Abstract
A pot experiment was conducted to determine the effect of four rates of nitrogen (N) in the form of leucaena leaves and the time of application on the performance of sorghum plants using the 15N isotopic dilution technique. Results showed that leucaena green manure (LGM) increased dry matter and N yield of sorghum. Nitrogen recoveries of LGM ranged between 23 and 47%. An additional beneficial effect of LGM was attributed to the enhancement of soil N uptake. The best timing of LGM incorporation for obtaining more N derived from LGM, less soil N uptake, and greater dry matter and N in sorghum leaves seemed to be at planting. However, the appropriate timing and rate of LGM to obtain greater dry matter and N yield in panicles, as well as in the whole plant of sorghum, appeared to be at 30 days before planting, particularly a rate of 120 kg N ha−1.
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Claims 10
Claim · model-written summary
Leucaena green manure increased sorghum dry matter.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that leucaena green manure (LGM) increased dry matter and N yield of sorghum.”
Claim · model-written summary
Leucaena green manure increased sorghum N yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that leucaena green manure (LGM) increased dry matter and N yield of sorghum.”
Claim · model-written summary
Sorghum recovered 23 to 47% of nitrogen from leucaena green manure.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen recoveries of LGM ranged between 23 and 47%.”
t0“Sorghum”
Claim · model-written summary
Leucaena green manure enhanced sorghum soil nitrogen uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An additional beneficial effect of LGM was attributed to the enhancement of soil N uptake.”
t0“Sorghum”
Claim · model-written summary
LGM incorporation at planting appeared best for more N derived from LGM.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best timing of LGM incorporation for obtaining more N derived from LGM, less soil N uptake, and greater dry matter and N in sorghum leaves seemed to be at planting.”
t0“Sorghum”
Claim · model-written summary
LGM incorporation at planting appeared best for less soil N uptake.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best timing of LGM incorporation for obtaining more N derived from LGM, less soil N uptake, and greater dry matter and N in sorghum leaves seemed to be at planting.”
t0“Sorghum”
Claim · model-written summary
LGM incorporation at planting appeared best for greater dry matter.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best timing of LGM incorporation for obtaining more N derived from LGM, less soil N uptake, and greater dry matter and N in sorghum leaves seemed to be at planting.”
t0“Sorghum”
Claim · model-written summary
LGM incorporation at planting appeared best for greater N in sorghum leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The best timing of LGM incorporation for obtaining more N derived from LGM, less soil N uptake, and greater dry matter and N in sorghum leaves seemed to be at planting.”
Claim · model-written summary
LGM at 30 days before planting, particularly 120 kg N ha−1, appeared appropriate for greater dry matter in panicles and whole sorghum plants.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the appropriate timing and rate of LGM to obtain greater dry matter and N yield in panicles, as well as in the whole plant of sorghum, appeared to be at 30 days before planting, particularly a rate of 120 kg N ha−1.”
Claim · model-written summary
LGM at 30 days before planting, particularly 120 kg N ha−1, appeared appropriate for greater N yield in panicles and whole sorghum plants.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the appropriate timing and rate of LGM to obtain greater dry matter and N yield in panicles, as well as in the whole plant of sorghum, appeared to be at 30 days before planting, particularly a rate of 120 kg N ha−1.”
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