Abstract
The use of bacterial inoculants is an attractive alternative that could reduce the consumption of chemical fertilizers in crops. In the production system of quality coffee seedlings, it is essential to achieve an adequate balance of nutrients that allows for healthy plants that are resistant to subsequent handling. The objective of this work was to evaluate the effect of Rhizobium sp. inoculation on the growth, nutrition and quality of coffee seedlings cultivated with different doses of phosphoric fertilization. Inoculation tests were carried out under nursery conditions using Coffea arabica L. cv. “Isla 5–15” and Coffea canephora Pierre ex Froehner cv. “Robusta” seeds inoculated with the Rhizobium sp. Rpr2 strain. Sixty days after sowing, the hypocotyldonal graft was performed, and the resulting plants were also treated with the bacterial inoculant. Plants were then planted in substrate with different doses of phosphorus (P): 25, 50, 75 and 100%. At seven months of cultivation, variables of growth (plant height, stem diameter, number of leaf pairs, main root length, root volume, dry mass of the aerial part, root and total), phosphoric nutrition (leaf and root P contents) and posture quality index were evaluated. The inoculation stimulated the aerial part (37%), root growth (34%), the quality index of the grafted postures (30%), and phosphorus absorption (42%) and allowed a decrease from 25 to 75% of the mineral fertilizer. For the first time in Cuba, the benefits of rhizobial inoculation on the nutrition and quality of coffee seedlings were demonstrated. The inoculation of grafted coffee seedlings with Rhizobium sp. Rpr2 through the inoculation method proposed in this study can be recommended as a new easy, cost-effective and efficient inoculation approach to obtain additional benefits for coffee growth, improving the absorption of nutritive elements and the quality characteristics of the coffee seedlings.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Rhizobium inoculation stimulated aerial growth by 37%.
- Treatment
- inoculatione0
- Interactor
- Rhizobium sp. Rpr2e2symbiont
- Outcome
- aerial parte0
- Direction
- stimulatede0
- Value
- 37%e0
CoffeaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation stimulated the aerial part (37%)”
e1“production system of quality coffee seedlings”
e2“Rhizobium sp. Rpr2 strain”
Claim · model-written summary
Rhizobium inoculation stimulated root growth by 34%.
- Treatment
- inoculatione1
- Interactor
- Rhizobium sp. Rpr2e3symbiont
- Outcome
- root growthe0
- Direction
- stimulatede1
- Value
- 34%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root growth (34%)”
e1“The inoculation stimulated the aerial part (37%), root growth (34%)”
e2“production system of quality coffee seedlings”
e3“Rhizobium sp. Rpr2 strain”
Claim · model-written summary
Rhizobium inoculation improved grafted seedling quality index by 30%.
- Treatment
- inoculatione0
- Interactor
- Rhizobium sp. Rpr2e2symbiont
- Outcome
- quality index of the grafted posturese0
- Direction
- stimulatede0
- Value
- 30%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation stimulated the aerial part (37%), root growth (34%), the quality index of the grafted postures (30%)”
e1“production system of quality coffee seedlings”
e2“Rhizobium sp. Rpr2 strain”
Claim · model-written summary
Rhizobium inoculation increased phosphorus absorption by 42%.
- Treatment
- inoculatione0
- Interactor
- Rhizobium sp. Rpr2e2symbiont
- Outcome
- phosphorus absorptione0
- Direction
- stimulatede0
- Value
- 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation stimulated the aerial part (37%), root growth (34%), the quality index of the grafted postures (30%), and phosphorus absorption (42%)”
e1“production system of quality coffee seedlings”
e2“Rhizobium sp. Rpr2 strain”
Claim · model-written summary
Rhizobium inoculation allowed mineral fertilizer reduction of 25 to 75%.
- Treatment
- inoculatione1
- Interactor
- Rhizobium sp. Rpr2e3symbiont
- Outcome
- mineral fertilizere0
- Direction
- decreasee0
- Value
- 25 to 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“allowed a decrease from 25 to 75% of the mineral fertilizer”
e1“The inoculation stimulated the aerial part”
e2“production system of quality coffee seedlings”
e3“Rhizobium sp. Rpr2 strain”
Claim · model-written summary
The authors recommend inoculating grafted coffee seedlings with Rhizobium sp. Rpr2 for growth, nutrition and quality benefits.
- Interactor
- Rhizobium sp. Rpr2e0symbiont
- Outcome
- inoculation of grafted coffee seedlings with Rhizobium sp. Rpr2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation of grafted coffee seedlings with Rhizobium sp. Rpr2 through the inoculation method proposed in this study can be recommended as a new easy, cost-effective and efficient inoculation approach to obtain additional benefits for coffee growth, improving the absorption of nutritive elements and the quality characteristics of the coffee seedlings”
The same questions in other papers
inoculation · quality: general · Coffea (coffee)Positive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
3 papers more in this group
See all 7 papers →inoculation · growth · Coffea (coffee)Positive and negative results
19 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
17 papers more in this group
See all 21 papers →inoculation · nutrient: content · Coffea (coffee)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.