Abstract
A field experiment was conducted to determine the effects of varying levels of K and Mg fertilization on the yield, value, and chemical composition of burley tobacco (Nicotiana tabacum L. cv. Ky-14) leaves and smoke. Potassium was applied at rates of 0,112, 224, and 448 kg K/ha as K 2 SO 4 and KNO 3 , and Mg was applied at rates of 0, 56, 112 and 224 kg Mg/ha as MgO. Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control. Additional increases in market value were observed where 224 and 448 kg K/ha were applied. Magnesium did not significantly affect leaf yield and market value; there was no Mg × K interaction for these characters. Potassium fertilization reduced protein-N, total volatile nitrogenous bases (TVNB), amino-N, Ca, and Mg contents of leaf by 12, 10, 25, 23, and 32%, respectively, from the control when applied at the rate of 448 kg K/ha. In contrast, K fertilization increased leaf K and Mn contents 5.6- and 1.2-fold, respectively. Magnesium application depressed leaf amino-N content and increased Mg content. Total particulate matter (TPM), nicotine, and gas phase cyanide delivered from all-burley cigarettes were decreased by 24, 7, and 50% from the control when plots were supplied with 448 kg K/ha. However, the gas phase aldehyde content of the smoke was increased by K application. Magnesium fertilization had no measurable effects on the chemical composition of burley tobacco smoke.
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Claims 19
Claim · model-written summary
Potassium at 112 kg K/ha increased cured leaf yield about 12% over control.
Verbatim
e0“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 112 kg K/ha increased market value about 12% over control.
Verbatim
e0“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Higher potassium rates further increased market value.
Verbatim
e0“Additional increases in market value were observed where 224 and 448 kg K/ha were applied”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Magnesium did not significantly affect leaf yield and market value.
Verbatim
e0“Magnesium did not significantly affect leaf yield and market value”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
There was no magnesium by potassium interaction for leaf yield and market value.
Verbatim
e0“there was no Mg × K interaction for these characters”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced protein-N by 12%.
Verbatim
e0“Potassium fertilization reduced protein-N, total volatile nitrogenous bases (TVNB), amino-N, Ca, and Mg contents of leaf by 12, 10, 25, 23, and 32%, respectively, from the control when applied at the rate of 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced TVNB by 10%.
Verbatim
e0“Potassium fertilization reduced protein-N, total volatile nitrogenous bases (TVNB), amino-N, Ca, and Mg contents of leaf by 12, 10, 25, 23, and 32%, respectively, from the control when applied at the rate of 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced amino-N by 25%.
Verbatim
e0“Potassium fertilization reduced protein-N, total volatile nitrogenous bases (TVNB), amino-N, Ca, and Mg contents of leaf by 12, 10, 25, 23, and 32%, respectively, from the control when applied at the rate of 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced calcium by 23%.
Verbatim
e0“Potassium fertilization reduced protein-N, total volatile nitrogenous bases (TVNB), amino-N, Ca, and Mg contents of leaf by 12, 10, 25, 23, and 32%, respectively, from the control when applied at the rate of 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced magnesium by 32%.
Verbatim
e0“Potassium fertilization reduced protein-N, total volatile nitrogenous bases (TVNB), amino-N, Ca, and Mg contents of leaf by 12, 10, 25, 23, and 32%, respectively, from the control when applied at the rate of 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium raised leaf K content 5.6-fold.
Verbatim
e0“K fertilization increased leaf K and Mn contents 5.6- and 1.2-fold, respectively”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium raised leaf Mn content 1.2-fold.
Verbatim
e0“K fertilization increased leaf K and Mn contents 5.6- and 1.2-fold, respectively”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Magnesium depressed leaf amino-N content.
Verbatim
e0“Magnesium application depressed leaf amino-N content and increased Mg content”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Magnesium raised leaf Mg content.
Verbatim
e0“Magnesium application depressed leaf amino-N content and increased Mg content”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced smoke particulate matter by 24%.
Verbatim
e0“Total particulate matter (TPM), nicotine, and gas phase cyanide delivered from all-burley cigarettes were decreased by 24, 7, and 50% from the control when plots were supplied with 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced smoke nicotine by 7%.
Verbatim
e0“Total particulate matter (TPM), nicotine, and gas phase cyanide delivered from all-burley cigarettes were decreased by 24, 7, and 50% from the control when plots were supplied with 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium at 448 kg K/ha reduced gas phase cyanide by 50%.
Verbatim
e0“Total particulate matter (TPM), nicotine, and gas phase cyanide delivered from all-burley cigarettes were decreased by 24, 7, and 50% from the control when plots were supplied with 448 kg K/ha”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Potassium increased gas phase aldehyde in smoke.
Verbatim
e0“the gas phase aldehyde content of the smoke was increased by K application”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
Claim · model-written summary
Magnesium had no measurable effect on smoke chemistry.
Verbatim
e0“Magnesium fertilization had no measurable effects on the chemical composition of burley tobacco smoke”
e1“Potassium fertilization (112 kg K/ha) increased the cured leaf yield and its market value about 12% over the control”
t0“BURLEY TOBACCO LEAVES AND SMOKE”
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