germination period
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MAUSAM ◽  
2022 ◽  
Vol 46 (3) ◽  
pp. 275-278
Author(s):  
R. C. DUBEY ◽  
A. CHOWDHURY ◽  
J. D. KALE

ABSTRACT. The cotton yield of 12 years (1975-1987), for five districts in Vidarbha region of Maharashtra, was taken for statistical-regression study. It is found that the higher temperature during first fortnight of September, which is period of budding and flowering is favourable for better yield. The cooler nights during second fortnight of October, when the crop is generally in fruiting stage, also help in good increases in final cotton yield. Higher rainfall, dufing last week of June to first week of July, when the crop is in the germination period, causing logging, reduces the seedling and more number of rainy days in second fortnight of December hamper the bolll bursting and thus al1ecting the cotton yield adversely.  


Author(s):  
G. O. Ogunlakin ◽  
E. H. Onibokun ◽  
B. Fashogbon

Sorghum (red and white) were germinated for 24, 48, 72, and 96 h to determine the effect of germination on some functional and engineering properties of sorghum flour. The bulk density results for the red and white germinated sorghum are 0.620-0.673 g/cm3 and 0.477-0.620 g/cm3, respectively. Water absorption capacity values for the two samples are 116.630-125.970% and 81.643-98.293% while the oil absorption capacity ranged from 62.917 to 85.750% and 44.933 to 61.980%, respectively for the two samples. The dispersibility test for the two samples gave 85.67-87.33% and 83.00-84.67%. The swelling power at 55 °C are 2.54-2.67 and 2.70-3.26, at 75 °C, 3.62-4.68 and 3.85-4.56, and at 90 °C, 2.98-4.79 and 6.29-7.23, respectively for the two samples. For the engineering properties, the specific heat capacity ranged from 0.14 to 0.45 kJ/kg K and 0.12 to 0.14 kJ/kg K, thermal conductivity, from 0.55 to 1.67 W/mK and 1.01 to 1.24 W/mK and thermal diffusivity from 0.13 to 0.82 m2/s and 0.11 to 0.12 m2/s, respectively for red and white germinated sorghum flours. It can be concluded from this study that increased the values of bulk density, WAC, OAC, and dispersibility test of the two samples with the increase in germination period with the optimum germination period of 72 h. Engineering properties results indicated that germination had a beneficial effect on the thermal conductivity of the germinated red sorghum and the thermal conductivity and specific heat capacity of the white germinated sorghum with 96 h having the best result for both samples.


2021 ◽  
Vol 8 (4) ◽  
Author(s):  
Najib M Saminu ◽  
Yusuf Y Muhammad

The germination of seeds involves series of events during which mobilization and utilization of seed storage proteins occur. This study is aimed at determining the changes in total and fractions of seed storage protein in six bambaranut landraces during 96 hrs germination period. The study assessed the changes in seed storage protein content, storage protein profile, endopeptidase activity, free amino acids and gibberellic acid levels. Significant (p<0.05) decrease in total storage protein after 24 hrs, albumin from 48 hrs and globulin and glutelin after 72 hrs germination period were observed in the studied landraces. Prolamin showed significant (p<0.05) decrease after 48 hrs in all the landraces. Five peptide bands were detected in the six landraces with molecular weights corresponding to 97.4 kDa, 45 kDa, 29 kDa, 20.1 kDa and 18 kDa. Peptide bands with molecular weight of 97 kDa and 29 kDa decreased in intensity after 48 hrs of germination in four landraces. Free amino acids content significantly (p<0.05) increased following 24 hrs germination period in all the landraces. The activity of endopeptidase increased significantly (p<0.05), reaching maximum after 96 hrs germination. Significant (p<0.05) increase in gibberellic acid level throughout germination period was also observed. Although slow degradation rate of storage proteins was observed, there was variation in the rate at which storage protein and its fractions decreased among the bambaranut landraces during germination. This variation could be utilized towards obtaining improved bambaranut genotypes with better germination characteristics.


2021 ◽  
Vol 258 ◽  
pp. 04019
Author(s):  
N G Otamirzaev ◽  
R Ibodullaeva

The article identified 10 species of pests that damage rice plants during the season in rice agrobiocenosis. Leptestheria dahalacensis Sars, Apus concriformis Sh., Ostrinia nubilalis Hb, and Cephus pygmaeus have been reported to cause damage to rice grasses. A growth calendar has been developed. In the pest experiment during the rice germination period, Nurell D was found to contain 55% em.k. (Cypermethrin + chlorpriphos) - in the variant applied to 1.5 l/ha, the biological effectiveness of the drug is the highest for 14 days - 93.9%, in the variant treated with Tayshin 500 s.d.g (Clothianidin) -0.06 kg/ha for 14 days - 93.3%. In the experiment, the main pest Nurell D in the variant using 55% (1.5 l/ha) was 73.8 quintals of Iskandar variety, ie 13.2 quintals per hectare compared to the control, the new chemical Taishin 500 s.d.g. (0.06kg/ha) yielded 70.7 q/ha in the variant in which the chemical agent was used, and 10.1 additional yields were reported.


RICE GROWING ◽  
2021 ◽  
Vol 50 (1) ◽  
pp. 20-24
Author(s):  
E.Y. Gnennyy ◽  
◽  
G.L. Zelensky ◽  
M.A. Tkachenko ◽  
◽  
...  

2021 ◽  
Vol 258 ◽  
pp. 04032
Author(s):  
N Otamirzayev ◽  
R Ibodullayeva

In the article, 10 species of pests that damage rice plants during the season in the rice agrobiocenosis were identified. Leptestheria dahalacensis Sars, Apus concriformis Sh., Corn stalk Ostrinia nubilalis Hb, and Cephus pygmaeus have been reported to cause damage to rice grasses.A growth calendar has been developed. In the pest experiment during the rice germination period, biological effectiveness of the drug was the highest for 15 days, accounted for 93.9%, in the variant treated with Nurell D 55% em.k at rate of 1.5 l/ha. When the variant was treated with Tayshin 500 s.d.g (Clothianidin) at rate of 0.06 kg/ha, the effectives of the drug were 93.3% in 14 days. In the experiment, Nurell D 55% em.k (1.5 l/ha) was used against the main pests (0.06kg/ha) yielded 70.7 q/ha in the variant in which the chemical agent was used, and 10.1 additional yields were reported. The results showed that the yield of “Iskandar” variety was 73.8 q/ha, which was 13.2 q/ha more than the control, when Nurell D 55% em.k (1.5 l/ha) against the main pests was applied. Whereas new chemical Tayshin 500 s.d.g. (0.06kg/ha) was used in the variant, in which the yield was 70.7 q/ha, and it was more by 10.1 q/ha than the control variant.


2020 ◽  
pp. 122-134
Author(s):  
Inna Palamarchuk

The results of researches on studying of influence of mulching of soil on formation of a crop of plants of a zucchini in the conditions of the Right - bank Forest - steppe are resulted. The dependence of the phases of growth and development of zucchini plants, the dynamics of fruiting and yield in general on the type of mulching material was revealed. The use of synthetic mulching materials helped to reduce the interphase periods, increase yields and the percentage of early and late harvest. Mulching materials of organic origin extended the interphase periods. Thus, the shorter germination period - the beginning of fruit formation was by mulching the soil with perforated black polyethylene film and black agrofiber, which is 5-8 days shorter than the control, respectively. The longest harvest of zucchini was carried out on options for mulching the soil with black agrofiber and perforated black polyethylene film, depending on the variety, the duration of fruiting ranged from 67-85 days with the value of this indicator in the control 72-77 days. The highest yield was obtained by mulching the soil with perforated black polyethylene film, where the increase relative to the control was 10.9 - 28.0 t / ha, respectively. The highest percentage of harvested early products was provided by options for mulching the soil with black agrofiber and perforated black polyethylene film at the level of 6.6-8.3% in 2016 (control - 0.8-4.1%) and 3.2-5, 0% in 2018, while in the control versions the collection started a decade later. The most intensive fruiting of zucchini was observed from the first decade of July to the first decade of August for all years of research.


2020 ◽  
Author(s):  
Jeanine Vélez-Gavilán

Abstract Ptychosperma elegans is a popular ornamental palm in temperate climate gardens and parks. It is native to Australia. Reported as invasive in Cuba, little else is known about its effects. Although it is not considered an invasive species in French Polynesia, researchers have emphasiszed the need for further evaluation in view of the paucity of data on the species. In Florida (USA) it is listed as a category II species defined as an "invasive exotic that has increased in abundance or frequency but has not yet altered Florida plant communities to the extent shown by Category I species". The species is regarded as a lesser public nuisance, with seedlings appearing in hedges and shady dooryards, but not elsewhere in Florida; dispersion is believed to be aided by birds. P. elegans is found, albeit infrequently, in gardens in the southwest of Europe. Although it is an attractive ornamental palm, its intolerance of extreme temperatures, rapid loss in seed viability, long germination period and poor drought- and fire-tolerance, are apparently limiting the spread and invasiveness of the species.


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