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| Teixeira,Luiz Antonio Junqueira; Quaggio,José Antonio; Cantarella,Heitor; Mellis,Estêvão Vicari. |
| A field experiment with pineapple (Smooth Cayenne) was carried out on an Ultisol located in the city of Agudos (22º30'S; 49º03'W), in the state of São Paulo, Brazil, with the objective of investigating the effects of rates and sources of potassium fertilizer on plant growth and fruit yield. The experiment was a complete factorial design (4x3) with four rates (0, 175, 350, and 700 kg ha-1 of K2O) and three combinations of K sources (100% KCl, 100% K2SO4, and 40% K2SO4 + 60% KCl). Plant growth and fruit yield were evaluated. Biomass accumulation of pineapple plants was impaired by chlorine added with potassium chloride. Fruit yield increased with potassium fertilization. At high rates of K application, fertilization with K2SO4 showed better results than with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Potassium chloride; Potassium sulphate; Ananas comosus; K. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000200035 |
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| Teixeira,Luiz Antonio Junqueira; Quaggio,José Antonio; Cantarella,Heitor; Mellis,Estêvão Vicari. |
| A field experiment was carried out on an Ultisol located at the city of Agudos (22º30'S; 49º03'W), in the state of São Paulo, Brazil, in order to determine the effects of rates and sources of potassium fertilizer on nutritional status of 'Smooth Cayenne' pineapple and on some soil chemical properties. The experiment was a complete factorial design with four rates (0, 175, 350, and 700 kg ha-1 of K2O) and three combinations of K sources (100% KCl, 100% K2SO4 and 40% K2SO4 + 60% KCl). Soil samples were taken from the depths 0-20 cm, 20-40 cm and 40-60 cm at planting and 14 months after. Nutritional status of pineapple plants was assessed by means of tissue analysis. Soil K availability increased with application of K fertilizer, regardless of K sources. Soil... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant analysis; Soil analysis; Potassium chloride; Potassium sulphate; Ananas comosus; K. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000200036 |
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| Korndorfer, Gaspar Henrique; Pereira, Hamilton Seron; Duarte, Ivaniele Nahas; Pinto, Laerte Rocha Neves; Fonseca, Luciano Ferreira da. |
| Thermopotash is a fertilizer with low solubility but has a release level compatible with plant demands. This study aimed to compare the effect of Thermopotash to that of KCl in sugarcane. Field work was conducted during two crop seasons, in a randomised block design. Treatments were applied to the bases of the furrows before planting the sugarcane, arranged in a 2 x 5 factorial design to evaluate two K sources (TK47 - Thermopotash, KCl - potassium chloride) at five levels of K (0, 50, 100, 150, and 200 kg ha-1 K2O). The variables analysed included leaf and soil K, Ca, Mg and Si, soil pH and productivity. The effects of the TK47 fertilizer on sugarcane stalk production were not initially superior to that of the soluble source, but over time, differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermopotash; Potassium chloride; Soil; Saccharum spp.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36399 |
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| Korndorfer, Gaspar Henrique; Pereira, Hamilton Seron; Duarte, Ivaniele Nahas; Pinto, Laerte Rocha Neves; Fonseca, Luciano Ferreira da. |
| Thermopotash is a fertilizer with low solubility but has a release level compatible with plant demands. This study aimed to compare the effect of Thermopotash to that of KCl in sugarcane. Field work was conducted during two crop seasons, in a randomised block design. Treatments were applied to the bases of the furrows before planting the sugarcane, arranged in a 2 x 5 factorial design to evaluate two K sources (TK47 - Thermopotash, KCl - potassium chloride) at five levels of K (0, 50, 100, 150, and 200 kg ha-1 K2O). The variables analysed included leaf and soil K, Ca, Mg and Si, soil pH and productivity. The effects of the TK47 fertilizer on sugarcane stalk production were not initially superior to that of the soluble source, but over time, differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermopotash; Potassium chloride; Soil; Saccharum spp.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/36399 |
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| Silva,Martha Freire da; Araújo,Eduardo Fontes; Silva,Laércio Junio da; Amaro,Hugo Tiago Ribeiro; Dias,Luiz Antônio dos Santos; Dias,Denise Cunha Fernandes dos Santos. |
| ABSTRACT Crambe is an oilseed plant whose oil is suitable for various industrial purposes, such as production of biodiesel, plastics, rubbers, and cosmetics. There are reports of the rusticity of this species and its potential for growth in arid and semi-arid environments, where water scarcity and soil salinity are common. However, studies regarding the tolerance of its seeds to these stresses and the physiological responses triggered during germination and seedling establishment under these conditions are incipient. The objective of this study was to evaluate the tolerance of crambe seeds to water deficit and salt stress during germination and early seedling development, as well as to investigate the role of antioxidant enzymes on tolerance to these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abiotic stresses; Antioxidant enzymes; Polyethylene glycol; Potassium chloride; Oilseed plant.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100201 |
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