RESUMO
A field experiment was conducted to find out the "Effect of potassium on the growth and yield of different varieties of Mustard (Brassica juncea L.) under Poplar (Populus deltoides) based agroforestry system" at Forestry Nursery, the research farm of the College of Forestry, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, U.P., India. Experiment was laid out in randomized block design with 3 different varieties of Mustard viz. T59-Varuna, Pioneer 45s 42s, and Jugni in 3 replications and 5 levels of Potassium per variety (50% kg/ha), (75% kg/ha), (100% kg/ha), (125% kg/ha) and (150% kg/ha) as of total 15 treatments in all. The result shows that the application of increased levels of potassium fertilizers showed high growth and yield of Mustard. It was recorded from the application of potassium fertilizers in treatments applied with (MOP @ 150% kg/ha) resulted in increased pre-harvest observation viz., plant height (cm), dry weight (g/plant), crop growth rate (g/m2/day) and increased relative growth rate (g/g/day). It was also concluded from the trail that the application of fertilizers in treatment with (MOP @ 150% kg/ha) was found in increasing post-harvest observations viz., number of siliqua/plants, number of seeds/siliquas, test weight (g), seed yield (t/ha), stover yield (t/ha), harvest index (%). Also, after the economic analysis, the returns as compared to investment were found to be more profitable.
RESUMO
This study aimed at verifying a previous patented fraud detection method of propolis.In accordance with the patented process,the chromatographic separation was achieved on a Kromasil 100-5C18 column (250 mm × 4.6 mm,5 tm) as mobile phrase A was methanol and mobile phrase B was water (0.5％ phosphoric acid) at the flow rate of 1 mL· min-1 for gradient elution.The detection wave length was 296 nm.Fraudpropolin A was taken as the reference,while the known sources of natural propolis were determined by HPLC.As a result,no fraudpropolin A was detected in the 134 sources of natural propolis at different types or from various origins.It was concluded that the patented process was sound in the fraud detection method of propolis.
RESUMO
The dialysis for three species of poplar stems apoplast was obtained by microdialysis method, and then the concentration of Na+, K+, Ca2+ in the dialysis sample was directly measured by graphite furnace atomic absorption spectrometry ( GF-AAS) . The flow rate of perfusate was 1μL/min and the cut-off molecular weight of probe was 30 kDa. The real-time and non-destructive test technique established for the detection of ion concentration could be applied in research of poplar biochemical physiology. The recovery of the proposed method was 95. 8%-103. 1%. The contents of sodium ion in Populus wutunensis, Populus simonii and Salix matsudana were 1034-1156 μg/L, 1493-1611 μg/L and 1586-1703 μg/L; potassium ion were 1012-1237 μg/L, 941-964 μg/L and 1095-1201 μg/L; calcium ion were 4976-5237 μg/L, 4786-5042 μg/L and 5893-6142 μg/L. The method could provide reliable data for the study of ion concentration changes of plant response to adapt to all kinds of external environment.
RESUMO
In this study, pulp production from the fast growing plant, poplar, was examined for organosolv pulping with or without catalysts. In order to find the optimum cooking conditions, 18 different cooking experiments were carried out. The effect of ethanol ratio, cooking time as well as catalyst was studied. It was observed that even at lower temperature (90oC), cooking without catalyst was able to cause sufficient defiberization. It was seen that the increasing proportion of catalyst and cooking temperature resulted in an increased delignification. However in the case of using 0.02% acid catalyst pulp yield and viscosity were lowered to an unacceptable level. The most important cooking factors were found to be the proportion of acid catalyst. Furthermore, the delignification performance was found to be depending on the pH of the black liquor. In a result, the optimum pulp properties were obtained by cooking at 180oC for 90 min with 50 % ethanol mixture without catalyst. The pulp yield was noted as 44.49 %, viscosity was 892 cm2 g-1 and the kappa number was 67.
RESUMO
The DNA fragment was cloned from the cDNA that was synthesized using the RNA from Chinese white poplar and verified by sequencing This cDNA clone ,designated PtoCesA1, was 3215 bp long with an opening reading frame of 2934bp extending from nucleotides 52~2985.Comprision of the nucleotide sequence of PtoCesA1 with PtrCesA1 showed 97% identity.For construction of the PtoCesA1 binary expression vector, the BamHI site was made by synonymy mutation, the full length PtoCesA1 cDNA was subcloned into pBI121 between the BamHI site and XbaI site. The PtoCesA1 binary vector,containing PtoCesA1,was verified by digestion and PCR.
RESUMO
A composting technique was assessed to enhance efficiency in oyster mushroom substrate. Poplar sawdusts and by-product of winter mushroom added by 10% of rice bran were composted outdoors at 20degrees C to 28degrees C for 12 days. The duration of fermentation was shortened 3 days in fermented sawdust plot. The yield obtained from waste cotton substrate with fermented poplar sawdust was 742 g, whereas the yield from control 663 g. In addition, the substrate with by-product of winter mushroom was the most effective to composting. It was useful to apply the fermented sawdust and by-product to waste cotton for compost and sporophore production of oyster mushroom.