing of the vines”
t0“peas”
Claim · model-written summary
N or NPK raised high-quality low-tenderometer pea yield in only four of 16 trials where lime and inoculation were used.
- Taxon
- peasLathyrus oleraceust0
- Treatment
- N or NPK fertilizerse0
- Outcome
- yields of shelled peas of low tenderometer ratings and high qualitye0
- Direction
- increasese0
- Value
- 4 out of 16 experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Where lime was applied with inoculated seed, application of N or NPK fertilizers resulted in increases in yields of shelled peas of low tenderometer ratings and high quality in only 4 out of 16 experiments”
t0“peas”
Claim · model-written summary
Nitrogen consistently increased vine yield.
- Taxon
- peasLathyrus oleraceust0
- Treatment
- N fertilizatione0
- Outcome
- Yields of vinese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of vines, however, were increased consistently by N fertilization”
t0“peas”
Claim · model-written summary
Nitrogen increased yield of lower-quality, high-tenderometer peas in most experiments.
- Taxon
- peasLathyrus oleraceust0
- Treatment
- N fertilizatione1
- Outcome
- yields of shelled peas of high tenderometer ratings and low qualitye0
- Direction
- increasede0
- Qualifier
- in most experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in most experiments yields of shelled peas of high tenderometer ratings and low quality were also increased”
e1“Yields of vines, however, were increased consistently by N fertilization”
t0“peas”
Claim · model-written summary
Lime tended to delay pea maturity on a common harvest date.
- Taxon
- peasLathyrus oleraceuse0
- Treatment
- limee0
- Outcome
- maturitye0
- Direction
- delaye0
- Qualifier
- peas harvested on the same daye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With peas harvested on the same day both lime and nitrogen tended to delay maturity, as shown by lower tenderometer ratings”
Claim · model-written summary
Nitrogen tended to delay pea maturity on a common harvest date.
- Taxon
- peasLathyrus oleraceuse0
- Treatment
- nitrogene0
- Outcome
- maturitye0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With peas harvested on the same day both lime and nitrogen tended to delay maturity, as shown by lower tenderometer ratings”
Claim · model-written summary
Authors conclude lime with inoculated seed is more profitable than nitrogen fertilization on acid soils.
- Taxon
- peasLathyrus oleraceuse1
- Outcome
- application of lower costing lime with inoculated pea seede0
- Comparator
- higher costing nitrogen fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of lower costing lime with inoculated pea seed is more profitable than higher costing nitrogen fertilization”
e1“peas grown on acid soils”
Claim · model-written summary
Authors advise nitrogen mainly to delay maturity for harvest scheduling.
- Taxon
- peasLathyrus oleraceust0
- Outcome
- Application of nitrogen can usually be justified only to delay maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of nitrogen can usually be justified only to delay maturity of part or all of the crop to facilitate harvesting a high quality pack”
t0“peas”
Claim · model-written summary
Authors recommend P and K fertilizers only as insurance on low-testing soils.
- Taxon
- peasLathyrus oleraceust0
- Outcome
- Application of P and K fertilizers is recommended only as insurancee0
- Qualifier
- soils testing low in these nutrientse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of P and K fertilizers is recommended only as insurance on soils testing low in these nutrients”
t0“peas”
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7 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- no effect
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See all 10 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.