Abstract
Herbaceous grafting can be used to manage numerous soilborne pathogens in cucurbits. Rootstocks have been reported to increase the growth of the scion possibly due to more efficient use of nitrogen compared with non-grafted plants. The first objective of this study was to determine if the commercial rootstocks ‘Strongtosa’, ‘Carnivor’, or ‘Macis’ improve growth and production of the watermelon ‘Melody’ scion. The second objective was to determine whether these rootstocks have different nitrogen requirements in open-field production compared with non-grafted ‘Melody’. Field studies were conducted in 2013 and 2014 on the Sandhills Research Station in Jackson Springs, North Carolina. Nitrogen fertiliser was applied via drip irrigation at 0, 84, 126, 168, and 252 kg⋅ha−1. A linear relationship between nitrogen rate and rootstock cultivar existed; however, in all cases the non-grafted plants produced more than all grafted plants. Average fruit weight from the non-grafted plants was also higher than the grafted plants. Fruit from ‘Carnivor’- and ‘Strongtosa’-grafted plants had higher flesh firmness compared with non-grafted ‘Melody’. Our findings suggest that rootstocks do not increase yield or growth in the scion nor do they require different nitrogen application rates. However, some rootstocks do improve overall fruit quality.
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Claims 7
Claim · model-written summary
Non-grafted watermelon plants produced more yield than all grafted plants.
- Taxon
- watermelon
Citrullus lanatust0 - Material
- non-grafted plantse1
- Outcome
- yielde2
- Direction
- moree1
- Comparator
- all grafted plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e1“in all cases the non-grafted plants produced more than all grafted plants”
e2“rootstocks do not increase yield or growth in the scion”
Claim · model-written summary
Average fruit weight was higher in non-grafted watermelon plants than in grafted plants.
- Taxon
- watermelonCitrullus lanatust0
- Material
- non-grafted plantse3
- Outcome
- Average fruit weighte3
- Direction
- highere3
- Comparator
- grafted plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e3“Average fruit weight from the non-grafted plants was also higher than the grafted plants”
Claim · model-written summary
Fruit from ‘Carnivor’-grafted watermelon plants had higher flesh firmness than non-grafted ‘Melody’.
- Taxon
- watermelonCitrullus lanatust0
- Material
- ‘Carnivor’e4
- Outcome
- flesh firmnesse4
- Direction
- highere4
- Comparator
- non-grafted ‘Melody’e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e4“Fruit from ‘Carnivor’- and ‘Strongtosa’-grafted plants had higher flesh firmness compared with non-grafted ‘Melody’”
Claim · model-written summary
Fruit from ‘Strongtosa’-grafted watermelon plants had higher flesh firmness than non-grafted ‘Melody’.
- Taxon
- watermelonCitrullus lanatust0
- Material
- ‘Strongtosa’e4
- Outcome
- flesh firmnesse4
- Direction
- highere4
- Comparator
- non-grafted ‘Melody’e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e4“Fruit from ‘Carnivor’- and ‘Strongtosa’-grafted plants had higher flesh firmness compared with non-grafted ‘Melody’”
Claim · model-written summary
A linear relationship existed between nitrogen rate and rootstock cultivar in watermelon.
- Taxon
- watermelonCitrullus lanatust0
- Outcome
- linear relationship between nitrogen rate and rootstock cultivare5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e5“A linear relationship between nitrogen rate and rootstock cultivar existed”
Claim · model-written summary
Rootstocks did not increase yield or growth of the watermelon scion.
- Taxon
- watermelonCitrullus lanatust0
- Treatment
- rootstockse2
- Outcome
- yield or growth in the scione2
- Direction
- do not increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e2“rootstocks do not increase yield or growth in the scion”
Claim · model-written summary
Rootstocks did not require different nitrogen application rates in watermelon.
- Taxon
- watermelonCitrullus lanatust0
- Outcome
- nitrogen application ratese6
- Qualifier
- they require different nitrogen application ratese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“in watermelon”
e6“rootstocks do not increase yield or growth in the scion nor do they require different nitrogen application rates”
The same questions in other papers
grafting · yield · Citrullus lanatus (watermelon)Results differ
6 papers in the same direction as this paper · 59 in the opposite direction
- positive
- positive
- positive
62 papers more in this group
See all 66 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.