Abstract
Some parts of the dry matter accumulated in the wheat stem during the vegetative period are translocated to grain during the grain-filling period. This study assesses the changes in dry matter accumulation in wheat, and the translocation of different internodes of the main stem as affected by some cultural practices. Field experiments, including 3 sowing dates (early, conventional, and late), and 4 N - P - K levels, F_1 - (0 - 0 - 0), F_2 - (110 - 90 - 80), F_3 - (70 - 50 - 40) and F_4 - (150 - 130 - 120), were conducted at the Agricultural Faculty of Shahid Chamran University during 2008 and 2009. The main stem internodes length, weight, dry matter accumulation, and mobilization were measured. Our results showed that the behaviors of the 4 N - P - K levels were similar as they ranged in the same order for pre-anthesis and post-anthesis dry matter accumulation; also, differences in fertilizer application induced similar changes in dry matter accumulation and remobilization. Dry matter translocation was an average of 2% higher for all fertilized treatments, when compared to the control, which has shown the low influence of fertilization on this efficiency in our study. The effect of sowing dates in pre-anthesis dry matter contribution to reproductive organs was much more than the influence associated with the N - P - K levels. However, we recorded differences in dry matter, mobilization efficiency, and mobilization dry matter among sowing dates. The early sowing dates show the best value for mobilized dry matter and dry matter in all stem internodes. Nevertheless, mobilization efficiency had lowest value at this time. The highest mobilization efficiency in all stem internodes was associated with lowest N - P - K level application; also, mobilized dry matter decreased with increasing fertilizer application with all sowing dates and stem internodes, except with early sowing dates for peduncle internodes. With a delay in sowing date, and/or increase in N - P - K levels, the amount of dry matter remobilization decreased, mainly due to a decrease in stem weight. However, the sowing dates had greater influence on dry matter accumulation and remobilization than the fertilizer application.
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Claims 10
Claim · model-written summary
Fertilizer levels had similar ordering for pre- and post-anthesis dry matter accumulation.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- 4 N - P - K levelse0
- Outcome
- pre-anthesis and post-anthesis dry matter accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“the behaviors of the 4 N - P - K levels were similar as they ranged in the same order for pre-anthesis and post-anthesis dry matter accumulation”
Claim · model-written summary
Fertilized treatments averaged 2% higher dry matter translocation than control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- all fertilized treatmentse0
- Outcome
- Dry matter translocatione0
- Direction
- highere0
- Value
- 2%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“Dry matter translocation was an average of 2% higher for all fertilized treatments, when compared to the control”
Claim · model-written summary
Sowing date affected pre-anthesis dry matter contribution to reproductive organs more than N-P-K levels.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- sowing datese0
- Outcome
- pre-anthesis dry matter contribution to reproductive organse0
- Direction
- much moree0
- Comparator
- N - P - K levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“The effect of sowing dates in pre-anthesis dry matter contribution to reproductive organs was much more than the influence associated with the N - P - K levels.”
Claim · model-written summary
Early sowing gave the highest mobilized dry matter.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- early sowing datese0
- Outcome
- mobilized dry mattere0
- Direction
- best valuee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“The early sowing dates show the best value for mobilized dry matter and dry matter in all stem internodes.”
Claim · model-written summary
Early sowing gave the highest dry matter in stem internodes.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- early sowing datese0
- Outcome
- dry matter in all stem internodese0
- Direction
- best valuee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“The early sowing dates show the best value for mobilized dry matter and dry matter in all stem internodes.”
Claim · model-written summary
Early sowing had the lowest mobilization efficiency.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- early sowing datese1
- Outcome
- mobilization efficiencye0
- Direction
- lowest valuee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“mobilization efficiency had lowest value at this time.”
e1“The early sowing dates show the best value”
Claim · model-written summary
The lowest N-P-K application had the highest mobilization efficiency across stem internodes.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- lowest N - P - K level applicatione0
- Outcome
- mobilization efficiencye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“The highest mobilization efficiency in all stem internodes was associated with lowest N - P - K level application”
Claim · model-written summary
Mobilized dry matter decreased as fertilizer application increased, except in peduncle internodes with early sowing.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increasing fertilizer applicatione0
- Outcome
- mobilized dry mattere0
- Direction
- decreasede0
- Qualifier
- except with early sowing dates for peduncle internodese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“mobilized dry matter decreased with increasing fertilizer application with all sowing dates and stem internodes, except with early sowing dates for peduncle internodes”
Claim · model-written summary
Delaying sowing reduced dry matter remobilization, mainly through lower stem weight.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- delay in sowing datee0
- Outcome
- dry matter remobilizatione0
- Direction
- decreasede0
- Qualifier
- a decrease in stem weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“With a delay in sowing date, and/or increase in N - P - K levels, the amount of dry matter remobilization decreased, mainly due to a decrease in stem weight.”
Claim · model-written summary
Increasing N-P-K levels reduced dry matter remobilization, mainly through lower stem weight.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- increase in N - P - K levelse0
- Outcome
- dry matter remobilizatione0
- Direction
- decreasede0
- Qualifier
- a decrease in stem weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat (Triticum aestivum L.)”
e0“With a delay in sowing date, and/or increase in N - P - K levels, the amount of dry matter remobilization decreased, mainly due to a decrease in stem weight.”
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See all 755 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.