Abstract
In trials in 1975-8 under semi-arid conditions (av. rainfall 796 mm; mostly received during June-Sept.) in Rajasthan with sorghum and pigeon pea grown in alternate rows 30 cm apart and given 0-75 kg N/ha alone and with 40 kg P2O5 and P + 40 kg K2O/ha, increasing the N rates increased grain yields of sorghum, but decreased seed yields of pigeon pea; P and PK had no effect. As there was no significant difference in sorghum yields between N rates of 25 and 50 kg/ha and between 50 and 75 kg N/ha, the opt. N rate for the mixture under rain-fed conditions was 25-50 kg/ha instead of the recommended rate of 75 kg N/ha for sorghum in pure stands. N added to soil through leaf litter of pigeonpea after harvesting was 10-40 kg/ha in different treatments
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 8
Claim · model-written summary
Increasing nitrogen raised sorghum grain yield.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the N rates increased grain yields of sorghum”
Claim · model-written summary
Increasing nitrogen lowered pigeon pea seed yield.
- Taxon
- pigeon pea
Cajanus cajane0 - Treatment
- increasing the N ratese0
- Outcome
- seed yields of pigeon peae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the N rates increased grain yields of sorghum, but decreased seed yields of pigeon pea”
Claim · model-written summary
Phosphorus had no effect in the intercropping trial.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P and PK had no effect”
t0“sorghum”
Claim · model-written summary
Phosphorus plus potassium had no effect in the intercropping trial.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P and PK had no effect”
t0“sorghum”
Claim · model-written summary
Sorghum yield did not differ significantly between 25 and 50 kg N/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference in sorghum yields between N rates of 25 and 50 kg/ha”
Claim · model-written summary
Sorghum yield did not differ significantly between 50 and 75 kg N/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“between 50 and 75 kg N/ha”
t0“sorghum”
t1“no significant difference in sorghum yields”
Claim · model-written summary
The authors recommend 25–50 kg N/ha for the rainfed mixture.
- Outcome
- opt. N rate for the mixture under rain-fed conditionse0
- Value
- 25-50 kg/hae0
- Comparator
- 75 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the opt. N rate for the mixture under rain-fed conditions was 25-50 kg/ha instead of the recommended rate of 75 kg N/ha for sorghum in pure stands”
t0“sorghum”
Claim · model-written summary
Pigeonpea leaf litter added 10–40 kg/ha nitrogen to soil after harvest.
- Taxon
- pigeonpeaCajanus cajane0
- Outcome
- N added to soil through leaf litter of pigeonpeae0
- Value
- 10-40 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N added to soil through leaf litter of pigeonpea after harvesting was 10-40 kg/ha in different treatments”
The same questions in other papers
nitrogen · yield · Cajanus cajan (pigeon pea)Positive and negative results
4 papers in the same direction as this paper · 32 in the opposite direction
- positive
- positive
- positive
33 papers more in this group
See all 37 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
- negative
- negative
- negative
286 papers more in this group
See all 290 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.