Abstract
Aims: The aim of this study was to evaluate the best crop succession strategy and nitrogen dose for irrigated watermelon cultivation in the cerrado of Roraima. Experimental Design: The experimental design was a randomized complete block design, arranged in a split-plot scheme, with four replications. Place and Duration of Study: Two experiments were conducted (2014/2015 and 2015/2016 growing seasons), with the ‘Crimsom Sweet’ watermelon cultivar, grown under different N doses in succession to cover crop species, at the experimental field “Água Boa”, belonging to Embrapa Roraima, located in the municipality of Boa Vista, state of Roraima, Brazil. Methodology: The three plots consisted of cultivating watermelon in succession to: maize intercropped with pigeon pea (Cajanus cajan), Brachiaria (Urochloa ruziziensis) and control with natural vegetation. The subplots consisted of four doses of nitrogen (0, 75, 150 and 225 kg ha-1 of N) applied in the watermelon culture. The following variables were evaluated: average fruit weight, number of fruits per hectare, number of fruits per hectare with a mass between 5 and 10 kg, number of fruits per hectare with mass greater than 10 kg, productivity, soluble solids content, pH and titratable acidity. Results: The pigeon pea provided an increase in the number of fruits per hectare with mass ≥ 10 kg and in productivity. Nitrogen doses between 118 and 124 kg ha-1 produced the highest number of fruits, number of fruits with mass ≥ 10 kg and higher soluble solids content. Conclusion: Fruit quality was influenced by the year of cultivation, predecessor cover crop species and the N doses. Pigeon pea and U. ruziziensis favor the availability of nitrogen in the soil for the following crop in succession.
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Claims 6
Claim · model-written summary
Pigeon pea as the preceding crop increased watermelon productivity compared with the control with natural vegetation.
- Taxon
- watermelon
Citrullus lanatuse0 - Treatment
- pigeon peae2
- Outcome
- productivitye2
- Direction
- increasee2
- Comparator
- control with natural vegetatione1
- Setting
- cerrado of Roraimae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated watermelon cultivation in the cerrado of Roraima”
e1“control with natural vegetation”
e2“The pigeon pea provided an increase in the number of fruits per hectare with mass ≥ 10 kg and in productivity”
Claim · model-written summary
Pigeon pea as the preceding crop increased the number of watermelon fruits per hectare with mass of 10 kg or more compared with the control with natural vegetation.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- pigeon peae2
- Outcome
- number of fruits per hectare with mass ≥ 10 kge2
- Direction
- increasee2
- Comparator
- control with natural vegetatione1
- Setting
- cerrado of Roraimae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated watermelon cultivation in the cerrado of Roraima”
e1“control with natural vegetation”
e2“The pigeon pea provided an increase in the number of fruits per hectare with mass ≥ 10 kg and in productivity”
Claim · model-written summary
Nitrogen doses between 118 and 124 kg ha-1 produced the highest number of watermelon fruits, including fruits with mass of 10 kg or more, compared with the other N doses.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- Nitrogen doses between 118 and 124 kg ha-1e3
- Outcome
- number of fruitse3
- Direction
- higheste3
- Comparator
- 0, 75, 150 and 225 kg ha-1e4
- Setting
- cerrado of Roraimae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated watermelon cultivation in the cerrado of Roraima”
e3“Nitrogen doses between 118 and 124 kg ha-1 produced the highest number of fruits, number of fruits with mass ≥ 10 kg and higher soluble solids content”
e4“The subplots consisted of four doses of nitrogen (0, 75, 150 and 225 kg ha-1 of N) applied in the watermelon culture”
Claim · model-written summary
Nitrogen doses between 118 and 124 kg ha-1 gave watermelon fruits with higher soluble solids content compared with the other N doses.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- Nitrogen doses between 118 and 124 kg ha-1e3
- Outcome
- soluble solids contente3
- Direction
- highere3
- Comparator
- 0, 75, 150 and 225 kg ha-1e4
- Setting
- cerrado of Roraimae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated watermelon cultivation in the cerrado of Roraima”
e3“Nitrogen doses between 118 and 124 kg ha-1 produced the highest number of fruits, number of fruits with mass ≥ 10 kg and higher soluble solids content”
e4“The subplots consisted of four doses of nitrogen (0, 75, 150 and 225 kg ha-1 of N) applied in the watermelon culture”
Claim · model-written summary
Pigeon pea and Brachiaria favor the availability of nitrogen in the soil for the following crop in succession.
- Taxon
- WatermelonCitrullus lanatust0
- Treatment
- Pigeon pea and U. ruziziensise5
- Outcome
- availability of nitrogen in the soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Watermelon Culture”
e5“Pigeon pea and U. ruziziensis favor the availability of nitrogen in the soil for the following crop in succession”
Claim · model-written summary
Fruit quality of watermelon was influenced by the year of cultivation, the predecessor cover crop species and the N doses.
- Taxon
- watermelonCitrullus lanatuse0
- Treatment
- the year of cultivation, predecessor cover crop species and the N dosese6
- Outcome
- Fruit qualitye6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigated watermelon cultivation in the cerrado of Roraima”
e6“Fruit quality was influenced by the year of cultivation, predecessor cover crop species and the N doses”
The same questions in other papers
nitrogen · quality: sugar starch · Citrullus lanatus (watermelon)Positive and negative results
1 in the opposite direction
- no effect
nitrogen · yield · Citrullus lanatus (watermelon)Positive and negative results
17 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- negative
- no effect
19 papers more in this group
See all 23 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.