Abstract
Long term crop cultivation affects the soil indigenous nutrient supply which is the basis of sustainable nutrient management. The field experiment was conducted during 2015-2019 to study the effects of nutrient omission on rice yield and soil inherent nutrient supply capacity in a rice -fallow- rice cropping system under wetland condition. The experiment received seven treatments [Control, recommended dose of NPKSZn fertilizer, (-N)PKSZn, N(-P)KSZn, NP(-K)SZn, NPK(-S)Zn and NPKS(-Zn)] in a randomized complete block design with three replications. The highest yield reduction was found with the omission of N in each rice crop illustrating that N was the most deficient nutrient in the soil. After three cropping years, omission of P and K significantly reduced the rice grain yield indicating that although initially the soil could supply these nutrients, they should be added to soil for continuous rice cultivation. However, no significant yield reduction was observed due to Zn omission, while the results of S omission was inconsistent. The contribution of soil to rice yield varied with crop growing seasons and was higher in Aman season (67%) compared to Boro season (43%). The recommended fertilizer dose sustained the rice yield during the study period. However, after five years of rice cropping soil available P and K content reduced from its initial content even in the recommended fertilizer treatment. Therefore, our study suggests that in long term crop cultivation the fertilizer dose should be updated regularly to maintain sustainable yield and soil health.
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Claims 10
Claim · model-written summary
Omitting nitrogen produced the largest rice yield reduction.
- Taxon
- rice
Oryza sativae0 - Treatment
- omission of Ne0
- Outcome
- rice crope0
- Direction
- highest yield reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest yield reduction was found with the omission of N in each rice crop”
Claim · model-written summary
After three cropping years, phosphorus omission significantly reduced rice grain yield.
- Taxon
- riceOryza sativae0
- Treatment
- omission of Pe0
- Outcome
- rice grain yielde0
- Direction
- reducede0
- Qualifier
- After three cropping yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After three cropping years, omission of P and K significantly reduced the rice grain yield”
Claim · model-written summary
After three cropping years, potassium omission significantly reduced rice grain yield.
- Taxon
- riceOryza sativae0
- Treatment
- Ke0
- Outcome
- rice grain yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After three cropping years, omission of P and K significantly reduced the rice grain yield”
Claim · model-written summary
Zinc omission did not significantly reduce rice yield.
- Taxon
- riceOryza sativat0
- Treatment
- Zn omissione0
- Outcome
- yield reductione0
- Direction
- no significant yield reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant yield reduction was observed due to Zn omission”
t0“nutrient omission on rice yield”
Claim · model-written summary
The effect of sulfur omission was inconsistent.
- Taxon
- riceOryza sativat0
- Treatment
- S omissione0
- Outcome
- resultse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the results of S omission was inconsistent”
t0“nutrient omission on rice yield”
Claim · model-written summary
The soil contribution to rice yield was 67% in Aman season, higher than in Boro season.
- Taxon
- riceOryza sativae0
- Outcome
- contribution of soil to rice yielde0
- Direction
- highere0
- Value
- 67%e0
- Qualifier
- 43%e0
- Comparator
- Boro seasone0
- Setting
- Aman seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“contribution of soil to rice yield varied with crop growing seasons and was higher in Aman season (67%) compared to Boro season (43%)”
Claim · model-written summary
The recommended fertilizer dose sustained rice yield during the study.
- Taxon
- riceOryza sativae0
- Treatment
- recommended fertilizer dosee0
- Outcome
- rice yielde0
- Direction
- sustainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The recommended fertilizer dose sustained the rice yield during the study period”
Claim · model-written summary
Soil available phosphorus content declined after five years even under recommended fertilization.
- Taxon
- riceOryza sativae0
- Treatment
- recommended fertilizer treatmente0
- Outcome
- soil available Pe0
- Direction
- reducede0
- Comparator
- initial contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after five years of rice cropping soil available P and K content reduced from its initial content even in the recommended fertilizer treatment”
Claim · model-written summary
Soil available potassium content declined after five years even under recommended fertilization.
- Taxon
- riceOryza sativae0
- Outcome
- K contente0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after five years of rice cropping soil available P and K content reduced from its initial content even in the recommended fertilizer treatment”
Claim · model-written summary
The authors recommend regularly updating fertilizer doses in long term rice cropping.
- Taxon
- riceOryza sativat0
- Outcome
- fertilizer dose should be updated regularlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in long term crop cultivation the fertilizer dose should be updated regularly to maintain sustainable yield and soil health”
t0“nutrient omission on rice yield”
The same questions in other papers
zinc atom · yield · Oryza sativa (rice)Results differ
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This paper is about lacking the nutrient, so it counts the other way round here.
- positive
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See all 383 papers →fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- negative
- positive
- positive
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See all 3,455 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.