scholarly journals Title “Organic Fertilizers” in Vietnam’s Markets: Nutrient Composition and Efficacy of Their Application

2018 ◽  
Vol 10 (7) ◽  
pp. 2437 ◽  
Author(s):  
Hoang Quynh ◽  
Shima Kazuto

Organic fertilizers have recently been gaining popularity; however, their governance is not completely assessed in developing countries. This study investigated the nutrient composition of so-called organic fertilizers in Vietnam’s markets and issues related to their production, and evaluated their potential to contaminate the groundwater. We analyzed the physicochemical properties of 12 domestic and four imported products of the fertilizers, and conducted a cultivation experiment in sandy soil with the fertilizer applied at a rate of 200 mg N kg−1 soil using an automatic watering apparatus in a greenhouse. We further studied the production of an “organic fertilizer” from coffee by-products. The nutrient content greatly varied among domestic products, whereas they were quite similar among imported products. The product packaging of the collected samples lacked information regarding raw materials. Two thirds of the domestic products contained over 30% of the total N in the inorganic form, implying that the N content dramatically increased in the fertilizers rather than in their supposed raw materials. The stages involved in the production were composting, the addition of extra soil as a bulking agent, and the mixing-in of chemical substances to increase the nutrient content before packing. The remarkably high ratio of inorganic N to total N was attributed to excessive N leaching from soil by the application of domestic fertilizers. These results suggested the need for quality criteria guidelines for organic fertilizers in Vietnam that underline not only nutrient levels, but also the control of raw materials and production process of compost, because they are closely related to nutrient uptake and the leaching loss of nutrients.

2018 ◽  
Vol 16 (2) ◽  
pp. 152
Author(s):  
Risvan Anwar ◽  
Djatmiko Djatmiko

Many sources of raw materials which allegedly can enrich the nutrient content in the organic fertilizer. The weakness of organic fertilizer for this is the low level of nutrients contained in them.This study aims to determine the nutrient content contained in various combinations of organic fertilizer raw materials with rabbit animal waste as the main raw material.This study aims to determine the nutrient content in various combinations of organic fertilizer raw materials with rabbit animal waste as the main raw material. The experiment used a completely randomized design with raw materials as treatments, Livestock Waste Rabbit (LTK), Cow Manure (PKS) and Abu Straw Rice (AJP). Such treatment: B1 = LTK; B2 = LTK: PKS = 2: 1; B3 = LTK: AJP = 3: 1; B4 = LTK: PKS: AJP = 6: 2: 1; B5 = LTK: PKS: AJP = 5: 2: 1; B6 = LTK: PKS: AJP = 4: 2: 1; B7 = LTK: PKS: AJP = 3: 2: 1; B8 = LTK: PKS: AJP = 2: 2: 1; B9 = LTK: PKS: AJP = 1: 2: 1. The research concluded (a) Organic fertilizers are made from various materials raw has fulfilled SNI 19-7030-2004 about the specifications of Organic Waste Compost. (B) A combination of organic fertilizer raw materials significantly affect the nutrient content of manure. (C) Organic fertilizers expectations are: (a) Raw materials of animal wastes rabbit (LTK), (b) LTK: PKS: AJP = 6: 2: 1, (c) LTK: PKS: AJP = 2: 2: 1 and (d) LTK: PKS: AJP = 1: 2: 1.


2020 ◽  
Vol 1 (2) ◽  
pp. 89
Author(s):  
Mohammad Dian Kurniawan ◽  
Deny Andesta ◽  
Nina Aini Mahbubah

Fertilization is an action in plant care. Fertilization provides additional nutrients for the soil. Fertilization has a large influence on plant growth and production. Fertilization consists of organic and inorganic fertilizers. Both of these fertilizers must be balanced so that the nutrient content can be maintained properly. The use of fertilizers an organic fertilizer that is widely used, but the use of chemical fertilizers on an ongoing basis will reduce the level of soil fertility. This must be balanced with organic fertilizer. One of the organic fertilizer is guano fertilizer. This fertilizer is fertilizer made from animal waste, namely bats. This fertilizer has a very good content including nitrogen, phosphorus, and potassium. Knowledgethis fertilizer will still be low, so that an introduction and practice about guano fertilizer is needed. Therefore a community service activity was carried out on the development of the manufacture of guano fertilizer. Guano fertilizer development is carried out in the form of granules (granules). The targets of this service are vocational students who are related to agriculture. Vocational students are selected as the young generation to know about organic fertilizers and are able to contribute to the implementation of the agricultural industry. Community service activities were carried out with a presentation of the theory and practice of making guano fertilizer. As a result of this activity, students learned about organic fertilizer, namely guano fertilizer and its contents, nutrient content in the soil, balance in maintaining nutrient content in the soil, the practice of making guano fertilizer, and the creation of granule form from guano fertilizer.


2019 ◽  
Vol 4 (2) ◽  
pp. 99-104
Author(s):  
Sri Anjar Lasmini ◽  
Idham Idham ◽  
Anthon Monde ◽  
Tarsono Tarsono

In the development of vegetable farming by the community, there are fundamental problems which are generally carried out conventionally with the use of synthetic fertilizers and pesticides to determine the success of their farming. With the farming system, the community suffers a lot of losses because the inputs used are relatively expensive and on the other hand the products become cheap because the quality is not guaranteed. The solution to this problem is to develop bio-culture organic fertilizers and bio-urine whose raw materials are available in the region. The partner village development program aims to conduct training on the making and development of liquid organic fertilizer bio-culture and biourine to support the cultivation of organic vegetables. The method of approach applied is technology transfer (TT) and entrepreneurship capacity building (ECB) which is carried out with the Participatory Rural Approach (PRA) approach ) which in its implementation uses the method of lecture/discussion, training, making demo plotting, and assistance. The results achieved in the implementation of this program were that participants were able to make and develop liquid organic bioculture fertilizers and biourin and apply it to their farms as an alternative to chemical fertilizers


2021 ◽  
Vol 10 (1) ◽  
pp. 71
Author(s):  
Dian Safitri ◽  
Nurul Magfirah ◽  
Irmawanty Irmawaty ◽  
Haerul Syam

The large number of rice fields in Borikamase Village, resulting in high production of hay, requires an appropriate effort to use straw into organic fertilizer or bokashi which is environmentally friendly as well as safe for plants. The use of straw into bokashi or organic fertilizer needs to be taught to the farming community, so the community service team focuses on providing assistance and training to the community in utilizing straw as a raw material in making bokashi by using microorganisms as the source of fermentation. In addition, the high price of synthetic fertilizers on the market makes farmers in Borikamase Village feel heavy in providing nutritional supplies to their agricultural areas, so that this training is expected to help farmers by obtaining fertilizers that are cheap, safe, and of good quality to fertilize. The existence of biotechnology applications, provides the right solution in overcoming the damage to bald mountains and the scarcity and high price of synthetic fertilizers, namely by processing straw into bokashi or organic fertilizers with high nutrient content and are safe for the environment. In addition, providing knowledge and skills for farming communities as agents of reform in restoring ecosystem balance through the application of bokashi made of straw on rice fields. Keywords: Training, Mentoring, Boricamase, Straw


2020 ◽  
Vol 6 (2) ◽  
pp. 140-148
Author(s):  
Pienyani Rosawanti

Water hyacinth, giant salvinia and water lettuce are widely available in Central Kalimantan that can be used as organic fertilizer. This study aims to determine the nutrient content of solid and liquid organic fertilizers in water hyacinth, giant salvinia and water lettuce fertilizers. The results showed that solid organic fertilizer/compost and water hyacinth, water lettuce and giant salvinia liquid fertilizer have nutrient content needed by plants. In solid fertilizers, the Nitrogen of giant salviniacontent was 2.43% and lack of the minimum standard of solid organic fertilizer, while Phospor and Potassium content were not included in the standard. In liquid organic fertilizer, Nitrogen, Phospor and Potassium content were not included in the minimum standard organic fertilizer requirements


2019 ◽  
Vol 32 ◽  
pp. 262-271
Author(s):  
Huda H. Aziz ◽  
Myson M. Kadim ◽  
Mohsen A. Desher

The experiment conducted during 2018-2019 to study effect of added 15 and 30 t.h-1 level of three kinds of decomposing organic fertilizers on some chemical properties for two varieties of tomato (Red flower F1 and Waad RZ) in field of agricultural experiments station college of Agriculture, University of Basrah. Results showed a significantly effect of hybrid (Red flower F1) compared with hybrid (Waad RZ) on leaves content of : Total chlorophyll, total N and total soluble carbohydrate, increased 10.6, 14.39 and 8.84% respectively. Results showed a significant effect of organic fertilizer especially 15 t.ha-1 poultry fertilizer on total chlorophyll and total N in leaves content with increase of 67.75 and 110.31% respectively, 30 t.ha-1 poultry fertilizer significantly increased of total P in leaves content increased 143.48%. Decomposing cattle fertilizer with 30 t.ha-1 significantly increased of total K in leaves content with increased 181.30% also corn residues fertilizer with 30 t.ha-1 significantly increased of total soluble carbohydrate with 109.89%. Interaction between experiment factors were significantly effect on total chlorophyll, K and soluble carbohydrate in leaves content. Study also revealed different influences of organic fertilizer as follow: The poultry fertilizer (15 t.ha-1) increased the total leaves content of chlorophyll and N with 67.75 and 110.31% respectively. While the poultry fertilizer (30 t.ha-1) significantly increased the total leaves content of P with 143.48%. The decomposed cattle fertilizer (30 t.ha-1) significantly increased the total leaves content of K with 181.30%. Whereas corn residues (30 t.ha-1) significantly raised the total leaves content of soluble carbohydrate with 109.89%.


2020 ◽  
Vol 898 ◽  
pp. 64-70
Author(s):  
Erna Lestianingrum ◽  
Misnen

Fertilization for agriculture and plantation nutrition still dominated by chemical fertilizers. Organic fertilizers utilization for soils is believed has not had the same quality as existing fertilizer standards. On the other hand, increasing waste problems has become environmental issues that have not been properly resolved. MSW process by using MBT Method is able to change the waste management system and produce RDF Fluff products as alternative fuels and compost fertilizers. Research have showed that the quality of organic fertilizer from the Mechanical Biological Treatment (MBT) process met the SNI 19-7030-2004 parameters with the total N = 1.38%, P2O5 = 0.66% and K2O = 2.34%. Production cost of making organic fertilizer is lower than NPK and the amount used for ground application is higher than NPK. Market confidence began gradually improving due to consumer increasing demand.


1969 ◽  
Vol 74 (2) ◽  
pp. 139-144
Author(s):  
Miguel A. Muñoz ◽  
Octavio Colberg ◽  
José A. Dumas

Four chicken manure samples (two fresh, one two months old and the other 24 months old) were evaluated for pH, total and available nutrient content, and total and exchangeable Al. Total N ranged from 2.47 to 3.72%, the lowest value corresponding to the 24-month-old manure. There was little variation among manures as to total P, Ca and K, averaging 18,588, 18,358 and 24,238 p/m, respectively. Total Mg and total Al were higher in the 2- and 24-month-old manures; however, no increase in the exchangeable fractions of these cations was observed. Exchangeable Ca ranged from 1,558 to 5,200 p/m; however, no specific pattern with age of the manure was observed. AH the K present in the manures was in the exchangeable form. Available P increased with age of the manure. This P fraction represented 10, 7, 68 and 97% of total P for fresh (1), fresh (2), 2-month-old, and 24-month-old manures, respectively.


2020 ◽  
Vol 48 (3) ◽  
pp. 1248-1259
Author(s):  
Raheleh AHMADPOUR ◽  
Nezam ARMAND

The organic fertilizers such as urban wet-waste compost and vermicompost can improve the physicochemical properties of soil and have a favourite effect on plants growth due to the high nutrient content, high water holding capacity, plant growth regulators, and beneficial microorganisms. In this regard, this study was conducted to evaluate the organic fertilizer mixture on the physiological and morphological indices of tomato seedlings under greenhouse conditions. The experiment was done as factorial in a completely randomized design with 3 replications. The evaluated factors included the vermicompost fertilizer (0, 10, 20, 30 wt %), and the urban wet-waste compost (0, 10, 20, 30 wt %). In evaluation of the simple-effects of vermicompost and urban wet-waste compost the results showed that the 30 wt % level compared to the control sample increased the leaf area (+12.28% and +9.33%). It also increased the number of leaves (+17.5% and +22.9%), dry weight of root (+17.3% and +16.9%), chlorophyll-b content (+4.9% and +12.3 %), carotenoids (+2.9% and +7.9 %), and the total chlorophyll content (+23.7% and +13.8%). Results of evaluating the treatments showed that the vermicompost and urban wet-waste compost mixture in 30 wt % level (V4C4) caused significant increase in the plant height, leaf dry weight, root length, relative water content, cell membrane stability coefficient, efficiency of photochemical performance of PSII and the chlorophyll-a content (compared to other treatments especially low levels of organic fertilizer consumption). According to the final results of this study, using the vermicompost and urban wet waste compost mixture in 30 wt % level is recommended to improve the morphological and physiological traits of tomato in greenhouse conditions.


Agriculture ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 109 ◽  
Author(s):  
Kyi Moe ◽  
Aung Htwe ◽  
Thieu Thu ◽  
Yoshinori Kajihara ◽  
Takeo Yamakawa

The decline in rice yields as a result of excessive chemical fertilizer (CF) inputs is a matter of great concern in rice-growing regions of Asia. In two-year’s field experiments, the nitrogen, phosphorus, and potassium (NPK) status, growth characteristics and yield of rice were examined by application of poultry manure (PM), cow manure (CM) and compost (CP). Organic fertilizers were applied as EMN (estimated mineralizable N) based on their total N content. Six treatments were assigned in a randomized complete block design: (1) no-N fertilizer (N0); (2) 50% CF (CF50), (3) 100% CF (CF100); 50% CF + 50% EMN from (4) PM or (5) CM or (6) CP. Compared with CF100, the CF50PM50 (total N ≥ 4%) accumulated higher N, P and K content in leaf, sheath, panicle and seeds, resulting in greater growth and yield. The CF50PM50 increased yield by 8.69% and 9.70%, dry matter by 4.76% and 5.27% over CF100 in both years. The continuous application of CF50CM50 (total N < 4%) and CF50CP50 (total N < 4%) treatments led to similar NPK contents but higher yields than those of CF100 treatment in 2018. In conclusion, the organic fertilizer (total N ≥ 4%) with the EMN method enhances higher N availability in each year. Continuous application of organic fertilizer (total N < 4%) over two years effectively increased N availability in the second year. The 50% organic fertilizer (total N ≥ 4%) and 50% CF led to increased NPK availability and rice yields over the 100% CF treatment, reducing CF usage and leading for sustainable agriculture.


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