Abstract
Delayed planting of sugar beet, use of nitrogen fertilizer and growth promoting bacteria are important in accelerating growth and compensating time loss. To study this subject, a split split plot experiment was conducted in a randomized complete block design with 3 replications and 8 treatments in 2018 at the Research Farm of Ferdowsi University of Mashhad. The factors under study consisted of planting date with two levels (regular planting, D1, and delayed planting, D2) as the main factor, nitrogen fertilizer with two levels (use of nitrogen fertilizer based on recommended rate, N1 and 25% less than recommended rate, N2) as a subfactors and bacterial growth stimulant with two levels (bacterial inoculation, B2, and without its use, B1) were considered as sub-sub- factors. Growth indices under study were leaf area index, total dry matter, crop growth rate, relative growth rate and net assimilation rate. In this study, highest leaf area index (3.5) and dry matter accumulation (2898 g.m-2) in thermal unit, as well as growth rate, relative growth rate and net assimilation rate under regular and delayed planting dates were due to the use of recommended rate of nitrogen fertilizer and bacterial inoculation treatments. The least amounts of these traits were obtained at both planting dates and use of nitrogen fertilizer, 25% less than the recommendation, and without using bacteria. Root yield and sugar content sugar beet under treatment of bacterial and nitrogen use, based on recommended rate, showed 8 to 10% higher than other treatments, under both regular and delayed planting date. It seems that the combined use of chemical and biological fertilizers is useful in delayed sowing, to compensate delayed time loss planting of sugar beet.
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Claims 7
Claim · model-written summary
Recommended nitrogen and bacterial inoculation gave the highest leaf area index, 3.5.
- Taxon
- Sugar Beet
Beta vulgaris subsp. vulgarist0 - Treatment
- recommended rate of nitrogen fertilizer and bacterial inoculatione0
- Outcome
- leaf area indexe0
- Direction
- higheste0
- Value
- 3.5e0
Not reportedComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In this study, highest leaf area index (3.5) and dry matter accumulation (2898 g.m-2) in thermal unit, as well as growth rate, relative growth rate and net assimilation rate under regular and delayed planting dates were due to the use of recommended rate of nitrogen fertilizer and bacterial inoculation treatments.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
Claim · model-written summary
Recommended nitrogen and bacterial inoculation gave the highest dry matter accumulation, 2898 g.m-2.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- recommended rate of nitrogen fertilizer and bacterial inoculatione0
- Outcome
- dry matter accumulatione0
- Direction
- higheste0
- Value
- 2898 g.m-2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In this study, highest leaf area index (3.5) and dry matter accumulation (2898 g.m-2) in thermal unit, as well as growth rate, relative growth rate and net assimilation rate under regular and delayed planting dates were due to the use of recommended rate of nitrogen fertilizer and bacterial inoculation treatments.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
Claim · model-written summary
Recommended nitrogen and bacterial inoculation gave the highest growth rate, relative growth rate and net assimilation rate.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- recommended rate of nitrogen fertilizer and bacterial inoculatione0
- Outcome
- growth rate, relative growth rate and net assimilation ratee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In this study, highest leaf area index (3.5) and dry matter accumulation (2898 g.m-2) in thermal unit, as well as growth rate, relative growth rate and net assimilation rate under regular and delayed planting dates were due to the use of recommended rate of nitrogen fertilizer and bacterial inoculation treatments.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
Claim · model-written summary
Reduced nitrogen without bacteria gave the lowest growth indices at both planting dates.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- nitrogen fertilizer, 25% less than the recommendation, and without using bacteriae0
- Outcome
- these traitse0
- Direction
- leaste0
- Qualifier
- at both planting datese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The least amounts of these traits were obtained at both planting dates and use of nitrogen fertilizer, 25% less than the recommendation, and without using bacteria.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
Claim · model-written summary
Root yield was 8 to 10% higher with bacteria and recommended nitrogen than with other treatments.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- bacterial and nitrogen use, based on recommended ratee0
- Outcome
- Root yielde0
- Direction
- highere0
- Value
- 8 to 10%e0
- Qualifier
- under both regular and delayed planting datee0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield and sugar content sugar beet under treatment of bacterial and nitrogen use, based on recommended rate, showed 8 to 10% higher than other treatments, under both regular and delayed planting date.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
Claim · model-written summary
sugar content was 8 to 10% higher with bacteria and recommended nitrogen than with other treatments.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Treatment
- bacterial and nitrogen use, based on recommended ratee0
- Outcome
- sugar contente0
- Direction
- highere0
- Value
- 8 to 10%e0
- Qualifier
- under both regular and delayed planting datee0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root yield and sugar content sugar beet under treatment of bacterial and nitrogen use, based on recommended rate, showed 8 to 10% higher than other treatments, under both regular and delayed planting date.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
Claim · model-written summary
The authors suggest combined chemical and biological fertilizer for delayed sowing of sugar beet.
- Taxon
- Sugar BeetBeta vulgaris subsp. vulgarist0
- Outcome
- combined use of chemical and biological fertilizerse0
- Qualifier
- in delayed sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It seems that the combined use of chemical and biological fertilizers is useful in delayed sowing, to compensate delayed time loss planting of sugar beet.”
t0“Effect of N Fertilizer and Growth Stimulating Bacteria on Growth Traits of Sugar Beet”
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