Phosphorus and Potassium Status in Paddy Soils (Sawah) of Central Lampung Regency

  • Junita Barus

Abstrak

The knowledge about the nutrient status in the lowland soils is one of several ways to maintain soil fertility and increase
farmers income. The objective of this study was to evaluate the status of P20J and K20 content in paddy soils (sawah) at Central lampung regency during the year 2001/2002. Composite soil samples were collected in each different soil types based on mapping technical survey of I : 50.000 scale. Composite soil samples consisting of 5 - 10 sub samples were taken from top layer (0 - 20 em) depth. Soil sampling was taken by using grid system, that is I cm2 in the map represented 25 ha in the field p]OJ and K~ potential content determined by HCI 25 %. Data were arranged in a descriptive methode and then classified in to three degrees (high, medium and low). High P was> 40 mg P20s/100 g, medium P was 20;.40 mg P201100 g and law P was < 20 mg P;Os/100 g. High K was > 20 mg K20/100 g, medium K was 10 -20 mg K20 /100 g and low K « 10 mg K~/IOOg). The results shawed that soil p;OJ status in paddy soils (sawah) of Centra Lampung regency were 61,65 % high, 35,84 % medium and 2,65 % low while K20 status were 6,64% high, 16,02 % medium and 77,34% low.

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Junita Barus
Jurnal Tanah dan Lingkungan, dengan ISSN 1410-7333 diterbitkan dua kali setahun yaitu pada bulan April dan Oktober oleh Departemen Ilmu Tanah dan Sumberdaya Lahan (nama baru dari Departemen Tanah), Fakultas Pertanian, Institut Pertanian Bogor. Jurnal Tanah dan Lingkungan menyajikan artikel mengenai hasil penelitian dan ulasan tentang perkembangan mutakhir dalam bidang ilmu tanah, air dan ilmu lingkungan sebagai bahan kajian utama. Setiap naskah yang dikirim ke Jurnal Tanah dan Lingkungan, akan ditelaah oleh penelaah (reviewer) yang sesuai dengan bidangnya. Nama penelaah dicantumkan pada terbitan No. 2 dari setiap volume
Diterbitkan
2007-04-01