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All Journal Jurnal Agritechno Anjoro : International Journal of Agriculture and Business
Rismaneswati, Rismaneswati
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Economics, Econometrics & Finance Engineering Environmental Science

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Availability of phosphorus in Ultisols by applying compost and phosphate rock Jayadi, Muhammad; Rismaneswati, Rismaneswati; Majid, Sharini Abd
Anjoro: International Journal of Agriculture and Business Vol 4 No 1 (2023): Anjoro
Publisher : Agribusiness Department, Agriculture and Forestry Faculty, Universitas Sulawesi Barat, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/anjoro.v4i1.2278

Abstract

Ultisols are the largest order in Indonesia among other acid soils, namely around 41,919 million ha, with the problem of insufficient P availability in soil for plant growth, requiring special treatment to increase available P in the soil. This study aims to examine the effect of compost and rock phosphate in increasing the availability of P in Ultisols. The research was conducted in April–May 2016 at the Laboratory of Chemistry and Soil Fertility, University of Hasanuddin, Makassar. The study used a randomized block design and was carried out by incubating straw compost, gamal leaves, cow dung and rock phosphate in Ultisol soil with a soil weight of 300 g. The research results show that 15th day of incubation showed the highest available P of 12.97 ppm with a pH of 5.15 in the KJ575%+KS525%+BF treatment, while on the 30th day of incubation the available P increased 17.45 ppm in the rock phosphate treatment with a pH of 5.58. The application of rock phosphate and SP36 reduced Al-P, Fe-P, and Ca-P, while the application of organic matter, in this case compost, did not reduce Al-P, Fe-P, and Ca-P.
POTENSI KESUBURAN TANAH TANAMAN KOPI ROBUSTA DAN PETA PENYEBARANNYA MENGGUNAKAN APLIKASI GIS DI KECAMATAN KINDANG Jayadi, Muh.; Rismaneswati, Rismaneswati; Irawan, Okky
Jurnal Agritechno Jurnal Agritechno Vol. 16, Nomor 1, April 2023
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70124/at.v16i1.986

Abstract

Kindang District is an allotment area for robusta coffee plantations. In terms of climate, Kindang District has the potential to produce high coffee production. However, there was a decrease in coffee production. Therefore, it is necessary to analyze the potential of soil fertility related to biophysical aspects for the development of robusta coffee plants based on land suitability. This study aims to analyze the potential for soil fertility based on land suitability for robusta coffee. This research method uses a descriptive method and determines the land suitability index using the square root approach. Profile observations were made at 11 points spread across the Kindang District. The results of this study indicate that the land in Kindang District belongs to the marginal land suitability class (S3) for robusta coffee with a land suitability index value between 25.51-45.18. The limiting factors found were slope, soil depth and soil pH with an area of ​​9,660 ha.
Co-Authors Irawan, Okky Jayadi, Muh. Jayadi, Muhammad Majid, Sharini Abd