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Zilio M.,Programa de Pos Graduacao em Producao Vegetal | Coelho C.M.M.,Federal University of Santa Catarina | Souza C.A.,CAV DEAGRO | Santos J.C.P.,CAV UDESC | Miquelluti D.J.,CAV UDESC
Revista Ciencia Agronomica | Year: 2011

The objective this work was to verify the relative contribution between yield components and yield of the common bean landraces cultivars. The experiment was carried out with twenty six genotypes of beans under field conditions in the 2008/2009 growing season using randomized block design with three repetitions, where evaluated the yields components and yield in the in the following Santa Catarina countries: Anchieta, Joaçaba and Lages. The unvaried variance test was used and the cropping places were compared by Tukey test and, Scott-Knott test to grouping genotypes. The correlations were done by path analysis. The genotypes evaluated performed differently according to the environment where the tests were done to all characters, with exception to the mass of 100 grains. The indirect selection by mass of 100 grains to yield component isn't a good alternative to genetic progress. But, the selection to pod number per plant, grain per pod and pod loci number can contribute to yield selection. Source


Da Silva A.G.,University of Rio Verde | Neto A.H.,Programa de Pos Graduacao em Producao Vegetal | Teixeira I.R.,State University of Goias | Da Costa K.A.P.,Brazilian National Council for Scientific and Technological Development | Braccini A.L.,State University of Maringa
Semina:Ciencias Agrarias | Year: 2015

The sorghum and brachiaria intercropping shows potential to produce grains and straw. However, few studies have been made to select cultivars for the intercropping conditions, in off-season cultivation, at Central-West region of Brazil. The objective of this study was to select sorghum and brachiaria cultivars intercropped in the row, in off-season cultivation, to obtain grains and straw. The experimental was carried out at Rio Verde-GO in the 2010 off-season cultivation. The experimental design was the randomized blocks, in scheme factorial 2x5+2+5 corresponding to two cultivars of grain sorghum (BRS 310 and DKB 599) intercropped in the row with five brachiaria cultivars (Brachiaria brizantha cv. Xaraés, Marandu and Piatã, B. decumbens and B. ruziziensis). Additionally, it was carried out seven additional treatments related to monocultures of the two sorghum cultivars and five of the brachiaria. The results demonstrated that the sorghum BRS 310 intercropped with B. ruziziensis and B. brizantha Xaraés provided higher total crude protein, dry matter (straw) and grain yields, being the same fact observed for the DKB 599 intercropped with the B. decumbens. The hybrid DKB 599 showed higher yield potential, but also greater sensitivity to competition with the brachiaria plants. In certain treatments, the brachiaria crop caused reduction of sorghum stand, and thus, decreased the grain yield. The grain sorghum and brachiaria intercropping, in off-season cultivation, shows to be a viable growth technique to produce grains and straw in the Central-West region of Brazil. Source


Zanotti R.F.,Federal University of Espirito Santo | Lopes J.C.,CCA | Motta L.B.,Federal University of Espirito Santo | De Freitas A.R.,Programa de Pos Graduacao em Producao Vegetal | Mengarda L.H.G.,Federal University of Espirito Santo
Semina:Ciencias Agrarias | Year: 2013

Papaya fruit (Carica papaya) is a species of great commercial agriculture importance. Although has a saline stress sensitivity. Potassium nitrate (KNO3) and nitric oxide are substances that inducing saline stress tolerance. The aim of this study was evaluate the effects of sildenafil citrate (SC) and KNO3 on the papaya seeds germination of under saline stress. Papaya seeds of hybrids Calimosa and JS12x Waimanalo were immersed in distilled water or KNO3 solutions and SC and followed germinated in distilled water or NaCl solution -0.3 MPa. Seeds of the hybrid JS12x Waimanalo had higher percentages of germination and normal seedlings. The controls of the two hybrids did not show saline stress tolerance during germination. Seeds of the hybrid JS12x Waimanalo, when treated with KNO3 or SC showed stress tolerance. The growth regulators tested were important in the induction of saline tolerance in papaya seeds. Source


Da Silva A.G.,University of Rio Verde | Da Silva A.G.,Brazilian National Council for Scientific and Technological Development | De Moraes L.E.,UniRV | Neto A.H.,Programa de Pos Graduacao em Producao Vegetal | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2013

The intercropping has been shown as effective cultivation technique to rise the production from the simultaneous cultivation of different species in the same area. Thus, the objective of this research was to evaluate, in off-season cultivation, the forage and grains production in off-season by interrow intercropping of grain sorghum with brachiaria in two sowing depths. The experiment was carried out in field in Rio Verde-GO, on March 5, 2009. The experimental design used was the randomized blocks in factorial scheme 2x3+1+3 with four replications, corresponding to two brachiaria sowing depths (2 and 10 cm), three brachiaria species (Brachiaria decumbens, B. brizantha cv. Marandú and B. ruziziensis) and four additional treatments of sorghum and three brachiaria species (monocultures). The grain sorghum used was the DKB 599. The evaluation of the brachiaria forage yield was made up at 98 days after the sorghum harvest. The interrow intercropping of sorghum with Brachiaria ruziziensis, regardless the sowing depth, and with B. brizantha, sowed in 2 cm depth, did not cause reductions in grain yield. The interrow intercropping with brachiaria possible increases in dry matter and crude protein total yields of the forage. The sorghum and brachiaria intercropping in off-season cultivation shows to be a promising cultivation technique to produce grains and forage (dry matter and crude protein) in cerrado conditions. Source


Paes H.M.F.,Producao Vegetal | Esteves B.S.,Programa de Pos Graduacao em Producao Vegetal | De Sousa E.F.,Producao Vegetal
Revista Ciencia Agronomica | Year: 2012

This study was carried out to describe the water needs of okra at each stage of its development, through the determination of crop evapotranspiration and crop coefficient (kc) providing subsidies to irrigated agriculture. The experiment was conducted at Station evapotranspirometers Universidade Estadual do Norte Fluminense Darcy Ribeiro in Campos State, Brazil. The cultivar used was the Santa Cruz 47, planted in a spacing of 0.25 mx 1.00 m in an area of 1024 m 2, irrigated by sprinkler. Area was done to determine the evapotranspiration and Kc, using a lysimeter 6 m2 with an electronic scale with weight change of 0,58 kg. The results allowed to quantify the crop evapotranspiration during the period under 314 mm. The Kc of okra in the first stage of development varied between values of 0.8 and 0.5, obtaining the average value of 0.68, the second stage ranged from 0.5 to 1.0, with a mean of 0,79,and the third stage Kc ranged from 1.0 to 0.3, the average being 0.54. Source

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