A mutrágyázás hatása a szemescirok (Sorghum vulgare Pers.) fejlodésére és termésére

Translated title of the contribution: Effect of fertilisation on the yield of grain sorghum (Sorghum vulgare Pers.)

I. Kádár, László Radics

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect of various levels and combinations of NPK supplies on the development, weed infestation, yield and yield components of grain sorghum was studied in 1992, in the 19th year of a long-term mineral fertilisation experiment set up on calcareous loamy chernozem soil. The soil of the experimental site contained 3% humus, 5% CaCO3 and 20% clay in the ploughed layer, and was supplied poorly with P and Zn and moderately well with N and K. The experiment consisted of 4N × 4P × 4K = 64 treatments in two replications, giving a total of 128 plots. The groundwater was at a depth of 15 m and the area was susceptible to drought. In 1992 only 17 mm of rainfall was recorded in the hot summer months of July and August, while a total of 324 mm rain fell over the whole vegetation period, from May till October. The main results can be summarised as follows: 1. N fertilisation increased the weed cover at the 4-6-leaf stage from 13% to 31%, while the cover with sorghum declined from 55% to 40%. As P supplies improved there was an increase in the cover of both weeds and sorghum, with a particularly large increase for Amaranthus species. No effect was observed for K fertilisation. 2. The highest grain yield of 4.1 t/ha, or approx. 9.0 t/ha total aboveground air-dry yield, was obtained on plots given no N for 19 years, with P and K supplies of 105 mg/kg AL-P2O5 and 128 mg/kg AL-K 2O. N fertilisation caused yield depression, leading to yield losses as high as 50% on P-deficient soil when N was applied at a rate of 300 kg/ha/year. No effect was observed for K. fertilisation. 3. In extremely dry years, under non-intensive farming conditions, without mineral fertilisation, grain sorghum could be competitive with maize on this type of soil, especially if the juicy stalks are used as fodder or for some other purpose. In comparison, in the same year maize gave a grain yield of 3-4 t/ha on the control plots of the long-term mineral fertilisation experiment at this location.

Original languageHungarian
Pages (from-to)77-87
Number of pages11
JournalNovenytermeles
Volume54
Issue number1-2
Publication statusPublished - 2005

Fingerprint

Sorghum bicolor subsp. bicolor
grain sorghum
weeds
minerals
Sorghum (Poaceae)
grain yield
rain
Amaranthus
corn
loam soils
calcareous soils
humus
yield components
soil types
soil
groundwater
farming systems
clay
drought
forage

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

A mutrágyázás hatása a szemescirok (Sorghum vulgare Pers.) fejlodésére és termésére. / Kádár, I.; Radics, László.

In: Novenytermeles, Vol. 54, No. 1-2, 2005, p. 77-87.

Research output: Contribution to journalArticle

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title = "A mutr{\'a}gy{\'a}z{\'a}s hat{\'a}sa a szemescirok (Sorghum vulgare Pers.) fejlod{\'e}s{\'e}re {\'e}s term{\'e}s{\'e}re",
abstract = "The effect of various levels and combinations of NPK supplies on the development, weed infestation, yield and yield components of grain sorghum was studied in 1992, in the 19th year of a long-term mineral fertilisation experiment set up on calcareous loamy chernozem soil. The soil of the experimental site contained 3{\%} humus, 5{\%} CaCO3 and 20{\%} clay in the ploughed layer, and was supplied poorly with P and Zn and moderately well with N and K. The experiment consisted of 4N × 4P × 4K = 64 treatments in two replications, giving a total of 128 plots. The groundwater was at a depth of 15 m and the area was susceptible to drought. In 1992 only 17 mm of rainfall was recorded in the hot summer months of July and August, while a total of 324 mm rain fell over the whole vegetation period, from May till October. The main results can be summarised as follows: 1. N fertilisation increased the weed cover at the 4-6-leaf stage from 13{\%} to 31{\%}, while the cover with sorghum declined from 55{\%} to 40{\%}. As P supplies improved there was an increase in the cover of both weeds and sorghum, with a particularly large increase for Amaranthus species. No effect was observed for K fertilisation. 2. The highest grain yield of 4.1 t/ha, or approx. 9.0 t/ha total aboveground air-dry yield, was obtained on plots given no N for 19 years, with P and K supplies of 105 mg/kg AL-P2O5 and 128 mg/kg AL-K 2O. N fertilisation caused yield depression, leading to yield losses as high as 50{\%} on P-deficient soil when N was applied at a rate of 300 kg/ha/year. No effect was observed for K. fertilisation. 3. In extremely dry years, under non-intensive farming conditions, without mineral fertilisation, grain sorghum could be competitive with maize on this type of soil, especially if the juicy stalks are used as fodder or for some other purpose. In comparison, in the same year maize gave a grain yield of 3-4 t/ha on the control plots of the long-term mineral fertilisation experiment at this location.",
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N2 - The effect of various levels and combinations of NPK supplies on the development, weed infestation, yield and yield components of grain sorghum was studied in 1992, in the 19th year of a long-term mineral fertilisation experiment set up on calcareous loamy chernozem soil. The soil of the experimental site contained 3% humus, 5% CaCO3 and 20% clay in the ploughed layer, and was supplied poorly with P and Zn and moderately well with N and K. The experiment consisted of 4N × 4P × 4K = 64 treatments in two replications, giving a total of 128 plots. The groundwater was at a depth of 15 m and the area was susceptible to drought. In 1992 only 17 mm of rainfall was recorded in the hot summer months of July and August, while a total of 324 mm rain fell over the whole vegetation period, from May till October. The main results can be summarised as follows: 1. N fertilisation increased the weed cover at the 4-6-leaf stage from 13% to 31%, while the cover with sorghum declined from 55% to 40%. As P supplies improved there was an increase in the cover of both weeds and sorghum, with a particularly large increase for Amaranthus species. No effect was observed for K fertilisation. 2. The highest grain yield of 4.1 t/ha, or approx. 9.0 t/ha total aboveground air-dry yield, was obtained on plots given no N for 19 years, with P and K supplies of 105 mg/kg AL-P2O5 and 128 mg/kg AL-K 2O. N fertilisation caused yield depression, leading to yield losses as high as 50% on P-deficient soil when N was applied at a rate of 300 kg/ha/year. No effect was observed for K. fertilisation. 3. In extremely dry years, under non-intensive farming conditions, without mineral fertilisation, grain sorghum could be competitive with maize on this type of soil, especially if the juicy stalks are used as fodder or for some other purpose. In comparison, in the same year maize gave a grain yield of 3-4 t/ha on the control plots of the long-term mineral fertilisation experiment at this location.

AB - The effect of various levels and combinations of NPK supplies on the development, weed infestation, yield and yield components of grain sorghum was studied in 1992, in the 19th year of a long-term mineral fertilisation experiment set up on calcareous loamy chernozem soil. The soil of the experimental site contained 3% humus, 5% CaCO3 and 20% clay in the ploughed layer, and was supplied poorly with P and Zn and moderately well with N and K. The experiment consisted of 4N × 4P × 4K = 64 treatments in two replications, giving a total of 128 plots. The groundwater was at a depth of 15 m and the area was susceptible to drought. In 1992 only 17 mm of rainfall was recorded in the hot summer months of July and August, while a total of 324 mm rain fell over the whole vegetation period, from May till October. The main results can be summarised as follows: 1. N fertilisation increased the weed cover at the 4-6-leaf stage from 13% to 31%, while the cover with sorghum declined from 55% to 40%. As P supplies improved there was an increase in the cover of both weeds and sorghum, with a particularly large increase for Amaranthus species. No effect was observed for K fertilisation. 2. The highest grain yield of 4.1 t/ha, or approx. 9.0 t/ha total aboveground air-dry yield, was obtained on plots given no N for 19 years, with P and K supplies of 105 mg/kg AL-P2O5 and 128 mg/kg AL-K 2O. N fertilisation caused yield depression, leading to yield losses as high as 50% on P-deficient soil when N was applied at a rate of 300 kg/ha/year. No effect was observed for K. fertilisation. 3. In extremely dry years, under non-intensive farming conditions, without mineral fertilisation, grain sorghum could be competitive with maize on this type of soil, especially if the juicy stalks are used as fodder or for some other purpose. In comparison, in the same year maize gave a grain yield of 3-4 t/ha on the control plots of the long-term mineral fertilisation experiment at this location.

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KW - Mineral fertilisation

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