Abstract
The effects of different fertilization practices on the carrot root and shoot dry weights, yield, dry matter contents and root/shoot ratio were studied in field experiments. Unirrigated and irrigated placement and broadcast fertilization, fertirrigations without basic fertilization, fertirrigations with basic fertilization, and PK placement with N fertirrigations were compared. In addition, split application was compared to single application of nutrients. The soil nutrient levels were studied by soil analysis. The carrot root and shoot samples were collected three times during the growing period. Cv. Nantes Duke Notabene 370 was grown. The carrot shoots reached their maximum weight already by three months, whereas roots grew slowly during the first two months but grew considerably during both the third and fourth month. The root and shoot dry weights were positively correlated at all sampling dates in both years ( r ≥0.77***), The big photosynthetizing apparatus caused the production of high root yield. The placement fertilization of granular NPK fertilizer increased the yield as compared to broadcast of granular NPK fertilizer (p = 0.009**). The yield was also increased by the placement of P and K as compared to treatments without placement fertilization of P and K (p = 0.03*). There was no difference in yields between single application and split application. Irrigation decreased the yield in 1985 (p = 0.03*). In 1986the yield was significantly higher than in 1985 (p = 0.000***). At harvest the fertilization did not affect the dry matter content of carrot roots when compared with unfertilized treatments. The difference in dry matter content was greater between years (p = 0.000***) than between fertilization practices (p = 0.05*). The treatment PK placement with N fertirrigations yielded carrots with a higher dry matter content than did the NPK fertirrigations treatments. Besides the fertilization experiment samples from two organically cultivated fields were collected to obtain data concerning organically cultivated carrots and soils.
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Claims 12
Claim · model-written summary
Carrot shoots reached maximum weight by three months.
- Taxon
- carrot
Daucus carotae0 - Organ / stage
- shootse0
- Outcome
- maximum weighte0
- Value
- three monthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carrot shoots reached their maximum weight already by three months”
Claim · model-written summary
Carrot roots grew slowly during the first two months and considerably in the third and fourth months.
Not reportedTaxon
Verbatim
e0“roots grew slowly during the first two months but grew considerably during both the third and fourth month”
Claim · model-written summary
Root and shoot dry weights were positively correlated at every sampling date in both years.
- Organ / stage
- root and shoote0
- Outcome
- root and shoot dry weightse0
- Direction
- positively correlatede0
- Value
- r ≥0.77***e0
Not reportedTaxon
Verbatim
e0“The root and shoot dry weights were positively correlated at all sampling dates in both years ( r ≥0.77***)”
Claim · model-written summary
A large photosynthesizing apparatus was reported to cause high root yield.
Not reportedTaxon
Verbatim
e0“The big photosynthetizing apparatus caused the production of high root yield”
Claim · model-written summary
Placed granular NPK increased carrot yield relative to broadcast NPK.
- Treatment
- placement fertilization of granular NPK fertilizere0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- broadcast of granular NPK fertilizere0
Not reportedTaxon
Verbatim
e0“The placement fertilization of granular NPK fertilizer increased the yield as compared to broadcast of granular NPK fertilizer (p = 0.009**)”
Claim · model-written summary
Placement of P and K increased yield relative to no P and K placement.
- Treatment
- placement of P and Ke0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- treatments without placement fertilization of P and Ke0
Not reportedTaxon
Verbatim
e0“The yield was also increased by the placement of P and K as compared to treatments without placement fertilization of P and K (p = 0.03*)”
Claim · model-written summary
Single and split nutrient application produced no difference in yield.
Not reportedTaxon
Verbatim
e0“There was no difference in yields between single application and split application”
Claim · model-written summary
Irrigation decreased yield in 1985.
Not reportedTaxonComparator
Verbatim
e0“Irrigation decreased the yield in 1985 (p = 0.03*)”
Claim · model-written summary
Yield was higher in 1986 than in 1985.
Not reportedTaxon
Verbatim
e0“In 1986the yield was significantly higher than in 1985 (p = 0.000***)”
Claim · model-written summary
At harvest, fertilization did not change carrot root dry matter content versus unfertilized treatments.
- Taxon
- carrotDaucus carotae0
- Treatment
- fertilizatione0
- Outcome
- dry matter content of carrot rootse0
- Direction
- did not affecte0
- Comparator
- unfertilized treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At harvest the fertilization did not affect the dry matter content of carrot roots when compared with unfertilized treatments”
Claim · model-written summary
Year-to-year dry matter variation exceeded variation between fertilization practices.
- Outcome
- difference in dry matter contente0
- Direction
- greatere0
- Comparator
- between fertilization practicese0
Not reportedTaxon
Verbatim
e0“The difference in dry matter content was greater between years (p = 0.000***) than between fertilization practices (p = 0.05*)”
Claim · model-written summary
PK placement with N fertigation yielded higher dry matter content than NPK fertigation.
- Taxon
- carrotsDaucus carotae0
- Treatment
- PK placement with N fertirrigationse0
- Outcome
- dry matter contente0
- Direction
- highere0
- Comparator
- NPK fertirrigations treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment PK placement with N fertirrigations yielded carrots with a higher dry matter content than did the NPK fertirrigations treatments”
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