EFEKTIFITAS PEMBERIAN PUPUK HAYATI TERHADAP PERTUMBUHAN DAN HASIL PADI GOGO PADA TANAH KERING

On-farm experimental were conducted in dry land of Banyusri villages, Wonosegoro sub district, Boyolali district in 2013/2014 WS. Randomizied block designed was used with four replications. Eight treatments consisted of fertilizers based on Dry soil test kit as control (P1), 50% NPK fertilizers recommended + Probio (P2), 50% NPK fertilizers recommended + Remicer (P3), 50% NPK fertilizers recommended + Starmik + 2 t FYM/ha (P4), 50% NPK fertilizers recommended + Agrimeth (P5), 50% NPK fertilizers recommended + Biovam plus (P6), 50% NPK fertilizers recommended + Glyocompoct (P7), 50% NPK fertilizers recommended (P8), 50% NPK fertilizers recommended + 2 t FYM/ha (P9). Parameters were observed i.e. plant growth (plant height and tiller numbers per hills), rice yield (converse plot sized 2.5 m x 2.5 m in hectares at 14 % water contents) and farmer respons on biofertilizers used were evaluated. Research resulted showed thats (a) the applicaton of biofertilizers such as Probio, Glyocompost and Starmix were combined to 50% NPK fertilizers recommended gave the rice yield same with combined to NPK fertilizers recommended, its means that usage recommendation of 50% NPK fertilizers combined to third biofertizers able to 50% NPK fertilizers efficient. (b). The farmer respons to usage of biofertilizers applied showed that (b1) 83.3% cooperator farmers positive respons in application of biofertilizer. (b2) 61.20 % farmers most easierly on biofertilizers applied. (b3) 94,4% farmers has benefit from biofertilizers applied. (b4) 83,3 % cooperators farmer able to buy biofertilizers in the markets. (b4) Cooperator farmers to select in liquid forms of biofertiliers with Rp 10.000 per sacheet prices. But if solid type of biofertilizers with prices Rp 1.000,- per kg. Keywords : efectivness, biofertilizer, gogo ric

Peningkatan Ketersediaan Phosphat pada Tanah Masam Melalui Inokulasi BPF dan Penambahan Bahan Organik

Minarsih S, Samijan S, Arianti FD. 2020. Increasing the availability of phosphate in acid soils through inoculation of phosphate solubilizing bacteria and adding organic matter to the soil. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-8 Tahun 2020, Palembang  20 Oktober 2020. pp. xx.  Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Phosphate is one of the macro elements whose availability is limited in acid soils because it is bound by soil minerals. Phosphate solubilizing bacteria are able to dissolve phosphate bound by soil minerals so that its availability increases, the addition of organic matter is also able to increase the availability of phosphate through organic acids resulting from its decomposition. This study aims to determine the types of phosphate solubilizing bacteria and kinds of organic matter that can increase the availability of phosphate in the soil. The experiment was carried out in the greenhouse of Sebelas Maret University Surakarta. Using a completely randomized design with 2 factors. Factor I was the inoculation of Phosphate Solubilizing Bacteria consisting of 3 levels, namely without inoculation of phosphate solubilizing bacteria (I0), Bacillus subtilis inoculation (I1), and Pseudomonas fluorescent inoculation (I2). The second factor are the type of organic material consisting of 4 levels, namely: no organic matter (B0), rice straw (B1), Tithonia diversifolia (B2), and Leucaena leucochepala (B3). The results showed that the use of Tithonia diversifolia organic matter independently proved to be the most effective in increasing available P in the soil by 261%. Bacillus subtilis combined with organic rice straw was able to increase the availability of P by 169%, then followed by the combination of Bacillus subtilis with organic material Tithonia diversifolia was able to increase P by 155% and the combination of Bacillus subtilis with Leucaena leucochepala increased P by 23%

Efektifitas Pemberian Pupuk Hayati terhadap Pertumbuhan dan Hasil Padi Gogo pada Tanah Kering

On-farm experimental were conducted in dry land of Banyusri villages, Wonosegoro sub district, Boyolali district in 2013/2014 WS. Randomizied block designed was used with four replications. Eight treatments consisted of fertilizers based on Dry soil test kit as control (P1), 50% NPK fertilizers recommended + Probio (P2), 50% NPK fertilizers recommended + Remicer (P3), 50% NPK fertilizers recommended + Starmik + 2 t FYM/ha (P4), 50% NPK fertilizers recommended + Agrimeth (P5), 50% NPK fertilizers recommended + Biovam plus (P6), 50% NPK fertilizers recommended + Glyocompoct (P7), 50% NPK fertilizers recommended (P8), 50% NPK fertilizers recommended + 2 t FYM/ha (P9). Parameters were observed i.e. plant growth (plant height and tiller numbers per hills), rice yield (converse plot sized 2.5 m x 2.5 m in hectares at 14 % water contents) and farmer respons on biofertilizers used were evaluated. Research resulted showed thats (a) the applicaton of biofertilizers such as Probio, Glyocompost and Starmix were combined to 50% NPK fertilizers recommended gave the rice yield same with combined to NPK fertilizers recommended, its means that USAge recommendation of 50% NPK fertilizers combined to third biofertizers able to 50% NPK fertilizers efficient. (b). The farmer respons to USAge of biofertilizers applied showed that (b1) 83.3% cooperator farmers positive respons in application of biofertilizer. (b2) 61.20 % farmers most easierly on biofertilizers applied. (b3) 94,4% farmers has benefit from biofertilizers applied. (b4) 83,3 % cooperators farmer able to buy biofertilizers in the markets. (b4) Cooperator farmers to select in liquid forms of biofertiliers with Rp 10.000 per sacheet prices. But if solid type of biofertilizers with prices Rp 1.000,- per kg. Keywords : efectivness, biofertilizer, gogo ric

Kajian Bahan Humat untuk Meningkatkan Efisiensi Pemupukan Npk pada Bibit Kelapa Sawit di Tanah Sulfat Masam

The opportunity of agribusiness palm oil plantation related to the increased of plam oil demand in the world. The business of palm oil plantation in Indonesia now is facing the limited land resources. Development of palm oil plantation to sub optimals lands such as acid sulphate soils were estimated in 2.0 millions hectares in Indonesia. The palm oil cultures in acid sulphate soils need the appropriate of inputs and efficiency based in land characteristics. Glass house experiments was conducted with randomized complete designs with three replications. An experiments consisted of two sub aactivities i.e combination of NPK dosage with humic matterial application methods. Each treatment consisted 30 plant/polybag so that totals 720 plants/polybag, Sub activity 1 (Humic matterial coated on NPK fertilizers) : a) 100 % NPK + no humic coating 0 % , b) 100 % NPK + humic coated 0,5 %, c) 75 % NPK + humic coated 1,0 %, d) 50% NPK + humic coated 2%. Humic applicated in % (v/w). Sub activities 2 (application of humic liquid was sprayed). : were kind of four of treatments (1) 100 % NPK 100 % with out humic, (2) 100 % NPK + humic (liquid) 3 cc/plant, (3) 75 % NPK + Humic (liquid) 3 cc/plant, and (4) 50% NPK + humic (liquid) 6 cc/plant.. Application of humic was sprayed suited in on each treatments 20 times equivalent 1 – 2 liters, humic acid was diluted in 20 l water was applicatid in polybags eachs 3 – 4 weeks. Parameter were observed in soil chemical characteristics before planting, plants growth (plant height, plant diameters and leaf numbers per plant) and leaf macronutrient contents such as N, P, K, Ca and Mg. Data were collected by using variant analized. Differents of the treatments were tested by DMRT0.05. Result showed that (1) Fertilizer appplied 75% NPK recommended + liquid humic 1% (v/w) (coated) better than to increase of plant height, plant diameters and leaf numbers of palm oil at 6 and 7 month ago compared to others.(2) Applicaton of 75% NPK with sprayed 3 cc humic per plant will increased the plant height most, plant diameters and leaf numbers at age of 6 and 7 month ago than the others. (3) Applivcation of humic matter 1% (v/w) (coated) at 75 % NPK better than application of 75 % NPK applied + humic (liquid) 3 cc per plant that was sprayed in the soil polybag on plant height, diameter plant and number of leaf per plant and to increase of N, P and K content of the plant. Key words : Humic matter, fertilizer, palm oil, acid sulphate soils

Improved Crop Management on Open-Pollinated Maize (OPV) in The High Upland of Central Java Indonesia

In the highlands of Central Java, maize remains a staple food, but low yields are common due to limited use of local varieties and cultivation techniques. To address this, a study was conducted in Bojong District, Central Java, focusing on intensified maize cultivation through improved varieties, spacing, and fertilization. On-farm experiments were carried out, comparing different treatments with recommended practices. Sukmaraga maize showed the highest yields when following suggested spacing and fertilization, outperforming local yellow and white varieties significantly. The study revealed that intensification using high-yielding varieties and proper techniques could increase maize yields by 108-172% for different varieties. For local yellow and white maize, the yield increase was about 134% and 113%, respectively. Overall, adopting high-yielding varieties and improved techniques resulted in a remarkable average yield increase of 135% compared to traditional farmer practices. This research highlights the potential to enhance maize productivity in the Central Java highlands and improve food security in the region

Effectiveness of Bio-Phosphate Fertilizer on Growth Performance and Production of Irrigated Lowland Rice

Intensive agricultural land with a limiting factor of acidity often has a great degree of phosphate elements but is not accessible to plants. The utilization of bio-phosphate fertilizer (Bio-P) is an effort to enhance the available P for plants to support sustainable agricultural development. This research evaluated the effectiveness of Bio-P on the growth performance and production of irrigated lowland rice. The research was accomplished in Gemolong District, Sragen Regency, Central Java, Indonesia, from May to October 2021. The research was set in a randomized block design corresponded of ten treatments and four replications. The treatment corresponded of fertilization according to the recommended dose, fertilization according to the recommended dose + Bio-P, existing farmers' fertilization + Bio-P, and without fertilization. The data observed included plant growth, yield components, production, and agronomic and economic feasibility assessments. The findings revealed that fertilization treatment according to the recommended dose + Bio-P and the existing farmers' fertilization + Bio-P did not significantly affect plant growth and yield. The extension of 10 kg ha-1 Bio-P with existing farmers' fertilization produced the highest effectiveness value of 3.56 with a profit of IDR 25,400,400 ha-1 and the highest RAE value of 110.25%