This study was aimed to evaluate the effect of main crops harvest cutting height on the yield of rice ratoon in the tidal swamp by using direct seeding system. The experiment was conducted in Telang Sari village, District of Tanjung Lago, Banyuasin, South Sumatra Province from November 2013 to April 2014. It measured plots 4 x 5 m through a randomized block design with 5 replications. The treatment was main crops harvest cutting height of 10, 20, 30, 40 and 50 cm above the soil surface. The results showed that the effect of cutting height on rice ratoon yield depends on the condition of photosynthetic and the amount of remaining nodes on the main crops stubble as an emergence ratoon shoots. The main crops cutting height of 20-40 cm above the soil surface increased the number of productive tillers, grain weight per hill, yield per plot, ratoon ability to grow per plot, and the rice ratoon/main crops yield ratio in tidal land by using direct seeding system.
PENDAHULUANSistem ratun sangat potensial dikembangkan di lahan pasang surut yang memiliki kendala antara lain harga sarana produksi yang terus meningkat, semakin berkurangnya jumlah tenaga kerja dan waktu tanam yang sangat tergantung pada kondisi musim. Dengan sistem ratun selain memberikan tambahan produksi padi per musim tanam, juga hemat biaya dan tenaga kerja serta mengurangi waktu persiapan lahan (Nakano dan Morita, 2007;Susilawati et al., 2010). Pada daerah pasang surut dengan tenaga kerja terbatas dan mahal serta waktu tanam yang terbatas, sistem tanam benih langsung (tabela) dapat menjadi alternatif bagi petani yang bertujuan mengurangi biaya, penggunaan tenaga kerja dan mengejar masa tanam yang serentak dengan biaya relatif murah (Pane, 2003
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