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Search Results: 1 - 10 of 295086 matches for " Mour?o Filho Francisco de Assis Alves "
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DRIS: concepts and applications on nutritional diagnosis in fruit crops
Mouro Filho, Francisco de Assis Alves;
Scientia Agricola , 2004, DOI: 10.1590/S0103-90162004000500015
Abstract: nutrition and fertilization are important factors in determining fruit yield and fruit quality. there are several methods for plant nutritional status diagnosis, among them, two are relevant and named as sufficiency range approach (sra) and diagnosis and recommendation integrated system (dris). this research reports the main concepts and applications of dris in nutritional diagnosis of fruit crops, comparing it with current nutritional diagnosis methods, indicating advantages and disadvantages, and possible limitations to be investigated.
DRIS: concepts and applications on nutritional diagnosis in fruit crops
Mouro Filho Francisco de Assis Alves
Scientia Agricola , 2004,
Abstract: Nutrition and fertilization are important factors in determining fruit yield and fruit quality. There are several methods for plant nutritional status diagnosis, among them, two are relevant and named as Sufficiency Range Approach (SRA) and Diagnosis and Recommendation Integrated System (DRIS). This research reports the main concepts and applications of DRIS in nutritional diagnosis of fruit crops, comparing it with current nutritional diagnosis methods, indicating advantages and disadvantages, and possible limitations to be investigated.
Crescimento inicial de laranjeira 'Valência' sobre dois porta-enxertos em fun??o da aduba??o nitrogenada no plantio
Girardi, Eduardo Augusto;Mouro Filho, Francisco de Assis Alves;
Revista Brasileira de Fruticultura , 2004, DOI: 10.1590/S0100-29452004000100032
Abstract: inicial growth of 'valencia' sweet orange budded on 'rangpur' lime and 'swingle' citrumelo was evaluated during the first year after planting, comparing the use of nitrogen soluble fertilizers (urea and ammonium nitrate) and slow-release fertilizer (sulfur coated urea scu) at 80,0 g n / plant. fertilizers were applied at four applications as soluble sources and once and twice a year as slow-release source, which was also evaluated at 22,2 and 50,0 g n / plant. biometric data included: height, trunk diameter, canopy diamenter, leaf chlorofyll concentration and leaf mineral nutrient concentration. 'swingle' citrumelo induced higher trunk diameter than 'rangpur' lime, 12 months after planting. sources, concentrations and application number of nitrogen did not affect vegetative growth of 'valencia' sweet orange budded on both rootstocks during the first year after planting.
Production of interstocked 'Pera' sweet orange nursey trees on 'Volkamer' lemon and 'Swingle' citrumelo rootstocks
Girardi, Eduardo Augusto;Mouro Filho, Francisco de Assis Alves;
Scientia Agricola , 2006, DOI: 10.1590/S0103-90162006000100002
Abstract: incompatibility among certain citrus scion and rootstock cultivars can be avoided through interstocking. 'pera' sweet orange (citrus sinensis l. osbeck) nursery tree production was evaluated on 'swingle' citrumelo (poncirus trifoliata (l.) raf x citrus paradisi macf) and 'volkamer' lemon (citrus volkameriana pasquale) incompatible rootstocks, using 'valencia' and 'hamlin' sweet oranges (citrus sinensis l. osbeck), 'sunki' mandarin (citrus sunki hort. ex tanaka), and 'cleopatra' mandarin (citrus reshni hort. ex tanaka) as interstocks. citrus nursery trees interstocked with 'pera' sweet orange on both rootstocks were used as control. 'swingle' citrumelo led to the highest interstock bud take percentage, the greatest interstock height and rootstock diameter, as well as the highest scion and root system dry weight. percentage of 'pera' sweet orange dormant bud eye was greater for plants budded on 'sunki' mandarin than those budded on 'valencia' sweet orange. no symptoms of incompatibility were observed among any combinations of rootstocks, interstocks and scion. production cycle can take up to 17 months with higher plant discard.
Production of interstocked 'Pera' sweet orange nursey trees on 'Volkamer' lemon and 'Swingle' citrumelo rootstocks
Girardi Eduardo Augusto,Mouro Filho Francisco de Assis Alves
Scientia Agricola , 2006,
Abstract: Incompatibility among certain citrus scion and rootstock cultivars can be avoided through interstocking. 'Pera' sweet orange (Citrus sinensis L. Osbeck) nursery tree production was evaluated on 'Swingle' citrumelo (Poncirus trifoliata (L.) Raf x Citrus paradisi Macf) and 'Volkamer' lemon (Citrus volkameriana Pasquale) incompatible rootstocks, using 'Valencia' and 'Hamlin' sweet oranges (Citrus sinensis L. Osbeck), 'Sunki' mandarin (Citrus sunki Hort. ex Tanaka), and 'Cleopatra' mandarin (Citrus reshni Hort. ex Tanaka) as interstocks. Citrus nursery trees interstocked with 'Pera' sweet orange on both rootstocks were used as control. 'Swingle' citrumelo led to the highest interstock bud take percentage, the greatest interstock height and rootstock diameter, as well as the highest scion and root system dry weight. Percentage of 'Pera' sweet orange dormant bud eye was greater for plants budded on 'Sunki' mandarin than those budded on 'Valencia' sweet orange. No symptoms of incompatibility were observed among any combinations of rootstocks, interstocks and scion. Production cycle can take up to 17 months with higher plant discard.
Mudas de laranjeira 'valência' sobre dois porta-enxertos e sob diferentes manejos de aduba??o
Girardi, Eduardo Augusto;Mouro Filho, Francisco de Assis Alves;Alves, André Siqueira Rodrigues;
Revista Brasileira de Fruticultura , 2010, DOI: 10.1590/S0100-29452010005000082
Abstract: the fertilizer program is a major practice for screened citrus nursery tree production. the effect of six fertilizer programs commercially recommended was evaluated on the production of 'valência' sweet orange [citrus sinensis (l.) osbeck] nursery trees budded on rootstocks 'rangpur' lime (citrus limonia osbeck) and 'swingle' citrumelo [citrus paradisi macf. x poncirus trifoliata (l.) raf.]. experimental work was carried out from rootstock transplant until 180 days after budding, in a citrus nursery in conchal, sp, brazil. fertilizer managements consisted of two soluble fertilizers solutions applied isolated, soluble fertilizers associated with control release fertilizer and control release fertilizer alone. experimental design was factorial 2 x 6 (rootstock x fertilizer program) in randomized blocks, with three replicates and 12 plants in the unit. 'rangpur' lime induced higher vigor to the scion. plant growth was similar among fertilizer managements, even though nutrient amounts applied varied significantly. therefore, nurserymen can choose the most practical or economic management depending on local conditions.
Fun??es e ordem da raz?o dos nutrientes no estabelecimento de normas DRIS em laranjeira 'Valência'
Mouro Filho, Francisco de Assis Alves;Azevedo, Jo?o Carlos;Nick, Josef Andreas;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000200010
Abstract: diagnosis and recommendation integrated system (dris) has been a useful tool for nutrient diagnosis of several crops. this research aimed to establish adequate norms for dris through three methods (beaufils, elwali & gascho and jones) to calculate ratio functions and two criteria (letzsch and nick) for choosing the ratio order of the nutrients for 'valencia' sweet orange budded on three rootstocks, in mogi gua?ú, sp, brazil. data referred to yield, rootstock and concentrations of n, p, k, ca, mg, s, fe, mn, cu, zn and b in leaves of non fruiting terminals, for each plot, were processed for 1994 through 1998. nutritional balance index (nbi) was calculated by the average of the sum (disregarding the sign) of all nutritional index values and dry matter index. dris and nbi indexes were calculated and the r2 values (yield related to nbi) were obtained for each calculation method. dris calculation method of the ratio function, recommended by jones, presented better correlation with yield. the criterion for choosing the ratio order of the nutrients recommended by nick was more efficient. specific populations, with reduced number of observations, standardized by rootstock and referred to one or two sampling years were more efficient data for calculation of dris norms.
DRIS norms for 'Valencia' sweet orange on three rootstocks
Mouro Filho, Francisco de Assis Alves;Azevedo, Jo?o Carlos;
Pesquisa Agropecuária Brasileira , 2003, DOI: 10.1590/S0100-204X2003000100012
Abstract: diagnosis and recommendation integrated system (dris) applies nutrient ratios instead of the isolated concentration values of each nutrient in interpretation of tissue analysis. the objectives of this research were to establish adequate dris norms for 'valencia' sweet orange irrigated commercial groves budded on three rootstocks and correlate indexes of nutrition balance with yield. experiments were conducted in s?o paulo state, brazil. rootstocks rangpur lime, caipira sweet orange, and poncirus trifoliata, with more than six years old and yield above 40 ton ha-1 were utilized. data referred to yield, tree spacing, rootstock and foliar concentrations of n, p, k, ca, mg, s, fe, mn, cu, zn, and b in non fruiting terminals for each grove were processed for the years 1994 through 1998. dris indexes were calculated by nick criterion for choosing the ratio order of the nutrients and jones calculation method of the ratio functions. indexes of nutritional balance calculated from dris norms presented high correlation with yield for the three scion/rootstock combinations. dris norms defined in this research are valid, since leaf sampling is done on non fruiting terminals and the grove is irrigated.
Fun es e ordem da raz o dos nutrientes no estabelecimento de normas DRIS em laranjeira 'Valência'
Mouro Filho Francisco de Assis Alves,Azevedo Jo?o Carlos,Nick Josef Andreas
Pesquisa Agropecuária Brasileira , 2002,
Abstract: O sistema integrado de diagnose e recomenda o DRIS (Diagnosis and Recommendation Integrated System) tem sido uma boa alternativa para a avalia o do estado nutricional de diversas culturas. O objetivo deste trabalho foi calcular índices DRIS mediante o uso de três métodos (Beaufils, Elwali & Gascho e Jones) de cálculo das fun es das raz es dos nutrientes e de dois critérios (Letzch e Nick) para a escolha da ordem da raz o dos nutrientes, em pomares comerciais irrigados de laranjeira 'Valência'. Informa es sobre a produtividade, porta-enxerto e teor de N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn e B em folhas de ramos n o-frutíferos de cada talh o foram processadas nos anos de 1994 a 1998. O índice de balan o nutricional (IBN) foi calculado pela média da soma dos valores em módulo dos índices nutricionais e do índice de matéria seca. Os índices DRIS e IBN foram calculados e os valores de r2 (produtividade em fun o de IBN) foram obtidos para cada método. O método Jones para cálculo do DRIS apresentou melhor correla o com a produtividade, e o critério Nick mostrou-se mais eficiente na escolha da ordem da raz o dos nutrientes. Popula es específicas, com pequeno número de observa es, padronizadas quanto ao porta-enxerto e referentes a um ou dois anos de amostragem foliar e produ o foram bancos de dados eficientes para a obten o das normas DRIS.
DRIS norms for 'Valencia' sweet orange on three rootstocks
Mouro Filho Francisco de Assis Alves,Azevedo Jo?o Carlos
Pesquisa Agropecuária Brasileira , 2003,
Abstract: Diagnosis and Recommendation Integrated System (DRIS) applies nutrient ratios instead of the isolated concentration values of each nutrient in interpretation of tissue analysis. The objectives of this research were to establish adequate DRIS norms for 'Valencia' sweet orange irrigated commercial groves budded on three rootstocks and correlate indexes of nutrition balance with yield. Experiments were conducted in S o Paulo State, Brazil. Rootstocks Rangpur lime, Caipira sweet orange, and Poncirus trifoliata, with more than six years old and yield above 40 ton ha-1 were utilized. Data referred to yield, tree spacing, rootstock and foliar concentrations of N, P, K, Ca, Mg, S, Fe, Mn, Cu, Zn, and B in non fruiting terminals for each grove were processed for the years 1994 through 1998. DRIS indexes were calculated by Nick criterion for choosing the ratio order of the nutrients and Jones calculation method of the ratio functions. Indexes of nutritional balance calculated from DRIS norms presented high correlation with yield for the three scion/rootstock combinations. DRIS norms defined in this research are valid, since leaf sampling is done on non fruiting terminals and the grove is irrigated.
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