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PENGARUH KOMBINASI DOSIS BIOCHAR SEKAM PADI DAN VOLUME PEMBERIAN AIR TERHADAP P-TERSEDIA, SERAPAN P DAN HASIL LOBAK PADA TANAH BERKAPUR DI PULAU TIMOR Ady K. Mata Ratu; Diana Y. L. Serangmo; Yoke I. Benggu
JURNAL AGRISA Vol 10 No 1 (2021): Jurnal Agrisa
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/agrisa.v10i1.10354

Abstract

Dryland farming in Timor island is always constrained with the shortage of water supply, soil fertility as well as the availability of nutrients especially Phosphor (P). This condition can be eliminated by application of organic matterial to soil, because organic matter can increase the soil’s ability to hold water and soil fertility. Biochar as an organic material has been proved to increase soil water holding capacity and able to adsorb nutrients to prevent it from leaching. This research aimed to study the effect of combination of biochar and water supply on the availability of P in soil, uptake P by plants and yields of Turnip planted ini calcareous soil of Timor . This research is designed using Completely Randomized Design (CRD) and it is a single factor trial. There are 7 treatments of a combination of rice husk biochar dosage and volume of water supply. The results showed that there is a significant effect of the combination of rice husk biochar dosage and volume of water supply on the availability of soil P and the weight of radish tubers. Application of 300 gram.polybag-1 of biochar + 90% Etm of water supply gave higher available P (87,22 ppm), while application of 300 gram.polybag-1 of biochar + 80% Etm of water supply gave a better fresh weight of tuber (305,00 g ) compare to other treatments.
PENGARUH APLIKASI TRICHOKOMPOS DALAM MENINGKATKAN PERTUMBUHAN DAN HASIL TANAMAN EDAMAME (Glycine max L. (Merrill)) Diana Y. L. Serangmo; Agnes V. Simamora; Gabriela C.G. Pratama
JURNAL AGRISA Vol 10 No 2 (2021): Jurnal Agrisa
Publisher : Program Studi Agroteknologi, Fakultas Pertanian, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/agrisa.v10i2.10359

Abstract

To increase edamame production, one of the things to consider is the availability of nutrients, which can be provided through the addition of organic fertilizers, for example, trichocompost. Trichocompost plays a role in increasing crop production because it can increase soil fertility and contains the antagonistic fungus Trichoderma sp., capable of controlling plant pathogens. This study aimed to determine the growth response and yield of edamame due to the dose and time of application of trichocompost fertilizer. This research was carried out at the Undana Archipelago Dry Land Integrated Field Laboratory from October 2020 to June 2021. The study used a factorial randomized block design with two factors. The first factor was the dose of trichocompost (A), which consisted of four levels, namely A1=control, using the recommended NPK dose for edamame, which was 2.4 g/plant, A2=240 g of trichocompost/plant, A3=480 g of trichocompost/ plant, and A4=720 g of trichocompost/plant. The second factor was the application time of trichocompost (B) which consisted of three levels, namely B1 = application of trichocompost two weeks before planting, B2 = application of trichocompost one week before planting, and B3 = application of trichocompost at planting. Parameters observed were plant height, number of leaves, number of pods per plant, number of seeds, fresh plant weight, and seed dry weight. The results showed that the interaction between the doses of trichocompost fertilizer and the application time of trichocompost had no significant effect on all observational parameters. However, there was a tendency that trichocompost at a dose of 720 g/plant applied two weeks before planting had a higher number of pods, seeds, fresh weight, and dry weight of plants compared to the other treatments.