Studi jarak tanam dan naungan terhadap pertumbuhan dan potensi Asystasia gangetica (L.) T. Anderson sebagai tanaman penutup tanah

Abstract

Studi jarak tanam dan naungan terhadap pertumbuhan dan potensi Asystasia gangetica (L.) T. Anderson sebagai tanaman penutup tanahStudy of plant distance and shade on growth and potential of Asystasia gangetica (L.) T. Anderson as cover crop Abstract. Cover crop is one of nature-based agricultural practices that can increase the provision of various ecosystem services in agroecosystems. A. gangetica is a weed that is often found in oil palm plantations and has the potential as a cover crop. This study aimed to study the optimum planting distance of growth and potential of A. gangetica as a cover crop on open and shaded land. The study was conducted at the Experimental Field, Faculty of Agriculture, UISU, Medan, from January to April 2018. The study used a Split Plot Design with three replications. The first factor as main plot was shade that consisted of two levels, there were: without shade and 50% shaded. The second factor as subplot was planting distance which consisted of three levels, there were: 10 cm x 10 cm, 20 cm x 20 cm, and 40 cm x 40 cm. The results showed that A. gangetica has the potential as cover crop because it grew fast, cover land rapidly, adapt to the environment, and able to suppress weed with an optimum planting distance of 20 cm x 20 cm.

Characteristic Morphology and Biomass Production of Napier Grass (Pennisetum purpureum) Cultivar Gama Umami Under Teak Tree (Tectona grandis) Shade in Blora, Central Java

“…This is due to the difference in light intensity received by plants under the shade of teak trees versus those without. Plants in the nonshaded treatment receive more sunlight intensity for photosynthesis than shaded plants (Asbur et al, 2019).…”

Perbaikan Sifat Kimia Tanah dan Pertumbuhan Kelapa Sawit Rakyat TM-1 Dengan Pemberian Kombinasi Pupuk Anorganik-Organik dan Asystasia gangetica (L.) T. Anderson Sebagai Tanaman Penutup Tanah

“…Selain itu dengan adanya TPT A. gangetica mampu menambah kandungan hara N, P, K dan C-organik tanah (Tabel 1). Sejalan dengan hasil penelitian ; Asbur et al (2021), bahwa pemanfaatan A. gangetica sebagai TPT mampu menyumbangkan unsur hara N, P, K dan Corganik ke dalam tanah melalui dekomposisi serasahnya. Lebih lanjut Perwitasari et al (2012) menyatakatan bahwa ILD berkaitan erat dengan efisiensi radiasi matahari yang digunakan untuk Keterangan: Angka pada kolom dan baris yang sama diikuti huruf yang berbeda menunjukkan berbeda nyata berdasarkan uji LSD pada taraf 5% Angka pada Rataan (P) dan (T) diikuti huruf yang berbeda menunjukkan berbeda nyata berdasarkan uji LSD pada taraf 5% P1: Pupuk anorganik 0%-organik 100% (10 kg/pohon kompos tankos); P2: Pupuk anorganik 50%-organik 50% (1 kg/pohon urea + 0.75 kg/pohon KCl + 0.75 kg/pohon SP36 + 5 kg/pohon kompos tankos); P3: Pupuk anorganik 100%-organik 0% (2 kg/pohon urea + 1.5 kg/pohon KCl + 1.5 kg/pohon SP36); P4: Pupuk anorganik 100%organik 100% (2 kg/pohon urea + 1.5 kg/pohon KCl + 1.5 kg/pohon SP36 + 10 kg/pohon kompos tankos); T0: Tanpa TPT; T1: TPT A. gangetica Note: Values in the same column and row followed by different letters show significantly different based on the LSD test at 5% level Values on the mean (P) and (T) followed by different letters show significantly different based on the LSD test at the 5% level P1: 0% inorganic-100% organic fertilizer (10 kg/tree tankos compost); P2: 50% inorganic-50% organic fertilizer (1 kg/tree urea + 0.75 kg/tree KCl + 0.75 kg/tree SP36 + 5 kg/tree tankos compost); P3: 100% inorganic-0% organic fertilizer (2 kg/tree urea + 1.5 kg/tree KCl + 1.5 kg/tree SP36); P4: 100% inorganic-100% organic fertilizer (2 kg/tree urea + 1.5 kg/tree KCl + 1.5 kg/tree SP36 + 10 kg/tree tankos compost); T0: Without TPT; T1: TPT A. gangetica Tabel 3.…”

The role of plant species diversity in maintaining ecological balance in oil palm plantation

“…Not only Eleocharis dulcis, Asystasia gangetica can also be used as cover and increase the availability of nutrients N, P, K as much as 18.49%,9.20%, 38.36%. A. Gangetica can increase soil carbon stock by 100% compared to soil without groundcover [29,30]. Other studies have shown that besides A. Gangetica, N. Biserrata also has functioned as a cover crop and reduces the water deficit by 51.53%, and contributes nutrients by 15.7 tons dry weight/ha/year or 7.7 tons C/ha/year [31].…”