Electronic Theses and Dissertation

Ultisol merupakan jenis tanah yang memiliki tingkat kesuburan yang rendah. Salah satu teknologi untuk meningkatkan kesuburan dengan pemberian bahan organik yang dapat memperbaiki sifat sifat fisika tanah, kimia tanah dan biologi tanah ke arah yang lebih baik. Bahan organik yang telah mengalami proses dekomposisi mengandung berbagai nutrisi hara esensial tanaman, oleh karena itu penelitian ini bertujuan untuk mengetahui tingkat kematangan bahan organik yang dicampur dengan dolomit terhadap kesuburan tanah yang tercerminkan dari ketersediaan hara N,P dan K.
Penelitian yang dilaksanakan pada Februari hingga Maret 2024 ini menggunakan rancangan acak lengkap dengan tujuh perlakuan dan tiga ulangan. Perlakuan yang diuji yaitu, kontrol; 10 ton/ha bahan organik C/N >30; 10 ton/ha bahan organik C/N 10-30; 10 ton/ha bahan organik 30 + 5 ton/ha dolomit; 10 ton/ha bahan organik C/N 10-30 + 5 ton/ha dolomit; dan 10 ton/ha bahan organik 30 + 5 ton/ha dolomit dan 10 ton/ha bahan organik C/N rasio 10-30 + 5 ton/ha dolomit memberikan pengaruh terbaik terhadap pH tanah, aplikasi 10 ton/ha bahan organik C/N >30 + 5 ton/ha dolomit memberikan pengaruh terbaik terhadap N-Total tanah, aplikasi 10 ton/ha bahan organik C/N > 30 memberikan pengaruh terbaik terhadap P-tersedia tanah dan aplikasi 10 ton/ha bahan organik C/N >30 + 5 ton/ha dolomit memberikan pengaruh terbaik terhadap K-dd.

Ultisol is a type of soil that has a low fertility level. One technology for increasing fertility is by providing organic material which can improve the physical properties of soil, soil chemistry and soil biology in a better direction. Organic material that has undergone a decomposition process contains various essential plant nutrients, therefore this research aims to determine the maturity level of organic material mixed with dolomite on soil fertility which is manifested from the availability of N.P and K nutrients. The research, which was carried out from February to March 2024, used a completely randomized plan with seven treatments and three replications. The treatments tested were, control; 10 tonnes/ha organic matter C/N > 30 10 tonnes/ha organic matter C/N 10-30; 10 tonnes/ha organic matter 30 + 5tons/hour * dolomite; 10 tons/ha organic matter C/N 10 - 30 + 5tons / hour * dolomite, and 10 tons/ha organic matter < 10 + 5tons / hour * dolomite The results of the research showed that organic baban with several levels of maturity mixed with dolomite lime had a very significant effect on soil pH and K-dd, a significant effect on soil N-Total and an insignificant effect on soil P-available. Application of 10 tons/ha organic babau C / N > 30 + 5 tons / hour * dolomite a and 10 tons / ha organic material C/N tasio 10 - 30 + 5 tons / hour ha organic material C / N > 30 + 5ton / h organic C/N >30+5 tons/ha dolomite has the best effect on K-dd.