Fertilizers Application
Mostrando 25-36 de 187 artigos, teses e dissertações.
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25. Crop Yield Responses to Sulfur Fertilization in Brazilian No-Till Soils: a Systematic Review
ABSTRACT Sulfur (S) fertilization recommendations for grain crops in Brazil were formerly established from studies on crops with a low yield potential grown on soils under conventional tillage (CT). However, the subsequent adoption of no-tillage (NT) altered S dynamics in the soil, making it necessary to carefully evaluate the applicability of these S fertil
Rev. Bras. Ciênc. Solo. Publicado em: 14/02/2019
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26. Precision production environments for sugarcane fields
ABSTRACT: Sugarcane (saccharum spp.) in Brazil is managed on the basis of “production environments”. These “production environments” are used for many purposes, such as variety allocation, application of fertilizers and definition of the planting and harvesting periods. A quality classification is essential to ensure high economic returns. However, t
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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27. Wood and Briquette Density Under the Effect of Fertilizers and Water Regimes
ABSTRACT The aim of this study was to evaluate the effects of potassium and sodium fertilization (control: 4.5kmol.ha-1 of KCl and 4.5kmol.ha-1 of NaCl), and water regimes (100% and 63% rainfall with artificial exclusion) on wood and briquette density in Eucalyptus grandis trees at 5 years, and the application of X-ray densitometry on the quality of briquet
Floresta Ambient.. Publicado em: 07/01/2019
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28. Soil physical indicators of management systems in traditional agricultural areas under manure application
ABSTRACT Studies of the successive application of manure as fertilizer and its combined effect with long-term soil management systems are important to the identification of the interdependence of physical attributes. The aim of this study was to evaluate changes in the physical properties of a Rhodic Kandiudox under management systems employing successive ap
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-08
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29. MEJORAMIENTO DEL RENDIMIENTO Y CALIDAD DE FRUTO Y PSEUDOFRUTO DE MARAÑON CON UN CICLO DE FERTILIZACIÓN ORGÁNICA
ABSTRACT This study aimed to evaluate the effect of organic fertilizers on production and quality of fruits and pseudo fruits on adult trees of Anacardium occidentale L. by a productive cycle. We established three treatments; organic fertilization (BIO), synthetic fertilization (SF), and unfertilized (UF). The number of panicles m-3, number of flowers per p
Rev. Bras. Frutic.. Publicado em: 18/12/2017
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30. Polymers and its applications in agriculture
Graphical Abstract Abstract Polymers are a class of soft materials with numerous and versatile mechanical and chemical properties that can be tuned specific to their application. Agriculture is an expanding area due to the requirement for indispensable food to meet the demands of a growing global population. Consequently, development of technology to imp
Polímeros. Publicado em: 21/09/2017
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31. Assessment of Rice Associated Bacterial Ability to Enhance Rice Seed Germination and Rice Growth Promotion
ABSTRACT The application of beneficial bacteria has recently been used for sustainable agriculture. In current research, 71 bacterial isolates were obtained from rice plant and the rhizosphere soil of different paddy fields in Guilan province, Iran. After primitive investigation, 40 bacteria with typical predominant characteristics were selected. By PCR-RFLP
Braz. arch. biol. technol.. Publicado em: 17/08/2017
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32. IN SITU MONITORING OF A CONTROLLED RELEASE OF FERTILIZERS IN LETTUCE CROP
ABSTRACT: Agriculture has sought ways to increase food production to meet global demands, intensifying dependence on natural resources. An alternative for intensive production has relied on the use of “smart” fertilizers that release nutrients in a controlled manner. Biodegradable polymers containing fertilizers has presented economic and environmental a
Eng. Agríc.. Publicado em: 2017-08
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33. MECHANIZED AND INDIVIDUALIZED APPLICATION OF N-P-K IN COMBINED OPERATIONS IN SUGARCANE
ABSTRACT: A new concept of fertilizer machine is under development and shows as differential individually fertilizer application, that is sources of N, P and K are applied separately for the purpose of improving the distribution efficiency of the quantities applied. The aim was to compare the quality of the individualized mechanized distribution of N, P and
Eng. Agríc.. Publicado em: 2017-08
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34. Phosphorus fractions in apple orchards in southern Brazil
ABSTRACT Phosphorus (P) applications at dosages higher than the necessary may cause P buildup in the soil labile fractions and, consequently, pollution of water sources. This study aimed to assess accumulation of P fractions as well as the parameters of adsorption isotherms in soil profiles having a history of application of phosphate fertilizers and cultiva
Bragantia. Publicado em: 29/05/2017
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35. A practical approach for assessing the efficiency of coated urea on controlling nitrogen availability
ABSTRACT We propose an approach for assessing the efficiency of coating materials on controlling nitrogen (N) availability to plants. It is based on the use of coated and soluble urea (UR) applied to corn over 3 growing cycles, as follows: coated UR with longevity of 2 (UR-2m) or 4 months (UR-4m) with application of 900 mg N∙pot−1 at the beginning of the
Bragantia. Publicado em: 15/05/2017
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36. Non-invasive spectral detection of the beneficial effects of Bradyrhizobium spp. and plant growth-promoting rhizobacteria under different levels of nitrogen application on the biomass, nitrogen status, and yield of peanut cultivars
ABSTRACT High-throughput phenotyping using spectral reflectance measurements offers the potential to provide more information for making better-informed management decisions at the crop canopy level in real time. The aim of this study was to investigate the suitability of hyperspectral reflectance measurements of the crop canopy for the assessment of biomass
Bragantia. Publicado em: 15/05/2017