Dose Of Inorganic Fertilizers Research Articles

Effect of Biofertilizer and Inorganic Fertilizer on Growth and Productivity of Shallot (Allium cepa L.)

Shallots are categorized as a national priority commodity as a kitchen spice needed every day. Shallots are a commodity that the production continues to increase from year to year. National shallot production increased by 4.9% from 2018 production of 1,502,436 tons and for the North Sumatra region it increased by 7.5% from 2018 production of 113,864 tons (BPS, 2019). This study aims to determine the effect of biofertilizer and inorganic fertilizer on the production of shallots (Allium cepa L.) using mini bulbs and mother bulbs on inceptisol soils in the Practice Field of the Medan Agricultural Development Polytechnic (Polbangtan Medan). This research was conducted from June to October 2021 at Polbangtan Medan. The study used a factorial randomized block design with three replicates and 18 treatment combinations of treatment dosage of organic fertilizer and biofertilizer treatment. Observation parameters in this study were soil analysis, plant height, number of leaves, number of tillers, wet weight, and dry weight. The results of soil analysis on parameters N-total (0.11%) in the low category, C-Organic (0.97%) in the low category, CEC (18.85) in the medium category, pH (7.01) in the neutral category, and Bray II (69.71) high category. This study revealed that the application of biological fertilizer and inorganic fertilizer had no significant effect on all observation parameters, both growth and tuber yield. For the Sanren variety, it is recommended that 5 ml/L of biofertilizer and 75% dose of inorganic fertilizer because it showed the best conditions for the parameters of the number of leaves, wet weight of the sample, and plot. For the Lokananta variety, it is recommended that 10 ml/L of biological fertilizer and 25% dose of inorganic fertilizer because it showed the best conditions for the parameters of plant height, number of leaves, and wet weight of the sample, and plot.

Growth and yield response of lowland rice (Oryza sativa L.) to planting density and nutrient management

Planting density and nutrient management practices may affect lowland rice production. This study was conducted to evaluate their effects on growth and yield of lowland rice (NSIC Rc400), determine the appropriate number of seedlings hill-1 and nutrient management for optimum yield, and assess their profitability on rice. A split-plot arranged in Randomized Complete Block Design was used with three replications. Planting densities (M1=1 seedling hill-1 and M2=3-5 seedlings hill-1) were designated as mainplots while nutrient management practices as subplots;T1=0-0-0 (Control), T2=120–60–60kg ha-1 N, P2O5, and K2O, T3=60–30–30kg ha-1 N, P2O5, and K2O + 2.5t ha-1 vermicast + biweekly foliar urea spray, T4=45–30–30kg ha-1 N, P2O5, and K2O + 2.5t ha-1 vermicast + weekly foliar urea spray, and T5=30–30–30kg ha-1 N, P2O5, and K2O + 2.5t ha-1 vermicast + weekly foliar urea spray. Results revealed that M1 produced more filled spikelets panicle-1 regardless of nutrient management. Early heading and maturity were noted at T1, T4, and T5 treatments. Integrated nutrient application at T3 significantly increased growth, and yield parameters of lowland rice with higher gross income and benefit-cost ratio, next to the recommended dose of inorganic fertilizer (T2). This was due to the high labor and material cost incurred with the integrated nutrient application. Highest net income and benefit-cost ratio were obtained with M1 and T2. Transplanting 1 seedling hill-1 with combined inorganic and vermicast application (T3) seemed appropriate for NSIC Rc400 especially if the farmer has his own vermicast production.

Effects of Heavy Metal-Tolerant Microorganisms on the Growth of “Narra” Seedlings

The effectiveness of heavy metal-tolerant microorganisms for supporting plant growth needs to be understood before it can be used as a soil bioremediation agent. The purpose of this study was to determine the effect of heavy metal tolerant microorganisms on the growth of “Narra” seedling (Pterocarpus indicus Wild). Three heavy metals-resistant (Pb, Cd, and Cu) rhizobacteria from a copper (Cu) mined-out site in Marinduque, Philippines showed plant growth promotion in vitro. A treatment combination of formula inoculant A (CuNFbM 4.1, MGR 333), B (CuNFbM 4.1, MGR 333, PbSM 2.1), and O (Uninoculated); compost (0%, 4%); and lime + inorganic fertilizer {without or with lime and inorganic fertilizer (LF0; LF1)} were applied to Narra seedlings planted on 445 mg/kg Cu-contaminated soil. Lime (2 mg/ha) and the recommended dose of soybean inorganic fertilizer were used as positive controls to evaluate the ability of inoculations and composts to promote the growth and used as positive controls to evaluate the ability of inoculants and composts to promote the growth and copper accumulation of narra in greenhouse experiments. All treatment combinations resulted in significant differences in plant height, leaf number, stem diameter, shoot and root dry weight, as well as, shoot, root Cu content, and plant Cu uptake of 13-week-old “Narra”. Inoculated “Narra” could thrive better in mine-degraded soil containing 445 ppm Cu with 4% compost. Inoculant B demonstrated the best plant performance while Pseudomonas synxantha (PbSM 2.1) probably increases the plant’s growth due to 1-aminocyclopropane-1-carboxylate (ACC) deaminase it produces. Accumulation of Cu was higher in the root compared other plant parts. More research is necessary to elucidate the mechanism of plant growth promotion and heavy metal re mediation by P. synxantha.

Effect of Integrated Use of Farmyard Manure and Chemical Fertilizers on Soil Properties and Productivity of Rice in Chitwan

The effect of sole application of farm yard manure (FYM) and combined application of chemical fertilizers and FYM on soil properties and growth and yield traits of rice (Variety: Ramdhan) was studied on sandy loam soil at Rambagh, Chitwan, Nepal from June to November 2019. The seven treatments were studied in a randomized complete block design with four replications: T1: 100% recommended dose of inorganic fertilizer (RDIF) (i.e., 100:60:40 NPK kg ha-1); T2: 50% RDIF+ FYM @ 9.9 Mt ha-1; T3: 50% RDIF+ FYM @ 31.3 Mt ha-1; T4: 50% RDIF+ FYM @ 11.05 Mt ha-1; T5: FYM @ 19.83 Mt ha-1. The results indicated that combined application of chemical fertilizers and farmyard manure was found to have a significant effect on the number of effective tillers per m-2 and grain yield of rice. There was no significant interaction between thousand grain weight and sterility percent. The highest grain yield of 3,453.69 kg ha-1 and the highest number of effective tillers per m-2 (299) were found in the application of 50% RDIF+ FYM @ 31.3 Mt ha-1. The application of the highest level of FYM alone improved the soil properties. The highest values of available soil organic carbon (34.67 Mt ha-1), available soil nitrogen (1.24 Mt ha-1), and available soil phosphorus (39.57 kg ha-1) at a depth of 0–15 cm were found with the application of FYM @ 62.5 Mt ha-1. The findings of this study suggest that farmers can apply FYM @ 62.5 Mt ha-1 to improve soil properties and 50% RDIF + FYM @ 31.3 Mt ha-1 to have the higher grain yield of rice.

Pemanfaatan Pupuk Hayati-fosfat untuk Meningkatkan Pertumbuhan Tanaman Jagung (Zea mays L.) di Entisol

Entisols are low fertility soils that require high doses of inorganic fertilizers to support plant growth. On the other hand, it was reported that biofertilizers can be applied to support plant growth. The purpose of this study was to examine the ability of bio-phosphate fertilizers to affect plant growth. The greenhouse experiment was arranged according to a completely randomized design, consisting of five treatments of different fertilization and each treatment was repeated four times. Experimental treatments were P1) control; P2) biological-phosphate fertilizer treatment; P3) treatment of NPK fertilizers; P4) integrated fertilizer treatment of 2 combinations of fertilizers (biological-phosphate & NPK); P5) integrated treatment of 3 combinations of fertilizers (biological-phosphate, NPK & organic). The dose of NPK fertilizer is 75% of the recommended dose. The experimental soil has a sandy loam texture, pH-soil 6.01, content of C-organic1.20%, N-total 0.09%, P-available 5.68 ppm and Kdd 0.31cmol/kg. The results showed that the application of a single biological phosphate fertilizer had no significant effect on plant growth compared to the control. A significant effect was obtained on integrated fertilization, both with two combinations of fertilizers (P4) and with three combinations of fertilizers (P5). The highest plant growth rate, with reference to the total dry biomass of plant shoots and roots, was obtained in treatment P5 with plant growth rates reaching 232.14% higher than the single treatment of biological fertilizers (P2), 53.70% higher than the single treatment of NPK fertilizers (P3) and 16.35% higher than the integrated treatment of two combinations of fertilizers (P4).

Assessing the influence of integrated nutrient management on growth performance of aromatic fine rice

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July 2017 to December 2017 to study the combined effect of vermicompost with inorganic fertilizers on the growth attributes of aromatic fine rice varieties. The experiment comprised three varieties viz. BRRI dhan34, Binadhan-13 and Kalizira, and five nutrient managements viz. Control (no application of manures and fertilizer), Recommended dose of inorganic fertilizers ( i.e. 150, 95, 70, 60, 12 kg ha-1 of Urea, TSP, MOP, Gypsum and Zinc Sulphate, respectively), vermicompost @ 3 t ha-1, 25% less than recommended dose of inorganic fertilizer + vermicompost @ 1.5 t ha-1, 50 % less than recommended dose of inorganic fertilizer + vermicompost @ 3 t ha-1. The experiment was laid out in a randomized complete block design with three replications. Growth characters of aromatic fine rice were significantly influenced by variety, nutrient management and interaction of variety and nutrient management. In case of variety, the highest number of total tillers hill-1 leaf area index, total dry matter production and chlrophyll content were obtained from Binadhan-13 at all sampling dates. While, Kalizira produced the lowest number of total tillers hill-1, total dry matter, leaf area index and chlorophyll content except plant height at all sampling dates. In case of nutrient management, the tallest plant, the highest number of total tillers hill-1, total dry matter production, leaf area index and chlrophyll content were obtained from 50 % less than recommended dose of inorganic fertilizer + vermicompost @ 3 t ha-1 at all sampling dates. But the shortest plant, the lowest number of total tillers hill-1, leaf area index, total dry matter production, crop growth rate and chlorophyll content were found in control (no manures and fertilizers) at all sampling dates. In case of interaction of variety and nutrient management, the highest number of total tillers hill-1, leaf area index, total dry matter production and chlorophyll content were found in Binadhan-13 along with 50 % less than recommended dose of inorganic fertilizer + vermicompost @ 3 t ha-1 at all sampling dates. So, it can be concluded that Binadhan-13 along with 50% less than the recommended dose of inorganic fertilizers + vermicompost @ 3 t ha-1 combination might be a promising practice for aromatic fine rice cultivation.

Differential Effects of Plant Growth-Promoting Rhizobacteria Used as Soil Application vis-à-vis Root Dip of Seedlings on the Performance of Onion (Allium cepa L.) in Three Distinct Agro-climatic Zones of Indian Punjab

ABSTRACT The effects of plant growth-promoting rhizobacteria (PGPRs) vary with their mode of inoculation, location, and dose of inorganic fertilizers applied. Therefore, it is imperative to identify the proper PGPR along with its mode of inoculation for each soil–plant system. Here, six combinations of PGPRs applied through root dip of onion seedlings were used with both 75% NPK and 100% NPK. Their performance was compared with a biofertilizer commercialized by Punjab Agricultural University as soil application (T9), two biofertilizers from Indian Agricultural Research Institute used as root dip of seedlings (T7 and T8), and two uninoculated controls [100% NPK (T0) and 75% NPK (T16)] at three locations of Punjab, India. Since interaction (PGPR × location) effects were significant, only one out of six PGPR treatments, viz. T6 (100% NPK + Azotobacter + Sphingobacterium + Burkholderia), performed consistently well across locations and gave maximum 20-bulb weight, bulb yield, net returns, and benefit:cost ratio. This treatment (T6) yielded at par with T7 and T8 but was superior to T9, which in turn yielded at par with T0 and T16 at all locations. Colonization of onion roots by beneficial natural resident arbuscular mycorrhizal fungi was higher in T6 than in control and penetration was higher when PGPRs were integrated with 75% NPK than with 100% NPK. Utilization of PGPRs with 100% NPK in light textured soils having low fertility along with poor water holding capacity and with 75% NPK in heavy textured soils having high fertility coupled with high moisture holding capacity is advocated.

Leaf nutrient content and corn growth with application of liquid organic fertilizer and inorganic fertilizer

Plants have an important role in mitigating climate change because plants are able to absorb carbon dioxide which is one of the greenhouse gases. Good plant growth and high yields are a reflection of its ability to absorb carbon dioxide gas, so various efforts aimed at this, such as fertilization can contribute to reducing greenhouse gas levels in the atmosphere. This research aims to determine the use of liquid organic fertilizers and inorganic fertilizers on nutrient uptake and growth of corn plants. This research was conducted in the Jumantono experimental field, Karanganyar. The research used the Randomized Block Design method, 9 treatments (A = Control, B = NPK standard, C = ¼ NPK + 1 POC, D = ½ NPK + 1 POC, E = ¾ NPK +1 POC, F = 1 NPK + 1 POC, G = ¾ NPK + ¼ POC, H = ¾ NPK + ½ POC, I = ¾ NPK + ¾ POC) with 3 replications, so we get 27 samples. The results showed that the application of liquid organic fertilizer doses of 1/4, 1/2, 3/4 and 1 combined with inorganic fertilizers gave no different results on nutrient uptake and increased plant growth, especially in the number of leaves and stem diameter, but differed in plant height. The application of 1 dose of liquid organic fertilizer and 3/4 dose of inorganic fertilizer gives higher yields compared to standard inorganic fertilizers.

Study of Growth and Production of Cotton Crops on Organic and Inorganic Fertilization

The study aimed to determine the effectiveness of organic and inorganic fertilization and to obtain the right dose of organic and inorganic fertilizers for the growth and production of seed cotton plants. The research was designed using a Randomized Group Design with 8 treatments repeated 5 times. The treatments were inorganic fertilizer Balittas package dose (100 kg N + 37.5 kg P2O5 + 37.5 kg K2O), Balittas package dose treatment with the addition of cottonseed cake bokashi, Balittas package dose with the addition of cow manure, Balittas package dose with the addition of cottonseed cake bokashi and cow manure and treatment with a dose of ½ Balittas package with the addition of organic fertilizers mentioned above, and treatment only with the use of organic fertilizers. The results showed that the treatment of organic and inorganic fertilizers was very effective in increasing the growth and production of cotton plants. The fertilization dose of Balittas package (100 kg N + 37.5 kg P2O5 + 37.5 kg K2O) + cottonseed cake bokashi + cow pukan gave better growth and production compared to other treatments, but the fertilization treatment of ½ dose of Balittas package (50 kg N + 18.75 kg P2O5 + 18.75 kg K2O) + cottonseed cake bokashi tended to be more efficient.

Effect of Sulphur and Micronutrients on the Yield and Quality of Garlic (Allium sativum L)

The field experiment was conducted at the Horticulture Farm, Sri Karan Narendra College of Agriculture, Jobner, Jaipur (Rajasthan) to find out the effect of sulphur and micronutrients on yield and quality of garlic during Rabi seasons 2019-20 and 2020-21. The experiment was carried out in factorial randomized block design with three replications and twenty treatment combinations with four levels of sulphur (S0-control, S1-sulphur 20 kg/ha, S2-sulphur 40 kg/ha and S3-sulphur 60 kg/ha) and five levels of micronutrients (M0-Control, M1-zinc sulphate @ 0.6%, M2-ferrous sulphate @ 0.2%, M3-borax @ 0.5 and M4-Ammonium molybdate @ 0.5%). The sulphur was applied as soil application just before sowing and micronutrients (Zn, B, Fe and Mo) as foliar spray at 40 days after sowing. Recommended dose of inorganic fertilizers applied uniformly in whole experimental area. The results of the study have clearly indicated that among sulphur levels, application of sulphur 60 kg/ha significantly improved yield and quality parameters viz., average weight of clove, average weight of bulb, bulb yield per plot, per hectare, nitrogen content, phosphorus content, potassium content and sulphur content in bulb enhanced significantly by application of sulphur 60 kg/ha (S3) in both the years as well as in pooled analysis. Although, sulphur application at 40 kg/ha along with foliar application of zinc at 0.6 % was found at par to it. Similarly, among micronutrients foliar application of zinc sulphate @ 0.6% significantly influenced all the yield and quality parameters viz., average weight of clove, average weight of bulb, bulb yield/plot, bulb yield/hectare, nitrogen content, phosphorus content, potassium content and sulphur content in bulb of garlic in both the years as well as in pooled analysis.

Factors affecting farmers’ decision to use organic fertilizers on Robusta coffee plantation: A case study in Tanggamus, Lampung

The dependency on agri-chemical inputs, such as fertilizers and pesticides, tends to increase among small-scale farmers in developing countries. On the other hand, demand for organic products, including coffee, continuously increases due to the rising concern of the consumers for sustainable products and a healthy lifestyle without chemical residues. This study aims to understand the determinant factors that affect small-scale farmers in using organic fertilizers. The research was conducted in Tanggamus Regency from June – August 2019 using a survey method. Respondents were determined using a simple random sampling method. Data were analyzed using descriptive statistics and a linear regression model. The results showed that the use of organic fertilizers is still limited and farmers tend to use chemical fertilizers to maintain their coffee plants. The dose of inorganic fertilizer and ownership of the number of coffee trees have a negative effect on the application of organic fertilizer. While the experience of farmers in coffee farming and the age of coffee plants have a positive effect on the dose of organic fertilizer applied.

Influence of Organic Manures and Synthetic Fertilizers on Nutrient Uptake and Yield of Fodder Maize

A pot culture experiment was conducted at the Department of Agronomy, Madras Veterinary College, Chennai, during rabi season 2019 - 2020 to study the influence of organic manures and synthetic fertilizers on the nutrient uptake and green fodder yield of fodder maize (Zea mays L.). An experiment was laid out with two factors and three replications. Four organic manure treatments in main-plots viz., no manure, farm yard manure (25 t ha-1), vermicompost (12 t ha-1) and poultry manure (12 t ha-1) and four fertilizer treatments in subplots viz., No fertilizer, 125% RDF, 100% RDF, 75% RDF. The recommended dose of fertilizer (RDF) for fodder maize is 60 kg N ha-1: 40 kg P2O5 ha-1: 20 kg K2O ha-1. The organic manures were applied as per the N equivalent basis to the inorganic nutrient recommendation. The results revealed that the application of nutrients through poultry manure @ 12 t ha-1 resulted in higher plant uptake of Nitrogen (112.2 kg ha-1), phosphorus ( 19.26 kg ha-1), and potassium ( 117.7 kg ha-1) followed by the application of farm yard manure @ 25 t ha-1 on N equivalent basis. Concerning fertilizers, the application of 75% recommended dose of inorganic fertilizer resulted in higher plant nitrogen, phosphorous, and potassium uptake (104.9, 18.9, 108.54 Kg ha-1 N, P, K, respectively). About the fodder yield, the highest green and dry fodder yield were recorded under the treatment combination of poultry manure along with 75% RDF 31.84 t ha-1 and 5.19 t ha-1 at 60 DAS, respectively).

Supplemental Nitrate Composition of Ca and Mg Liquid Fertilizer Application on Potato <i>(Solanum tuberosum L.)</i> to Increase Tuber Yield in Tiyo District of Arsi, Ethiopia

Field experiments were conducted at Kulumsa station of Tiyo district, southeastern Ethiopia in 2017 and 2018 off-season, to test the effect of fertilizer products on yield and yield components of potato and to evaluate the possibility of incorporating the products into input system for agricultural production. The treatment set up were 1) No input (negative control), 2) recommended rate of fertilizer (RNP) (111, 39 and 16.5 Kg ha^-1 N. P and S, respectively) from NPS and Urea, 3) RNP + 1.8 L ha^-1 LF; 4) RNP + 3 L ha^-1 LF, and 5) RNP + 4.2 L ha^-1 LF on growth performance and yield. The results showed that treatment effects were significant for potato total and marketable tuber yields. Since the effect of fertilizers on the yield of potato was consistent across seasons in Kulumsa station, combined analysis has been conducted. The highest total (46.1 t ha^-1) and marketable (42.2 t ha^-1) tuber yields were recorded with the application of recommended fertilizer (RNP) + 1.8 L ha^-1 LF and (RNP) + 3L ha^-1 LF. This treatment was even statistically superior to application of RNP alone. Compared to the control and RNP treatments, application of inorganic fertilizers with 1.8 L ha^-1 LF gave 23.4 and 14.1% more total tuber yield of potato, respectively. Similarly, RNP + 3.0L ha^-1 LF gave 20.9 and 13.7 % more marketable tuber yield of potato over the control and recommended fertilizer from inorganic sources (NPS and urea) treatments, respectively. The result further showed that application of 1.8 L ha^-1 LF with RNP fertilizer gave total and marketable potato tuber yields which is statistically at par with yields obtained from NPS plus 3.0 L ha^-1 LF. The lowest total (35.3 t ha^-1) and marketable (33.4 t ha^-1) tuber yields of potato were harvested from the plots that received neither inorganic nor fertilizers. Therefore, integrated application of liquid fertilizer along with full dose of inorganic fertilizers has been recommended for increased productivity of potato in the south-eastern highlands of Ethiopia.

Yield Performance of Two HYV Transplant Aman Rice under Different Nutrient Management Practices

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh, Bangladesh to investigate the influence of plant nutrient management on the yield performance of transplant Aman rice. The experiment comprised two Aman rice varieties viz. Binadhan-15 and Binadhan-16, and ten nutrient management viz. Recommended dose of inorganic fertilizer (RDF) Urea-TSP-MoP-Gypsum-ZnSO4 @ 150-110-70-60-5 kg ha-1, Cowdung @ 10 t ha-1, Poultry manure @ 5 t ha-1, Vermicompost @ 3 t ha-1 , 25% less than RDF + cowdung @ 5 t ha-1, 50% less than RDF + cowdung @ 10 t ha-1 , 25% less than RDF + poultry manure @ 2.5 t ha-1, 50% less than RDF + poultry manure @ 5 t ha-1, 25% less than RDF + vermicompost @ 1.5 t ha-1, 50% less than RDF + vermicompost @ 3 t ha-1. The experiment was laid out in a randomized complete block design with three replications. Binadhan-15 produced taller plants (97.86 cm), effective tillers hill-1 (6.28), grains panicle-1 (101.73), higher grain (3.58 t ha-1) and straw (4.99 t ha-1) yields compared to Binadhan-16. In case of nutrient management, 50% less than RDF + poultry manure @ 5 t ha-1 produced taller plants (101.1 cm), effective tillers hill-1 (7.07), grains panicle-1 (105.1) and grain yield (4.08 t ha-1). The highest grain yield (4.25 t ha-1) was recorded in Binadhan-15 fertilized with 50% less than RDF + poultry manure @ 5 t ha-1 and the lowest grain yield (2.28 t ha-1) was obtained in Binadhan-16 fertilized with vermicompost @ 3 t ha-1. So, it can be concluded that transplant Aman rice cv. Binadhan-15 fertilized with 50% less than RDF + poultry manure @ 5 t ha-1 appears as the promising practice to obtain the highest grain yield.

Actinobacteria-enhanced plant growth, nutrient acquisition, and crop protection: Advances in soil, plant, and microbial multifactorial interactions

Agricultural areas of land are deteriorating every day owing to population increase, rapid urbanization, and industrialization. To feed today's huge populations, increased crop production is required from smaller areas, which warrants the continuous application of high doses of inorganic fertilizers to agricultural land. These cause damage to soil health and, therefore, nutrient imbalance conditions in arable soils. Under these conditions, the benefits of microbial inoculants (such as Actinobacteria) as replacements for harmful chemicals and promoting ecofriendly sustainable farming practices have been made clear through recent technological advances. There are multifunctional traits involved in the production of different types of bioactive compounds responsible for plant growth promotion, and the biocontrol of phytopathogens has reduced the use of chemical fertilizers and pesticides. There are some well-known groups of nitrogen-fixing Actinobacteria, such as Frankia, which undergo mutualism with plants and offer enhanced symbiotic trade-offs. In addition to nitrogen fixation, increasing availability of major plant nutrients in soil due to the solubilization of immobilized forms of phosphorus and potassium compounds, production of phytohormones, such as indole-3-acetic acid, indole-3-pyruvic acid, gibberellins, and cytokinins, improving organic matter decomposition by releasing cellulases, xylanase, glucanases, lipases, and proteases, and suppression of soil-borne pathogens by the production of siderophores, ammonia, hydrogen cyanide, and chitinase are important features of Actinobacteria useful for combating biotic and abiotic stresses in plants. The positive influence of Actinobacteria on soil fertility and plant health has motivated us to compile this review of important findings associated with sustaining plant productivity in the long run.

APLIKASI JAMUR MIKORIZA ARBUSKULAR DAN PUPUK ANORGANIK PENGARUHNYA PADA PERTUMBUHAN DAN HASIL JAGUNG MANIS

This study aims to determine the effect of the dose of arbuscular mycorrhiza fungi (AM) and the administration of inorganic fertilizers on the growth and yield of sweet corn. This research was conducted in Kota Bangun Village, Tapung Hilir, Kampar, Riau in June to August 2020. 
 The experimental design used was a completely randomized design consisting of two factors and four replications. The first factor was the dose of AM fungi consisting of 4 levels, namely 0 g / plant, 10 g / plant, 15 g / plant, 20 g / plant. The second factor was the administration of inorganic fertilizer consisting of 4 levels, namely (6 g NPK + 4 g urea)/plant, (4.5 g NPK + 3 urea)/plant, (3 g NPK + 2 g urea)/plant, (1.5 g NPK + 1 g urea)/plant. The observations were analyzed using Analysis Of Variance (ANOVA) at a level of 5%, a significantly different among treatment in further tests with Duncan's Multiple Range Test (DMRT) at a level of 5%.
 The results showed that there was no good combination the dose of AM fungi and inorganic fertilizers on the growth and yield of sweet corn crops. The dose of AM fungi 10 g / plant gives a better influence on diameter of stem and the percentage of AM infection, inorganic fertilizer administration dose (6 g NPK + 4 g urea) produces the best cob weight.
 Keywords: Sweet Corn, Mycorrhiza Arbuscular, Inorganic Fertilizer

The combination of irradiation biofertilizer of rhizosphere microbes consortium inoculant (IMR) and inorganic fertilizer on the growth of kale in a floating raft hydroponic system

A hydroponic floating system is a working system where a plant is placed in a floating net pot on the surface of water. In hydroponic systems, the content of inorganic fertilizers contained in the media is the main source of nutrients for plants. The use of biological fertilizers is expected to reduce the dose of inorganic fertilizers applied to hydroponic systems. The main objective of this study was to obtain a combination of inorganic fertilizers with Inoculant of Rhizosphere Microbial Consortium (IMR) and biofertilizer which has the most influence on the N content, growth and production of kale plant. There are five different treatments on hydroponic floating system viz 100% inorganic fertilizer (control), 100% inorganic fertilizer + IMR (Pa), 75% inorganic fertilizer + IMR (Pb), 50% inorganic fertilizer + IMR (Pc), and 25% + IMR (Pd), where 100% inorganic fertilizer is equivalent to 10 mL / L and the amount of IMR given to each treatment was 10 ml/L. The method used in this research was descriptive comparative method, using primary data which is then analysed quantitatively such as using graphs, and T-test. The results of the research showed that giving a combination of 100% biological fertilizer and 50% inorganic fertilizer, can reduce the use of inorganic fertilizers by 50%, and gave the best and significant influence on plant height 34.41 cm, leaves as much as 30 strands, root length 24.27 cm, and the harvest weight 80.97 grams. The combination of 100% biological fertilizer and 50% inorganic fertilizer does not give a combination of N content of the kale plant.

Serapan Hara N, P, K dan Pertumbuhan Tanaman Jagung Pada Berbagai Dosis Pupuk Anorganik dan Organik di Tanah Inceptisol

The use of inorganic fertilizers has an important role in increasing plant growth and production. But it also causes various problems such as decreasing soil organic matter, soil acidity, soil degradation, nutrient imbalance and increasing environmental pollution. Therefore, it needs to be balanced with the provision of organic fertilizers. A field experiment was conducted to study the effect of application of various doses of inorganic and organic fertilizers on N, P, K nutrient uptake and maize plant growth. The experimental design used was a randomized block design arranged in a factorial manner consisting of two factors. The first factor is the dose of inorganic fertilizer (A): 0, 150 and 300 kg ha-1 phonska and the second factor is organic fertilizer plus (P): 0, 10, 20 tons ha-1. The two factors were combined and each treatment combination was repeated three times. The data obtained were analyzed by analysis of variance at the 5% level of significance. The results showed that there was no interaction between the application of inorganic and organic fertilizers on the growth and nutrient uptake of N, P and K. However, the application of inorganic and organic fertilizers had a significant effect on all tested agronomic traits except for plant height. Nutrient uptake of N, P and K also increased significantly due to the application of inorganic and organic fertilizers. The balance of inorganic and organic fertilizer application increases the availability of nutrients as well as the uptake of N, P, and K nutrients by maize plants.

The Effect of Composting Campus Litter Granules and Inorganic Fertilizers on the Improvement of Soil Physical Properties and Corn Yield (Zea mays L.) In Inceptisol

The addition of organic matter is done to overcome the problems that occur in acid soils such as inceptisols. The aim of the research was to develop organic fertilizer enriched in granular form from campus litter compost to improve soil physical properties and maize yield in Inceptisols. The treatments consisted of: no fertilizer (KGSK1), 8 t ha-1 granule compost (KGSK2), inorganic fertilizer (Urea, SP-36, and KCl) recommended dose (KGSK3), inorganic fertilizer + 8 t ha- granule compost (KGSK4 ), x dose of inorganic fertilizer + compost granule (8 t ha-1) (KGSK5), 2 times dose of inorganic fertilizer + compost granule 8 t ha-1 (KGSK6), x dose of inorganic fertilizer + compost granule 12 t ha- 1 (KGSK7) and 2 times the dose of inorganic fertilizer + compost 4 t ha (KGSK8). The study was designed using a randomized block design with three replications. The results of the study found that the provision of enriched campus litter granules, either applied singly or in combination with inorganic fertilizers, had a significant effect on improving soil physical properties, namely soil volume weight, soil specific gravity, soil porosity, fast drainage pores, slow drainage pores, water pores. available, and unavailable pore water were 0.90 g cm-3, 2.30 g cm-3, 7.77%, 23.54%, 8.83%, 11.62%, and 249.17%, and the yield of dry shelled corn was 7.85 tons ha- 1.Keywords: Granular compost, Corn, Inceptisol, inorganic fertilizer

INTEGRATED NUTRIENT MANAGEMENT IN POTATO WITH COMPOST MADE THROUGH DIFFERENT BIO-DEGRADATION PROCESSES

To achieve the goal of safe and sustainable food, the only realistic option now-a-days lies with the introduction of a low input farming system concept i.e. organic and integrated agriculture. Keeping in view the present scenario, a study was undertaken in Satyapole village, Haringhata block of Nadia district, West Bengal on integrated nutrient management in potatoes during rabi 2018 and 2019. The efficacy of different composts, in terms of their quality, easiness of preparation along with yield and economic attributes were accessed for the high nutrient loving crop, potato. The experiment was planned out in randomized block design (RBD) with 5 treatments and 4 replications. High yield with a marginal difference was found among all the treatments with integrated management. But, the treatment with 50% of recommended inorganic fertilizer dose (recommended dose N:P: K @ 200:150:150 kg/ha, 1/3 N, full P and 1/3 K as basal; 1st and 2nd top dressing with 1/3 N and 1/3 K) and vermicompost @ 5 ton/ha showed the best result. According to the B: C ratio composting with NOVCOM showed the best result whereas, in terms of the bio-degradation process with respect to its end-product quality, easiness of procedure, and cost, compost made through waste decomposer and NOVCOM has better results in comparison with vermicompost.