الفهرس | Only 14 pages are availabe for public view |
Abstract This study was conducted in the vegetable farm in clay soil, and organic agriculture laboratory, Horticulture Department, Faculty of Agriculture, Ain Shams University, during 20012 – 2014 for producing seed sprouts and vegetable leafy crops ( lettuce , parsley , spinach ). In the present study the effect of foliar spraying with animal blood meal (pepton) and aqueous extracts of seed sprout (fenugreek, faba bean and rocket) at three concentration (0, 1 , 2%) as well as their interaction on growth, yield and quality of leafy vegetable (lettuce , parsley , spinach) were evaluated . Also the study investigated the influence of pepton and sprout extracts on each crop leaf microbial load. This experiment was conducted in split plot design with four replicates where the sprouts extract and pepton treatments distributed in the main plots and the concentration treatments were located in the sub-plots. The results obtained from this study can be summarized as follows: Firstly: Effect of foliar spray with sprouts extract and pepton on lettuce plant: 1) Using pepton (animal blood meal) as foliar spray increased significantly lettuce plant growth characters compared with other sprout extract. On the other hand green faba bean sprout (shoots) extract as foliar spray recorded the lowest plant growth characters. 2) Chlorophyll content was a significantly increased by using pepton as foliar spray at higher concentration (2%) followed by fenugreek sprout extract at higher concentration in lettuce leaves. 3) Pepton as foliar spray significantly increased microbial load on lettuce fresh leaves (cfu) at both concentration (1% and 2%). 4) Spraying with 2% fenugreek sprouts extract inhibited (0.0 cfu/20cm 2 ) and significantly reduced (6.3 cfu/20cm 2 ) microbial load 10 or 70 days, after lettuce transplanting. 5) Pepton increased early and total yield per m 2 followed by fenugreek and rocket sprout extracts. While the lowest total yield was observed in faba bean green sprout extracts treatment. 6) Spraying lettuce plants with faba bean sprout extract increased lettuce leaf fiber content followed by pepton spray, while the lowest fiber content was obtained with rocket sprout extract. 7) Concerning nitrites and nitrate content (NO 2 and NO 3 ) pepton treatment exhibited the highest values, while it was lowest in case of using fenugreek sprout extract (NO 2 ) and faba bean sprouts (NO 3 ). Secondly: Effect of foliar spray with sprouts extract and pepton on parsley plant: 1) Using pepton (animal blood meal) and fenugreek sprouts extract as foliar spray increased significantly parsley plant growth characters compared with other sprout extract. 2) Chlorophyll content was a significantly affected by using pepton as foliar spray at higher concentration (1% and 2%) followed by fenugreek sprout extract at higher concentration. 3) Pepton as foliar spray significantly increased microbial load on parsley fresh leaves (cfu/20cm 2 ) at both concentration (1% and 2%) while spraying with 2% fenugreek sprouts extract inhibited and significantly reduced microbial load after 10 and 70 days, respectively. 4) Pepton increased yield per m 2 followed by fenugreek sprout extracts. While the lowest yield was observed in faba bean green sprout extracts treatment. 5) Spraying parsley plants with rocket sprout extract increased leaf fiber content. 6) Concerning nitrites showed (NO 2 ) and (No 3 ), pepton treatment the highest values 7) Vegetable seed sprouts extract increased total amino acids and protein, while the lowest value was observed in pepton treatment. Thirdly: Effect of foliar spray with sprouts extract and pepton on spinach plant: 1) Using pepton (animal blood meal) and fenugreek sprouts extract as foliar spray increased significantly spinach plant growth characters compared with other sprout extract. 2) Chlorophyll content and yield was no significant effect of using pepton and vegetable sprout extract. 3) Pepton as foliar spray significantly increased microbial load on spinach fresh leaves (cfu/20cm 2 ) at both concentration (1% and 2%) while spraying with 2% fenugreek sprouts extract inhibited and significantly reduced microbial load after 10 and 45 days, respectively. 4) Spraying spinach plants with faba bean sprout extract increased leaf fiber content. 5) Concerning nitrites content (NO 2 ) and nitrate content (No 3 ), showed pepton treatment the highest value recorded. 6) Vegetable seed sprouts extract increased total amino acids and protein, while the lowest value was observed in pepton treatment. In conclusion fenugreek sprout tissue may contain water soluble compounds that extract stimulatory effect on the growth of lettuce, parsley and spinach plants. Moreover fenugreek sprout extract may contain also microbial inhibiter compounds released in water extract, in contrast with pepton spray. Therefore its recommend use fenugreek sprout extract on leafy vegetable crops (lettuce, parsley and spinach) and instead of using pepton especially at higher extract concentration. |