Abstract
ABSTRACT The objective of this research was to evaluate the growth and formation of fresh and dry weight of ‘Crioula’ guava rootstock irrigated with waters of different saline levels and nitrogen (N) doses, in an experiment conducted in plastic tubes under greenhouse conditions. The experimental design was randomized blocks, in a 5 x 4 factorial scheme with four replicates, and the treatments consisted of five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and four N doses (70, 100, 130 and 160% of the N dose recommended for the cultivation of guava seedlings, cv. ‘Paluma’). The dose referring to 100% corresponds to 773 mg of N dm-3. The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil; increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock; irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings.
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Claims 3
Claim · model-written summary
Maximum Crioula rootstock growth occurred at 0.3 dS m-1 and 541.1 mg N dm-3.
- Taxon
- guava
Psidium guajavae0 - Material
- ‘Crioula’e0
- Treatment
- ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soile0
- Outcome
- growthe0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest growth of ‘Crioula’ guava rootstock was obtained with ECw of 0.3 dS m-1 and fertilization of 541.1 mg N dm-3 of soil”
Claim · model-written summary
More nitrogen did not reduce salt damage to rootstock growth and phytomass.
- Taxon
- guavaPsidium guajavae0
- Material
- ‘Crioula’e0
- Treatment
- increasing N dosese0
- Outcome
- growth and phytomass formatione0
- Direction
- did not reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing N doses did not reduce the deleterious effect of the salt stress on the growth and phytomass formation of ‘Crioula’ guava rootstock”
Claim · model-written summary
Irrigation water up to 1.75 dS m-1 caused an acceptable 10% reduction in seedling growth and quality.
- Taxon
- guavaPsidium guajavae0
- Treatment
- irrigation with water of up to 1.75 dS m-1e0
- Outcome
- growth and quality of the seedlingse0
- Direction
- reductione0
- Value
- 10%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation with water of up to 1.75 dS m-1, in the production of guava rootstocks, promotes acceptable reduction of 10% in growth and quality of the seedlings”
The same questions in other papers
nitrogen · growth · Psidium guajava (guava)Positive and negative results
2 papers in the same direction as this paper · 20 in the opposite direction
- positive
- no effect
- positive
19 papers more in this group
See all 23 papers →irrigation · quality: general · Psidium guajava (guava)Results agree
1 paper in the same direction as this paper
- negative
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.