Dose Of NPK Fertilizer Research Articles

Combined effects of provenance and NPK-fertilizer on nursery performance of kelor (Moringa oleifera) seedlings

Kelor (Moringa oleifera) is a superfood that serves potential benefits as a highly nutritious food. The research on kelor in Riau, Indonesia, is still very rare. This study aimed to determine the effect of a combination between provenances and doses of NPK-fertilizer on the growth of kelor seedlings in the nursery. The study was conducted from March to June 2020 in Kuok, Kampar regency, Riau. It was a factorial trial arranged in a split-plot design with three replications. Two provenances from Riau and NTT were arranged as the main plot. Four level doses of NPK-fertilizer, 5 g, 7 g, 9 g, and 0 g, were arranged as the subplot. Seedling height, diameter, survival, number of leaves, and leaf colour were observed. The interaction between P2 and F2 had the best effect on diameter at 3 MAS, while P2 and F4 had the best effect on survival at 1 MAS. The dose of 5 g NPK tended to have a better effect on the height, the number of leaves, survival, and leaf colour at 1 MAS. To stimulate the diameter growth, additional doses of NPK can be given after the kelor seedling reaches a minimum age of 3 MAS.

EFFECT OF COATING OF SYNTHETIC NPK FERTILIZER WITH PLANT GROWTH PROMOTIN BACTERIA (PGPB) ON GROWTH, YIELD OF RICE UNDER ALUM STRESS

Microorganisms in the rhizosphere soil play a key role in maintaining the soil fertility, which is a key for successful crop production to meet the increasing global food demand. The aims of this study were to boost growth attributes, yield and nutrient uptake of rice by different treatment combination of plant growth promoting bacteria (PGPB) and NPK fertilizer doses. The experiment was set up as one - way factorial design (Randomized Complete Block Design), including 4 different treatments with 4 replications spreading over two seasons: winter season 2018 to 2019. The current study was done on rice cultivar (Dai Thom 8) at Long An province, a product was formulated by coating NPK with three bacterial strains of PGPB (Plant Growth Promoting Bacteria) compared the control fertilizer to improve rice productivity under a alum environment. The effects of three PGPB strains (MC/LH 2/1, SP2/LH 2/1 and ED/LH 2/1) on vegetative growth, yield of rice were tabulated. Results showed that the treatment with ASS-MC/LH2/1 produced the highest significant values of plant height, effective tiller and number of panicles per hill. The highest yield was obtained from ASS-MC/LH2/1 treatment (6.14 ton/ha), followed by ASS-SP2/LH2/1 (5.82 ton/ha). The ASS-ED/LH2/1 and control treatments recorded the lowest yield.

Agronomic approaches to biofortify iron in tomato

The study was conducted to biofortify Fe in tomato fruit. Seven tomato varieties were tested in this study to screen out the potential variety for biofortification. Based on Fe concentrations of tomato fruit, BARI Tomato-14 was selected as test crop. Six different methods for Fe application viz. 100% as seedling priming, 50% in soil + 50% as foliar spray at seedling stage, 50% as seedling priming + 50% as foliar spray, 100% as foliar spray at seedling stage, 100% as foliar spray at flowering stage and 100% as foliar spray at fruiting stage @ 4 kg Fe ha-1. Iron was applied for 3 times at 7 day interval at all growth stages. Experiments were laid out in a completely randomized design (CRD) with 3 replications. Different application methods of Fe significantly influenced the growth, yield contributing characteristics, yield, biochemical constituents, nutrient concentrations and their uptake by BARI Tomato-14. The highest values of most of the studied parameters including Fe content and uptake were recorded from the application of 50% Fe as seedling priming + 50% Fe as foliar spray. Significant and positive correlations among the growth and yield contributing parameters due to the application of Fe were observed. Interestingly the highest vitamin-C, protein, lycopene, N, K and Ca contents and uptake were observed in 50% as seedling priming + 50% as foliar spray of Fe @ 4 kg ha-1. Except few most of the studied nutrients were negatively correlated with Fe. Iron was biofortified by 66.28 µg g-1 in BARI Tomato-14. Results suggest that application of 2 kg Fe ha-1 as seedling priming + 2 kg Fe ha-1 as foliar spray at seedling stage for 3 times at 7 days interval along with the recommended doses of NPK fertilizers in soil can be practiced for Fe biofortification in tomato.

Nutrient Management of Brahmi (Bacopa monnieri L.) Cultivars in Soil and Comparison with Hydroponically Grown Plants for Better Herbage Yield

A field experiment was conducted during kharif season of 2019-20 at Department of Agriculture, Khalsa College, Amritsar. It consisted of 10 treatment combinations which included two cultivars (CIM-Jagriti and Subodhak) and five nutrient management, viz. Vermicompost 10 t ha-1, FYM 20 t ha-1, Vermicompost 5 t ha-1+ FYM 10 t ha-1, Recommended dose of NPK fertilizers 100: 60: 50 kg ha-1 and Hydroponics (half-strength Hoagland solution). The results revealed that cv. Subodhak had produced more yield than cv. CIM-Jagriti but bacoside-A content was higher in the latter (16 percent higher). Among nutrient management, Brahmi grown in hydroponics (half-strength Hoagland solution) had significantly higher growth and yield attributes (viz. main shoot length, number of shoots, number of leaves, leaf area, fresh and dry weight) while FYM 20 t ha-1 recorded lowest growth and yield. Additionally, hydroponically grown brahmi had 7.5 percent more bacoside-A content than soil grown brahmi.

Study on economics of biochar application in cotton – maize – cowpea cropping sequence under integrated nutrient management

The highest net return was found in continuous application (two times) especially in the treatment biochar @ 10 t + 100 % NPK + FYM with Rs.67,928 ha-1 followed by biochar @ 10 t + 75 % NPK + FYM treatment with Rs.67,172 ha-1. The next higher net return was registered in biochar @ 10 t + 75 % NPK + FYM treatment under one time application with Rs. 62,970/-.Comparing the studies, the two times application (biochar @ 10 t ha-1 time-1) recorded an addition of Rs. 5,565/- only over one time application. Therefore one time application (biochar @ 10 t ha-1) considered to be an economically viable management technology than two times application in the cotton – maize – cowpea cropping sequence. One time conjoint application of biochar @ 10 t ha-1 along with 75 % recommended dose of NPK fertilizers and 12.5 t ha-1 of FYM i.e., (biochar @ 10 t + 75 % NPK + FYM) to cotton and following the general recommended practices for maize and cowpea to be the best combination suited for enhancing higher benefit cost ratio of 1.45 under cotton – maize – cowpea cropping system in Inceptisol (Vertic Ustropept) of Periyanaickenpalayam series of Coimbatore District.

EFFECTS OF NPK FERTILIZER AS FOLIAR SPRAY ON THE GROWTH AND YIELD OF SPINACH (SPINACIA OLERACEA, L.)

Sustainable agriculture is a vital aspect of long-term development, as it contributes to food security and the conservation of natural ecosystem biodiversity through the efficient use of agricultural inputs. It accomplishes this through enhancing agro-technology such as the foliar application of agrochemicals, which should be implied to ensure agricultural sustainability. The purpose of this study was to determine the effects of foliar fertilizer application on plant growth and nutrition over soil application. A pot experiment was conducted to study the growth and yield response of spinach (Spinacia oleracea, L.) to foliar application of Urea-TSP-MoP. There were five treatments comprising of control, recommended NPK fertilizer dose applied in soil, and 0.002% level foliar spray NPK ratios 19:19:19, 10:20:30, and 30:10:10 respectively. A randomized complete block design (RCBD) with three replications was used to arrange the treatments. Results indicated that plant height (cm), number of leaves (plant-1), leaf blade length (cm), leaf blade width(cm), leaf petiole length(cm) was higher in foliar treatments. However, fresh weight of leaf(g), the total biomass of plant(t/ha), dry weight of plant(g), fresh root biomass (g), and dry root biomass (g), were obtained significantly greater in recommended NPK fertilizer comparison to control and foliar treatments. Application of recommended NPK fertilizer dose in soil application produced the highest fresh leaf mass and total yield of spinach 26.03 t/ha followed by foliar treatments of 23.20 t/ha, 22.20 t/ha, 23.40 t/ha, compared to control where obtained yield about 16.77 t/ha. There were no significant differences between foliar application for yield parameters of spinach. It is concluded that foliar feeding produces nearly the same yield as conventional feeding and is more sustainable.

EFEKTIVITAS PENGGUNAAN PUPUK NPK PHONSKA DAN JUMLAH BENIH PER LUBANG TANAM TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN JAGUNG MANIS (Zea Mays Saccharatta Sturt)

Sweet corn commodities also experienced an increase in Indonesia. Consumption of sweet corn continues to increase in line with population growth and consumption patterns. Corn is a multi-functional plant that has many uses, and almost all parts of the plant can be used for various purposes, therefore corn has an important role in industrial development in Indonesia because it is a raw material for the food industry. The increase in consumption of corn, especially sweet corn, is very high because the demand for sweet corn is increasing from year to year. The demand for sweet corn is met in the need for action to increase production. Increased production of sweet corn can be done by preparing suitable conditions for plant growth and development, namely by improving cultivation techniques using high-yielding seeds, providing balanced fertilizers, eradicating pests and diseases, and good and correct harvest handling processes. The proper dosage of Phonska NPK fertilizer and the number of seeds per planting hole can increase the growth and production of sweet corn plants optimally. The results showed that Phonska NPK fertilizer level P3 (115.6 g/plot) had a significant effect on plant height, stem diameter, number of leaves, ear length, ear diameter, and total dissolved solids. The number of seeds per planting hole at level B1 (one seed per planting hole) had a significant effect on plant height, stem diameter, ear length, ear diameter, and total dissolved solids but had no significant effect on leaf number. The interaction of Phonska NPK fertilizer and the number of seeds per planting hole had a significant effect on stem diameter, ear length, and ear diameter but had no significant effect on plant height, number of leaves, and total dissolved solids.

PEMATAHAN DORMANSI BENIH DAN PERTUMBUHAN SEMAI KAYU ULES (Helicteres isora Linn.)

Screw tree is a shrub from family Malvaceae that has many benefits in pharmacy. Screw tree seed has very hard seed coat, so the seed must be treated before germination. The aim of this research was to assess the characteristic of fruit and seeds, effect of seed breaking dormancy, and effect of NPK fertilizer dosage on the growth of screw tree (Helicteres isora) seedlings. The results indicated that screw tree fruits belong to dry fruits with capsule form and has 5 follicles that has different direction. Screw tree seed is orthodox type that has 9 ̶ 36 seeds in one follicle with triangle and square shape. Germination technique in laboratory with soaking the seeds in hot water 100oC until the water cool for 48 hours treatment produced the best germination amounting to 65.0%. Germination technique in green house with soaking the seeds in hot water 100oC until the water cool for 24 hours treatment was the best germination amounting to 77.0%. Seedlings fertilized with 1 g NPK doses increased screw tree growth in diameter parameter of 6.35 mm and shoot-root ratio parameter of 3.9 compared to control.

PEMATAHAN DORMANSI BENIH DAN PERTUMBUHAN SEMAI KAYU ULES (Helicteres isora Linn.)

Screw tree is a shrub from family Malvaceae that has many benefits in pharmacy. Screw tree seed has very hard seed coat, so the seed must be treated before germination. The aim of this research was to assess the characteristic of fruit and seeds, effect of seed breaking dormancy, and effect of NPK fertilizer dosage on the growth of screw tree (Helicteres isora) seedlings. The results indicated that screw tree fruits belong to dry fruits with capsule form and has 5 follicles that has different direction. Screw tree seed is orthodox type that has 9 ̶ 36 seeds in one follicle with triangle and square shape. Germination technique in laboratory with soaking the seeds in hot water 100oC until the water cool for 48 hours treatment produced the best germination amounting to 65.0%. Germination technique in green house with soaking the seeds in hot water 100oC until the water cool for 24 hours treatment was the best germination amounting to 77.0%. Seedlings fertilized with 1 g NPK doses increased screw tree growth in diameter parameter of 6.35 mm and shoot-root ratio parameter of 3.9 compared to control.

Antioxidant Capacity and Nutritional Value of Potato Tubers (Solanum tuberosum L.) as a Dependence of Growing Conditions and Long-Term Storage

The aim of the study was to assess the interactive effect of the use of bio-fertilizer and organic matter brought into the soil, as well as to limit the use of mineral fertilization on the content of bioactive compounds in potato tubers cultivar ‘Satina’. The test results show a positive effect of the applied bio-fertilizer in all tested variants of organic fertilization (straw, fodder pea, manure) on the level of the tested compounds. Comparing the content of crude protein in tubers from plots where half the dose of mineral fertilization was applied, the use of bio-fertilizer increased the content of this component, especially after using straw. After 6 months of storage, organic fertilization had no significant effect on the protein content, while significant differences were found in tubers fertilized with mineral, in favor of the full dose of NPK fertilizers. The storage time increased the content of tyrosine, leucine, lysine, alanine, glutamic acid, and total AA, and also methionine, aspartic acid, and asparagine, while the content of isoleucine and phenyl-alanine decreased. The highest content of total polyphenols was found in tubers where the plots were covered with pea application, a full dose of mineral fertilizer, and the use of bio-fertilizer. Unfortunately, after 6 months of storage, potato tubers from plots fertilized with peas, especially those fertilized with half the dose of mineral fertilization and without the use of biofertilizer, significantly lost the most total polyphenols. Similar relationships were obtained for the level of chlorogenic acid in tubers, which is significantly correlated with the content of polyphenols, but only organic fertilization in the form of peas significantly increased the concentration of chlorogenic acid. On the other hand, the highest post-harvest antioxidant activity was characteristic of tubers from plots fertilized with manure, with a full dose of mineral fertilization and biofertilizer. During the 6-month storage, there was a decrease in the antioxidant capacity, on average 12.4% for the objects. This may indicate the influence of polyphenolic compounds as well as other antioxidants on the assessed trait.

ROLE OF BIOFERTILIZER TO INCREASE CAYSIM YIELD, N AND P RESIDUES AND THEIR PLANT UPTAKE

Consortium biofertilizer containing Nitrogen (N) Fixing Bacteria and Phosphate (P) Solubilizing Bacteria may substitute inorganic fertilizer in vegetable production. A greenhouse experiment was conducted to evaluate the effect of some combinations and doses of consortium biofertilizer and NPK compound fertilizer on available N and P in the soil, fresh weight of caysim (Brassica chinensis L. var. parachinensis.), and their uptake by caisim shoots after grown in low fertility soil. The experimental design was a randomized block design consisting of seven combinations and doses of consortium biofertilizer and compound fertilizer; and three control treatments. All treatments were repeated three times. The results showed that the combination of the which combination treatment of inorganic fertilizer and biofertilizer had a significant effect on the fresh weight of caysim shoots, available P and N and P uptake after harvesting compared to the biofertilizer treatment alone or without fertilization. Several treatments of combined doses of biofertilizers and NPK compound fertilizer produced the same yield as NPK compound fertilizer alone. The application of 300 kg/ha of compound fertilizer combined with 3,75 L/ha of biofertilizer enabled to increase the yield up to 16% compared to NPK fertilizer alone. This experiment explained that inoculation of biofertilizers can reduce the dose of NPK fertilizer to maintain yield, available P residue in soil and P uptake

Vegetative Growth of Sweet Corn (Zea mays L. Saccharata) Due to Difference Doses of Horse Manure Compost and NPK Fertilizer

Sweet corn has a sturdy and strong stem growth and is very suitable for cultivation in tropical climates. Research on the effect of horse manure compost combined with NPK fertilizer on the growth of sweet corn has been done with the aim of obtaining information: (1) the effect of different doses of horse manure compost on the growth of sweet corn, (2) the effect of different doses of NPK fertilizer on the growth of sweet corn, (3) The interaction effect of horse manure compost and NPK fertilizer on sweet corn vegetative growth. The application of NPK fertilizer was carried out with 4 treatment doses while the application of horse manure compost was carried out with 5 treatment doses. In this study, information was obtained (1) the application of NPK fertilizer increased the growth of sweet corn, (2) the application of horse manure compost increased the growth of sweet corn, (3) There was no increase in growth of sweet corn due to the combination treatment of NPK fertilizer and horse manure compost

Effect of media size and dosage of NPK fertilizer on growth and yield of upland rice lines in polybags

This study aims to determine the appropriate media size and dose of NPK fertilizer for the growth and yield of upland rice plants. The research was carried out from October 2020 to January 2021, in the village of Sungai Hitam, Pondok Kelapa District, Central Bengkulu Regency. using the RAKL design with 3 treatments and 3 replications. The main treatments of 3 levels were polybag media sizes 3 kg, 4 kg, 6 kg, and the 3 levels of NPK fertilizer dosage were 100kg/ha NPK fertilizer dose, 150kg/ha NPK fertilizer dose, and 200kg/ha NPK fertilizer dose. The results showed that the size of the growing media had a significant effect on plant vegetative growth, but did not affect the yield and yield of upland rice in polybag cultivation. The dose of NPK fertilizer affects the growth and yield of upland rice plants. The best results were obtained with fertilization with a dose of 200 kg NPK/ha. The addition of a fertilizer dose of up to 200 kg NPK/ha will be followed by an increase in yield and yield components for each size of the media used

Effect of Variety and Dosage of Pearl NPK Fertilizer on Growth and Yield of Hybrid Red Chili

This study aims to see the growth and yield of hybrid red chili with various varieties and the dose of NPK Mutiara fertilizer and to see the interaction between hybrid red chili varieties and the dose of NPK Mutiara fertilizer. This study used a factorial randomized block design (RAK) consisting of 2 factors, namely the red chili variety factor (V) which consisted of 3 types: V1 = Kastilo F1, V2 = Laju F1, and V3 = Lado F1. The combination factor of NPK fertilizer (P) consisted of 3 levels: P1 = 19 g/plant, P2 = 23 g/plant, and P3 = 28 g/plant. Parameters observed included flowering age (Days), stem diameter (cm), number of chilies per plant (fruit), chili length (cm), chili diameter (cm), fresh chili weight per plant (gr), and fresh fruit weight. per plot (gr). The results showed that hybrid red chili varieties had a significant effect on the parameters of the number of chilies per plant, the weight of fresh chilies per plant, and the weight of fresh chilies per plot. The best results were obtained in the V2 treatment (F1 Laju). The dose of NPK Mutiara had a significant effect on the parameters of flowering age and chili length. The best results were obtained in the P3 treatment (28 g/plant). The interaction of hybrid red chili varieties with NPK Mutiara fertilizer had a significant effect on chili length parameters and the number of chili peppers per plant. However, it had no significant effect on flowering age, stem diameter, chili diameter, fresh chili weight per plant, and fresh chili weight per plot. The best interaction was found in the V2P3 treatment (F1 rate + 28 g/plant).

TANGGAP KARAKTER MORFOFISIOLOGI JAGUNG TERHADAP KOMPOS LIMBAH JAGUNG DAN NPK DI TANAH ULTISOL

Maize ( Zea mays L. ) is a very sensitive crop plant towards fertilization. Sufficient macro and micronutrients in the soil must be available during the maizes growth phase. Providing nutrients for maizes can be done by adding organic or inorganic fertilizers. The aim of this research is to determine the effects of interactions from maize waste composts and NPK fertilizers on the morphophysiological characters of maizes in ultisol soil. The research method used was a Randomized Block Design (RBD) with 2 factorials, the dose of maize waste composts (K) and the dose of NPK fertilizers (P). The result showed that the factor K treatment is significantly affected the growth and the yield components of maizes. The level k2 treatment (20 tons ha-1 of maize waste composts) generally gave the highest mean for maize cobs length and diameter, seeds per maize cob and per plot. Key W ords: yield, maize, compost, morphophysiology, ultisol.

Pertumbuhan dan Hasil Dua Varietas Ubi Kayu pada Empat Dosis Pupuk Npk di Lahan Pasang Surut Kalimantan Selatan

Tidal acid land is a potential land for cassava development. However, the development of cassava in tidal land faces many obstacles, one of which is the low availability of nutrients. This study aimed to determine the effect of NPK fertilizer in increasing the growth and yield of cassava in tidal land. The experiment consisted of two factors, the first factor was two varieties of cassava and the second factor was four levels of NPK fertilizer doses. The experiment was applied in a strip plot design with variety as the horizontal factor and the level of NPK fertilizer as the vertical factor and repeated three times. The growth parameters observed consisted of plant height, stem diameter, plant biomass weight, number of large tubers, number of small tubers, large tuber length, length of small tuber, the diameter of large tuber, the diameter of small tuber, the total number of tubers, the weight of large tuber, the weight of tuber small, and total tuber weight. The results showed that fertilizer application was effective in increasing vegetative growth and yield of cassava but increasing the dose of fertilizer was not effective in increasing the growth and yield of cassava. Differences in varieties generally did not show differences in vegetative growth and some yield components but still showed different results in the components of tuber length and total tuber weight.

I​nfluence of Treated POME Sludge Vermicomposting on Soil Physicochemical Properties and Maize Growth Performances

Background: Transforming the abundance of palm oil mill effluent (POME) sludge into beneficial substances such as an organic amendments is vital in the recycling of waste. Vermicomposting from treated POME sludge (TPS) was evaluated on the effect of soil physicochemical properties, crop performances and to determine the best treatment effect on the biomass of the hybrid grain maize (Zea mays L.). Methods: The experimental layout was designed in a randomized complete block design (RCBD). The grain maize cultivated in Bungor series soil (Ultisol) comprising of (T1) control (NPK fertilizer), (T2) 1 kg of vermicompost, (T3) 2 kg vermicompost, (T4) 1 kg TPS and T5 (2 kg TPS) with six replications, for a period of 100 days from June to September 2019. Half of the NPK fertilizer dosage applied from the recommended practices. Result: The treatments with 50% reduction of NPK rate significantly (p less than 0.05) affected soil physicochemical properties. The dry matter production, crop performance analysis (net photosynthesis, stomata conductance and transpiration rate) and root weight density were also increased significantly using 2 kg of vermicompost treatment. Vermicompost application demonstrated the best treatment effect on soil properties and grain maize productivity. Utilization of POME sludge waste into organic amendment through vermicomposting approach would become very crucial practices to be adopted in reducing the abundance waste.

The effectiveness of technology packages of 15 biofertilizer formulas to increase soybean productivity on acidic soils

The potentcy of acidic soils for soybean development in Indonesia is quite large. However low of soil fertility and microorganisms population become contrains for achieving high productifity of soybean. The aim of this research is to determine the effectiveness of technology packages for 15 biofertilizers formula to increase soybean productivity in acidic soils. The research was conducted during the end of rainy season in South Kalimantan. The soil use in the study had pH 5.2 and soil Al-saturation 34.2%. The reasearch was arranged in a randomized block design, three replications consisted of 20 treatmens, namely: 1) 0 NPK, 2) 50% NPK, 3) 50% NPK +2 t/ha organic fertilizer 4) 70% NPK, 5) 100% NPK (100 kg urea + 100 kg SP36 + 100 kg KCl/ha), 6) Iletrisoy+ Biovam+Starmix, 7) Iletrosoy Plus, 8) Beyonic, 9 Biotrico, 10) Probio New, 11) RhizoBIOST, 12) Bio-SRF, 13) Biopim, 14) BioMIGE, 15) Biocoat, 16) FajarSOYA, 17) Rhizobion, 18) Agrizone, 19) Rhizoplus, and 20) BISRF. For each biological fertilizer, 50-75% of recommended NPK fertilizers were given at 15 days after planting. The results indicated that combination of Biovam + Iletrisoy + Startmix biofertilizers, Iletrisoy plus, Biotricho, Probio New, Bio Mige, and Fajar SOYA were effective for increasing soybean productivity on acidic soils. These biological fertilizers + 50% recommended NPK + 1.5 t/ha organic fertilizer increases pods number, and soybean productivity more than 10% compared to the recommended NPK fertilizer dosage whic was 1.81 t/ha. Several of these biological fertilizers have good prospects to be developed as bio-fertilizers for soybeans in acidic soils.

Pengaruh Pemberian Dosis Pupuk NPK dan Jenis Pupuk Hayati terhadap Pertumbuhan dan Produksi Tanaman Bawang Merah (Allium ascalonicum L.)

Shallots (Allium ascalonicum L.) is one of the leading vegetable commodities used as food seasoning and traditional medicine. This study aims to see the effect of providing various doses of NPK fertilizer and types of biological fertilizers on the growth and production of shallot plants. This study used a randomized block design (RAK) arranged in a factorial (4 x 2). The first factor is the NPK fertilizer dosage which consists of four levels, namely: N0= 0% (without NPK fertilizer), N1= 50% (25 g/m2), N2= 100% (50 g/m2), and N3= 150% (75 g/m2). The second factor is the type of biological fertilizer which consists of two levels, namely: H1= Grikulan plus fertilizer and H2= EM4. The results showed that the NPK fertilizer dosage treatment up to a dose of 75g/m2 gave the best results on plant growth and development, including the number of leaves, plant height, fresh tuber weight per plant, wind dry tuber weight per plant, and wind dry tuber weight per m2. The growth and development of shallot plants with the application of Grikulan biological fertilizers were better than those of EM4 biological fertilizers. Treatment of NPK fertilizer dosage of 150% or equivalent to 75 g / m2 supplemented with the application of Grikulan plus fertilizer results in higher production, namely the weight of dry tubers per m2 reaching 1674.33 g or equivalent to 11.72 tonnes/ha. Keywords : EM4, Grikulan plus, shallots,NPK, yield

Pengaruh Dosis Pupuk NPK dan Jenis Pupuk Pelengkap terhadap Pertumbuhan dan Produksi Cabai (Capsicum annuum L.)

This study aims to determine the effect of NPK dosage, types of complementary fertilizers and their interactions on the growth and production of chilies pepper. This research was conducted in Sukabanjar Village, Gedong Tataan, Pesawaran Regency from July-December 2020. The experimental design used in this study was a two-factor randomized block design (RBD), namely the dose of NPK fertilizer and the type of complementary fertilizer (4 × 2) with 3 replications. Each plot consisted of 8 plants so that there were 192 plants. The first factor was NPK Mutiara fertilizer dose (16:16:16)(N) with N0:0 g/plant, N1:10 g/plant, N2:20 g/plant and N3:30 g/plant. The second factor is the type of complementary fertilizer (P) with P1 Plant Catalyst and P2 Gandasil D. Homogeneity of variance was tested by Bartlett test, additivity was tested by Tukey test. Then it was continued with analysist of variance and with the Least Significant Difference test (LSD) at the 5% level. Treatment of NPK fertilizer dosage significantly increases growth and yield. The interaction between the NPK dosage of 20g/plant and type of complementary fertilizers gave highest plant height (95.58 cm). The best combination was NPK dosage of 20 g/plant and Plant Catalyst fertilizer that gave highest yield (753,17 g/plant equivalent 15.06 ton/ha at population 20,000 plant/ha.Keywords : Chili pepper, complimentary fertilizer, growth, NPK, yield