Abstract
The present field study was conducted on loamy sand soil at the Research Farm, Department of Soil Science, Punjab Agricultural University, Ludhiana, India under a rice–wheat cropping system to study the influence of long-term integrated nutrient management (INM) involving chemical fertilizers and organic amendments viz. farmyard manure (FYM), green manure (GM), and straw incorporation (SI) on the availability of micronutrients (Zn, Fe, Mn and Cu), yield and uptake of nutrients by crop in rice–wheat system. The experiment comprised 9 treatment combinations comprising control, 50% RDF (Recommended dose of fertilizer)+FYM, 50% RDF + GM, 100% RDF, 100% RDF (P to wheat), 100% RDF + FYM, 100% RDF + GM, 100% RDF + SI and 150% RDF. Results revealed that continuous use of chemical fertilizers along with organic amendments in rice–wheat cropping system (RWCS) for 19 years has resulted to an increase in the availability of micronutrient cations (Zn, Fe, Mn and Cu). Build-up of soil organic carbon and decrease in soil pH has resulted in the increase of bio-available forms of micronutrients. The transfer coefficient (TC) value did not vary significantly among the treatments except for Cu in both rice and wheat crop. Low soil recovery coefficient (SRC) values of Zn, Cu, Fe, and Mn indicated that long-term INM can meet their plant nutritional requirement in rice–wheat cropping system. This study concludes that long-term integration of FYM with NPK fertilizers has an edge over GM and SI in regulating the supply of micronutrients in soil–plant system and correcting the micronutrients deficiencies in rice–wheat cropping system.
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Claims 5
Claim · model-written summary
Continuous use of chemical fertilizers with organic amendments in a rice-wheat system for 19 years increased the availability of the micronutrient cations Zn, Fe, Mn and Cu.
- Taxon
- rice–wheat
Oryza sativa
Triticum aestivume1 - Treatment
- chemical fertilizers along with organic amendmentse1
- Outcome
- availability of micronutrient cations (Zn, Fe, Mn and Cu)e1
- Direction
- increasee1
- Qualifier
- for 19 yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“continuous use of chemical fertilizers along with organic amendments in rice–wheat cropping system (RWCS) for 19 years has resulted to an increase in the availability of micronutrient cations (Zn, Fe, Mn and Cu)”
Claim · model-written summary
Build-up of soil organic carbon and decrease in soil pH resulted in increased bio-available forms of micronutrients.
- Taxon
- rice–wheat
Oryza sativa
Triticum aestivumt0 - Outcome
- bio-available forms of micronutrientse1
- Qualifier
- Build-up of soil organic carbon and decrease in soil pHe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“rice–wheat cropping”
e1“Build-up of soil organic carbon and decrease in soil pH has resulted in the increase of bio-available forms of micronutrients”
Claim · model-written summary
The transfer coefficient did not vary significantly among treatments except for Cu in both rice and wheat.
- Taxon
- rice and wheat
Oryza sativa
Triticum aestivume1 - Outcome
- transfer coefficient (TC) valuee1
- Qualifier
- except for Cue1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“The transfer coefficient (TC) value did not vary significantly among the treatments except for Cu in both rice and wheat crop”
Claim · model-written summary
Low soil recovery coefficient values of Zn, Cu, Fe and Mn indicated that long-term INM can meet the plant nutritional requirement in the rice-wheat system.
- Taxon
- rice–wheat
Oryza sativa
Triticum aestivume1 - Outcome
- Low soil recovery coefficient (SRC) values of Zn, Cu, Fe, and Mne1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“Low soil recovery coefficient (SRC) values of Zn, Cu, Fe, and Mn indicated that long-term INM can meet their plant nutritional requirement in rice–wheat cropping system”
Claim · model-written summary
Long-term integration of FYM with NPK fertilizers had an edge over green manure and straw incorporation in regulating the supply of micronutrients in the soil-plant system of rice-wheat.
- Taxon
- rice–wheat
Oryza sativa
Triticum aestivume1 - Treatment
- integration of FYM with NPK fertilizerse1
- Outcome
- regulating the supply of micronutrientse1
- Direction
- has an edge overe1
- Comparator
- GM and SIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“long-term integration of FYM with NPK fertilizers has an edge over GM and SI in regulating the supply of micronutrients in soil–plant system and correcting the micronutrients deficiencies in rice–wheat cropping system”
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