Abstract
The current investigation was conducted on a sandy clay loam soil at the Agricultural College Farm, Bapatla, during the rabi season of 2021–2022, to examine the impact of different nitrogen levels and rice crop residue management strategies on soil physicochemical properties and rhizosphere biota of sorghum. Because the grain is frequently caught in constant rain, which causes grain molds to damage its quality, sorghum harvested during the rainy season is mostly used as feed and for other industrial purposes. But because of its high grain quality, post-rainy sorghum is mostly consumed as food. It is also a major source of stover, particularly in dry seasons. The area planted to sorghum has drastically decreased, particularly during the rainy season. However, post-rainy sorghum has remained relatively stable and is primarily grown in three districts of Karnataka (Bijapur, Gulbarga, and Raichur) and six districts of Maharashtra (Solapur, Ahmednagar, Pune, Beed, Osmanabad, and Aurangabad), in addition to portions of Andhra Pradesh and Tamil Nadu. The experiment was laid out in split-plot design with four rice crop residue management techniques (M1: No residue, M2: Burning of residue, M3: Incorporation of residue with rotovator without application of ANGRAU decomposer and M4: Incorporation of residue with rotovator after application of ANGRAU decomposer as main plot treatments and four nitrogen levels (Control, 40 kg ha−1, 80 kg ha−1and 120 kg ha−1) as sub plot treatments. Among soil physico chemical properties, pH, EC and available phosphorous did not differ significantly among the rice crop residue management techniques and nitrogen levels whereas the highest soil organic carbon, available nitrogen and available potassium were obtained with incorporation of residue with rotovator after application of ANGRAU decomposer (M4). Soil rhizosphere biota was significantly influenced by rice crop residue management techniques and was not influenced by nitrogen levels. Mean values for rice crop residue management techniques revealed that highest bacterial population was observed with incorporation of residue with rotovator after application of ANGRAU decomposer (M4) and lowest bacterial population was observed with burning of residue (M2). Highest fungal population was observed with incorporation of residue with rotovator after application of ANGRAU decomposer (M4) and lowest fungal population was observed with no residue (M1) which was on par with burning of residue (M2). Highest actinomycetes population was observed with incorporation of residue with rotovator after application of ANGRAU decomposer (M4) which was on par with incorporation of residue with rotovator without application of ANGRAU decomposer (M3) and lowest actinomycetes population was observed with burning of residue (M2) which was on par with no residue (M1).
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Claims 10
Claim · model-written summary
Soil pH, EC and available phosphorus did not differ significantly among rice residue management techniques and nitrogen levels.
- Treatment
- rice crop residue management techniques and nitrogen levelse2
- Outcome
- pH, EC and available phosphorouse2
- Direction
- did not differ significantlye2
- Setting
- Agricultural College Farm, Bapatlae1
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e1“conducted on a sandy clay loam soil at the Agricultural College Farm, Bapatla, during the rabi season of 2021–2022”
e2“pH, EC and available phosphorous did not differ significantly among the rice crop residue management techniques and nitrogen levels”
Claim · model-written summary
Incorporating residue with a rotovator after applying ANGRAU decomposer gave the highest soil organic carbon, available nitrogen and available potassium.
- Treatment
- incorporation of residue with rotovator after application of ANGRAU decomposere3
- Outcome
- soil organic carbon, available nitrogen and available potassiume3
- Direction
- higheste3
- Setting
- Agricultural College Farm, Bapatlae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e1“conducted on a sandy clay loam soil at the Agricultural College Farm, Bapatla, during the rabi season of 2021–2022”
e3“the highest soil organic carbon, available nitrogen and available potassium were obtained with incorporation of residue with rotovator after application of ANGRAU decomposer (M4)”
Claim · model-written summary
Rhizosphere biota of sorghum was significantly influenced by rice crop residue management techniques.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e4“Soil rhizosphere biota was significantly influenced by rice crop residue management techniques and was not influenced by nitrogen levels”
Claim · model-written summary
Rhizosphere biota of sorghum was not influenced by nitrogen levels.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e4“Soil rhizosphere biota was significantly influenced by rice crop residue management techniques and was not influenced by nitrogen levels”
Claim · model-written summary
Incorporation of residue with a rotovator after applying ANGRAU decomposer gave the highest bacterial population.
- Treatment
- incorporation of residue with rotovator after application of ANGRAU decomposer (M4)e5
- Outcome
- bacterial populatione5
- Direction
- higheste5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e5“highest bacterial population was observed with incorporation of residue with rotovator after application of ANGRAU decomposer (M4)”
Claim · model-written summary
Burning of residue gave the lowest bacterial population.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e6“lowest bacterial population was observed with burning of residue (M2)”
Claim · model-written summary
Incorporation of residue with a rotovator after applying ANGRAU decomposer gave the highest fungal population.
- Treatment
- incorporation of residue with rotovator after application of ANGRAU decomposer (M4)e7
- Outcome
- fungal populatione7
- Direction
- Higheste7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e7“Highest fungal population was observed with incorporation of residue with rotovator after application of ANGRAU decomposer (M4)”
Claim · model-written summary
No residue gave the lowest fungal population, on par with burning of residue.
- Treatment
- no residue (M1)e1
- Outcome
- fungal populatione1
- Direction
- loweste1
- Comparator
- burning of residue (M2)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e1“lowest fungal population was observed with no residue (M1) which was on par with burning of residue (M2)”
Claim · model-written summary
Incorporation of residue with a rotovator after applying ANGRAU decomposer gave the highest actinomycetes population, on par with incorporation without the decomposer.
- Treatment
- incorporation of residue with rotovator after application of ANGRAU decomposer (M4)e1
- Outcome
- actinomycetes populatione1
- Direction
- Higheste1
- Comparator
- incorporation of residue with rotovator without application of ANGRAU decomposer (M3)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e1“Highest actinomycetes population was observed with incorporation of residue with rotovator after application of ANGRAU decomposer (M4) which was on par with incorporation of residue with rotovator without application of ANGRAU decomposer (M3)”
Claim · model-written summary
Burning of residue gave the lowest actinomycetes population, on par with no residue.
- Treatment
- burning of residue (M2)e1
- Outcome
- actinomycetes populatione1
- Direction
- lowest actinomycetes populatione1
- Comparator
- no residue (M1)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rhizosphere biota of sorghum”
e1“lowest actinomycetes population was observed with burning of residue (M2) which was on par with no residue (M1)”
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See all 7 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.