RATE AND TIMING EFFECT OF PHOSPHORIC ACID APPLICATION ON FODDER BEET YIELD, SOIL P AND pH BELOW THE EMITTERS | ||||
| Journal of Plant Production | ||||
| Article 6, Volume 27, Issue 2, February 2002, Page 751-758 PDF (2.18 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2002.253318 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| S. M. Hasanein, | ||||
| Desert Research Center, Matariya, Cairo, Egypt | ||||
| Abstract | ||||
| Fodder beet is considered as one of the best fodder crops for livestock under Egyptian conditions. This study investigates the effect of fertilization with phosphoric acid at different both rates and timing of application on fodder beet productivity, soil P and pH below the emitters under drip irrigation system. The experimental site was located at EI-Maghara Research Station of Desert Research Center at North Sinai. Phosphoric acid was applied through drip irrigation system at rates equivalent to 0, 10, 20, 30, 40 and 50 kg P20s/feddan (concentration of acid should not exceed 300 mllm3 of water during growth). These treatments were splitted and added each 2 weeks and 4 as timing factor of application. Fresh yield of roots and leaves beside root length and circuit increased significantly with elevatinq phosphene acid rate. The most pronunced response was from 40 Kg P20slfed. The most effective frequeet til'l'lin~ of application was, proven to be each 2 weeks. Phosphorus concentration in tlhe soil was significantly affected by different levels of phosphoric, acid. The higl'Ter content of P under emitter is attributed te the accumulation of P during tme. fetrtilizafio'r'l cycle. Soil acidification caused by phosphoric acid occurred to a large extent in the volume of soil below the emitters. Acidification was greater at the higher rates of the acid treatments. Under desert condition and calcareous soil, fertilization with phosphoric acid as a fertilizer source is suggested to be practiced repeatedly for its convenience, advantages and efficiency. | ||||
| Keywords | ||||
| Phosphoric acid; fodder beet; soil-P | ||||
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