Nitrogen and carbohydrate fractions in exclusive Tifton 85 and in pasture oversown with annual winter forage species [Fracionamento do nitrogênio e dos carboidratos de Tifton 85 exclusivo ou sobressemeado com forrageiras anuais]
Moreira A.L.,Agencia Paulista de Tecnologia dos Agronegocios |
Reis R.A.,Sao Paulo State University |
Simili F.F.,Polo Centro Leste |
de Miranda Gomide C.A.,EMBRAPA - Empresa Brasileira de Pesquisa Agropecuaria |
And 2 more authors.
Acta Scientiarum - Animal Sciences | Year: 2012
The experiment was undertaken at the Faculty of Agrarian and Veterinary Sciences (FCAV) Jaboticabal, São Paulo State, Brazil, during winter-spring-summer of 2001-2002, to determine the fractionation of nitrogen and carbohydrates in Tifton 85 (Cynodon dactylon Vanderyst x Cynodon nlemfuensis (L.) Pers), exclusively or oversown with winter annual forage species. Treatments comprised bristle oat (Avena strigosa Schreb), yellow oat (Avena byzantina C. Koch), triticale (X Triticosecale Wittmack), bristle oat + yellow oat, bristle oat + triticale, yellow oat + triticale, bristle oat + yellow oat + triticale seeded in Tifton 85 and sole crop (control). Experimental design was composed of completely randomized blocks with three replications. Fodder was cut 20 cm high (presence of winter forage) and 10 cm high (Tifton 85 pasture). Crude protein, total carbohydrate and the fractions of nitrogen compounds and carbohydrates were determined. Decrease was reported in the levels of chemical compounds in winter forage species and in Tifton 85 during the evaluation periods. The content of nitrogen compounds and carbohydrates varied widely during the evaluation period according to the morphological characteristics of grass species and botanical composition of pastures.
Lara R.I.R.,Polo Centro Leste |
Perioto N.W.,Sao Paulo State University
Revista Brasileira de Entomologia | Year: 2014
Seasonality of Pelecinus polyturator (Drury) (Hymenoptera, Pelecinidae) in the Atlantic Rainforest of São Paulo State, Brazil. A survey of the parasitoid wasp Pelecinus polyturator (Drury, 1773) (Hymenoptera, Pelecinidae) was carried out with five Malaise traps/area in five areas in the Atlantic Rainforest of São Paulo State, Brazil, between November 2009 and October 2010. The sampling effort in each locality amounted to 1,825 trap-days. Data were obtained from a total of 317 exemplars of P. polyturator, corresponding to 108 females and 209 males. The average sex ratio of the studied population was 0.52. The highest occurrence of P. polyturator was observed between November and March with frequency peak in January; about 95% of the specimens studied were captured at altitudes close to 1,000 m above sea level.
Suguino E.,Polo Centro Leste |
Martins A.N.,Polo Centro Oeste UPD Marilia |
Minami K.,University of Sao Paulo |
Narita N.,APTA |
Perdona M.J.,Sao Paulo State University
Revista Brasileira de Fruticultura | Year: 2011
Aiming to evaluate the effect of the pine bark substrate porosity on the development of the grumixama plant (Eugenia brasiliensis Lam.), an experiment was conducted in a greenhouse of the Escola Superior de Agricultura "Luiz de Queiroz"/USP, Piracicaba, Brazil. The treatments were: 100% ground pine bark without separation of particles; 100% pine bark of ≤ 0,1mm; 75% pine bark of ≤ 0,1mm + 25% between 0,1-4,0 mm; 50% of pine bark ≤ 0,1mm + 50% between 0,1-4,0 mm; 25% pine bark of ≤ 0,1mm + 75% between 0,1-4,0 mm and 100% pine bark of 0,1-4,0 mm. The evaluations (stem diameter, length and average dry weight of seedlings) were performed on the 90, 120 and 150th days after sowing. The low water absorption in the early stages and the low aeration of the roots promoted by the substrate, affect the development of the grumixama plant seedlings, that grow best when the total pore space of the substrate is less than 90% (v / v).
Perioto N.W.,Polo Centro Leste |
Perioto N.W.,Sao Paulo State University |
Lara R.I.R.,Polo Centro Leste
Brazilian Journal of Biology | Year: 2013
Tanaostigmodes horacioi sp. nov. Perioto & Lara (Hymenoptera, Tanaostigmatidae) from Brazil is described and illustrated. T. horacioi is the second included species in the insculptus species group of Tanaostigmodes Ashmead, 1896. A key to species of the insculptus group is provided.
Rosa Lara R.I.,Polo Centro Leste |
Perioto N.W.,Polo Centro Leste |
de Freitas S.,Sao Paulo State University
Pesquisa Agropecuaria Brasileira | Year: 2010
The objective of this work was to evaluate the diversity of Hemerobiidae (Neuroptera) in coffee and its relationships with Leucoptera coffeella, Coccus sp., Planococcus sp., Oligonychus ilicis, Brevipalpus phoenicis, Aphis spiraecola and Toxoptera aurantii. The specimens were collected in Cravinhos, São Paulo state, Brazil, between May 2005 and April 2007. The hemerobiids were collected with sweeping nets, and light and Möricke traps. Coffee leaves were collected for prey sampling. A total of 882 hemerobiids were obtained: Nusalala tessellata (467 individuals, 52.9% of the hemerobiids collected), Hemerobius bolivari (153, 17.3%), Megalomus impudicus (114, 12.9%), Sympherobius miranda (109, 12.4%), Megalomus rafaeli (30, 3.4%), Sympherrobus ariasi (6, 0.7%) and Nomerobius psychodoides (3, 0.3%). Occurrence of Nusalala tessellata and M. impudicus showed significant positive correlations with Coccus sp. presence; the same fact occurred to M. rafaeli and L. coffeella larvae with A. spiraecola, and H. bolivari with O. ilicis. The correlations were negative and significant between occurrence of S. miranda and O. ilicis, and between N. tessellata and L. coffeella larvae and O. ilicis. The correlations showed that Hemerobiidae generalist predators were favored by the constant supply of preys that occurred during the study period in the coffee crop.