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Evaluation of sources, doses and application schedules of nitrogen on drip-irrigated tomato Horticultura Brasileira
Marouelli,Waldir A; Souza,Ronessa B; Braga,Marcos B; Silva,Washington LC.
We aimed to establish strategies for nitrogen (N) fertilization on drip-irrigated determinate-growth-habit tomato, under Cerrado conditions of Central Brazil. Three field experiments were carried out in a randomized block design. In experiment I six N doses (0, 80, 160, 240, 320 and 400 kg ha-1 N) were tested, in experiment II six combinations of the N forms (nitric; ammonium; amide; 2/3 nitric + 1/3 ammonium; 2/3 nitric + 1/3 amide; and 1/3 nitric + 2/3 amide) were evaluated, and in experiment III the combination of three soil pre-plant fertilization fractions (0, 20 and 40%) was evaluated with two splitting schemes of the remaining N via fertigation (linear and adjusted N-uptake curve). SPAD chlorophyll index and N content were measured in the leaves of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum lycopersicon; Processing tomato; Determinate growth; Fertigation; Nutritional status; Economic analysis.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000300327
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Mapping and validation of molecular markers of genes Dt1 and Dt2 to determine the type of stem growth in soybean Agronomy
Vicente, Dorival; Schuster, Ivan; Lazzari, Fabiane; Paranzini, Jonas Pedro Dolfini; Oliveira, Marco Antonio Rott de; Prete, Cássio Egídio Cavenaghi.
The type of stem growth in soybean is a distinguishing feature of cultivars. The genes Dt1 and Dt2 affect the termination of the stem, and the types of growth are classified as determinate, semi-determinate and indeterminate. Phenotypic characterization of the type of growth is complex and is occasionally erroneously described. The objective of this study was to map and validate molecular markers to classify the type of soybean growth to facilitate the description of cultivars and genotypic selection. Two populations were used for mapping and validation of molecular markers F2:3: T 117 (semi-determinate growth type) x Igra RA 518 RR (indeterminate growth type) and CD 235RR (determinate growth type) x Igra RA 518 RR. The study demonstrates that the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Determinate growth; Semi-determinate growth; Indeterminate growth; SAM.
Ano: 2016 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/26216
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