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Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:29:04Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:48:24Z : No. of bitstreams: 1 2-s2.0-84880712802.pdf: 166293 bytes, checksum: f303c9c2413928624289311d24ada9c0 (MD5) Made available in DSpace on 2014-05-27T11:29:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-05-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The interest in crambe (Crambe abyssinica) cultivation in Brazil is on the rise, whereas information on the nutrient requirements for this crop is scarce. The objective of this work was to evaluate the effect of nitrogen-phosphorus-potassium (N-P2O5-K2O formula 8:28:16) fertilization (0, 150, and 300 kg ha-1) on crambe shoot biomass production, grain and oil yields, and nutrient extraction and exportation in the second growing season after soybean. The experiment with a Haplorthox (Dystroferric Red Latosol) was carried out for two years in Botucatu, São Paulo State, Brazil. A randomized complete block design with eight replications was used. Fertilization with NPK at sowing increased the shoot biomass production, grain yield, grain oil content, as well as nutrient extraction and exportation at harvest. In the fertilized treatments, the average amounts of nutrients extracted per hectare were 91 kg K, 71 kg N, 52 kg Ca, 9.4 kg P, 9.4 kg Mg, 7.9 kg S, 2,348 g Fe, 289 g Zn, 135 g Mn, and 18.2 g Cu; while the average values of nutrient exportation per hectare were 54 kg N, 20 kg K, 12.3 kg Ca, 10 kg P, 6.6 kg S, 3.2 kg Mg, 365 g Zn, 60 g Fe, 50 g Mn, and 7.3 g Cu, with NPK fertilizer application. Department of Crop Science College of Agricultural Sciences São Paulo State University - FCA/ UNESP, P.O. Box 37, CEP 18610-307 Botucatu (SP) FCA/UNESP Department of Crop Science FCA/UNESP Department of Crop Science College of Agricultural Sciences São Paulo State University - FCA/ UNESP, P.O. Box 37, CEP 18610-307 Botucatu (SP) FCA/UNESP Department of Crop Science FCA/UNESP

Made available in DSpace on 2022-04-29T02:43:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 It is necessary to establish adequate row spacings and plant populations for recently developed short height castor (Ricinus communis L.) cultivars. This work aimed to evaluate the growth, yield components, and yield of short castor cultivar IAC 2028 as affected by row spacing and plant population, in summer cropping season. The experiments were carried out in 2007/08 and 2008/09 cropping seasons, in Botucatu County, São Paulo State, Brazil. A randomized complete block design in a split-plot scheme with four replications was used. Treatments assigned to plots were four row spacing (0.45, 0.60, 0.75, and 0.90m) and subplots were assigned to four levels of plant populations (25000, 40000, 55000, and 70000 plants/ha). The increase of plant population decreased plants survival rate, shoot dry weight, stem diameter, number of racemes per plant, number of fruits per raceme, and 100-grains weight. In higher plant populations, the best arrangement of plants, provided by the narrower row spacing (0.45m), promoted higher grain and oil yields. Increasing plant population increased grain and oil yields only when was used the narrower row spacing. Faculdade de Ciências Agronômicas (FCA) Universidade Estadual Paulista (UNESP) Programa de Pós-graduação em Agronomia-Agricultura FCA/UNESP FCA/UNESP Departamento de Produção Vegetal-Agricultura FCA/UNESP, Caixa Postal 237, CEP 18603-970 Botucatu-SP Faculdade de Ciências Agronômicas (FCA) Universidade Estadual Paulista (UNESP) Programa de Pós-graduação em Agronomia-Agricultura FCA/UNESP FCA/UNESP Departamento de Produção Vegetal-Agricultura FCA/UNESP, Caixa Postal 237, CEP 18603-970 Botucatu-SP

Made available in DSpace on 2013-08-12T18:26:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Made available in DSpace on 2013-09-30T19:17:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T15:32:19Z No. of bitstreams: 0 Made available in DSpace on 2014-05-20T15:32:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01 It is necessary to establish adequate row spacings and plant populations for recently developed short height castor (Ricinus communis L) cultivars. This work aimed to evaluate the growth, yield components, and yield of short castor cultivar IAC 2028 as affected by row spacing and plant population, in summer cropping season. The experiments were carried out in 2007/08 and 2008/09 cropping seasons, in Botucatu County, São Paulo State, Brazil. A randomized complete block design in a split-plot scheme with four replications was used. Treatments assigned to plots were four row spacing (0.45, 0.60, 0.75, and 0.90m) and subplots were assigned to four levels of plant populations (25000, 40000, 55000, and 70000 plants/ha). The increase of plant population decreased plants survival rate, shoot dry weight, stem diameter, number of racemes per plant, number of fruits per raceme, and 100-grains weight. In higher plant populations, the best arrangement of plants, provided by the narrower row spacing (0.45m), promoted higher grain and oil yields. Increasing plant population increased grain and oil yields only when was used the narrower row spacing. UNESP, FCA, BR-18603970 Botucatu, SP, Brazil Univ Estadual Paulista UNESP, FCA, São Paulo, Brazil UNESP, FCA, BR-18603970 Botucatu, SP, Brazil Univ Estadual Paulista UNESP, FCA, São Paulo, Brazil