Abstract
A field experiment was conducted during winter season of 1995-97 at Ranchi on sandy-loam soil in randomized block design to study the effect of irrigation on dry-matter partitioning and yield of late sown wheat (Triticum aestivum L. emend. Fiori & Paol.). Treatment consisted of 11 irrigation schedules based on frequency and critical growth stages, viz 4 irrigations at (i) crown root initiation + maximum tillering + boot + milk; 3 irrigations at (ii) crown-root initiation + maximum tillering + boot; (iii) crown-root initiation + boot + milk; (iv) crown-root initiation + maximum tillering + milk; (v) maximum tillering + boot+ milk and 2 irrigations at (vi) crown-root initiation + maximum tillering; (vii) crown-root initiation + boot; (viii) crown-root initiation + milk; (ix) maximum tillering + boot; (x) maximum tillering + milk and (xi) boot + milk. Wheat with 4 irrigations gave 27.2 and 64.5 % more grain yield than the crop with 3 (2 128 kg/ha) and 2 (1 646 kg/ha) irrigations respectively. Water-stress at maximum tillering and milk stages drastically reduced the grain yield by 34.7 and 25.9 % respectively compared with the crop with 4 irrigations (2707 kg/ha). Similarly crop with4 irrigations accumulated 60.2 % of total dry-matter (1 089 g/m 2 )in spike, 34.9% in stem and only 5% in the leaves at maturity. Moisture stress at maximum tillering caused maximum reduction in total dry-matter production (23.8 %) as well as spike dry-matter partitioning by approximately 4%.
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Claims 9
Claim · model-written summary
Four irrigations increased grain yield 27.2 percent relative to three irrigations.
- Taxon
- Wheat
Triticum aestivume0 - Treatment
- 4 irrigationse0
- Outcome
- grain yielde0
- Direction
- moree0
- Value
- 27.2e0
- Qualifier
- 2 128 kg/hae0
- Comparator
- 3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat with 4 irrigations gave 27.2 and 64.5 % more grain yield than the crop with 3 (2 128 kg/ha) and 2 (1 646 kg/ha) irrigations respectively”
Claim · model-written summary
Four irrigations increased grain yield 64.5 percent relative to two irrigations.
- Taxon
- WheatTriticum aestivume0
- Treatment
- 4 irrigationse0
- Outcome
- grain yielde0
- Direction
- moree0
- Value
- 64.5 %e0
- Qualifier
- 1 646 kg/hae0
- Comparator
- 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat with 4 irrigations gave 27.2 and 64.5 % more grain yield than the crop with 3 (2 128 kg/ha) and 2 (1 646 kg/ha) irrigations respectively”
Claim · model-written summary
Water stress at maximum tillering reduced grain yield by 34.7 percent relative to four irrigations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Water-stress at maximum tilleringe0
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 34.7e0
- Qualifier
- 2707 kg/hae0
- Comparator
- crop with 4 irrigationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-stress at maximum tillering and milk stages drastically reduced the grain yield by 34.7 and 25.9 % respectively compared with the crop with 4 irrigations (2707 kg/ha)”
t0“wheat”
Claim · model-written summary
Water stress at milk stage reduced grain yield by 25.9 percent relative to four irrigations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- milk stagese0
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 25.9 %e0
- Qualifier
- 2707 kg/hae0
- Comparator
- crop with 4 irrigationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-stress at maximum tillering and milk stages drastically reduced the grain yield by 34.7 and 25.9 % respectively compared with the crop with 4 irrigations (2707 kg/ha)”
t0“wheat”
Claim · model-written summary
With four irrigations, 60.2 percent of total dry matter accumulated in spikes at maturity.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spikee0
- Treatment
- 4 irrigationse0
- Outcome
- total dry-mattere0
- Value
- 60.2 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop with4 irrigations accumulated 60.2 % of total dry-matter (1 089 g/m 2 )in spike”
t0“wheat”
Claim · model-written summary
With four irrigations, 34.9 percent of total dry matter accumulated in stems at maturity.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- steme0
- Value
- 34.9%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“34.9% in stem”
t0“wheat”
Claim · model-written summary
With four irrigations, 5 percent of total dry matter accumulated in leaves at maturity.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- leavese0
- Value
- 5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only 5% in the leaves at maturity”
t0“wheat”
Claim · model-written summary
Moisture stress at maximum tillering reduced total dry matter production by 23.8 percent.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Moisture stress at maximum tilleringe0
- Outcome
- total dry-matter productione0
- Direction
- reductione0
- Value
- 23.8 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moisture stress at maximum tillering caused maximum reduction in total dry-matter production (23.8 %)”
t0“wheat”
Claim · model-written summary
Moisture stress at maximum tillering reduced spike dry matter partitioning by approximately 4 percent.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Moisture stress at maximum tilleringe0
- Outcome
- spike dry-matter partitioninge0
- Direction
- reductione0
- Value
- 4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moisture stress at maximum tillering caused maximum reduction in total dry-matter production (23.8 %) as well as spike dry-matter partitioning by approximately 4%”
t0“wheat”
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