Impact of rock phosphate and feldspar with or without phosphate and potassium solublizing bacteria on vegetative growth, yield and chemical composition of roselle plants / Seham Ahmed Ali Diab ; Supervised Hamdy Mohamed Ali Elbagoury , Weaam Ramadan Arafa Sakr , Mahassen Abdelghany Sidky
Material type:
- تأثير صخر الفوسفات والفلسبار مع أو بدون البكتريا المحللة للفوسفات والبوتاسيوم على النمو الخضرى والمحصول والتركيب الكيماوى لنباتات الكركديه [Added title page title]
- Issued also as CD
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قاعة الرسائل الجامعية - الدور الاول | المكتبة المركزبة الجديدة - جامعة القاهرة | Cai01.07.12.Ph.D.2015.Sh.I (Browse shelf(Opens below)) | Not for loan | 01010110066518000 | ||
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مخـــزن الرســائل الجـــامعية - البدروم | المكتبة المركزبة الجديدة - جامعة القاهرة | Cai01.07.12.Ph.D.2015.Sh.I (Browse shelf(Opens below)) | 66518.CD | Not for loan | 01020110066518000 |
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Thesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Ornamental Horticulture
This study was conducted to produce organic production of roselle by using Egyptian rock phosphate (20 % P2O5) at 100, 150 and 200 kg/feddan and fledspar (10% K2O) at 250 and 500 kg/ feddan combinations as an alternative for chemical PK fertilizers of calcium super phosphate (15.5% P2O5) and potassium sulphate (48% K2O) at the rates of 150 and 75 kg/fed, respectively. The mixtures were added with or without Bacillus megatherium var. phosphaticum (phosphate solublizing bacteria) and Bacillus mucilaginosus (potassium solublizing bacteria) at 3 L/feddan. Rhizobacterin biofertilizer (a mixture of Azotobacter chroococcum and Azospirillum lipoferum) was added to all treatments at 600 g/ feddan as a source of nitrogen. All the treatments significantly enhanced plant height, number of branches/ plant, leaf area, number of fruits, root length, fresh and dry weights of leaves and roots/plant, and fresh and air dry weights of calyces /plant as well as seed yield/plant and seed oil percentage and seed oil yield/ plant, anthocyanin content and acidity of calyces, total chlorophylls, carotenoids ,
Issued also as CD
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