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All Journal Agroista: Jurnal Agroteknologi
Suprih Wijayani
Program Studi Agroteknologi Fakultas Pertanian INSTIPER Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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KONTRIBUSI TANDAN KOSONG DALAM MENINGKATKAN PENGARUH PUPUK ANORGANIK TERHADAP PRODUKSI KELAPA SAWIT Suprih Wijayani; Herry Wirianata
AGROISTA : Jurnal Agroteknologi Vol. 6 No. 1 (2022): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.883 KB) | DOI: 10.55180/agi.v6i1.242

Abstract

Sustainable intensification of oil palm plantations faces the challenge of decreasing soil fertility and increasing the price of inorganic fertilizers. Organic matter plays an important role in maintaining soil fertility. Empty fruit bunches (EFB) are the main co-product of palm oil mills that have the potential to be used as a source of organic matter and nutrient sources. This study aims to reveal the effect of the application of empty fruit bunches in increasing the effectiveness and substituting inorganic fertilizers for the components of oil palm production. The number of female inflorescence, the number of FFB and the average weight of FFB were observed for 3 years on palm aged 8, 9 and 10 years. Application of EFB + 70% recommended inorganic fertilizer. The recommended fertilizer is 8 kg per tree (N P K Mg 14-28-6-2 +0.5 B). EFB are applied as one layer of mulch with a size of 3x4 m on a dead net. The results showed that the application of empty bunches could increase the number of female flowers and the number of FFB in plants aged 9 and 10 years (1-2 years after application), while inorganic fertilizer EFB was only at the age of 8 years (0 years after application) for both production components. FFB weight one year after application of EFB+70% inorganic fertilizer (age 9 years ) was higher than 8 and 10 year aged plants. The application of EFB+70% inorganic fertilizer can increase the contribution of nutrients from fertilizers compared to the application of inorganic fertilizers solely.
Pengaruh Dosis Mikoriza dan Komposisi Media Tanam terhadap Pertumbuhan Bibit Kelapa Sawit di Pre Nursery Roy Leonardo Lumban Batu; Suprih Wijayani; Pauliz Budi Hastuti
AGROISTA : Jurnal Agroteknologi Vol. 7 No. 1 (2023): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/agi.v7i1.580

Abstract

The development of oil palm plantations begins with the procurement of quality seeds. This effort is carried out through the use of mycorrhizal fungi as biological fertilizers and and improvement of seedling planting media. This study aims to determine the effect of mycorrhiza dose with the mixed composition of rice husk charcoal and top soil on the growth of oil palm seedlings in the pre-nursery. This research was a factorial experiment arranged in a completely randomized design. The composition of the planting medium consists of four levels: top soil, 25% husk charcoal with 75% humus, 50% husk charcoal plus 50% top soil, and 100% husk charcoal solely. The dose of mycorrhizal biofertilizer consists of three levels, namely: 0.5 and 10 grams per seed. The results of this study indicated that the composition of the media or the application of mycorrhizal biofertilizers had no significant effect on the growth of oil palm seedlings in prenursery. The largest seedling leaf area was produced by seedlings planted on media containing husk charcoal which was given 10 grams of mycorrhizal biofertilizer.
Co-Authors Herry Wirianata Pauliz Budi Hastuti Roy Leonardo Lumban Batu