Épocas de plantio da lentilha precoce em quatro regiões de minas gerais sowing dates for early lentil cultivars in four regions of minas gerais, brazil
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1999
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Abstract
Foram conduzidos cinco ensaios, todos irrigados, em quatro regiões de Minas Gerais: Viçosa, Leopoldina (Zona da Mata), Patos de Minas (Alto Paranaíba), Uberaba (Triângulo) e Janaúba (Norte), com o objetivo de determinar a melhor época de plantio da lentilha precoce. Em Viçosa, foram estudadas seis datas de plantio, de 15/3 a 30/5; em Leopoldina, quatro, de 7/4 a 10/6; em Uberaba e Patos de Minas, seis, de 17/2 a 2/6; e em Janaúba, cinco, de 16/5 a 3/8. O intervalo entre datas de plantio foi de, aproximadamente, 20 dias. No ensaio de Viçosa, foi utilizada a cultivar Precoz, plantada no espaçamento entre fileiras de 40 cm, com 30 sementes/m; nos outros ensaios, a Silvina, no espaçamento entre fileiras de 30 cm, com 50 sementes/m. Em geral, os maiores rendimentos foram alcançados quando o plantio foi feito em maio, principalmente na segunda quinzena. Em Viçosa, a lentilha também teve bom desempenho quando plantada na segunda quinzena de março. Em Leopoldina e Janaúba, os dois locais de temperaturas mais altas, o plantio no início de junho não prejudicou o rendimento, se comparado com o da segunda quinzena de maio. Nas épocas de plantio em que foram obtidos os maiores rendimentos, a lentilha precoce, após a emergência, levou entre 28 e 60 dias para iniciar o florescimento; e da emergência até a colheita, entre 92 e 112 dias. O maior rendimento médio foi alcançado em Leopoldina, quando o plantio foi realizado em 27/5: 1.644 kg/ha. O peso de 100 sementes da 'Silvina'variou de 5,5 a 6,3 gramas, quando o plantio foi feito em maio.
Trials were conducted in five municipalities of four regions of Minas Gerais State: Viçosa, Leopoldina (Zona da Mata), Patos de Minas (Alto Paranaíba), Uberaba (Triângulo) and Janaúba (Norte), in order to determine the best sowing date for early lentil. In Viçosa, six sowing dates were studied from 15th March to 30th May; in Leopoldina, four, from 7th April to 10th June; in Uberaba and Patos de Minas, six, from 17th February to 2nd June; in Janaúba, five, from 16th May to 3rd August. The interval between sowing dates was approximately 20 days. The cultivar Precoz planted with 30 seeds per meter and 40 cm between rows was used in the Viçosa trial. The cultivar Silvina with 50 seeds per meter and 30 cm between rows was used in the other trials. All trials were sprinkler irrigated. In general the highest yields were obtained when lentil was planted in May, particularly in the second half. In Viçosa, lentil also performed well when planted during the second half of March. In Leopoldina and Janaúba, the warmest locations, planting at the beginning of June did not impair lentil yield. From emergence to flowering, lentil took between 28 to 60 days, and from emergence to harvest, between 92 to 112 days, when planted during the best sowing dates. The highest yield was attained at Leopoldina when lentil was planted on 27 May: 1,644 kg/ha. One hundred-seed weight of cultivar Silvina varied from 5.5 to 6.3 grams when lentil was planted in May.
Trials were conducted in five municipalities of four regions of Minas Gerais State: Viçosa, Leopoldina (Zona da Mata), Patos de Minas (Alto Paranaíba), Uberaba (Triângulo) and Janaúba (Norte), in order to determine the best sowing date for early lentil. In Viçosa, six sowing dates were studied from 15th March to 30th May; in Leopoldina, four, from 7th April to 10th June; in Uberaba and Patos de Minas, six, from 17th February to 2nd June; in Janaúba, five, from 16th May to 3rd August. The interval between sowing dates was approximately 20 days. The cultivar Precoz planted with 30 seeds per meter and 40 cm between rows was used in the Viçosa trial. The cultivar Silvina with 50 seeds per meter and 30 cm between rows was used in the other trials. All trials were sprinkler irrigated. In general the highest yields were obtained when lentil was planted in May, particularly in the second half. In Viçosa, lentil also performed well when planted during the second half of March. In Leopoldina and Janaúba, the warmest locations, planting at the beginning of June did not impair lentil yield. From emergence to flowering, lentil took between 28 to 60 days, and from emergence to harvest, between 92 to 112 days, when planted during the best sowing dates. The highest yield was attained at Leopoldina when lentil was planted on 27 May: 1,644 kg/ha. One hundred-seed weight of cultivar Silvina varied from 5.5 to 6.3 grams when lentil was planted in May.
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| Authors | ;Rogério Faria Vieira;Maria Aparecida Vilela de Resende;Clibas Vieira;Rodrigo Ticle Ferreira |
| Journal | proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006 |
| Year | 1999 |
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