Abstract
Striking the right nutrient balance is essential for sustainable farming and ecosystem health. In this regard, field experiments were conducted in three phases viz., fertility gradient experiment, main experiment and validation experiment through a soil test crop response approach to develop and validate fertilizer prescription equations for sweet corn in comparison with general recommended dose and soil fertility rating approach. The soil data, fresh cob yield, and NPK uptake were used for establishing four important basic parameters, viz., nutrient requirement (kg t-1), contribution of nutrients from fertilizers, soil, and organic manure. The results revealed that nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach. In the validation experiment, STCR NPK+FYM approach for the targeted yield of 25 t ha-1 recorded higher fresh cob yield (23.38 t ha-1) and dry stover yield (35.07 t ha-1) which were significantly higher compared to general recommended dose and soil fertility rating approach. The developed STCR equations for the aforesaid crop are valid as the percent deviation of cob yield from the targeted yield was within ±10%. Similarly, highest nutrient use efficiency was achieved with the STCR approach, specifically when targeting a lower yield through an NPK+FYM mode. Thus, implementation of the STCR approach of fertilizer prescription, with or without FYM, at targeted yields of 25 and 22 t ha-1, not only surpassed the effects of the other fertilizer recommendation approach in terms of cob yields, but also increased NPK uptake, improved nutrient use efficiency and greater economic returns.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 14
Claim · model-written summary
Sweet corn required 5.85 kg N per tonne of fresh cob yield under the STCR NPK alone approach.
Verbatim
e1“nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
Sweet corn required 0.87 kg P per tonne of fresh cob yield under the STCR NPK alone approach.
Verbatim
e1“nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
Sweet corn required 4.31kg K per tonne of fresh cob yield under the STCR NPK alone approach.
Verbatim
e1“nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
Sweet corn required 6.07 kg N per tonne of fresh cob yield under the STCR NPK+FYM approach.
Verbatim
e1“nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
Sweet corn required 0.92 kg P per tonne of fresh cob yield under the STCR NPK+FYM approach.
Verbatim
e1“nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
Sweet corn required 4.33 kg K per tonne of fresh cob yield under the STCR NPK+FYM approach.
Verbatim
e1“nutrients required to produce one tonne of fresh cob yield (NR) were 5.85 kg, 0.87 kg and 4.31kg for N, P and K, respectively under the STCR NPK alone approach and 6.07 kg, 0.92 kg and 4.33 kg for N, P and K, respectively under STCR NPK+FYM approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The STCR NPK+FYM approach at a targeted yield of 25 t/ha gave higher fresh cob yield (23.38 t/ha) than the general recommended dose and the soil fertility rating approach.
Verbatim
e2“STCR NPK+FYM approach for the targeted yield of 25 t ha-1 recorded higher fresh cob yield (23.38 t ha-1) and dry stover yield (35.07 t ha-1) which were significantly higher compared to general recommended dose and soil fertility rating approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The STCR NPK+FYM approach at a targeted yield of 25 t/ha gave higher dry stover yield (35.07 t/ha) than the general recommended dose and the soil fertility rating approach.
Verbatim
e2“STCR NPK+FYM approach for the targeted yield of 25 t ha-1 recorded higher fresh cob yield (23.38 t ha-1) and dry stover yield (35.07 t ha-1) which were significantly higher compared to general recommended dose and soil fertility rating approach”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The percent deviation of cob yield from the targeted yield was within ±10%, so the STCR equations are valid.
Verbatim
e3“the percent deviation of cob yield from the targeted yield was within ±10%”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The highest nutrient use efficiency was achieved with the STCR approach when targeting a lower yield through an NPK+FYM mode.
- Taxon
- sweet cornt0
- Treatment
- STCR approache4
- Outcome
- nutrient use efficiencye4
- Direction
- higheste4
- Qualifier
- specifically when targeting a lower yield through an NPK+FYM modee4
- Setting
- Southern Indiat0
Not reportedComparator
Verbatim
e4“highest nutrient use efficiency was achieved with the STCR approach, specifically when targeting a lower yield through an NPK+FYM mode”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The STCR approach with or without FYM increased NPK uptake compared with the other fertilizer recommendation approach.
Verbatim
e5“not only surpassed the effects of the other fertilizer recommendation approach in terms of cob yields, but also increased NPK uptake, improved nutrient use efficiency and greater economic returns”
e6“implementation of the STCR approach of fertilizer prescription, with or without FYM, at targeted yields of 25 and 22 t ha-1”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The STCR approach with or without FYM improved nutrient use efficiency compared with the other fertilizer recommendation approach.
Verbatim
e5“not only surpassed the effects of the other fertilizer recommendation approach in terms of cob yields, but also increased NPK uptake, improved nutrient use efficiency and greater economic returns”
e6“implementation of the STCR approach of fertilizer prescription, with or without FYM, at targeted yields of 25 and 22 t ha-1”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
The STCR approach with or without FYM gave greater economic returns than the other fertilizer recommendation approach.
Verbatim
e5“not only surpassed the effects of the other fertilizer recommendation approach in terms of cob yields, but also increased NPK uptake, improved nutrient use efficiency and greater economic returns”
e6“implementation of the STCR approach of fertilizer prescription, with or without FYM, at targeted yields of 25 and 22 t ha-1”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
Claim · model-written summary
Implementation of the STCR approach at targeted yields of 25 and 22 t/ha is recommended for sweet corn.
Verbatim
e6“implementation of the STCR approach of fertilizer prescription, with or without FYM, at targeted yields of 25 and 22 t ha-1”
t0“sweet corn (Zea mays L. Saccharata) on Alfisols of Southern India”
The same questions in other papers
fertilization · nutrient: efficiency · Zea mays (maize)Results differ
173 papers in the same direction as this paper · 12 in the opposite direction · 3 reporting no difference from an alternative
- positive
- no effect
- negative
185 papers more in this group
See all 189 papers →fertilization · nutrient: content · Zea mays (maize)Positive and negative results
1,025 papers in the same direction as this paper · 127 in the opposite direction · 11 reporting no difference from an alternative
- positive
- positive
- negative
1,160 papers more in this group
See all 1,164 papers →fertilization · yield · Zea mays (maize)Positive and negative results
3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative
- positive
- negative
- no effect
3,904 papers more in this group
See all 3,908 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.