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All Journal Journal of Tropical Soils Journal of Degraded and Mining Lands Management
Junita Barus
Balai Pengkajian Teknologi Pertanian Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Recommendation of Phosphate and Potassium Fertilizers for Maize at Five Locations in Lampung Barus, Junita; Murni, Andarias Makka
JOURNAL OF TROPICAL SOILS Vol 15, No 2: May 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i2.127-132

Abstract

Recommendation of Phosphate and Potassium Ferlilizers for Maize at Five Location in Lampung (J Barus and AM Murni):. Fertilizer recommendation in specific location will be related to fertilizers efficiency.  The study was conducted at five locations which were planted with corn minimal once a year, namely: (1) Sidowaras village,  Bumi Ratu Nuban Subdistrict, Lampung Tengah Regency; (2) Binjai Ngagung,  Bekri Subdistrict, Lampung Selatan Regency; (3) Watu Agung,  Kalirejo Subdistrict, Lampung Tengah Regency, (4) Balai Rejo, Kalirejo Subdistrict, Lampung Tengah Regency, and (5) Trimulyo, Tegineneng Subdistrict, Lampung Selatan Regency.  The soil samples were analyzed in the Research and Development Centre for Soil and Agroclimate Laboratory in Bogor.  The value of  P and K in soil were compared to the results of  correlation study using several extraction of P and K in Lampung.  Results of the study showed that the status of P was high for three location, medium for one location and low for one location.  K status was low for five locations. Phosphorus fertilizer  recommendation on the three locations with high level of P (Sidowaras, Binjai Ngagung, and Balai Rejo) was 75 kg ha-1 SP-36, on the middle P levels (Trimulyo) was 150 kg and on the low level of P (Watu Agung) was 300 kg. On the other hand, the recommendation for K fertilizer for all locations were 150 kg ha-1 KCl.
Improvement of several indicators of physical and biological properties of soil after adding crops biomass residues and yield of upland rice Barus, Junita; Lumbanraja, Jamalam; Sudarsono, Hamim; Dermiyati, D
Journal of Degraded and Mining Lands Management Vol. 6 No. 2 (2019)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2019.062.1625

Abstract

Returning and addition of organic material to soil is a key to protecting the soil, plants, and the environment. A study aimed to elucidate the effect of residual biomass application on some indicators of soil physical properties, abundance of earthworms and soil microbial activities was conducted in Kebun Percobaan (KP) Natar, BPTP Lampung from February to July 2017. The treatments were three types of crops biomass residues, i.e., maize stover, rice straw, and soybean stover (fresh or compost). The dosage rates were 0, 2.5, 5.0, 7.5, and 10 t/ha. The treatments were arranged in a randomized block design with three replicates. Upland rice (Inpago 9 variety) was planted after two weeks application of biomass residues treatments. The results showed that application of crops biomass residues improved bulkdensity and significantly increased soil water content at the high dose of biomass residues (7.5 or 10 t/ha). The amount and weight of earthworms with added of compost biomass was significantly correlated with soil water content (r values 0.491 and 0.376, respectively). The dose of biomass residues had a significant effect on soil respiration that the highest soil respiration was obtained in maize compost biomass treatment (at 12 weeks observation) was 31.7 and rice straw compost (at 8 weeks observation) which was 30.19 mg/hour/m2 C-CO2.
Improvement of growth and nutrient uptake of upland rice grown on degraded acid soil with the application of liquid organic fertilizer Barus, Junita; Endriani; Mustikawati, Dewi Rumbaina; Meithasari, Dian; Ernawati, Rr; Wardani, Nila; Tambunan, Reny Debora; Silalahi, Marsudin; Slameto
Journal of Degraded and Mining Lands Management Vol. 12 No. 1 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.121.6929

Abstract

This research aimed to determine the effectiveness of several types of liquid organic fertilizer (LOF) derived from plant waste and the dose of P fertilizer on the growth and yield of upland rice on degraded acid soil. The treatments consisted of two factors. The first factor (A) was several types of LOF consisting of A1 (control), A2 (LOF containing isolates of P-solubilizing bacteria), A3 (LOF-banana waste), and A4 (A2+A3). The second factor (B) was fertilizer doses consisting of B1 (50% of the recommended dose of P fertilizer), B2 (75% of the recommended dose of P fertilizer), and B3 (100% of the recommended dose of P fertilizer). The treatment combinations were arranged in a factorial randomized block design with three replications. The research results showed that applying either LOF-banana waste or the mixture of LOF-banana waste and LOF-containing isolates of P-solubilizing bacteria improved plant height, the number of tillers, and N and P uptake by the plant. The rice grain yields among the treatments were not significantly different, but the highest rice grain yield (139.8 g/pot) was obtained at the treatment of the mixture of LOF-P isolate + LOF-banana waste (A2+A3 treatments). The 75% of the recommended dose of P fertilizer was not significantly different from 100% P fertilizer with LOF on growth and yield upland rice and nutrient uptake by the plant.
Differences in soil properties and the rates of decomposition of plant biomass on non-organically and organically managed soils Pitaloka, Triana; Dulbari, Dulbari; Barus, Junita
Journal of Degraded and Mining Lands Management Vol. 12 No. 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.123.7673

Abstract

Organic farming has been advocated as a more environmentally sound and ecologically balanced alternative to the dominant agricultural model. This study compared the decomposition of plant biomass in organically and non-organically managed soil properties. The treatments consisted of   non-organic land (A) and organic land (B). Non-organic land used chemical fertilizers as the main fertilizer, and organic fertilizers were not always given. In organic land, all fertilizers given were organic fertilizers, and organic pesticides have been carried out over the last five years. The area of ??each land studied was approximately 1,000 m2 divided into five points diagonally. Observations were made on soil pH, organic C, total N, and P Bray, as well as the amount and weight of soil macrofauna. The decomposition rate of the dried Edamame soybean biomass in the soil was estimated using the litterbag method. A litterbag measuring 30 x 20 cm with a pore size of 2-3 mm was used for this study. Seventy grams of plant biomass were put into the litterbag and buried in the soil to a depth of 10-20 cm. Analysis of C and N contents in plant biomass was carried out before and after incubation in the soil. The results showed that soil chemical properties are better, and soil macrofauna is more abundant in organic than non-organic land. Soil fertility in organic land was characterized by a larger decomposition rate constant (k) and a faster decrease in C/N ratios. The decomposition rate constant (k) in organic soil was 0.171, and that in non-organic soil was 0.105.
Recommendation of Phosphate and Potassium Fertilizers for Maize at Five Locations in Lampung Barus, Junita; Murni, Andarias Makka
JOURNAL OF TROPICAL SOILS Vol. 15 No. 2: May 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i2.127-132

Abstract

Recommendation of Phosphate and Potassium Ferlilizers for Maize at Five Location in Lampung (J Barus and AM Murni):. Fertilizer recommendation in specific location will be related to fertilizers efficiency.  The study was conducted at five locations which were planted with corn minimal once a year, namely: (1) Sidowaras village,  Bumi Ratu Nuban Subdistrict, Lampung Tengah Regency; (2) Binjai Ngagung,  Bekri Subdistrict, Lampung Selatan Regency; (3) Watu Agung,  Kalirejo Subdistrict, Lampung Tengah Regency, (4) Balai Rejo, Kalirejo Subdistrict, Lampung Tengah Regency, and (5) Trimulyo, Tegineneng Subdistrict, Lampung Selatan Regency.  The soil samples were analyzed in the Research and Development Centre for Soil and Agroclimate Laboratory in Bogor.  The value of  P and K in soil were compared to the results of  correlation study using several extraction of P and K in Lampung.  Results of the study showed that the status of P was high for three location, medium for one location and low for one location.  K status was low for five locations. Phosphorus fertilizer  recommendation on the three locations with high level of P (Sidowaras, Binjai Ngagung, and Balai Rejo) was 75 kg ha-1 SP-36, on the middle P levels (Trimulyo) was 150 kg and on the low level of P (Watu Agung) was 300 kg. On the other hand, the recommendation for K fertilizer for all locations were 150 kg ha-1 KCl.
Soil Chemical Properties and Soybean Yield Due to Application of Biochar and Compost of Plant Waste Barus, Junita
JOURNAL OF TROPICAL SOILS Vol. 21 No. 1: January 2016
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2016.v21i1.1-7

Abstract

The importance to return organic matter to the soil has been widely recognized, especially to agricultural lands  that are low in organic matter and nutrients contents that will decrease the productivity of food crops. This study aimed to study the effect of  biochar (rice husk and corn cob biochar) and straw compost on soil chemical properties and yield of soybean (Glycine max (L.) Merr. The experiments were done in the laboratory and the field experiment at February–July 2015. The first study was laboratory test using a randomized block design with three replicates. Soil samples were ground and sieved to obtain the less than 4 mm fraction for the incubation experiment. A five kg  soil was mixtured with amandement treatments (A: control; B: Rice husk biochar 10 Mg ha-1 ; C: corn cob 10 Mg ha-1; D: straw compost 10 Mg ha-1; and E. Rice husk biochar 10 Mg ha-1 +  straw compost 10 Mg ha-1 ; F. corn cob biochar 10 Mg ha-1 +  straw compost 10 Mg ha-1) were filled into plastic pots. The treatments were incubated for 1 and 2 months. Soil samples measured were pH, Organic-C, Total-N, P2O5 (Bray-1), K2O (Morgan), Na, Ca, Mg, S, and CEC. The field experiment was conducted at Sukaraja Nuban Village, Batanghari Nuban sub district, East Lampung Regency. The treatments (similar too laboratory experiment) were arranged in a randomized block design with four replicates. Plot size was 10 m × 20 m, and soybean as crop indicators. The parameters observed were plant heigh, number of branches , number of pods per plant , number of seeds per plant, grain weight, and stover. The results of laboratory experiment showed that application of  biochar and compost improve soil fertility due to the increase in soil pH and nutrient availability for plant especially P2O5 and K2O available.  The treatment of  a rice husk biochar and compost mixture was better than single application to improve soil fertility and soybean yield. Apllication mixture husk biochar 10 Mg ha-1and straw compost 10 Mg ha-1 increased grain weight about 41% compost to control.Keywords: Biochar, compost, crop waste, soil chemical properties [How to Cite: Junita B, Dermiyati and H Sudarsono. 2016. Soil Chemical Properties and Soybean Yield Due to Application Biochar and Compost of Plant Waste. J Trop Soils 21: 1-7. Doi: 10.5400/jts.2015.21.1.1] 
Co-Authors Andarias Makka Murni Dermiyati, D Dewi Rumbaina Mustikawati Dian Meithasari Dulbari, Dulbari Endriani Ernawati, Rr Hamim Sudarsono . Jamalam Lumbanraja Marsudin Silalahi Nila Wardani, Nila Pitaloka, Triana Reny Debora Tambunan Slameto