Abstract
SUMMARY This experiment was conducted to study the long-term effect of soil management treatments on crop yields, sustainability yield indices (SYI) and soil fertility in rainfed semi-arid tropical Alfisol at Hayathnagar Research Farm, Hyderabad, India, during the period 1995 to 2009. The experiment was conducted in a split–split plot design with conventional tillage (CT) and minimum tillage (MT) as main factors, surface application of sorghum stover @ 2 t ha −1 (SS), fresh Gliricidia loppings @ 2 t ha −1 (GL) and ‘no’ residue (NR) as sub-factors and levels of N viz. 0 (N 0 ), 30 (N 30 ), 60 (N 60 ) and 90 (N 90 ) kg N ha −1 as sub–sub factors in a castor–sorghum two-year rotation. On an average, CT maintained 30.4 and 57.0% higher grain yields of sorghum and castor, respectively, over MT. Between two residues, GL performed well in both the crops. The highest yields of sorghum (1425 kg ha −1 ) and castor (876 kg ha −1 ) were recorded at 90 kg N ha −1 . CT maintained higher SYI of 0.44 compared to MT (0.38) and higher agronomic efficiency (AE) of 13.5 and 6.76 kg grain kg −1 N for sorghum and castor crop, respectively. Use of crop residue as mulch had an advantage in increasing the yield of both the crops with increase in rainfall under CT even without N application (control), probably by making the soil more receptive to water infiltration, better moisture storage and by reducing the evaporative losses. Using response functions, the optimum fertilizer N requirement was also computed for a given set of tillage and residue combinations. The revised optimum fertilizer N doses for sorghum and castor varied from 45 to 56 kg ha −1 and 46 to 74 kg ha −1 , respectively, under different tillage and residue combinations and could be recommended depending upon the soil management practices.
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
Conventional tillage gave 30.4% higher sorghum grain yield than minimum tillage.
- Treatment
- conventional tillage (CT)e1
- Outcome
- grain yieldse2
- Direction
- highere2
- Value
- 30.4e2
- Comparator
- minimum tillage (MT)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“conventional tillage (CT) and minimum tillage (MT) as main factors”
e2“CT maintained 30.4 and 57.0% higher grain yields of sorghum and castor, respectively, over MT”
Claim · model-written summary
Conventional tillage gave 57.0% higher castor grain yield than minimum tillage.
- Taxon
- castor
Ricinus communise2 - Treatment
- conventional tillage (CT)e1
- Outcome
- grain yieldse2
- Direction
- highere2
- Value
- 57.0%e2
- Comparator
- minimum tillage (MT)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“conventional tillage (CT) and minimum tillage (MT) as main factors”
e2“CT maintained 30.4 and 57.0% higher grain yields of sorghum and castor, respectively, over MT”
Claim · model-written summary
Green Gliricidia loppings (GL) performed well in both crops relative to the other residue.
- Taxon
- castor–sorghum
SorghumRicinus communise4 - Treatment
- GLe3
- Outcome
- performed welle3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Between two residues, GL performed well in both the crops”
e4“in a castor–sorghum two-year rotation”
Claim · model-written summary
The highest sorghum yield of 1425 kg ha −1 was recorded at 90 kg N ha −1.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The highest yields of sorghum (1425 kg ha −1 ) and castor (876 kg ha −1 ) were recorded at 90 kg N ha −1”
Claim · model-written summary
The highest castor yield of 876 kg ha −1 was recorded at 90 kg N ha −1.
- Taxon
- castorRicinus communise5
- Treatment
- 90 kg N ha −1e5
- Outcome
- yieldse5
- Direction
- higheste5
- Value
- 876 kg ha −1e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The highest yields of sorghum (1425 kg ha −1 ) and castor (876 kg ha −1 ) were recorded at 90 kg N ha −1”
Claim · model-written summary
Conventional tillage maintained a higher sustainability yield index (SYI) of 0.44 than minimum tillage (0.38).
- Taxon
- castor–sorghumSorghumRicinus communise4
- Treatment
- CTe6
- Outcome
- SYIe6
- Direction
- highere6
- Value
- 0.44e6
- Qualifier
- 0.38e6
- Comparator
- MTe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“in a castor–sorghum two-year rotation”
e6“CT maintained higher SYI of 0.44 compared to MT (0.38) and higher agronomic efficiency (AE) of 13.5 and 6.76 kg grain kg −1 N for sorghum and castor crop, respectively”
Claim · model-written summary
Conventional tillage gave higher sorghum agronomic efficiency (AE) of 13.5 kg grain per kg N than minimum tillage.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“CT maintained higher SYI of 0.44 compared to MT (0.38) and higher agronomic efficiency (AE) of 13.5 and 6.76 kg grain kg −1 N for sorghum and castor crop, respectively”
Claim · model-written summary
Conventional tillage gave higher castor agronomic efficiency (AE) of 6.76 kg grain per kg N than minimum tillage.
- Taxon
- castorRicinus communise6
- Treatment
- CTe6
- Outcome
- agronomic efficiency (AE)e6
- Direction
- highere6
- Value
- 6.76 kg grain kg −1 Ne6
- Comparator
- MTe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“CT maintained higher SYI of 0.44 compared to MT (0.38) and higher agronomic efficiency (AE) of 13.5 and 6.76 kg grain kg −1 N for sorghum and castor crop, respectively”
Claim · model-written summary
Crop residue as mulch increased the yield of both crops, with an advantage under CT even without N application.
- Taxon
- castor–sorghumSorghumRicinus communise4
- Treatment
- crop residue as mulche7
- Outcome
- yielde7
- Direction
- increasinge7
- Qualifier
- with increase in rainfalle7
- Comparator
- without N application (control)e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“in a castor–sorghum two-year rotation”
e7“Use of crop residue as mulch had an advantage in increasing the yield of both the crops with increase in rainfall under CT even without N application (control)”
Claim · model-written summary
The revised optimum fertilizer N dose for sorghum varied from 45 to 56 kg ha −1 across tillage and residue combinations.
- Outcome
- optimum fertilizer N dosese1
- Value
- 45 to 56 kg ha −1e1
- Qualifier
- under different tillage and residue combinationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The revised optimum fertilizer N doses for sorghum and castor varied from 45 to 56 kg ha −1 and 46 to 74 kg ha −1 , respectively, under different tillage and residue combinations”
Claim · model-written summary
The revised optimum fertilizer N dose for castor varied from 46 to 74 kg ha −1 across tillage and residue combinations.
- Taxon
- castorRicinus communise1
- Outcome
- optimum fertilizer N dosese1
- Value
- 46 to 74 kg ha −1e1
- Qualifier
- under different tillage and residue combinationse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The revised optimum fertilizer N doses for sorghum and castor varied from 45 to 56 kg ha −1 and 46 to 74 kg ha −1 , respectively, under different tillage and residue combinations”
Claim · model-written summary
The optimum N doses could be recommended depending on soil management practices.
- Taxon
- castor–sorghumSorghumRicinus communise4
- Outcome
- optimum fertilizer N dosese1
- Qualifier
- depending upon the soil management practicese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“in a castor–sorghum two-year rotation”
e1“The revised optimum fertilizer N doses for sorghum and castor varied from 45 to 56 kg ha −1 and 46 to 74 kg ha −1 , respectively, under different tillage and residue combinations”
e2“could be recommended depending upon the soil management practices”
The same questions in other papers
organic · yield · SorghumResults differ
19 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
23 papers more in this group
See all 27 papers →mulching · yield · SorghumResults differ
31 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
29 papers more in this group
See all 33 papers →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
- no effect
- positive
- negative
119 papers more in this group
See all 123 papers →organic · yield · Ricinus communis (castor bean)Positive and negative results
2 papers in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
- positive
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 · Ricinus communis (castor bean)Positive and negative results
30 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
30 papers more in this group
See all 34 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
- positive
- negative
- negative
286 papers more in this group
See all 290 papers →mulching · yield · Ricinus communis (castor bean)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.