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Search Results: 1 - 10 of 6923 matches for " Organic Fertilizers "
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Respuesta de la morera (Morus alba) a niveles crecientes de nitrógeno orgánico
Elizondo-Salazar,J. A;
Pastos y Forrajes , 2010,
Abstract: a trial was conducted at the experimental station "alfredo volio mata" of the university of costa rica, in order to evaluate the application of increasing nitrogen rates (from an organic fertilizer) on the biomass production and crude protein of mulberry. the experimental period was 12 months. a mulberry plantation with 12 years of establishment, planted with spacing of 0,9 x 0,40 m (27 777 plants/ha), was used. the design consisted in completely randomized blocks with four treatments: 0, 150, 300 and 450 kg n/ha/year. the plants were pruned at 0,6 m above the soil level at the beginning of the trial and then every 90 days. the organic manure was applied in two equal dosages during the rainy season. the leaves and stems were separated and analyzed to determine the dry matter and crude protein content. no significant differences were found in the dm content or dm yield among treatments. similar performance was found in the crude protein content of the whole plant and the stem; however, the cp content was higher with the highest nitrogen application, which significantly differed (p<0,05). it is concluded that the applied organic nitrogen rates neither showed remarkable responses in total biomass production, nor important alterations were observed in the structural proportions of the plants manifesting a change in the yield of leaves and stems.
Effect of organic fertilizers used in sandy soil on the growth of tomatoes  [PDF]
Yongxia Hou, Xiaojun Hu, Wenting Yan, Shuhong Zhang, Libin Niu
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.45B006
Abstract:

In order to reveal the regulating capacity of organic fertilizers on sandy soil, pots experiments were carried out. The growth of tomatoes planted on sandy soil amended by organic fertilizers was measured. Organic fertilizers can be helpful to improve the plant height, stem diameter, the aerial parts fresh weight, root fresh weight, leaf photosynthetic rates and photosynthesis, and lay a good foundation for the growth of   tomatoes. The effect of organic fertilizer is the most significant. Among all the treatments of adding 2.5%, 5%, 10% organic fertilizers, adding 10% organic fertilizers are the best. It can significantly enhance the growth and photosynthesis of tomatoes, and it is among the best of these three soil treatments for sandy soil.

Natural Radioactivity and Dose Assessment for Brands of Chemical and Organic Fertilizers Used in Saudi Arabia  [PDF]
W. R. Alharbi
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.43047
Abstract:

The activity concentration of naturally occurring radionuclides 40K, 226Ra and 232Th have been measured in different brands of fertilizer samples in Saudi Arabia using sodium iodide gamma spectrometry. The results of measurements showed that the mean (ranges) of specific activities for 226Ra, 232Th and 40K activities in the nitrogen, phosphorus and potassium fertilizers are 64 (35.8 - 120.7), 17 (3.2 - 56.8) and 2453 (744.9 - 4227.1) Bq/kg, respectively. With respect to organic fertilizers under investigation, the average radioactivity of 226Ra, 232Th and 40K are 42, 10 and 333 BqKg

The Influence of Bioproducts on Mycorrhizal Occurrence and Diversity in the Rhizosphere of Strawberry Plants under Controlled Conditions  [PDF]
Lidia Sas Paszt, Eligio Malusá, Beata Sumorok, Loredana Canfora, Edyta Derkowska, S?awomir G?uszek
Advances in Microbiology (AiM) , 2015, DOI: 10.4236/aim.2015.51005
Abstract: The new products obtained from natural resources are an alternative to methods based on traditional mineral fertilizers, which are destructive for soil mycorrhizal communities. Our experiment was carried out to evaluate the effect of organic fertilizers and amendments of very diverse composition on mycorrhizal abundance and diversity, as well as on root growth, in strawberry plants cv. “Honeoye”. The plants were grown in rhizoboxes filled with a podsolic soil. The plants were treated with granulated bovine manure, vermicompost extract, humates extract, plant extract, extract from seaweed species reinforced with humic and fulvic acids, a consortium of beneficial soil organisms, a stillage from yeast production and a solution of titanium. Plants treated with products and the microorganisms consortium also received half dose of manure. A standard mineral fertilization (NPK) and an unfertilized control were also included. The bioproducts based on humus-like substances and the yeast stillage had the greatest positive influence on the colonization of roots by arbuscular mycorrhizal fungi (AMF). The different treatments affected the diversity of AMF species present in the rhizospheric soil. All organic products, even though providing a significantly low amount of nutrients, enhanced root growth characteristics in comparison to the mineral fertilization.
Conference Paper: Green Industry Adapted to Recycling Needs of Lubumbashi City and Surrounding Areas in Democratic Republic of the Congo  [PDF]
Topwe Milongwe Mwene-Mbeja
Green and Sustainable Chemistry (GSC) , 2019, DOI: 10.4236/gsc.2019.91002
Abstract: The interest of this conference is agricultural, environmental, bioenergetics, and sanitary. In that context, domestic, agricultural and industrial environments produce organic waste, which needs to be collected, selected, stored and recycled properly in order to avoid environmental pollution and promote agriculture. The green Industry proposed involves the conversion of natural, non-toxic organic waste in order to efficiently produce organic fertilizers for agriculture. These types of fertilizers from biological origin are suitable because they are not toxic for human and the environment. Enzymatic reactions described in this presentation concern mainly the hydrolysis of proteins, sugars and lipids, the acidification of intermediate products from hydrolysis, the formation of acetate, and the production of methane. In other words, this review is timely as it discusses for the chemical behavior or the reactivity of different functional groups to better understand the enzymatic catalysis in the transformations of residual proteins, carbohydrates, and lipids to generate biomethane and fertilizers. In the same perspective, this review is to enrich the documentation related to organic reactions catalyzed by enzymes, which occur in the anaerobic degradation of residual organic substances, with emphasis on the structures of organic compounds and reaction mechanisms. This will allow understanding the displacement of the electrons of a reactive entity rich in electrons to another reactive entity that is poor in electrons to form new bonds in products.
Bio-diesel waste as tailored organic fertilizer for improving yields and nutritive values of Lycopercicum esculatum (tomato) crop
Chaturvedi,S; Kumar,A;
Journal of soil science and plant nutrition , 2012, DOI: 10.4067/S0718-95162012005000033
Abstract: the present study focused on utilization of the de-oiled jatropha cake, a bio-waste from the bio diesel extraction process, as organic fertilizer. tomato crop was subjected to different treatments comprising varying composition of the jatropha cake fertilizer, applied at varying age of plant life-cycle. the impact on yield, morphological and nutritional parameters was studied. results revealed that an optimal (2-3 % by weight) dose applied on the soil at the time of onset of flowering (around 45 days), significantly enhanced the yield along with improvements in morphological parameters. there were significant improvements in key nutrients viz. protein, vitamin c and reducing sugars. high value of key nutrients like tss (total soluble solid), vitamin c, proteins, reducing sugar and tomato fruit yield were obtained with soil + 3% cake mixed in 60 day transplant. these results indicate that composted de-oiled jatropha cake has tremendous potential of being utilized in a cost effective way as tailored organic fertilizer, as a replacement of chemical fertilizers.
Bio-diesel waste as tailored organic fertilizer for improving yields and nutritive values of Lycopercicum esculatum (tomato) crop
Chaturvedi,S; Kumar,A;
Journal of soil science and plant nutrition , 2012, DOI: 10.4067/S0718-95162012005000033
Abstract: the present study focused on utilization of the de-oiled jatropha cake, a bio-waste from the bio diesel extraction process, as organic fertilizer. tomato crop was subjected to different treatments comprising varying composition of the jatropha cake fertilizer, applied at varying age of plant life-cycle. the impact on yield, morphological and nutritional parameters was studied. results revealed that an optimal (2-3 % by weight) dose applied on the soil at the time of onset of flowering (around 45 days), significantly enhanced the yield along with improvements in morphological parameters. there were significant improvements in key nutrients viz. protein, vitamin c and reducing sugars. high value of key nutrients like tss (total soluble solid), vitamin c, proteins, reducing sugar and tomato fruit yield were obtained with soil + 3% cake mixed in 60 day transplant. these results indicate that composted de-oiled jatropha cake has tremendous potential of being utilized in a cost effective way as tailored organic fertilizer, as a replacement of chemical fertilizers.
IDENTIFICACIóN DE POBLACIONES MICROBIANAS EN COMPOST DE RESIDUOS ORGáNICOS DE FINCAS CAFETERAS DE CUNDINAMARCA
Escobar Escobar,Natalia; Mora Delgado,Jairo; Romero Jola,Néstor Jaime;
Boletín Científico. Centro de Museos. Museo de Historia Natural , 2012,
Abstract: agricultural organic waste can be taken advantage of if one takes into account that it is a reusable source of nutrients and energy, reason why processes such as composting can improve its quality through aerobic decomposition. in an organic material composting process from coffee farms located in the department of cundinamarca (coffee pulp, bananas, manure and bovine manure) populations of bacteria, treponema, and fungi were qualitatively and quantitatively characterized. the characterization of microbial populations was carried out through the application of techniques of serial dilution in selective culture ways and microscopy and macroscopia techniques. micro-organisms of greatest importance found in pure substrates and their mixes were: for bacteria, the genera pseudomonas and bacillus; for treponema streptomyces and fungi, aspergillus and penicillium.
Microbial Characteristics of Vertisol Under Different Fertilization Systems
Leka MANDI?,Dragutin DJUKI?,Marijana Pesaokvi?
Journal of Central European Agriculture , 2012, DOI: 10.5513/jcea01/13.1.1005
Abstract: The present study evaluates the effect of increasing rates of mineral nitrogen (90; 120; 150 kg×ha-1), liquid manure (80 t×ha-1) and solid manure (45 t×ha-1) on the microbial properties of vertisol (total number of microorganisms, numbers of actinomycetes and cellulolytic microorganisms) under maize. The research results showed dependence of the number of the test groups of microorganisms on the type and rate of fertilization, as well as on the date and zone of sampling. Namely, lower nitrogen fertilization rates (90 and 120 kg×ha-1) induced a significant increase in the total number of microorganisms, whereas the high rate (150 kg×ha-1) had a depressive effect, especially in maize edaphosphere. However, the numbers of actinomycetes and cellulolytic microorganisms were not reduced under these treatments. The organic fertilizers applied had a stimulatory effect on the above soil biological parameters.
Combined Effect of Organic Manures and Inorganic Fertilizers on the Growth and Yield of Hybrid Rice (Palethwe-1)  [PDF]
Kyi Moe, Kumudra Win Mg, Kyaw Kyaw Win, Takeo Yamakawa
American Journal of Plant Sciences (AJPS) , 2017, DOI: 10.4236/ajps.2017.85068
Abstract: We investigated the effect of combining organic and inorganic fertilizers on the growth and yield of hybrid rice (Palethwe-1) in the dry and wet seasons of 2015. Four quantities of inorganic fertilizer were used in the main plot [0%, 50%, 75%, and 100% nitrogen, phosphorus, and potassium (NPK)] based on the recommended amounts of 150 kg N ha-1, 70 kg P2O5 ha-1, and 120 kg K2O ha-1, while different organic manures were applied to subplots [no organic manure (O0), cow manure (Oc), poultry manure (Op), and vermicompost (Ov); all at 5 t·ha-1] as part of a split-plot experimental design with three replicates. In both seasons, significant differences in growth parameters including number of tillers hill-1, soil-plant analysis development (SPAD) values, total dry matter, yield, and yield components were observed in plants supplied with different inorganic fertilizers. The 100% NPK (I100) fertilizer produced the maximum yield but similar yields were achieved in plots supplied with 50% NPK (I50) and 75% NPK (I75). Significant differences in growth and yield parameters were also found in crops supplied with organic manures. Although identical quantities were supplied, Op produced the best growth parameters in both seasons including total dry matter, yield, and yield components. Oc also performed well. Combining inorganic and organic fertilizers demonstrated that I50 together with Op (5 t·ha-1) provided similar growth, total dry matter, and yield parameters to I100 in both seasons. Oc (5 t·ha-1) plus I75 also achieved similar yields to I100. This study demonstrates that the combined application of inorganic fertilizers and organic manures has the potential to reduce chemical fertilizer usage without decreasing the yield of hybrid rice, and can enhance the growth, yield, and yield components of Palethwe-1.
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