Cut Nur Ichsan, Agus Arip Munawar, Gina Erida, Juliawati, Mardhiah Hayati
Compost, biochar and a mixture of compost biochar and soil microbes can reduce impact of drought and salinity stress. 800 and 10000 ppm NaCl (11.2 and 14.0 dSm-1) watering at Inpari 45 agritan and AU 11 Sigupai super green rice, for 3 days at reproductive phase. Irrigated with tab water, until field capacity (aerobic cultured) until harvest. Nutrient uptake, growth and yield of rice were varying. Reduce the salinity level in the reproductive phase from 10000 ppm (14 dSm-1) to 387.22 μS cm-1, while from 8000 ppm (11.2 dSm-1) to 519.22 in the Inpari 42 SGR variety while in the AU 11 Sigupai variety was decreased to (459.89, to 542.33 μS cm-1 at S1, S2. Biochar reduces soil salinity of S1 and S2 to 594.17, 476 μS cm-1 by using biochar (A1) Meanwhile, compost can reduce salinity S1 and S2 to 433.50 μS cm-1, to 527.00 μS cm-1. While the mixed amendment (A3) can reduce the salinity to 441.00 μS cm-1, 392.33 μS cm-1 at harvest time. Change on nutrient uptake, chlorophyll content, leave drying score and shoot dry weight of rice. Soil amendments were effective in reducing drought and salinity. There is a close relationship between the parameters studied. Mixed soil amendment (biochar 25 g + compost 25 g + 40 g mychorizha + 25 g tricoderma) per 10 kg of soil were effective increasing rice yield. The highest yields were found in rice on soil mix amendment (A3) followed by A2 and A1 with the yield potential 4.72, 4,69, 4.19 t ha-1. While the rice at S2 a yield potential of A3, A2, A1 of 3.2, 2.8 and 2.9 in t ha-1 respectively. Other mechanisms need to be investigated that can increase yields and reduce salinity with the three types of organic amendments. © 2023 WITPress. All rights reserved.
Agrotechnology Department, Faculty of Agriculture, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Department of Agriculture Technology, Faculty of Agriculture, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia; Faculty of Agriculture, Iskandar Muda University, Banda Aceh, 23234, Indonesia
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