Abstract
An experiment was conducted in research field of Firoozkooh sugarbeet elite seed production station in 2004 to study the effects of different planting and harvesting dates on quantity and quality of sugarbeet monogerm seed. The experiment was a split plot experiment based on a randomized complete block design with four replications. The planting date at three levels (March 18, April 15 and April 29) made the main plot and harvesting date at four levels (harvesting 15, 30, 45 and 60 days after 50% flowering) constituted the sub-plot. After harvesting and threshing, raw seed yield, seed distribution in terms of diameter and thickness and germination percentage were measured. The results showed that the change in planting date significantly affected the occurrence of 50% greening, stem-bearing and flowering in terms of days after planting and intercepted growing degree days (GDD) at 1% probability level, so that the delay in planting date decreased the number of days to 50% greening, stem-bearing and flowering. The main effects of planting and harvesting dates and their interactions had a significant effect on raw seed yield at 1% probability level. The highest sugarbeet raw seed yield (1164 kg/ha) in Firoozkooh was obtained by planting seed-bearing plants in March 18 and harvesting them 45 days after 50% flowering. The delay in planting date significantly decreased the loss caused by seed polishing, while harvesting date significantly affected the proportion of undersized seeds so that it decreased as the harvesting date was retarded. The results indicated that the studied factors did not significantly affect the proportion of standard (with diameters of 3.5-4.5 mm) and oversized seeds (with diameter of >4.5 mm). Delayed harvesting date significantly increased seed germination rate while the change in planting date had no effect on this trait.
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
Delayed planting reduced days to greening, stem-bearing, and flowering.
- Taxon
- sugarbeet
Beta vulgaris subsp. vulgarist0 - Treatment
- delay in planting datee0
- Outcome
- number of days to 50% greening, stem-bearing and floweringe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the delay in planting date decreased the number of days to 50% greening, stem-bearing and flowering”
t0“sugarbeet seed”
Claim · model-written summary
Planting date, harvesting date, and their interaction significantly affected raw seed yield.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarist0
- Treatment
- planting and harvesting datese0
- Outcome
- raw seed yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The main effects of planting and harvesting dates and their interactions had a significant effect on raw seed yield at 1% probability level”
t0“sugarbeet seed”
Claim · model-written summary
The highest raw seed yield was 1164 kg/ha with March 18 planting and harvest 45 days after 50% flowering.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarise0
- Treatment
- planting seed-bearing plants in March 18 and harvesting them 45 days after 50% floweringe0
- Outcome
- raw seed yielde0
- Direction
- higheste0
- Value
- 1164 kg/hae0
- Setting
- Firoozkoohe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest sugarbeet raw seed yield (1164 kg/ha) in Firoozkooh was obtained by planting seed-bearing plants in March 18 and harvesting them 45 days after 50% flowering”
Claim · model-written summary
Delayed planting decreased seed polishing loss.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarist0
- Treatment
- delay in planting datee0
- Outcome
- loss caused by seed polishinge0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The delay in planting date significantly decreased the loss caused by seed polishing”
t0“sugarbeet seed”
Claim · model-written summary
Later harvesting decreased the proportion of undersized seeds.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarist0
- Treatment
- harvesting datee0
- Outcome
- proportion of undersized seedse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harvesting date significantly affected the proportion of undersized seeds so that it decreased as the harvesting date was retarded”
t0“sugarbeet seed”
Claim · model-written summary
The studied factors did not significantly affect proportions of standard and oversized seeds.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarist0
- Treatment
- the studied factorse0
- Outcome
- proportion of standard (with diameters of 3.5-4.5 mm) and oversized seeds (with diameter of >4.5 mm)e0
- Direction
- did not significantly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the studied factors did not significantly affect the proportion of standard (with diameters of 3.5-4.5 mm) and oversized seeds (with diameter of >4.5 mm)”
t0“sugarbeet seed”
Claim · model-written summary
Delayed harvesting increased seed germination rate.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarist0
- Treatment
- Delayed harvesting datee0
- Outcome
- seed germination ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed harvesting date significantly increased seed germination rate”
t0“sugarbeet seed”
Claim · model-written summary
Changing planting date had no effect on seed germination rate.
- Taxon
- sugarbeetBeta vulgaris subsp. vulgarist0
- Treatment
- change in planting datee0
- Outcome
- seed germination ratee1
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the change in planting date had no effect on this trait”
e1“seed germination rate”
t0“sugarbeet seed”
The same questions in other papers
sowing time · growth · Beta vulgaris (beet)Positive and negative results
5 papers in the same direction as this paper · 6 in the opposite direction
- negative
- positive
- positive
8 papers more in this group
See all 12 papers →harvest time · growth · Beta vulgaris (beet)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.