A field study was carried out with the objective to determine the effect of various levels of nitrogen on growth, development, yield and yield components of different sunflower (Helianthus annuus L.) hybrids i.e. Hysu...A field study was carried out with the objective to determine the effect of various levels of nitrogen on growth, development, yield and yield components of different sunflower (Helianthus annuus L.) hybrids i.e. Hysun-33 and S-78 were evaluated under agro-climatic conditions of Sargodha, Pakistan during spring 2013. The experiment was laid out in a randomized complete block design with split plot arrangement having three replications, keeping cultivars in the main plots and N levels in the subplots. The net plot size was 4.2 m × 6 m. The growth parameters such are leaf area, leaf area duration and yield parameters were observed are Days to a thesis, Days to maturity, head diameter (cm), No. of achene’s per head, Achene yield (kg·ha-1) and total dry matter (kg). The results showed that increasing the nitrogen rate also increased the No. of achene’s per head, Achene yield (kg·ha-1) and total dry matter (kg) in S-78 hybrid where the nitrogen application rate was 180 kg·ha-1 as compared to Hysun-33 cultivar.展开更多
Decision support system for agro-technology transfer (DSSAT), OIL CROP-SUN Model was used to stimulate the phenology, growth, yield of different two sunflower hybrids. i.e. Hysun-33 and S-78 by applying different nitr...Decision support system for agro-technology transfer (DSSAT), OIL CROP-SUN Model was used to stimulate the phenology, growth, yield of different two sunflower hybrids. i.e. Hysun-33 and S-78 by applying different nitrogen levels. The effect of nitrogen (N) on growth and yield components of different sunflower (Helianthus annuus L.) hybrids were evaluated under agro-climatic conditions of Sargodha, Pakistan during spring 2013. The experiment was laid out in a randomized complete block design with split plot arrangement having three replications, keeping cultivars in the main plots and nitrogen levels (0, 45, 90,135 and 180 kg/ha) in sub plots. OIL CROP-SUN Model showed that the model was able to simulate the growth and yield of sunflower with an average of 10.44 error% between observed and simulate achene yield (AY). The result of simulation indicates that nitrogen rate of 180 kg/ha produced highest achene yield in S-78 hybrid as compared to other treatments and Hysun-33 cultivar.展开更多
A field experiment was conducted at the experiment Farm of Kafr-El-Hamam Research Station,Zagazig,Sharkia Governorate,Agricultural Research Center,Egypt during the two successive summer seasons of 2015 and 2016 to ach...A field experiment was conducted at the experiment Farm of Kafr-El-Hamam Research Station,Zagazig,Sharkia Governorate,Agricultural Research Center,Egypt during the two successive summer seasons of 2015 and 2016 to achieve the highest yield and good oil quality of three tested sunflower genotypes.In both seasons,the experiment was conducted using the split split plot design in randomized complete block design with three replicates arrangement keeping plant spaces(15,20 and 25 cm apart between hills)in main plots,nitrogen fertilization levels(15,30 and 45 N fad.^-1)in sub plots and sunflower genotypes(Giza 102,Sakha 53 and promising line of L120)in sub sub plots.Yield and quality traits were significantly influenced by plant spaces,nitrogen fertilization levels and genotypes as well as interactions in both seasons and their combined analysis.The wider plant spacing of 25 cm seems to be a good compromise between the highest seed yield fad.^-1 and good acid composition of oil.Gradually increasing of nitrogen fertilization level had a positive reflected on yield and desirable acid composition of oil.Sakha 53 was ranked in the first order in stem diameter,head diameter,100-seed weight,seed weight plant^-1,flowered late and hence seed yield fad.^-1 as well as seed oil content whereas,Giza 102 characterized with its contained the highest proportion of oleic and linoleic unsaturated fatty acids.The highest values of head diameter,100-seed weight,seed weight plant^-1 and hence seed yield fad.^-1 as well as the highest proportion of oleic and linoleic unsaturated fatty acids composition were obtained by grown sunflower cv.Sakha 53 at wider spacing of 25 cm with application of nitrogen fertilization levels of 45 N fad.^-1.Correlation and path analyses revealed that 100-seed weight and head diameter had the highest direct and indirect influence on seed weight plant1,at the same time also,oleic acid content and linoleic acid content had the highest direct and indirect effect influence on seed oil content indicating their importance as selection criteria to improve yield and oil quality of sunflower.展开更多
In the present study, the aflatoxin B1 contamination at various stages of oil refining and in refined oil were carried out. This was subsequently compared with commercial vegetable oil samples. Among the 23 different ...In the present study, the aflatoxin B1 contamination at various stages of oil refining and in refined oil were carried out. This was subsequently compared with commercial vegetable oil samples. Among the 23 different sunflower oil samples were tested, 10 of them showed posi-tive results to AFB1 and the remaining 13 showed negative results to AFB1. All the refined oil samples were free from AFB1 contamination.展开更多
文摘A field study was carried out with the objective to determine the effect of various levels of nitrogen on growth, development, yield and yield components of different sunflower (Helianthus annuus L.) hybrids i.e. Hysun-33 and S-78 were evaluated under agro-climatic conditions of Sargodha, Pakistan during spring 2013. The experiment was laid out in a randomized complete block design with split plot arrangement having three replications, keeping cultivars in the main plots and N levels in the subplots. The net plot size was 4.2 m × 6 m. The growth parameters such are leaf area, leaf area duration and yield parameters were observed are Days to a thesis, Days to maturity, head diameter (cm), No. of achene’s per head, Achene yield (kg·ha-1) and total dry matter (kg). The results showed that increasing the nitrogen rate also increased the No. of achene’s per head, Achene yield (kg·ha-1) and total dry matter (kg) in S-78 hybrid where the nitrogen application rate was 180 kg·ha-1 as compared to Hysun-33 cultivar.
文摘Decision support system for agro-technology transfer (DSSAT), OIL CROP-SUN Model was used to stimulate the phenology, growth, yield of different two sunflower hybrids. i.e. Hysun-33 and S-78 by applying different nitrogen levels. The effect of nitrogen (N) on growth and yield components of different sunflower (Helianthus annuus L.) hybrids were evaluated under agro-climatic conditions of Sargodha, Pakistan during spring 2013. The experiment was laid out in a randomized complete block design with split plot arrangement having three replications, keeping cultivars in the main plots and nitrogen levels (0, 45, 90,135 and 180 kg/ha) in sub plots. OIL CROP-SUN Model showed that the model was able to simulate the growth and yield of sunflower with an average of 10.44 error% between observed and simulate achene yield (AY). The result of simulation indicates that nitrogen rate of 180 kg/ha produced highest achene yield in S-78 hybrid as compared to other treatments and Hysun-33 cultivar.
文摘A field experiment was conducted at the experiment Farm of Kafr-El-Hamam Research Station,Zagazig,Sharkia Governorate,Agricultural Research Center,Egypt during the two successive summer seasons of 2015 and 2016 to achieve the highest yield and good oil quality of three tested sunflower genotypes.In both seasons,the experiment was conducted using the split split plot design in randomized complete block design with three replicates arrangement keeping plant spaces(15,20 and 25 cm apart between hills)in main plots,nitrogen fertilization levels(15,30 and 45 N fad.^-1)in sub plots and sunflower genotypes(Giza 102,Sakha 53 and promising line of L120)in sub sub plots.Yield and quality traits were significantly influenced by plant spaces,nitrogen fertilization levels and genotypes as well as interactions in both seasons and their combined analysis.The wider plant spacing of 25 cm seems to be a good compromise between the highest seed yield fad.^-1 and good acid composition of oil.Gradually increasing of nitrogen fertilization level had a positive reflected on yield and desirable acid composition of oil.Sakha 53 was ranked in the first order in stem diameter,head diameter,100-seed weight,seed weight plant^-1,flowered late and hence seed yield fad.^-1 as well as seed oil content whereas,Giza 102 characterized with its contained the highest proportion of oleic and linoleic unsaturated fatty acids.The highest values of head diameter,100-seed weight,seed weight plant^-1 and hence seed yield fad.^-1 as well as the highest proportion of oleic and linoleic unsaturated fatty acids composition were obtained by grown sunflower cv.Sakha 53 at wider spacing of 25 cm with application of nitrogen fertilization levels of 45 N fad.^-1.Correlation and path analyses revealed that 100-seed weight and head diameter had the highest direct and indirect influence on seed weight plant1,at the same time also,oleic acid content and linoleic acid content had the highest direct and indirect effect influence on seed oil content indicating their importance as selection criteria to improve yield and oil quality of sunflower.
文摘In the present study, the aflatoxin B1 contamination at various stages of oil refining and in refined oil were carried out. This was subsequently compared with commercial vegetable oil samples. Among the 23 different sunflower oil samples were tested, 10 of them showed posi-tive results to AFB1 and the remaining 13 showed negative results to AFB1. All the refined oil samples were free from AFB1 contamination.
