EFFECT OF HASIL TANI ORGANIC COMPOUND PRODUCT (HTOC) ON THE RECOVERY OF SOFT SOIL IN RICE FIELD MADA ALOR SENIBONG, KEDAH, MALAYSIA (KESAN PRODUK HASIL TANI ORGANIC COMPOUND (HTOC) KE ATAS PEMULIHAN TANAH JERLUS DI SAWAH PADI MADA ALOR SENIBONG, KEDAH, MALAYSIA)

Muhammad Rendana, Wan Mohd Razi Idris, Zulfahmi Ali Rahman, Sahibin Abdul Rahim, Tukimat Lihan, Habibah Jamil

Abstract


Abstract

Soft soils are generally the major problem in decreasing rice production in Kedah. A study was conducted to recovery of soft soil in rice cultivation area using “Hasil Tani Organic Compound” (HTOC) product. The study was conducted within at selected rice field with soft soil problem under Lembaga Kemajuan Pertanian Muda (MADA) area in Alor Senibong Kedah, Malaysia. The sampling period was divided by two phases; before applying HTOC (May 2016) and after applying HTOC (September 2016) during one season. High moisture content of soft soils caused soft and weak soil strength, which delay the formation of hardpan layer. The application of HTOC could increase soil strength and reduced moisture content. The Zeolite material of HTOC was useful for assisting water infiltration and retention due to its porous properties and the capilary suction. HTOC was a good soil amendment which was that unlike gypsum and lime, it did not break down over time but remain in the soil to help improving nutrient and water retention permanently. HTOC required to increase soil strength (≥ 0.40 MPa) in order to support the load of heavy agricultural machines was 0.25 t  ha -1. Due to the HTOC application, recovery of soft soil could be done successfully. After being treated with HTOC, soil strength increased from 0.24 to 0.43 MPa at 0-100 cm soil depth. Bulk density and hydraulic conductivity values increased 1.01-1.04 gcm-3 and 0.19-0.30 cm hr-1 respectively, while soil moisture content decreased 11.87-6.58 %. In general, the application of HTOC product could be highly recommended to recovery of soft soil in rice cultivation areas and consequently enhanced rice yield.                                                                                                                  

Keywords: Rice production; soft soil; soil amendment; soil moisture; soil strength

 

Abstrak

Tanah jerlus adalah masalah utama dalam penurunan pengeluaran beras di Kedah. Satu kajian telah dijalankan untuk memulihkan tanah jerlus di kawasan penanaman padi menggunakan produk “Hasil Tani Organic Compound” (HTOC). Kajian ini dijalankan di kawasan sawah padi terpilih yang didapati masalah tanah jerlus di bawah kawasan Lembaga Kemajuan Pertanian Muda (MADA) di Alor Senibong Kedah, Malaysia. Tempoh persampelan dibahagikan kepada dua fasa iaitu; sebelum aplikasi HTOC (Mei 2016) dan selepas aplikasi HTOC (September 2016) dalam satu musim. Nilai kandungan kelembapan yang tinggi pada tanah jerlus menyebabkan kekuatan tanah menjadi lemah dan jerlus, yang mana melambatkan pembentukan lapisan hardpan. Penggunaan HTOC boleh meningkatkan kekuatan tanah dan mengurangkan kandungan lembapan. Bahan Zeolit HTOC berguna untuk membantu penyusupan dan pengekalan air disebabkan oleh sifat berliang dan sedutan kapilari yang dimiliki bahan tersebut. HTOC adalah bahan pembaikpulih tanah yang baik, tidak seperti gipsum dan kapur, yang mana ia tidak hilang dari masa ke masa tetapi tetap ada di dalam tanih bagi membantu meningkatkan pengekalan nutrien dan air dalam tanih secara kekal. HTOC yang diperlukan untuk meningkatkan kekuatan tanah (≥ 0.40 MPa) untuk dapat menyokong berat mesin pertanian adalah 0.25 t ha-1. Kerana aplikasi HTOC tersebut, pemulihan tanah jerlus boleh dilakukan dengan jayanya. Selepas dirawat dengan HTOC, kekuatan tanah meningkat dari 0.24 hingga 0.43 MPa pada kedalaman tanih 0-100 cm. Nilai ketumpatan pukal dan kekonduksian hidraulik tanih meningkat 1.01-1.04 g cm-3 dan 0.19-0.30 cm hr-1 masing-masing, manakala peratus kandungan kelembapan tanih menurun 11.87-6.58%. Secara amnya, penggunaan produk HTOC boleh disyorkan untuk pemulihan tanah jerlus di kawasan-kawasan penanaman padi dan seterusnya meningkatkan hasil padi.

Kata kunci: Kekuatan tanih; Kelembapan tanih; pembaikpulih tanih; pengeluaran padi; tanah jerlus 


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