Abstract
The effect of a single application of phosphorus (P) fertilizer on yields of wheat and a following lentil crop was studied in two-course rotational trials under rainfed conditions in a Mediterranean-type environment. Wheat was grown during the 1984/85 and 1985/86 growing seasons at three sites in north-west Syria, with P applied at rates of 0, 17.5, 35.0 and 52.5 kg ha−1. Lentil (Lens culinaris Med.) was grown during the 1985/86 and 1986/87 seasons at the same sites, following the wheat crops. During the 1985/86 season, no additional P was applied to the lentil crop. During the 1986/87 season, additional P was applied to the lentil crops grown at two of the three sites, in order to compare the residual and direct effects of P fertilizer application. Initial contents of extractable soil P (P-Olsen) were low at all sites: in the range of 2–5 ppm. The response of wheat to direct application of P and of lentil to residual P were described by a modified Mitscherlich equation accounting for the effect of rainfall on potential yield (under rainfed conditions) and on the availability of P to the crop. Under the conditions of the experiments, lentil benefited significantly from P fertilizer applied to the preceding wheat crop. It was concluded that a single application of P to the wheat crop in a wheat-lentil rotation would reduce the cost of lentil production without significantly reducing lentil yields.
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Claims 3
Claim · model-written summary
Lentil yields benefited significantly from P fertilizer applied to the preceding wheat crop in north-west Syria.
- Taxon
- Lentil
Lens culinarise1 - Treatment
- P fertilizer applied to the preceding wheat crope3
- Outcome
- yieldse0
- Direction
- benefitede3
- Setting
- north-west Syriae2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on yields of wheat and a following lentil crop”
e1“Lentil (Lens culinaris Med.)”
e2“at three sites in north-west Syria”
e3“Under the conditions of the experiments, lentil benefited significantly from P fertilizer applied to the preceding wheat crop”
Claim · model-written summary
A single application of P to the wheat crop in a wheat-lentil rotation would reduce the cost of lentil production.
- Taxon
- lentilLens culinarise4
- Treatment
- a single application of P to the wheat crope4
- Outcome
- reduce the cost of lentil productione4
- Qualifier
- without significantly reducing lentil yieldse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“a single application of P to the wheat crop in a wheat-lentil rotation would reduce the cost of lentil production without significantly reducing lentil yields”
Claim · model-written summary
Lentil yields were not significantly reduced by a single application of P to the wheat crop.
- Taxon
- lentilLens culinarise4
- Treatment
- a single application of P to the wheat crope4
- Outcome
- lentil yieldse4
- Direction
- without significantly reducinge4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“a single application of P to the wheat crop in a wheat-lentil rotation would reduce the cost of lentil production without significantly reducing lentil yields”
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