RESPONSE OF VALENCIA ORANGE TREES TO SOME SOURCES OF ORGANIC FERTILIZERS UNDER DIFFERENT TYPES OF SOIL | ||||
Fayoum Journal of Agricultural Research and Development | ||||
Article 13, Volume 25, Issue 2, July 2011, Page 136-151 PDF (801.22 K) | ||||
DOI: 10.21608/fjard.2011.195641 | ||||
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Authors | ||||
Ensherah A.H. Tayeh1; M.A. Zaghloul2; M.A. Abou- Seeda3; A.S. Taalab3 | ||||
1Hort. Res. Instit., Agric. Res. Center, Giza, Egypt | ||||
2Soils and Water use Dept. National Res. Center, Dokki, Giza. | ||||
3Plant Nutrition Dept. National Res. Center, Dokki, Giza. | ||||
Abstract | ||||
The investigation was carried out during two successive seasons 2008 and 2009 on Valencia orange trees twenty years old, budded on sour orange rootstock at three types of soil i.e, silty loam of a private citrus orchard of Belbais, Sharkia governorate, loamy sand of a private farm of Abshway, Fayoum governorate and sandy soil at El- Horia farm at ElNobaria sector, El-Behera governorate to study the effect of different sources of organic manure fertilizers i.e. (poultry manure, sheep manure, cattle manure, sewage sludge compost and town waste compost at the rate of 71.4 kg/tree, Rock phosphate (24.5%P2O5) was the source of phosphate fertilizer and Felspar (7.9%K2O)was the source of potassium on comparing with mineral fertilizer [ 800gm ammonium sulphate 20.5%N, 400gm Calcium super phosphate 15.5%P2o5 and 400gm Potassium sulphate 48%K2O] per tree on vegetative growth, leaf (water, pigment and mineral) contents, fruiting parameters (fruit set, June drop and fruiting) percentage, yield and fruit quality. In addition the amounts of N,NH4, NO3,P,K,Fe, Mn, Zn and Cu that remained in each studied soil at the end of the experiment were also studied. The obtained results revealed that vegetative growth, leaf water, chlorophylls and mineral contents, fruit set, fruiting, yield and fruit quality significantly increased as a result of organic manure addition specially when using poultry manure, whereas, leaf carotene and June drop %were lowered. Silty loam soil was the best on affecting trees growth followed by loamy sand whereas sandy soil was the lowest. Adding poultry manure led to an increase in soil N,NH4 and P, whereas , using chemical fertilizers led to an increase in soil NO3 . Applying cattle manure led to an increase in soil K and Fe. The main observation was that using Town waste compost led to an increase in soil Zn and Cu. | ||||
Keywords | ||||
Valencia; orange trees; sources of organic fertilizers; different types of soil | ||||
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