Abstract
Abstract Effects of silicon (Si), supplied as calcium silicate (Ca-silicate) fertilizer on yield contributing parameters in sugarcane like chlorophyll content, gas exchange characteristics, leaf nutrient concentrations and its effects on soil fertility were evaluated. Seven rates of Ca-silicate (0, 20, 40, 60, 80, 120 and 150 g pot−1) were applied with traditional fertilizers and plants were grown in a greenhouse. The added Ca-silicate increased photosynthesis, transpiration and stomatal conductance significantly over the non-amended treatment. Leaf tissue contents of phosphorus (P), sulfur (S), calcium (Ca), magnesium (Mg) and sodium (Na) did not differ remarkably. With increasing silicate application, iron (Fe), copper (Cu), zinc (Zn) and manganese (Mn) contents significantly decreased in both leaf tissue and soil contents. Si amended treatments significantly increased yield in dry matter (26 to 70%) and in cane yield (30 to 66%) per pot over non-amended. The Si content up to 2.64% per dry mass was found in top visible dewlap (TVD) leaf tissues when amended with Ca-silicate fertilizer in our 12 months study. Soil pH, soil Si, and leaf tissues silicon content progressively increased with increasing rate of Ca-silicate. The available S, exchangeable potassium (K), Na, Ca and Mg increased more or less progressively as rate of Si application increased over non-amended. Nevertheless, the scanning electron microscopy (SEM) with energy dispersive x-ray analysis (EDAX) revealed that different rates of Ca-silicate responded differently in accumulation of Si and other elements in epidermal cells, silica cells and stomata cells. Keywords: leaf nutrientsoil fertilitychlorophyllgas exchange characteristicsscanning electron microscopeenergy dispersive X-ray analysis ACKNOWLEDGMENTS The authors are gratefully acknowledged to Mei Hua Yu and Jing Xian Wen, the department of Physics, Science and Technology, Guangxi University, Nanning 530004,China for operating the scanning electron microscope and energy dispersive X-ray analyzer.
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Claims 12
Claim · model-written summary
Calcium silicate significantly increased photosynthesis, transpiration and stomatal conductance.
Verbatim
e0“The added Ca-silicate increased photosynthesis, transpiration and stomatal conductance significantly over the non-amended treatment.”
t0“SUGARCANE”
Claim · model-written summary
Leaf P, S and Ca contents did not differ remarkably.
- Taxon
- SUGARCANEt0
- Treatment
- Ca-silicatee1
- Outcome
- phosphorus (P), sulfur (S), calcium (Ca)e0
- Direction
- did not differ remarkablye0
Not reportedComparator
Verbatim
e0“Leaf tissue contents of phosphorus (P), sulfur (S), calcium (Ca), magnesium (Mg) and sodium (Na) did not differ remarkably.”
t0“SUGARCANE”
e1“The added Ca-silicate increased photosynthesis, transpiration and stomatal conductance significantly over the non-amended treatment.”
Claim · model-written summary
Leaf Mg and Na contents did not differ remarkably.
- Taxon
- SUGARCANEt0
- Treatment
- Ca-silicatee1
- Outcome
- magnesium (Mg) and sodium (Na)e0
- Direction
- did not differ remarkablye0
Not reportedComparator
Verbatim
e0“Leaf tissue contents of phosphorus (P), sulfur (S), calcium (Ca), magnesium (Mg) and sodium (Na) did not differ remarkably.”
t0“SUGARCANE”
e1“The added Ca-silicate increased photosynthesis, transpiration and stomatal conductance significantly over the non-amended treatment.”
Claim · model-written summary
Increasing silicate significantly reduced Fe, Cu and Zn in leaves and soil.
- Taxon
- SUGARCANEt0
- Treatment
- increasing silicate applicatione0
- Outcome
- iron (Fe), copper (Cu), zinc (Zn)e0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“With increasing silicate application, iron (Fe), copper (Cu), zinc (Zn) and manganese (Mn) contents significantly decreased in both leaf tissue and soil contents.”
t0“SUGARCANE”
Claim · model-written summary
Increasing silicate significantly reduced Mn in leaves and soil.
- Taxon
- SUGARCANEt0
- Treatment
- increasing silicate applicatione0
- Outcome
- manganese (Mn) contentse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
e0“With increasing silicate application, iron (Fe), copper (Cu), zinc (Zn) and manganese (Mn) contents significantly decreased in both leaf tissue and soil contents.”
t0“SUGARCANE”
Claim · model-written summary
Silicon amendment increased dry matter yield by 26 to 70%.
Verbatim
e0“Si amended treatments significantly increased yield in dry matter (26 to 70%) and in cane yield (30 to 66%) per pot over non-amended.”
t0“SUGARCANE”
Claim · model-written summary
Silicon amendment increased cane yield by 30 to 66% per pot.
Verbatim
e0“Si amended treatments significantly increased yield in dry matter (26 to 70%) and in cane yield (30 to 66%) per pot over non-amended.”
t0“SUGARCANE”
Claim · model-written summary
Top visible dewlap leaves contained up to 2.64% silicon on a dry-mass basis after calcium silicate amendment.
Verbatim
e0“The Si content up to 2.64% per dry mass was found in top visible dewlap (TVD) leaf tissues when amended with Ca-silicate fertilizer in our 12 months study.”
t0“SUGARCANE”
Claim · model-written summary
Soil pH, soil silicon and leaf silicon increased with calcium silicate rate.
- Taxon
- SUGARCANEt0
- Treatment
- increasing rate of Ca-silicatee0
- Outcome
- Soil pH, soil Si, and leaf tissues silicon contente0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Soil pH, soil Si, and leaf tissues silicon content progressively increased with increasing rate of Ca-silicate.”
t0“SUGARCANE”
Claim · model-written summary
Available soil S and exchangeable K and Na increased with silicon application rate.
Verbatim
e0“The available S, exchangeable potassium (K), Na, Ca and Mg increased more or less progressively as rate of Si application increased over non-amended.”
t0“SUGARCANE”
Claim · model-written summary
Exchangeable soil Ca and Mg increased with silicon application rate.
Verbatim
e0“The available S, exchangeable potassium (K), Na, Ca and Mg increased more or less progressively as rate of Si application increased over non-amended.”
t0“SUGARCANE”
Claim · model-written summary
Calcium silicate rates differed in elemental accumulation in epidermal, silica and stomatal cells.
- Taxon
- SUGARCANEt0
- Treatment
- different rates of Ca-silicatee0
- Outcome
- accumulation of Si and other elements in epidermal cells, silica cells and stomata cellse0
- Direction
- differentlye0
Not reportedComparator
Verbatim
e0“different rates of Ca-silicate responded differently in accumulation of Si and other elements in epidermal cells, silica cells and stomata cells.”
t0“SUGARCANE”
The same questions in other papers
silicon atom · yield · Saccharum officinarum (sugarcane)Results differ
18 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
17 papers more in this group
See all 21 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.