Abstract
The present investigation was taken up with an aim to optimize the phosphorus fertigation requirement and to determine correct fertigation schedule of phosphorus source through fertigation so as to maximize cane yield and juice quality in sugarcane crop. The phosphate source of fertilizers viz., Mono ammonium phosphate and 19-19-19 and phosphoric acid under sub surface drip irrigation were standardized at seven levels in randomized block design. The plant crop of sugarcane crop cv CoC (SC) 24 was planted on 23.7.2013 and subsequently ratooned on 12.9.2014 The fertigation was given at fortnight intervals up to 210 days after planting. The tiller and millable cane population was maximum with 217670/ha and 89440/ha in plant crop and 210750 /ha and 89950/ha in ratoon crop with 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCl through subsurface drip systems. Application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing the cane yield to 175.48 t/ha and on par with T5(164.87 t/ha),T4 (164.44 t/ha) and T7 (162.46t/ha). In ratoon crop, application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing the cane yield of 180.44t/ha and on par with T4.The treatments did not affect the commercial cane sugar significantly in both plant and ratoon crop. The sugar yield followed the same trend as cane yield. The available nitrogen content was found to be maximum at 20 cm depth of soil both plant and ratoon crop. The available phosphorus content was accumulated at 40 cm depth of soil and available potassium content was observed to be higher at 20 cm depth of soil and decreased with increasing depth. Application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing nitrogen, phosphorus and potassium content and uptake of 259.87, 103.19, 415.15 kg/ha respectively.. The benefit cost ratio was observed to be maximum in the treatment receiving 100 % recommended NPK as urea, 19-19-19 and KCl (T4) both in plant and ratoon crops. So application of 100 % recommended NPK as urea and KCl along with 19-19-19 phosphate sources of fertilizers apply as fortnightly intervals upto 210 days after planting under sub surface drip fertigation improved the yield, economics and soil nutrient status.
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Claims 16
Claim · model-written summary
T6 gave the maximum plant-crop tiller population of 217670/ha.
- Taxon
- sugarcanet0
- Organ / stage
- plant crope0
- Treatment
- 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCle0
- Outcome
- tillere0
- Direction
- maximume0
- Value
- 217670/hae0
Not reportedComparator
Verbatim
e0“The tiller and millable cane population was maximum with 217670/ha and 89440/ha in plant crop and 210750 /ha and 89950/ha in ratoon crop with 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCl through subsurface drip systems”
t0“Sugarcane”
Claim · model-written summary
T6 gave a maximum plant-crop millable cane population of 89440/ha.
- Taxon
- sugarcanet0
- Organ / stage
- plant crope0
- Treatment
- 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCle0
- Outcome
- millable cane populatione0
- Direction
- maximume0
- Value
- 89440/hae0
Not reportedComparator
Verbatim
e0“The tiller and millable cane population was maximum with 217670/ha and 89440/ha in plant crop and 210750 /ha and 89950/ha in ratoon crop with 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCl through subsurface drip systems”
t0“Sugarcane”
Claim · model-written summary
T6 gave a maximum ratoon tiller population of 210750 /ha.
- Taxon
- sugarcanet0
- Organ / stage
- ratoon crope0
- Treatment
- 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCle0
- Outcome
- tillere0
- Direction
- maximume0
- Value
- 210750 /hae0
Not reportedComparator
Verbatim
e0“The tiller and millable cane population was maximum with 217670/ha and 89440/ha in plant crop and 210750 /ha and 89950/ha in ratoon crop with 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCl through subsurface drip systems”
t0“Sugarcane”
Claim · model-written summary
T6 gave a maximum ratoon millable cane population of 89950/ha.
- Taxon
- sugarcanet0
- Organ / stage
- ratoon crope0
- Treatment
- 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCle0
- Outcome
- millable cane populatione0
- Direction
- maximume0
- Value
- 89950/hae0
Not reportedComparator
Verbatim
e0“The tiller and millable cane population was maximum with 217670/ha and 89440/ha in plant crop and 210750 /ha and 89950/ha in ratoon crop with 125 % recommended NPK (300:100:200 kg /ha.) through urea, 19-19-19 and KCl through subsurface drip systems”
t0“Sugarcane”
Claim · model-written summary
T6 significantly increased plant-crop cane yield to 175.48 t/ha and was on par with T5, T4, and T7.
Verbatim
e0“Application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing the cane yield to 175.48 t/ha and on par with T5(164.87 t/ha),T4 (164.44 t/ha) and T7 (162.46t/ha)”
t0“Sugarcane”
Claim · model-written summary
T6 significantly increased ratoon cane yield to 180.44t/ha and was on par with T4.
Verbatim
e0“In ratoon crop, application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing the cane yield of 180.44t/ha and on par with T4”
t0“Sugarcane”
Claim · model-written summary
Treatments did not significantly affect commercial cane sugar in either crop.
Not reportedComparator
Verbatim
e0“The treatments did not affect the commercial cane sugar significantly in both plant and ratoon crop”
t0“Sugarcane”
Claim · model-written summary
Sugar yield followed the same pattern as cane yield.
Verbatim
e0“The sugar yield followed the same trend as cane yield”
t0“Sugarcane”
Claim · model-written summary
Available soil nitrogen was highest at 20 cm depth in plant and ratoon crops.
Verbatim
e0“The available nitrogen content was found to be maximum at 20 cm depth of soil both plant and ratoon crop”
t0“Sugarcane”
Claim · model-written summary
Available soil phosphorus accumulated at 40 cm depth.
Verbatim
e0“The available phosphorus content was accumulated at 40 cm depth of soil”
t0“Sugarcane”
Claim · model-written summary
Available soil potassium was higher at 20 cm and decreased with depth.
Verbatim
e0“available potassium content was observed to be higher at 20 cm depth of soil and decreased with increasing depth”
t0“Sugarcane”
Claim · model-written summary
T6 significantly increased nitrogen content and uptake to 259.87 kg/ha.
- Taxon
- sugarcanet0
- Treatment
- 125 % recommended NPK as urea, 19-19-19 and KCl (T6)e0
- Outcome
- nitrogen, phosphorus and potassium content and uptakee0
- Direction
- increasinge0
- Value
- 259.87e0
Not reportedComparator
Verbatim
e0“Application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing nitrogen, phosphorus and potassium content and uptake of 259.87, 103.19, 415.15 kg/ha respectively”
t0“Sugarcane”
Claim · model-written summary
T6 significantly increased phosphorus content and uptake to 103.19 kg/ha.
- Taxon
- sugarcanet0
- Treatment
- 125 % recommended NPK as urea, 19-19-19 and KCl (T6)e0
- Outcome
- nitrogen, phosphorus and potassium content and uptakee0
- Direction
- increasinge0
- Value
- 103.19e0
Not reportedComparator
Verbatim
e0“Application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing nitrogen, phosphorus and potassium content and uptake of 259.87, 103.19, 415.15 kg/ha respectively”
t0“Sugarcane”
Claim · model-written summary
T6 significantly increased potassium content and uptake to 415.15 kg/ha.
- Taxon
- sugarcanet0
- Treatment
- 125 % recommended NPK as urea, 19-19-19 and KCl (T6)e0
- Outcome
- potassium content and uptakee0
- Direction
- increasinge0
- Value
- 415.15 kg/hae0
Not reportedComparator
Verbatim
e0“Application of 125 % recommended NPK as urea, 19-19-19 and KCl (T6) were significantly superior in increasing nitrogen, phosphorus and potassium content and uptake of 259.87, 103.19, 415.15 kg/ha respectively”
t0“Sugarcane”
Claim · model-written summary
T4 had the maximum benefit cost ratio in plant and ratoon crops.
- Taxon
- sugarcanet0
- Treatment
- 100 % recommended NPK as urea, 19-19-19 and KCl (T4)e0
- Outcome
- benefit cost ratioe0
- Direction
- maximume0
Not reportedComparator
Verbatim
e0“The benefit cost ratio was observed to be maximum in the treatment receiving 100 % recommended NPK as urea, 19-19-19 and KCl (T4) both in plant and ratoon crops”
t0“Sugarcane”
Claim · model-written summary
Authors recommend fortnightly T4 fertigation through 210 days after planting to improve yield, economics, and soil nutrients.
Verbatim
e0“So application of 100 % recommended NPK as urea and KCl along with 19-19-19 phosphate sources of fertilizers apply as fortnightly intervals upto 210 days after planting under sub surface drip fertigation improved the yield, economics and soil nutrient status”
t0“Sugarcane”
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