ABDEL-MAKSOUD, S., HAFEZ, F., EL-SHAZLY, M., SHEMEIS, N. (2001). STUDY ON USING DIFFERENT TECHNIQUES FORB WEEDS CONTROL IN FISH POND. Egyptian Journal of Agricultural Research, 79(4), 1643-1656. doi: 10.21608/ejar.2001.321338
SALAH E. ABDEL-MAKSOUD; FATMA A. HAFEZ; MAHMOUD A. EL-SHAZLY; NAEM M. E. SHEMEIS. "STUDY ON USING DIFFERENT TECHNIQUES FORB WEEDS CONTROL IN FISH POND". Egyptian Journal of Agricultural Research, 79, 4, 2001, 1643-1656. doi: 10.21608/ejar.2001.321338
ABDEL-MAKSOUD, S., HAFEZ, F., EL-SHAZLY, M., SHEMEIS, N. (2001). 'STUDY ON USING DIFFERENT TECHNIQUES FORB WEEDS CONTROL IN FISH POND', Egyptian Journal of Agricultural Research, 79(4), pp. 1643-1656. doi: 10.21608/ejar.2001.321338
ABDEL-MAKSOUD, S., HAFEZ, F., EL-SHAZLY, M., SHEMEIS, N. STUDY ON USING DIFFERENT TECHNIQUES FORB WEEDS CONTROL IN FISH POND. Egyptian Journal of Agricultural Research, 2001; 79(4): 1643-1656. doi: 10.21608/ejar.2001.321338
STUDY ON USING DIFFERENT TECHNIQUES FORB WEEDS CONTROL IN FISH POND
1Faculty of Agriculture, Zagazig University, Egypt
2Central Laboratory for Aquaculture Research at Abbassa, Agricultural Research Centre, Giza, Egypt
Abstract
This study was conducted during a culture season. 1995 in thirty fresh water earthen ponds having different areas; seven and hall. one and half feddan in fish ponds of Central Laboratory for Aquaculture Research. Abbassa. Abou4iammad. Shackia, Agricultural Research Centre. Natural feeding was established by applying chicken manure and superphosphate and urea. Commercial pelleted fish feed 25% elude protein was also applied as Supplemental feed. Fish species under experimentation wore Wahl& Oteochromis niloticua, common carp. Cyptinus carpi°, silver carp. Hypophthermichthys motitnZ, and grass carp. Cetenopfaryngodon idea. All species were stocked under a good care in a polycullure system with number 01 1500. 72 and 150 for tilapia, common carp and silver carp, respectively. Twelve fingerlings from grass carp wore added for the three treatments (biological only, biological + mechanical and manual). Water quality was examined every two weeks. Three plants were tested (Cattail - Paragross and Coontail) for control. Mechanical control was carried out by using American grass cutting machine (Hockney model He-10H). Manual control was done by using hand stickle. Biological control was applied.by using grass carp fish. At the end Of the growing season in December 1995, ponds were drained and fish were collected by seining. Total fish production was determined. Results indicated that increase pond area improved the machine performance. Increasing the moisture percentages led to high machine performance. It can be concluded that water depth of 100 cm improves the machine performance in controlling the three kinds of weeds. Results obtained showed that pond conditions were 2% lifted weeds, free and 4% lilted weeds communities in the ponds at the end of the experiment fOr biological + mechanical, manual a biological and biological control, respectively. Total fish production was highest for manual + biological control. Net return was highest under mechanical biological method.
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