scholarly journals Effects of organic fertilizer levels and spray rates of organic solution on tomato yield (Lycopersicum estulentum Mill.)

2020 ◽  
Vol 19 (01) ◽  
pp. 16-23
Author(s):  
Loan T. Nguyen
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Average Weight ◽  
Organic Solution ◽  
Tomato Yield ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
National University ◽  
Four Levels ◽  
Fertilizer Rates

The objective of the experiment was to evaluate effects of organic fertilizer levels and spray rates of organic solution on tomato yield. A 4 x 3 factorial field experiment arranged in a randomized complete block design was conducted in Spring - Summer season 2018 at the experimental site of Faculty of Agronomy (Vietnam National University of Agriculture). The two factors included (1) organic fertilizer rates with four levels (0, 11, 13.5, & 16 tons/ha) and (2) sprayed concentration of HB101 organic solution with three levels (0, 0.15, & 0.3 mL/L). The amount of water used for 1 ha was 10.000 L. The experimental results showed that increased amounts of organic fertilizer and HB101 solution doses positively increased the number of flowers per inflorescence, number of inflorescences per plant, number of fruits per plant, average weight of fruit, and tomato yield. Meanwhile, combinations of 16 tons/ha of organic fertilizer and HB101 solution at the concentrations of 0.3 mL/L and 0.15 mL/L gave the highest tomato yield with 44.0 tons/ha and 42.6 tons/ha, respectively. The highest profit margin obtained with the treatment of nonapplication of organic sources was 3.8. However, the highest economic profit was obtained with the treatment of 16 tons/ha of organic fertilizer combined with 0.15 mL/L HB101.

scholarly journals Respon Pertumbuhan Tanaman Cengkeh (Syzygium aromaticum (L.) Merr. Perr.) dengan Aplikasi Pupuk Organik-Anorganik dan Triakontanol

2020 ◽  
Vol 47 (3) ◽  
pp. 326-332
Author(s):  
Syahdin Launuru ◽  
Ade Wachjar ◽  
Dan Ani Kurniawati
Keyword(s):  
Leaf Area ◽  
Nutrient Dynamics ◽  
Block Design ◽  
Organic Fertilizer ◽  
Inorganic Fertilizer ◽  
Syzygium Aromaticum ◽  
Chlorophyll B ◽  
Recommended Dosage ◽  
Randomized Complete Block Design ◽  
Two Factors

Application of right dosage of fertilizer and concentration of plant growth regulator are supporting factor of clove growth. This study was aimed to obtain the best combination of organic-inorganic fertilizer, the best triacontanol concentration and both interactions for increasing clove growth. This study used a Randomized Complete Block Design (RCBD) with two factors. The first factor was the organic-inorganic fertilizer dosage package that consisted of 6 levels, i.e no fertilizer, 100% recommended dosage of inorganic fertilizer (r.d.i.f), 25% recommended dosage of organic fertilizer (r.d.o.f) + 75% r.d.i.f, 50% r.d.o.f + 50% r.d.i.f, 75% r.d.o.f + 25% r.d.i.f, 100% r.d.o.f. The second factor was the concentration of triacontanol that consisted of 3 levels, i.e no triacontanol, 2 mg L-1 and 4 mg L-1. The results showed that the application of 25% r.d.o.f + 75% r.d.i.f produced the best clove growth, but it was not significantly different from the combination treatment of the two other types of fertilizer as indicated by the greatest improvement on stem diameter, branches number, leaf area, chlorophyll a, chlorophyll b, total chlorophyll and carotenoids. Clove plants did not respond to the application of triacontanol at a concentration of 2 mg L-1, but gave a negative response to the application of triacontanol 4 mg L-1 on the plant height and leaf area variables. The interaction of the two factors did not have significant effects on all variables. Keywords: chlorophyll, morphology, nutrient dynamics, physiology, vegetative growth  

scholarly journals Pengaruh Pemberian Hasil Samping Pembuatan Biogas sebagai Pupuk Organik Cair terhadap Pertumbuhan Bawang Merah (Allium cepa L.)

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Lailatul Mufairoh ◽  
Saimul Laili ◽  
Tintrim Rahayu
Keyword(s):  
Allium Cepa ◽  
Block Design ◽  
Organic Fertilizer ◽  
Liquid Waste ◽  
Fertilizer Application ◽  
Organic Fertilizers ◽  
Randomized Block Design ◽  
Allium Cepa L ◽  
Two Factors ◽  
Four Levels

The shallots production enhancements, an improvement in cultivation techniques and organic fertilizer is needed. Biogas liquid waste is one of the organic fertilizers that can be used in plants. The benefit of biogas liquid waste is that it can improve soil properties and produce agricultural products that are safe for health. The purpose of this study was to determine the effect of dose and time of bio-slurry fertilizer on the growth of red onion (Allium cepa L.). Research used a randomized block design consisting of two factors. The first factor is the time of fertilizer application which consists of four levels, namely: control, W1, W2 and W3. The second factor is the administration of bio-slurry fertilizer dose of 25 ml, 50 ml, 75 ml and 100 ml. The results showed that the application of bio-slurry fertilizer affected the growth of shallots. The treatment of D4W1 (fertilizer every week with a dose of 100 ml) showed the best results in each parameter, namely plant height, leaf number, leaf area, root length, wet weight and dry weightABSTRAKPeningkatan produksi bawang merah diperlukan adanya perbaikan teknik budidaya  dan pemberian pupuk organik. Limbah cair biogas adalah salah satu pupuk organik yang dapat digunakan pada tanaman. Manfaat limbah cair biogas adalah  dapat memperbaiki sifat-sifat tanah dan menghasilkan produk pertanian yang aman bagi kesehatan. Tujuan dari penelitian ini yaitu untuk mengetahui pengaruh dosis dan waktu pemberian pupuk bio-slurry terhadap pertumbuhan bawang merah (Allium cepa L.) Penelitian menggunakan Rancangan Acak Kelompok yang terdiri dari dua faktor. Faktor pertama yaitu waktu pemberian pupuk yang terdiri dari empat taraf yaitu: kontrol, W1, W2 dan W3. Faktor kedua adalah pemberian dosis pupuk bio-slurry yaitu 25 ml, 50ml, 75 ml dan 100 ml. Hasil penelitian menunjukkan bahwa pemberian pupuk bio-slurry berpengaruh terhadap pertumbuhan bawang merah. Perlakuan D4W1 (pemberian pupuk setiap minggu dengan dosis 100 ml).menunjukkan hasil yang terbaik pada setiap parameter yaitu tinggi tanaman, jumlah daun, luas daun, panjang akar, berat basah dan berat kering.Kata kunci: Pupuk Bio-Slurry, Bawang merah (Allium cepa L.), waktu pemberian pupuk

scholarly journals Optimal Training of Apple Trees for High-density Plantings

HortScience ◽  
2000 ◽  
Vol 35 (4) ◽  
pp. 555D-555c
Author(s):  
Gerald R. Brown ◽  
Dwight E. Wolfe
Keyword(s):  
Block Design ◽  
Fruit Size ◽  
Average Weight ◽  
Trickle Irrigation ◽  
Training Systems ◽  
Randomized Complete Block Design ◽  
Slender Spindle ◽  
Early Production ◽  
Four Levels ◽  
Research And Education

An experiment was initiated at the Univ. of Kentucky Research and Education orchard, Princeton, Ky., to determine the training practices needed to obtain early production and optimal fruit size from trees trained to either the slender spindle or the French axe system on vigorous sites. One-hundred-eighty trees (five rows, 32 trees per row) of `Golden Delicious' on M.9 rootstock were planted in May 1997, in a randomized complete-block design with eight treatment combinations, consisting of two training systems and four levels of training intensity. Trunk circumference averaged 61 cm at planting and did not vary significantly among rootstocks. A trellis was constructed, and trickle irrigation was installed. All trees are currently alive. Each season, over half the total time spent training the trees was spent during the first 5 weeks the trees were trained. About 2 minutes per week was needed to train each tree during the first 5 weeks, but only 45 seconds per week was needed in the sixth through the 16th week. Trunk circumference, yield, and average weight per fruit did not vary significantly in the analysis of variance. Training per kilogram of fruit averaged 4.2 minutes.

scholarly journals EFFECTS OF FOLIAR APPLICATION OF ORGANIC AND GROWTH PROMOTER BIOZYME ON GROWTH OF WOLLY PEACH "RED JUNE" 2- leaves nutrients concentrations

2016 ◽  
Vol 47 (3) ◽  
Author(s):  
Al-Karam & Al-Biaty
Keyword(s):  
Foliar Application ◽  
Block Design ◽  
Organic Fertilizer ◽  
Factorial Experiment ◽  
Growth Promoter ◽  
The Third ◽  
Randomized Complete Block Design ◽  
Four Levels

A Factorial experiment within Randomized Complete Block Design was coducted during 2014, 2015 on wolly peach seedlings C.V Red June, which grafted on the seeded apricot , at the Dept. of Horticulture – Coll. Of Agric. – Univ. of Baghdad. The objective of this experiment was to study the effect of foliar application The seedlings were sprayed with four levels of organic fertilizer Botryfun is 0, 3, 4 and 5( Ml.ltr-1) for each level by the symbol F0, F1, F2 and F3 respectively, growth prpmoter Biozyme three levels are 0, 2 and 4(Ml.ltr-1) are indicated G which is G0, G1 and G2 respectively, recorded most of the treatment were significant differences for the control, were the highest values of organic fertilizer in the treatment of F3 to all the elements reaching nitrogen 1.10 and 1.57 %, phosphorus 0.37 and 0.64%, potassium 2.16 and 2.66 %, iron 244.89 and 245.11 ppm, manganese 64.60 and 73.67 ppm, and zinc 105.33 and 128.67 ppm for two seasons respectively. And gave a growth promoter at the third focus G2 highest rates in the stock content from the elements, as it gave the nitrogen 1.10 and 1.54%, phosphorus 0.37 and 0.49%, potassium 2.01 and 2.57%, manganese 61.33 and 72.67 ppm,  and zinc 100.00 and 127.67 ppm, except iron of both seasons. When overlap outperformed many treatment morally for the control were treated overlap G2F3 with the highest value for all nutrients studied, which amounted to 1.12 and 1.70% nitrogen, 0.43 and 0.50.% Phosphorus, 2.22 and 2.78% potassium, 241.67 and 242.00 ppm iron , 68.00 and 86.67 ppm, manganese 121.67 and 132.00 ppm zinc. while the control recorded lower values and all the nutrients studied.

scholarly journals Peanut (Arachis hypogaea) Production as Influenced by Various Row and Hill Spacings

2020 ◽  
Vol 5 (8) ◽  
pp. 1370-1374
Author(s):  
Reybhoy A. Ramos
Keyword(s):  
Block Design ◽  
Insect Pest ◽  
Average Weight ◽  
Average Temperature ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Level Of Significance ◽  
Complete Fertilizer ◽  
The Hill

The study was conducted to determine the yield of peanut as affected by different row and hill spacings. The experiment was done under the soil and climatic requirements of Zamboanga Sibugay, Philippines with an average temperature of 27.3 0C. The experiment was laid using Randomized Complete Block Design (RCBD) with sixteen combined treatments. An area of 80 square meters was divided into 16 plots, each plots measured 1m by 5m excluding canals. There were two factors used in the study, the different rows and hill spacings. The row spacing used were R1 (12 inches), R2 (16 inches), R3 (20 inches), R4 (24 inches) and the hill spacing used were H1 (6 inches), H2 (7 inches), H3 (8 inches), H4 (9 inches). Complete fertilizer was drilled at the base of the plant 30 days after planting at the rate of 1.83 grams per hill. Tobacco spray was applied twice, first at 15 DAP and second at 50 DAP and kakawate spray was applied 43 days from planting to prevent and repel insect pest. Result revealed that the average number of pods per plant per plot, average weight of pods in gram per plant per plot, total number of pods per plot, and total weight of pods in kilogram per plot had no significant difference as affected by different row and hill spacings. However, the result on the average number of seeds per plant per plot showed that there is a significant difference among treatments. Statistical analysis revealed that the computed “f1” is greater than the tabulated “f1” at 5% level of significance.

scholarly journals KARAKTERISASI SIFAT FISIKO-KIMIA DAN ORGANOLEPTIK BERAS ANALOG KAYA ANTIOKSIDAN DARI PATI GARUT (Maranta arundinaceae L.): MOCAF DAN PUREE RUMPUT LAUT (Gracilaria sp)

2021 ◽  
Vol 17 (3) ◽  
pp. 134
Author(s):  
Damat Damat ◽  
Joko Susilo Utomo ◽  
Anas Tain ◽  
Devi Dwi Siskawardani ◽  
Ayu Rastikasari
Keyword(s):  
Diabetes Mellitus ◽  
Block Design ◽  
Cassava Flour ◽  
Organoleptic Characteristics ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Four Levels ◽  
Potential Food ◽  
1000 Grain Weight ◽  
Arrowroot Starch

<p class="Abstrak"><em><span lang="EN-GB">Diabetes mellitus </span></em><span lang="EN-GB">merupakan penyakit kronis yang disebabkan oleh defisiensi insulin. Salah satu cara untuk mencegah penyakit tersebut adalah dengan banyak mengkonsumsi makanan kaya antioksidan. Salah satu jenis makanan yang potensial untuk dikembangkan adalah beras <em>analog</em> kaya antioksidan dari campuran pati garut, <em>mocaf</em> dan <em>puree</em> rumput laut <em>Gracilaria </em>sp. Penelitian ini bertujuan untuk mengetahui sifat fisiko-kimia dan organoleptik beras <em>analog</em> kaya antioksidan dari pati garut, tepung <em>mocaf</em> dan <em>puree</em> rumput laut <em>Gracilaria </em>sp. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) faktorial dengan 2 faktor. Faktor pertama yaitu proporsi pati garut: tepung <em>mocaf</em>, terdiri dari 3 level 25:75, 50:50, dan 75:25%. Faktor kedua, kosentrasi <em>puree</em> rumput laut yang terdiri dari 4 level yaitu 0; 1; 2; dan 3%. Hasil penelitian menunjukkan bahwa terdapat interaksi antara proporsi pati garut dan tepung <em>mocaf</em> dengan kosentrasi <em>puree</em> rumput laut terhadap kadar air, lemak, protein, karbohidrat, total kalori, intensitas warna, densitas kamba, bobot 1000 butir, dan kenampakan beras <em>analog</em>. Berdasarkan hasil pada penelitian diketahui bahwa kadar air tertinggi pada perlakuan proporsi pati garut: tepung <em>mocaf</em> 75:25 dengan persentase rumput laut 0%, yaitu sebesar 8,62%, kadar karbohidrat tertinggi pada perlakuan proporsi pati garut: tepung <em>mocaf</em> 75:25 dengan persentase rumput laut 1%, yaitu sebesar 90,61%, sedangkan aktifitas antioksidan tertinggi beras analog diperoleh pada perlakuan kosentrasi <em>puree</em> rumput laut 3% yaitu sebesar 15,547%. Perbedaan perlakuan juga berpengaruh terhadap hasil uji organoleptik, baik kenampakan, tekstur, rasa, aroma, maupun kesukaan. Perbedaaan rasio pati garut:tepung mocaf dengan konsentrasi <em>puree</em> rumput laut <em>Gracilaria </em>sp berpengaruh terhadap sifat fisiko-kimia dan organoleptik beras <em>analog</em>.</span></p><p class="Abstrak"><span lang="EN-GB"><br /></span></p><p class="Abstrak"><strong><span lang="EN-GB">High Antioxidant Analogue Rice Characterization Based on Proportion of Arrowroot Starch (<em>Maranta arundinaceae</em> L.): MOCAF (Modified Cassava Flour) and Seaweed Puree Concentration (<em>Gracilaria</em> sp)</span></strong></p><p class="Abstrak"><span lang="EN-GB">Diabetes mellitus is a chronic disease caused by insulin deficiency. The solution to prevent this disease is through high antioxidant foods consumption. The high antioxidant analogue rice based on arrowroot starch, MOCAF (Modified Cassava Flour) and seaweed puree <em>Gracilaria</em> sp. is potential food that could developed. This study used randomized complete block design (RCBD) factorial with two factors. The first factor was proportion of arrowroot starch and MOCAF consisted three levels (25:75, 50:50, and 75: 25%). The second factor was seaweed puree concentration that consisted four levels (0; 1; 2; and 3%). The result indicated that there was interaction between proportion of arrowroot starch and MOCAF, with seaweed puree addition to the chemical (water, fat, protein, and carbohydrate content), and physical characteristics (total calories, color intensity, bulk density, 1000-grain weight, and appearance). The highest water content was 8.62% due to treatment arrowroot starch: MOCAF (75%: 25%), without seaweed puree (0%). While the highest carbohydrate was 90.61%, due to proportion 75%: 25% of arrowroot starch: MOCAF and 1% seaweed puree. Furthemore, the highest antioxidant level was 15.547% obtained from 3% seaweed puree. The treatment also affected on the organoleptic test (appearance, texture, taste, aroma, and tendency). Therefore, it can concluded that proportion of arrowroot starch: MOCAF, and seaweed puree concentration give significantly effect on the physical-chemical, and organoleptic characteristics of analogue rice.</span></p><p class="Abstrak"><span lang="EN-GB"><br /></span></p>

scholarly journals PENGARUH PUPUK ORGANIK BERKADAR BESI TINGGI TERHADAP PERTUMBUHAN DAN PRODUKSI PADI SAWAH

Agric ◽  
2016 ◽  
Vol 25 (1) ◽  
pp. 58
Author(s):  
Triyani Dewi ◽  
Iswandi Anas ◽  
Suwarno ◽  
Dedi Nursyamsi
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Biological Properties ◽  
Organic Content ◽  
Soil Productivity ◽  
High Iron Content ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Environmentally Sound

<p>The application of chemical fertilizers is costly and gradually lead to the environmental problems. Organic residue recycling is becoming an increasingly important aspect of environmentally sound sustainable agriculture. Organic content of these soils are mostly very low, while it is widely know that organic matter is very important to keep physical, chemical, and biological properties of soil as well as soil productivity. The objectives of the study were to know effect of organic fertlizer that high iron content on growth and production paddy rice. Pot experiment was conducted on May to November 2011 in green house. This experiment using a randomized complete block design with two factors; the types of soil (Endoaquert, Tropaquept, and Hapludult) and organic fertilizer<br />enriched with Fe (FeCl3) in various level. Each treatment was replicated three times. The results showed that the organic fertilizer enriched with iron up to 64000 mg.kg-1 didn’t significantly effect on the growth and rice production. Application of organic fertilizer in Tropaquept Sukamandi<br />can increase significantly on height plant, number of tiller, dry weight of grain and 1000-grain weight.</p>

Effect of Organic and Chemical Fertilizer On Growth and Yield of Potato (Solanum Tuberosum) Varieties in Nepal

2021 ◽  
Vol 19 (1) ◽  
pp. 103-112
Author(s):  
S Bhujel ◽  
C Pant ◽  
S Sapkota
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Farmyard Manure ◽  
Fertilizer Application ◽  
Chemical Fertilizer ◽  
Growth And Yield ◽  
Recommended Dose ◽  
Potato Varieties ◽  
Randomized Complete Block Design ◽  
Two Factors

An experiment was conducted to evaluate the yield performance of potato varieties with chemical and organic fertilizer at Chilime, Rasuwa. The experiment consisted of eight treatment combinations laid out in two factors Randomized Complete Block Design (RCBD) with three replications. Four potato varieties (Khumal-Seto-1, Khumal-Ujjwal, Janak-Dev and Kufri-Jyoti) with fertilizer (Recommended dose of chemical fertilizer (100:100:60 NPK kg ha-1) and organic farmyard manure (15 mt ha-1) were used to make eight treatment combinations. The results showed that Janak-Dev had the highest plant height (69.3 cm) and canopy diameter (60.92 cm). Khumal-Seto-1 had highest number of main stems per hill (3.75) which were statistically similar to Kufri-Jyoti (3.42) and Khumal-Ujjwal (3.25). Janak-Dev had the lowest number of main stems per hill (1.87). The effect of fertilizer was nonsignificant. Flowering occurred earlier in Janak-Dev at 61.17 days after sowing while Kufri-Jyoti flowered after 73.17 days after sowing. The highest number of tubers were found in Khumal-Seto-1 (9.167) and lowest in Janak-Dev (5.750). Number of tubers per plant was not affected by types of fertilizers used. Maximum weight of each tuber (107.7 grams), yield per plant (780 grams) and yield per hectare (37.1 mt ha-1) were obtained from Kufri-Jyoti. These parameters were the highest from chemical fertilizer application. This field experiment showed that Kufri-Jyoti with recommended dose of chemical fertilizer was appropriate to get optimum yield under Chilime condition. SAARC J. Agric., 19(1): 103-112 (2021)

scholarly journals Pertumbuhan Vegetatif Talas Satoimo dan Kultivar Lokal pada Dosis Pupuk Nitrogen yang Berbeda

Akta Agrosia ◽  
2016 ◽  
Vol 19 (2) ◽  
pp. 167-172
Author(s):  
Yulian Yulian ◽  
Edhi Turmudi ◽  
Kanang S. Hindarto ◽  
Hendri Bustamam ◽  
Juwita Noventina Hutajulu
Keyword(s):  
Nitrogen Fertilizer ◽  
Coastal Area ◽  
Vegetative Growth ◽  
Block Design ◽  
Local Cultivar ◽  
Potential Development ◽  
Randomized Complete Block Design ◽  
Two Factors ◽  
Four Levels ◽  
Different Doses

Taro (Colocasia esculenta L. Schott) is a plant that has an excellent economic and healthy value, as well as a great potential development of Bengkulu coastal area. That is because taro has wide adaptability, and can be consumed both as a staple food and healthy food alternative. This research was conducted to study the vegetative growth of two cultivars of taro given four different doses of nitrogen. This study applied a Randomized Complete Block Design (RCBD) with two factors. The first factor was the cultivar of taro consisted of two levels, namely Taro Satoimo (T1) and the Taro Local (T2). The second factor was the doses of nitrogen fertilizer which consisted of four levels namely: N0 = 0 kg / ha (control), N1 = 50 kg / ha (2.6 g, N2 = 100 kg / ha, and N3 = 150 kg / ha. Thus, obtained eight treatment combinations. Each treatment was repeated three times to get 24 plots. The results showed that based on increased vegetative growth, the cultivar Satoimo has a faster response than local cultivar. Satoimo has demonstrated another advantage because it produced some leaves and number new shoot. The best dose of nitrogen fertilizer on the vegetative growth of taro in the coastal area of Bengkulu is 150 kg/ha.

scholarly journals Bio-organic, Bio-chemical Fertilizers and N-Fixer (N-Bio Booster) Improve Paddy Yields in the Field Trials at Langkat in Medan, Indonesia

2020 ◽  
Author(s):  
Shih Hao Tony Peng ◽  
Chee Kong Yap ◽  
Roslan Arshad ◽  
Ee Wen Chai
Keyword(s):  
Field Trial ◽  
Block Design ◽  
Organic Fertilizer ◽  
Field Trials ◽  
Chemical Fertilizers ◽  
Rice Varieties ◽  
Factor I ◽  
Factor Ii ◽  
Randomized Complete Block Design ◽  
Two Factors

The aim of the present study was to assess the efficacy of All Cosmos Industries (ACI) bio-organic and bio-chemical fertilizers and ACI N-Fixer (N-Bio Booster) on the paddy yields based on the field trial plots at Langkat, Medan, Indonesia. This application of ACI bio-organic fertilizer (NPK 5/5/5) and ACI bio-chemical (NPK 15/15/15) fertilizer and ACI N-Fixer tests were conducted at the paddy farm at Langkat from May-October 2018. This study employed a factorial randomized complete block design which consisted of two factors, namely: Factor I with four types of fertilizers while Factor II consisted of two paddy varieties (Inpari 30 and Inpari 32). Overall, the filled grains in the ACI treatments are significantly (P&lt; 0.05) higher than those in the control treatments that used Normal Chemical Compound NPK. Overall, total weight per meter&sup2; (368-617g) in ACI treatments are also significantly (P&lt; 0.05) higher than those (319-371g) in the control treatments. At harvesting time at 105 days after transplanting, significantly higher (P&lt; 0.05) colony counts (13-15 x 106 CFU/mL) (for ACI treatments), than those (8 x 106 CFU/mL) in the controls positively indicated higher total yields of paddy grains per hectare. It was found that the application of ACI bio-organic and bio-chemical fertilizers and ACI N-Fixer can improve paddy yields of the two rice varieties, between 16.4-38.2% (up to 5.75 MT/ha), in the field trial plots at Langkat. These commercial fertilizers play an imperative role in refining the soil fertility and thereby can increase the yield of rice production. Therefore, it is highly recommended that ACI bio-organic and ACI bio-chemical fertilizers and ACI N-Fixer (N-Bio Booster) can be employed to increase the paddy yield in this region.

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