Abstract
The study was conducted in Juan Guerra district, province and region of San Martin, Peru; it assessed two treatment sets: (1) nitrogen fertilizer dose (FN75, FN100); (2) green manure Crotalaria juncea (CroJ), Canavalia ensiformis (CanE), and without green manure. It was arranged in a split-plot design with four replications. During the experiment, we observed an important fluctuation in soil parameters. Notably, there was a decrease in soil carbon and nitrogen levels, likely attributed to microorganism metabolism. On the other hand, we observed that CanE significantly reduced the diseased tillers through “White Leaf Virus” (RHBV) by 2.82% compared to the control, and significant panicle fertility was achieved by CroJ (91.88%). No significant differences were obtained in yields during this first campaign; however, the highest reported yield was 8.36 t ha-1 with the CanE - FN100 treatment. Additionally, the nutritional quality of the rice was not affected by either green manuring or the application of chemical nitrogen fertilization. These findings allow deeper studies to consider strategic alternatives to reducing dependency on inorganic fertilizers among the poorest communities. Highlights: A reduced incidence of White Leaf Virus (RHBV) was observed with the use of green manures. Rice variety INIA 507 "La Conquista'' reached 8.36 t ha-1 under tropical climate conditions. Canavalia ensiformis accompanied by nitrogen fertilization produced the highest yield. Replacing 25% of chemical nitrogen fertilization with Canavalia or Crotalaria green manures did not significantly affect rice yield. Replacing chemical nitrogen fertilization with green manure did not affect the nutritional quality of rice.
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Claims 7
Claim · model-written summary
Soil carbon and nitrogen levels decreased during the experiment, likely through microorganism metabolism.
- Taxon
- rice
Oryza sativat0 - Outcome
- soil carbon and nitrogen levelse7
- Direction
- decreasee7
- Qualifier
- likely attributed to microorganism metabolisme7
- Setting
- Juan Guerra district, province and region of San Martin, Perue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e0“The study was conducted in Juan Guerra district, province and region of San Martin, Peru”
e7“Notably, there was a decrease in soil carbon and nitrogen levels, likely attributed to microorganism metabolism”
Claim · model-written summary
Canavalia ensiformis (CanE) green manure reduced diseased tillers from White Leaf Virus by 2.82% compared with the control.
- Taxon
- riceOryza sativat0
- Treatment
- Canavalia ensiformis (CanE)e1
- Interactor
- White Leaf Viruse2pathogen
- Outcome
- diseased tillerse2
- Direction
- reducede2
- Value
- 2.82%e2
- Comparator
- controle2
- Setting
- Juan Guerra district, province and region of San Martin, Perue0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e0“The study was conducted in Juan Guerra district, province and region of San Martin, Peru”
e1“green manure Crotalaria juncea (CroJ), Canavalia ensiformis (CanE), and without green manure”
e2“CanE significantly reduced the diseased tillers through “White Leaf Virus” (RHBV) by 2.82% compared to the control”
Claim · model-written summary
Crotalaria juncea (CroJ) green manure gave significantly higher panicle fertility (91.88%).
- Taxon
- riceOryza sativat0
- Treatment
- Crotalaria juncea (CroJ)e1
- Outcome
- panicle fertilitye3
- Direction
- higherinferrede3
- Value
- 91.88%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e1“green manure Crotalaria juncea (CroJ), Canavalia ensiformis (CanE), and without green manure”
e3“significant panicle fertility was achieved by CroJ (91.88%)”
Claim · model-written summary
No significant differences in rice yield were found during the first campaign.
- Taxon
- riceOryza sativat0
- Outcome
- yieldse4
- Direction
- no_changeinferrede4
- Qualifier
- first campaigne4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e4“No significant differences were obtained in yields during this first campaign”
Claim · model-written summary
The highest reported rice yield was 8.36 t ha-1 with the CanE - FN100 treatment, in the INIA 507 variety.
- Taxon
- riceOryza sativat0
- Material
- INIA 507e6
- Treatment
- CanE - FN100e5
- Outcome
- yielde5
- Direction
- higheste5
- Value
- 8.36 t ha-1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e5“the highest reported yield was 8.36 t ha-1 with the CanE - FN100 treatment”
e6“Rice variety INIA 507”
Claim · model-written summary
Green manuring or chemical nitrogen fertilization did not affect the nutritional quality of rice.
- Taxon
- riceOryza sativat0
- Treatment
- green manuring or the application of chemical nitrogen fertilizatione6
- Outcome
- nutritional quality of the ricee6
- Direction
- no_changeinferrede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e6“the nutritional quality of the rice was not affected by either green manuring or the application of chemical nitrogen fertilization”
Claim · model-written summary
Replacing 25% of chemical nitrogen fertilization with Canavalia or Crotalaria green manures did not significantly affect rice yield.
- Taxon
- riceOryza sativat0
- Treatment
- Replacing 25% of chemical nitrogen fertilization with Canavalia or Crotalaria green manurese7
- Outcome
- rice yielde7
- Direction
- no_changeinferrede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Green manuring and fertilization on rice”
e7“Replacing 25% of chemical nitrogen fertilization with Canavalia or Crotalaria green manures did not significantly affect rice yield”
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