Abstract
Background: Increasing cost of fertilizers warrants the necessity of finding methods for increasing the use efficiency of nitrogen in a cropping system. Data from on-farm research on evaluation of use efficiency of applied nutrients using check plot or omission plot technique has been lacking. Methods: A researcher designed and farmer managed experiment was conducted in Angul district under Mid Central Table Land Zone of Odisha to study the on-farm crop response to plant nutrients by involving 12 farmers during 2015-16 and another 12 farmers during 2016-17 in rice (Oryza sativa L.)- groundnut (Arachis hypogaea L.) cropping system with seven treatments, viz. control (no fertilizer application), recommended N alone (N-0-0-0), NP (N-P-0-0), NK (N-0-K-0), NPK (N-P-K-0), NPK+ZnSO4/CaSO4 (N-P-K- ZnSO4 in rice and N-P-K- CaSO4 in groundnut) and farmers’ practice (FP). Result: The highest system rice equivalent yield (REY) (12.63 t/ha) was recorded with the recommended doses of nitrogen, phosphorus and potassium (N-P-K @ 80, 17.5 and 33 kg/ha)+25 kg ZnSO4/ha to rice and recommended doses of nitrogen, phosphorus and potassium (N-P-K @ 40, 17.5 and 33 kg/ha)+250 kg CaSO4/ha to groundnut followed by recommended NPK alone to both the crops without ZnSO4/CaSO4 (12.18 t/ha). Partial factor productivity (PFP) of N in rice-groundnut system can be increased to 42% over sole N application through application of recommended quantity of NPK. The agronomic efficiency (AE) of N increased by 122, 87 and 186% in rice groundnut cropping system by applying recommended doses of N with P, K and PK over N alone, respectively. Application of recommended quantity of NPK+ZnSO4 to rice and NPK+CaSO4 to succeeding groundnut crop recorded highest system net return of Rs. 92690/ha followed by application of recommended NPK only to both the crops (Rs.89950/ha). Application of balanced fertilizer improved the status of organic carbon and available N, P and K at the end of the cropping season in both the years compared to control.
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Claims 7
Claim · model-written summary
Balanced NPK with zinc sulfate in rice and calcium sulfate in groundnut produced the highest system rice equivalent yield, 12.63 t/ha.
- Taxon
- rice
Oryza sativae0 - Treatment
- recommended doses of nitrogen, phosphorus and potassium (N-P-K @ 80, 17.5 and 33 kg/ha)+25 kg ZnSO4/ha to rice and recommended doses of nitrogen, phosphorus and potassium (N-P-K @ 40, 17.5 and 33 kg/ha)+250 kg CaSO4/ha to groundnute0
- Outcome
- system rice equivalent yield (REY)e0
- Direction
- higheste0
- Value
- 12.63 t/hae0
- Qualifier
- 12.18 t/hae0
- Comparator
- recommended NPK alone to both the crops without ZnSO4/CaSO4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest system rice equivalent yield (REY) (12.63 t/ha) was recorded with the recommended doses of nitrogen, phosphorus and potassium (N-P-K @ 80, 17.5 and 33 kg/ha)+25 kg ZnSO4/ha to rice and recommended doses of nitrogen, phosphorus and potassium (N-P-K @ 40, 17.5 and 33 kg/ha)+250 kg CaSO4/ha to groundnut followed by recommended NPK alone to both the crops without ZnSO4/CaSO4 (12.18 t/ha).”
Claim · model-written summary
Recommended NPK increased nitrogen partial factor productivity by 42% over sole nitrogen.
Verbatim
e0“Partial factor productivity (PFP) of N in rice-groundnut system can be increased to 42% over sole N application through application of recommended quantity of NPK.”
Claim · model-written summary
Nitrogen plus phosphorus increased nitrogen agronomic efficiency by 122% against nitrogen alone.
Verbatim
e0“The agronomic efficiency (AE) of N increased by 122, 87 and 186% in rice groundnut cropping system by applying recommended doses of N with P, K and PK over N alone, respectively.”
Claim · model-written summary
Nitrogen plus potassium increased nitrogen agronomic efficiency by 87% against nitrogen alone.
Verbatim
e0“The agronomic efficiency (AE) of N increased by 122, 87 and 186% in rice groundnut cropping system by applying recommended doses of N with P, K and PK over N alone, respectively.”
Claim · model-written summary
Nitrogen plus phosphorus and potassium increased nitrogen agronomic efficiency by 186% against nitrogen alone.
Verbatim
e0“The agronomic efficiency (AE) of N increased by 122, 87 and 186% in rice groundnut cropping system by applying recommended doses of N with P, K and PK over N alone, respectively.”
Claim · model-written summary
Balanced NPK plus zinc and calcium sulfate produced the highest system net return, Rs. 92690/ha, followed by NPK alone at Rs.89950/ha.
- Taxon
- riceOryza sativae0
- Treatment
- NPK+ZnSO4 to rice and NPK+CaSO4 to succeeding groundnut crope0
- Outcome
- system net returne0
- Direction
- higheste0
- Value
- Rs. 92690/hae0
- Qualifier
- Rs.89950/hae0
- Comparator
- recommended NPK only to both the cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of recommended quantity of NPK+ZnSO4 to rice and NPK+CaSO4 to succeeding groundnut crop recorded highest system net return of Rs. 92690/ha followed by application of recommended NPK only to both the crops (Rs.89950/ha).”
Claim · model-written summary
Balanced fertilizer improved soil organic carbon and available nitrogen, phosphorus, and potassium against control.
- Treatment
- balanced fertilizere0
- Outcome
- status of organic carbon and available N, P and Ke0
- Direction
- improvede0
- Qualifier
- at the end of the cropping season in both the yearse0
- Comparator
- controle0
Not reportedTaxon
Verbatim
e0“Application of balanced fertilizer improved the status of organic carbon and available N, P and K at the end of the cropping season in both the years compared to control.”
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