Abstract
The aim of this study was to evaluate soil fertility amendment, stalk yield, sugar, bagasse, and trash yield as affected by surface application of dolomitic limestone and gypsum in green sugarcane ratoon. A factorial arrangement of four dolomitic limestone rates (0, 900, 1800, and 3600 kg ha-1) and two gypsum rates (0 and 1700 kg ha-1) was used in the experiment. The experiment was performed from October 2006 to October 2007, starting in the rainy season after the 2nd ratoon harvest of the variety SP813250 in a commercial green sugarcane plantation of the São Luiz Sugar Mill (47º25'33" W; 21º59'46", 627 m of altitude), located in Pirassununga, state of São Paulo, in southeast Brazil. After 12 months, the experiment was harvested, technological measurements of stalk yield were made, and soil samples were taken and analyzed. Gypsum acts as a subsurface conditioner thus contributing so the benefits of surface limestone application, on soil acidity correction, to reach deeper layers, allowing the development of the root system of plants in greater depth. However, application of gypsum may lead to leaching of Mg and K from the topsoil layers. The higher rates of lime in surface application provided acidity amendment and, consequently, increased soil fertility in the soil profile, and increased sugarcane stalk, sugar, bagasse, and trash yield.
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Claims 4
Claim · model-written summary
Gypsum helped the soil acidity correction from surface limestone reach deeper layers and allowed deeper root development.
Verbatim
e0“Gypsum acts as a subsurface conditioner thus contributing so the benefits of surface limestone application, on soil acidity correction, to reach deeper layers, allowing the development of the root system of plants in greater depth”
t0“sugarcane”
Claim · model-written summary
Gypsum application may leach Mg and K from topsoil.
Verbatim
e0“application of gypsum may lead to leaching of Mg and K from the topsoil layers”
t0“sugarcane”
Claim · model-written summary
Higher surface lime rates amended soil acidity and increased fertility through the soil profile.
- Taxon
- sugarcanet0
- Treatment
- higher rates of lime in surface applicatione0
- Outcome
- soil fertility in the soil profilee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The higher rates of lime in surface application provided acidity amendment and, consequently, increased soil fertility in the soil profile”
t0“sugarcane”
Claim · model-written summary
Higher surface lime rates increased sugarcane stalk, sugar, bagasse and trash yield.
- Taxon
- sugarcanee0
- Treatment
- higher rates of lime in surface applicatione0
- Outcome
- sugarcane stalk, sugar, bagasse, and trash yielde0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The higher rates of lime in surface application provided acidity amendment and, consequently, increased soil fertility in the soil profile, and increased sugarcane stalk, sugar, bagasse, and trash yield”
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See all 6 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.