Abstract
The stocking level and hence the productive capacity of pastures in the nonirrigable, semiarid region of Puerto Rico is limited by the pasturage available during the approximately 5-month dry season of December to April. This, in turn, largely depends on the quantity and quality of the roughage carried over in the field from the wet season when an excess of forage is produced. The application of 100 pounds of nitrogen per acre to a closely grazed Guinea grass pasture toward the end of the wet season, November 1, resulted in a marked increase in the dry matter from 3,555 to 5,520 pounds per acre of protein yields from 238 to 486 pounds per acre, and in the protein content from 6.7 to 8.8 percent, of the forage carried over in the field for grazing toward the end of the dry season. Total yields of dry forage produced during the year following application of the fertilizer were increased from 9,710 to 12,645 pounds per acre. Total yields of protein were also increased by this treatment from 608 to 921 pounds per acre. About 50 percent of the nitrogen applied was recovered in the forage. Heavier applications of nitrogen tended to increase protein yields and also the protein content of the forage, but did not affect yields of dry matter. Through good management and proper fertilization with nitrogen it appears possible markedly to increase the carrying capacity of Guinea grass pastures in this area.
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Claims 10
Claim · model-written summary
Nitrogen fertilizer increased Guinea grass forage dry matter from 3,555 to 5,520 pounds per acre.
- Taxon
- Guinea grass
.jpg?width=60)
Megathyrsus maximuse0 - Treatment
- 100 pounds of nitrogen per acree0
- Outcome
- dry mattere0
- Direction
- increasee0
- Value
- 3,555 to 5,520 pounds per acree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The application of 100 pounds of nitrogen per acre to a closely grazed Guinea grass pasture toward the end of the wet season, November 1, resulted in a marked increase in the dry matter from 3,555 to 5,520 pounds per acre of protein yields from 238 to 486 pounds per acre, and in the protein content from 6.7 to 8.8 percent, of the forage carried over in the field for grazing toward the end of the dry season.”
Claim · model-written summary
Nitrogen fertilizer increased Guinea grass forage protein yields from 238 to 486 pounds per acre.
- Taxon
- Guinea grassMegathyrsus maximuse0
- Treatment
- 100 pounds of nitrogen per acree0
- Outcome
- protein yieldse0
- Direction
- increasee0
- Value
- 238 to 486 pounds per acree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of 100 pounds of nitrogen per acre to a closely grazed Guinea grass pasture toward the end of the wet season, November 1, resulted in a marked increase in the dry matter from 3,555 to 5,520 pounds per acre of protein yields from 238 to 486 pounds per acre, and in the protein content from 6.7 to 8.8 percent, of the forage carried over in the field for grazing toward the end of the dry season.”
Claim · model-written summary
Nitrogen fertilizer increased Guinea grass forage protein content from 6.7 to 8.8 percent.
- Taxon
- Guinea grassMegathyrsus maximuse0
- Treatment
- 100 pounds of nitrogen per acree0
- Outcome
- protein contente0
- Direction
- increasee0
- Value
- 6.7 to 8.8 percente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of 100 pounds of nitrogen per acre to a closely grazed Guinea grass pasture toward the end of the wet season, November 1, resulted in a marked increase in the dry matter from 3,555 to 5,520 pounds per acre of protein yields from 238 to 486 pounds per acre, and in the protein content from 6.7 to 8.8 percent, of the forage carried over in the field for grazing toward the end of the dry season.”
Claim · model-written summary
Fertilizer increased Total yields of dry forage from 9,710 to 12,645 pounds per acre.
- Taxon
- Guinea GrassMegathyrsus maximust0
- Treatment
- fertilizere0
- Outcome
- Total yields of dry foragee0
- Direction
- increasede0
- Value
- 9,710 to 12,645 pounds per acree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“Total yields of dry forage produced during the year following application of the fertilizer were increased from 9,710 to 12,645 pounds per acre.”
Claim · model-written summary
Fertilizer increased Total yields of protein from 608 to 921 pounds per acre.
- Taxon
- Guinea GrassMegathyrsus maximust0
- Treatment
- this treatmente0
- Outcome
- Total yields of proteine0
- Direction
- increasede0
- Value
- 608 to 921 pounds per acree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“Total yields of protein were also increased by this treatment from 608 to 921 pounds per acre.”
Claim · model-written summary
About half the applied nitrogen was recovered in forage.
- Taxon
- Guinea GrassMegathyrsus maximust0
- Outcome
- nitrogen applied was recovered in the foragee0
- Value
- 50 percente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“About 50 percent of the nitrogen applied was recovered in the forage.”
Claim · model-written summary
Heavier nitrogen applications increased protein yields.
- Taxon
- Guinea GrassMegathyrsus maximust0
- Treatment
- Heavier applications of nitrogene0
- Outcome
- protein yieldse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“Heavier applications of nitrogen tended to increase protein yields and also the protein content of the forage, but did not affect yields of dry matter.”
Claim · model-written summary
Heavier nitrogen applications increased protein content.
- Taxon
- Guinea GrassMegathyrsus maximust0
- Treatment
- Heavier applications of nitrogene0
- Outcome
- protein contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“Heavier applications of nitrogen tended to increase protein yields and also the protein content of the forage, but did not affect yields of dry matter.”
Claim · model-written summary
Heavier nitrogen applications did not affect yields of dry matter.
- Taxon
- Guinea GrassMegathyrsus maximust0
- Treatment
- Heavier applications of nitrogene0
- Outcome
- yields of dry mattere0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“Heavier applications of nitrogen tended to increase protein yields and also the protein content of the forage, but did not affect yields of dry matter.”
Claim · model-written summary
Proper management and nitrogen fertilization could raise Guinea grass pasture carrying capacity.
- Taxon
- Guinea grassMegathyrsus maximuse0
- Outcome
- increase the carrying capacity of Guinea grass pasturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Guinea Grass”
e0“Through good management and proper fertilization with nitrogen it appears possible markedly to increase the carrying capacity of Guinea grass pastures in this area.”
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See all 40 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.