Abstract
Field experiments were conducted during 2003-04 to monitor the soil organic carbon and the nutrient uptake by pearl millet (Pennisetum glaucum L.) under different combinations of irrigation water and nitrogenous fertilizer treatments. In both the years, days of maturity increased with increase in nitrogen doses in irrigated plots. Application of Nitrogen induced higher leaf area index, but the difference in 80 and 120 kg N/ha levels were found to be significant. The increase in biomass accumulation was faster in irrigated plots than the rainfed and it increased with N treatment. The 1000-grain weight increased significantly with successive N levels, but the increment was pronounced only up to 40 kg N/ha in rainfed and up to 120 kg N/ha in irrigated treatment. Grain yield varied significantly with nitrogen application rates as compared to those plots that received no N. Mean yield in irrigated plots was also significantly higher than the unirrigatd plots. Nitrogen content in pearl millet grain was more in irrigated plots and also increased with N doses but no such relations could be established with irrigation as well as nitrogen doses for P and K, while N, P and K content in straw did not show any statistical relationship with either irrigation or fertilizer treatments. During both the rainy (kharif) seasons 2003 and 2004, the soil organic carbon increased at harvest in comparison to that at sowing of the crop, in surface (0-15 cm) and subsurface (15-30 cm) layers; whereas no change or reduction in soil organic carbon content was found in the deeper (30―45 and 45-60 cm) layers. The increments were more in irrigated plots (1 1 ), as compared to rainfed plots (I o ), possibly due to more use efficiency of the fertilizers.
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Claims 14
Claim · model-written summary
Nitrogen increased days to maturity in irrigated plots.
- Taxon
- pearl millet
Cenchrus americanust0 - Treatment
- increase in nitrogen dosese0
- Outcome
- days of maturitye0
- Direction
- increasede0
- Setting
- irrigated plotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“days of maturity increased with increase in nitrogen doses in irrigated plots”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Nitrogen increased leaf area index, with a significant difference between 80 and 120 kg N/ha.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- Nitrogene0
- Outcome
- leaf area indexe0
- Direction
- highere0
- Comparator
- 80 and 120 kg N/ha levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Nitrogen induced higher leaf area index, but the difference in 80 and 120 kg N/ha levels were found to be significant”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Biomass accumulation was faster in irrigated than rainfed plots.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- irrigated plotse0
- Outcome
- biomass accumulatione0
- Direction
- fastere0
- Comparator
- rainfede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in biomass accumulation was faster in irrigated plots than the rainfed”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Biomass accumulation increased with nitrogen treatment.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- N treatmente0
- Outcome
- biomass accumulatione1
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it increased with N treatment”
t0“pearl millet (Pennisetum glaucum)”
e1“The increase in biomass accumulation was faster in irrigated plots than the rainfed and it increased with N treatment”
Claim · model-written summary
Successive nitrogen levels significantly increased 1000-grain weight, with pronounced increments up to 40 kg N/ha in rainfed plots and 120 kg N/ha in irrigated plots.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- successive N levelse0
- Outcome
- 1000-grain weighte0
- Direction
- increasede0
- Qualifier
- up to 40 kg N/ha in rainfed and up to 120 kg N/ha in irrigated treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 1000-grain weight increased significantly with successive N levels, but the increment was pronounced only up to 40 kg N/ha in rainfed and up to 120 kg N/ha in irrigated treatment”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Nitrogen application significantly increased grain yield versus no nitrogen.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- nitrogen application ratese0
- Outcome
- Grain yielde0
- Comparator
- plots that received no Ne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield varied significantly with nitrogen application rates as compared to those plots that received no N”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Mean grain yield was significantly higher in irrigated than unirrigated plots.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- irrigated plotse0
- Outcome
- Mean yielde0
- Direction
- highere0
- Comparator
- unirrigatd plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean yield in irrigated plots was also significantly higher than the unirrigatd plots”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Grain nitrogen content was higher in irrigated plots.
- Taxon
- pearl milletCenchrus americanuse0
- Treatment
- irrigated plotse0
- Outcome
- Nitrogen content in pearl millet graine0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen content in pearl millet grain was more in irrigated plots”
Claim · model-written summary
Grain nitrogen content increased with nitrogen dose.
- Taxon
- pearl milletCenchrus americanuse0
- Treatment
- N dosese0
- Outcome
- Nitrogen content in pearl millet graine0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen content in pearl millet grain was more in irrigated plots and also increased with N doses”
Claim · model-written summary
Grain phosphorus and potassium showed no established relation to irrigation or nitrogen doses.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- irrigation as well as nitrogen dosese0
- Outcome
- P and Ke0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no such relations could be established with irrigation as well as nitrogen doses for P and K”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Straw nitrogen, phosphorus and potassium content had no statistical relationship with irrigation or fertilizer treatments.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- irrigation or fertilizer treatmentse0
- Outcome
- N, P and K content in strawe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N, P and K content in straw did not show any statistical relationship with either irrigation or fertilizer treatments”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Soil organic carbon increased from sowing to harvest in surface and subsurface layers.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- soil organic carbone0
- Direction
- increasede0
- Qualifier
- surface (0-15 cm) and subsurface (15-30 cm) layerse0
- Comparator
- at sowing of the crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the soil organic carbon increased at harvest in comparison to that at sowing of the crop, in surface (0-15 cm) and subsurface (15-30 cm) layers”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Soil organic carbon did not increase in deeper layers.
- Taxon
- pearl milletCenchrus americanust0
- Outcome
- soil organic carbon contente0
- Direction
- no change or reductione0
- Qualifier
- deeper (30―45 and 45-60 cm) layerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no change or reduction in soil organic carbon content was found in the deeper (30―45 and 45-60 cm) layers”
t0“pearl millet (Pennisetum glaucum)”
Claim · model-written summary
Soil organic carbon increments were greater under irrigation than rainfed conditions.
- Taxon
- pearl milletCenchrus americanust0
- Treatment
- irrigated plotse0
- Outcome
- soil organic carbone1
- Direction
- moree0
- Comparator
- rainfed plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increments were more in irrigated plots (1 1 ), as compared to rainfed plots (I o )”
t0“pearl millet (Pennisetum glaucum)”
e1“the soil organic carbon increased at harvest”
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