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This Author published in this journals
All Journal Jurnal Hortikultura Indonesia (JHI) Journal of Tropical Soils AGRIVITA, Journal of Agricultural Science Jurnal Bimbingan Konseling Agroekoteknologi Tropika Lembab Jurnal Tanah dan Iklim Jurnal Kesehatan Tambusai
Umi Haryati
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Agriculture, Biological Sciences & Forestry Dentistry Education Environmental Science Health Professions Medicine & Pharmacology Nursing Public Health

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Journal : Journal of Tropical Soils

 1 
Quality of Soil and Yield of Food Crops in Ultisols Due to Application of Manure and Source of Phosphate Fertilizer Soelaeman, Yoyo; Haryati, Umi
JOURNAL OF TROPICAL SOILS Vol. 17 No. 1: Januari 2012
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2012.v17i1.45-52

Abstract

Acid upland soil in Indonesia has a potential for agricultural development but it has constraints low of organic C and available P as well as the soil physical properties have been degraded. The use of manure and direct application phosphate rock (PR) was an alternative to improve land productivity and crop yields. The objective of the study was to examine the effects of manure and the sources of P on soil physical and chemical properties and yield of foods crop that was arranged on intensive cropping systems of upland rice + maize -/- cassava- mungbean. The experiment was carried out at Tamanbogo Station Farm, East Lampung since 2007 until 2009 using randomized completely block design with 3 replications. The treatments were (1) 10 Mg ha-1 manures + 1 Mg ha-1 of RP, (2) without manure + 1 Mg ha-1 of PR, (3) 10 Mg ha-1 manures + 100 kg ha-1 SP 36, and (4) without manure + 100 kg ha-1 SP 36. The results showed that the application of manure along with PR improved soil chemical and physical characteristics. Its improvement affected the yield of foods crops, hence the profit increased with B/C ratio between 2.88-3.60.
The Effectiveness and Valuation of Using Silt Pit to Reduce Erosion and Nutrient Loss of Andosol Masnang, Andi; Jannah, Asmanur; Andriyanty, Reny; Haryati, Umi
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.27-35

Abstract

The silt pit is a method of soil management that functions to accommodate and absorb surface runoff. The research aimed to determine the silt pit effectiveness for erosion reduction and nutrient loss. The research is located at 576 above sea level (asl) in Sukamantri village, Taman Sari district, Bogor Regency. The experiment used a randomized block design with three replications and a slope group. The treatments were R0 (without silt pit); R1 (silt pit); R2 (silt pit + mulch); R3 (silt pit + mulch + biopore tube), R4 (silt pit + mulch + biopore tube + vertical crop tube). The highest runoff-decreasing occurred on R4 treatment, which pressed down 29.38% runoff. The highest value of erosion-decreasing occurred on R2 as 68.74% and followed by effectiveness in reducing the loss of 71% Organic C, 76% available P, and 67% total N. The dry seeds peanut yield was around 0.54 - 0.86 Mg ha-1, dried pods was 0.96 - 1.33 Mg ha-1, and dried biomass was 5.16 - 6.23 Mg ha-1 and not significantly different between all treatments. This study recommends that farmers apply silt pit innovation technology with a combination of mulch, biopore, and mature green media because the incremental B/C ratio was 1.175. It is a good economic indicator for farmers.
Co-Authors ADI ABDURACHMAN ANDI MASNANG, ANDI Asmanur Jannah Awalya Awalya, Awalya Deddy Erfandi Edy Purwanto Gunawan Gunawan K MURTILAKSONO N SINUKABAN Pratomo, Hafidz Triantoro Aji Reny Andriyanty Sukarman Sukarman Yoyo Soelaeman yoyo soelaeman