The current research was conducted at Tissue Culture laboratory of Vegetables and Ornamental Dept., and greenhouse of Nematology Research Unit, Agricultural Zoology Dept., Faculty of Agriculture, Mansoura Univ., Egypt. The effect of certain components i.e. L-glutamic acid, ascorbic acid, yeast extract and phenylalanine introduced singly at 1 g/ L added to MS medium used for the growth of the carnation seeds, obtained from France before transplanting into plastic pots filled with sterilized loamy sandy soil on Meloidogyne incognita infection was evaluated under greenhouse conditions at 22±5°C. Results indicate that among tested treatments, application of L-glutamic acid gave the highest reduction percentage in M. incognita root galls by 57.14% while ascorbic acid ranked first in respect to eggmasses with value of 65.25%. However, Yeast extract exceeded other tested components in percentage increase of the whole plant fresh and shoot dry weights of the infected carnation seedlings and uninfected plants as well with values of 99.09 and 53.33%; and 55.96 and 211.8%, respectively. Thus, it could be concluded that yeast extract or L-glutamic acid applied in MS medium considered the best treatments in improving growth of carnation plants, increasing growth and suppressing M. incognita development and reproduction under greenhouse conditions.
The present investigation was carried out to evaluate the effect of foliar spray by fulvic acid extract at concentrations of 3.5 and 7cm/L on plants. Foliar spray was applied on plant leaves 3times. The first time was done after the complete Pancratium maritimum plants reached 15cm height. The second time was after one month from the first one. Finally, the third one was performed after cutting flowers. Beside that the chemical fertilizations were added as follows: urea (46.5%N), calcium superphosphate (15.5%P) and potassium sulphate (48.5%K) at different rates of 100, 75, 50and 25% from the recommended dosage on this plant. Data were recorded for the vegetative growth, flowering, bulbs yield and chemical composition and it was a matter of importance to conclude that for obtaining a healthy outdoor plants of Pancratium maritimum for long period with good vegetative and flowering traits, it is recommended to fertilize this plant with 75% NPK +3cm fulvic acid or 50%NPK+5cm fulvic acid under similar conditions of this investigation.
This study was conducted in the nursery of Baramoon Research Station, Horticulture Research Institute, Agriculture Research Center, during two successive seasons ( 2004/2005 and 2005/2006), aiming to investigate the effect of different concentrations of Cycocel (CCC) at 1500 and 3000 and Paclobutrazol (PBZ) at 75 and 150 ppm on Pelargonium zonale, L. (Red cultivar) plants. Foliar spray was once (after 15 days) or twice (after 15 and 30 days from planting). The most important results can be summarized as follows:-1-CCC and PBZ controlled plant height in all treated plants and induced profuse branching. 2-The used growth retardants induced plentiful inflorescences as compared with control plants. 3-All of PBZ and most of CCC treatments reduced number of days to flower. 4-All CCC or PBZ treatments increased the total chlorophyll and carbohydrates content.For obtaining compact plants, earlier flowering with dark green leaves, a profuse branches and plentiful inflorescences it may be recommended to use PBZ at 75 ppm twice.
The current research was conducted at Agricultural Experience Station, Faculty of Agriculture, Mansoura University, Egypt. This work was postulated to study the effect of salinity on growth and yield of canola, as well as the oil content of seeds as quality and quantity. Potted soils were artificially salinized by sodium chloride solution and then drying the soil aerobically. Control treatment potted with untreated soil (0.2%). Seeds were obtained from "Ministry of Agriculture, Oil Crop Research Center" Giza, Egypt. Twenty seeds were planted in every pot. Results indicated that decreasing in vegetative growth with increasing the salinity when comparing with control treatments. However, observed data in the study, showed the maximum means of seeds yield all over the tested yield parameters observed with control treatments and decreased with increasing salinity. Same trend occurred in oil content and edible quality, which were decreased when salinity increased. Thus, it could be concluded that salinity had a detrimental effect on improving growth of canola plants, decreasing growth and suppressing seeds yield and edible oil production.
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