Abstract
A long-term field experiment was conducted at Hayathnagar Research Farm (HRF) of ICAR-Central Research Institute of Dryland Agriculture with the objectives to assess the effect of soil management practices viz tillage, residue application and N levels on soil phosphorus fractions, their interrelationships among themselves, impact on soil P availability pool, crop yields and P uptake. The results of the study clearly indicated that the long-term use of tillage, application of residues and N levels had a significant effect on all the P fractions in soils, except that water-soluble phosphorus (WSP) was not significantly influenced by the tillage practices. The Tillage x Residue x Nitrogen (T × R × N) significantly influenced the reductant soluble phosphorus (RSP) and total phosphorus (TP); however, the remaining P fractions were not influenced significantly. Among the combination of soil management treatments, conventional tillage (CT)+ Gliricidia loppings @ 2 tha−1 (GL) + N level @ 90 kg ha−1 (N90) (CTGLN90) gave the highest sorghum grain yield (1432 kg ha−1) and P uptake (14.20 kg P ha−1). Among the treatment combinations, the order of superiority of treatments in terms of castor yield and P uptake was: CT+ sorghum stover @ 2t ha−1 (SS) + N90 (CTSSN90) (1788 kg ha−1, 11.94 kg P ha−1) > Minimum Tillage (MT) + sorghum stove @2 t ha−1 (SS) + N level @ 90 kg ha−1 (N90) (MTSSN90) (1761 kg ha−1, 14.24 kg P ha−1), respectively. Significant coefficients of multiple determination obtained from regression equations developed between sorghum crop yield and P fractions (R2 = 0.726, p = .05) and sorghum P uptake and P fractions (R2 = 0.620, p = .05) highlighted the importance of these fractions in influencing the crop yield and P uptake. Similarly, castor yield (R2 = 0.748, p = .05) and P uptake (R2 = 0.783) were significantly influenced by the P fractions. The results of the present study will be useful in understanding the effect of soil management practices on the status of P fractions and their contribution toward P uptake and crop yields.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 12
Claim · model-written summary
Long-term tillage, residue application and nitrogen levels significantly affected soil P fractions, except the tillage effect on water-soluble phosphorus.
- Treatment
- long-term use of tillage, application of residues and N levelse0
- Outcome
- P fractions in soilse0
- Qualifier
- except that water-soluble phosphorus (WSP) was not significantly influenced by the tillage practicese0
Not reportedTaxonComparatorDirection
Verbatim
e0“the long-term use of tillage, application of residues and N levels had a significant effect on all the P fractions in soils, except that water-soluble phosphorus (WSP) was not significantly influenced by the tillage practices.”
Claim · model-written summary
Tillage did not significantly influence water-soluble phosphorus.
Not reportedTaxonComparatorDirection
Verbatim
e0“water-soluble phosphorus (WSP) was not significantly influenced by the tillage practices.”
Claim · model-written summary
The tillage by residue by nitrogen interaction significantly influenced reductant-soluble and total phosphorus.
- Treatment
- Tillage x Residue x Nitrogene0
- Outcome
- reductant soluble phosphorus (RSP) and total phosphorus (TP)e0
Not reportedTaxonComparatorDirection
Verbatim
e0“The Tillage x Residue x Nitrogen (T × R × N) significantly influenced the reductant soluble phosphorus (RSP) and total phosphorus (TP)”
Claim · model-written summary
The tillage by residue by nitrogen interaction did not significantly influence remaining P fractions.
Not reportedTaxonComparatorDirection
Verbatim
e0“The Tillage x Residue x Nitrogen (T × R × N) significantly influenced the reductant soluble phosphorus (RSP) and total phosphorus (TP); however, the remaining P fractions were not influenced significantly.”
Claim · model-written summary
CTGLN90 produced the highest sorghum grain yield, 1432 kg per hectare.
- Treatment
- conventional tillage (CT)+ Gliricidia loppings @ 2 tha−1 (GL) + N level @ 90 kg ha−1 (N90) (CTGLN90)e0
- Outcome
- sorghum grain yielde0
- Direction
- higheste0
- Value
- 1432 kg ha−1e0
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conventional tillage (CT)+ Gliricidia loppings @ 2 tha−1 (GL) + N level @ 90 kg ha−1 (N90) (CTGLN90) gave the highest sorghum grain yield (1432 kg ha−1) and P uptake (14.20 kg P ha−1).”
Claim · model-written summary
CTGLN90 produced the highest sorghum P uptake, 14.20 kg P per hectare.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conventional tillage (CT)+ Gliricidia loppings @ 2 tha−1 (GL) + N level @ 90 kg ha−1 (N90) (CTGLN90) gave the highest sorghum grain yield (1432 kg ha−1) and P uptake (14.20 kg P ha−1).”
Claim · model-written summary
Castor yield under CTSSN90 was 1788 kg per hectare, above MTSSN90 at 1761 kg per hectare.
- Taxon
- castor
Ricinus communise0 - Treatment
- CT+ sorghum stover @ 2t ha−1 (SS) + N90 (CTSSN90)e0
- Outcome
- castor yielde0
- Direction
- superioritye0
- Value
- 1788 kg ha−1e0
- Qualifier
- 1761 kg ha−1e0
- Comparator
- MTSSN90e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the order of superiority of treatments in terms of castor yield and P uptake was: CT+ sorghum stover @ 2t ha−1 (SS) + N90 (CTSSN90) (1788 kg ha−1, 11.94 kg P ha−1) > Minimum Tillage (MT) + sorghum stove @2 t ha−1 (SS) + N level @ 90 kg ha−1 (N90) (MTSSN90) (1761 kg ha−1, 14.24 kg P ha−1), respectively.”
Claim · model-written summary
Castor P uptake was 11.94 kg P per hectare under CTSSN90 and 14.24 under MTSSN90, despite the text ranking CTSSN90 superior.
- Taxon
- castorRicinus communise0
- Treatment
- CTSSN90e0
- Outcome
- P uptakee0
- Value
- 11.94 kg P ha−1e0
- Qualifier
- 14.24 kg P ha−1e0
- Comparator
- MTSSN90e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the order of superiority of treatments in terms of castor yield and P uptake was: CT+ sorghum stover @ 2t ha−1 (SS) + N90 (CTSSN90) (1788 kg ha−1, 11.94 kg P ha−1) > Minimum Tillage (MT) + sorghum stove @2 t ha−1 (SS) + N level @ 90 kg ha−1 (N90) (MTSSN90) (1761 kg ha−1, 14.24 kg P ha−1), respectively.”
Claim · model-written summary
Sorghum crop yield was significantly related to P fractions with R2 of 0.726.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant coefficients of multiple determination obtained from regression equations developed between sorghum crop yield and P fractions (R2 = 0.726, p = .05)”
Claim · model-written summary
Sorghum P uptake was significantly related to P fractions with R2 of 0.620.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant coefficients of multiple determination obtained from regression equations developed between sorghum crop yield and P fractions (R2 = 0.726, p = .05) and sorghum P uptake and P fractions (R2 = 0.620, p = .05)”
Claim · model-written summary
Castor yield was significantly related to P fractions with R2 of 0.748.
- Taxon
- castorRicinus communise0
- Outcome
- castor yielde0
- Value
- R2 = 0.748e0
- Qualifier
- p = .05e0
- Comparator
- P fractionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly, castor yield (R2 = 0.748, p = .05) and P uptake (R2 = 0.783) were significantly influenced by the P fractions.”
Claim · model-written summary
Castor P uptake was significantly related to P fractions with R2 of 0.783.
- Taxon
- castorRicinus communise0
- Outcome
- P uptakee0
- Value
- R2 = 0.783e0
- Comparator
- P fractionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly, castor yield (R2 = 0.748, p = .05) and P uptake (R2 = 0.783) were significantly influenced by the P fractions.”
The same questions in other papers
Sorghum · yield · Ricinus communis (castor bean)Positive and negative results
1 in the opposite direction
- negative
Gliricidia · yield · SorghumResults agree
2 papers in the same direction as this paper
- positive
- positive
tillage · yield · SorghumResults differ
101 papers in the same direction as this paper · 17 in the opposite direction · 4 reporting no difference from an alternative
- negative
- negative
- negative
119 papers more in this group
See all 123 papers →tillage · yield · Ricinus communis (castor bean)Positive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
5 papers more in this group
See all 9 papers →nitrogen · yield · SorghumPositive and negative results
263 papers in the same direction as this paper · 22 in the opposite direction · 4 reporting no difference from an alternative
- negative
- negative
- negative
286 papers more in this group
See all 290 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.