Consulta: subjectFacets:"Sandy soil"
Registros recuperados: 10
Data/hora: 03/06/2024 04:26:39

Solos areno-quartzosos no cerrado: caracteristicas, problemas e limitacoes ao uso.
Provedor de dados: Informação Tecnológica em Agricultura (Infoteca-e)
Autores: SPERA, S. T.; REATTO, A.; MARTINS, E. de S.; CORREIA, J. R.; CUNHA, T. J. F.
A expansao da agricultura no Cerrado levou a ocupacao de areas de ocorrencia de Areias Quartzosas. Esses solos apresentam textura arenosa (85% ou mais de fracao areia). Areias Quartzosas ou Neossolos Quartzarenicos representam 15% da area do cerrado. Sao solos cuja estrutura e formada basicamente de graos de quartzo, sendo portanto altamente suscetiveis a erosao, apresentam drenagem excessiva, baixa retencao de agua e lixiviacao de nutrientes. Quimicamente sao pobres em bases trocaveis, alicos e a capacidade de troca cationica desses solos depende quase que exclusivamente da materia organica. Os solos arenosos sao formados de rochas areniticas ou quartziticas. A fracao argila e dominada por quatzo e caulinita. Por serem solos com baixa capacidade de...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Arenossolo; Areia Quartzosa; Arenoso; Brasil; Brazilian savanna; Land capability; Lande use; Quartzipsamment; Sandy soil; Savanna; Use; Uso.; Aptidão Agrícola; Cerrado; Reconhecimento do Solo; Terra; Solo; Solo Arenoso; Uso da Terra.; Arenosols; Brazil; Land; Soil; Soil surveys.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/555305

Soil solarization for weed control in carrot
Provedor de dados: Pesquisa Agropecuária Brasileira
Autores: MARENCO,RICARDO ANTONIO; LUSTOSA,DENISE CASTRO.
Soil solarization is a technique used for weed and plant disease control in regions with high levels of solar radiation. The effect of solarization (0, 3, 6, and 9 weeks) upon weed populations, carrot (Daucus carota L. cv. Brasília) yield and nematode infestation in carrot roots was studied in São Luís (2º35' S; 44º10' W), MA, Brazil, using transparent polyethylene films (100 and 150 mm of thickness). The maximum temperature at 5 cm of depth was about 10ºC warmer in solarized soil than in control plots. In the study 20 weed types were recorded. Solarization reduced weed biomass and density in about 50% of weed species, including Cyperus spp., Chamaecrista nictans var. paraguariensis (Chod &amp;amp; Hassl.) Irwin &amp;amp; Barneby, Marsypianthes chamaedrys...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Commelina benghalensis; Cyperus; Organic farming; Soil heating; Mulching; Plastic film covers; Soil desinfection; Nematode controls; Sandy soil.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001000014

Yield of soybean, pasture and wood in integrated crop-livestock-forest system in Northwestern Paraná state, Brazil
Provedor de dados: Revista Ciência Agronômica (RCA)
Autores: Franchini,Julio Cezar; Balbinot Junior,Alvadi Antonio; Sichieri,Fernando Ribeiro; Debiasi,Henrique; Conte,Osmar.
The integrated crop- livestock-forest system can enhance the production of soybeans, meat and wood in regions characterized by sandy soils and warm climate. The aim of this study was to evaluate the yield of soybean, Urochloa ruziziensis grass and eucalyptus in an integrated system during the first four years after the establishment of eucalyptus in the northwestern region of Paraná state, Brazil. The experiment was established in October 2009, using soybean (summer) -U. ruziziensis (autumn/winter) succession between single rows of Corymbia maculata (eucalyptus species). The spacing between tree rows and eucalyptus plants in the row were 14 and 4.2 m, respectively. Adjacent plots had the same soybean-U. ruziziensis succession, but without eucalyptus. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus; Glycine max L.; Urochloa ruziziensis; Sandy soil; Spatial and temporal variability.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500016

Replacing the (inefficient) manual runoff sampling method used in Brazil – a prototype sample splitter
Provedor de dados: Scientia Agricola
Autores: Samuel-Rosa,Alessandro; Moura-Bueno,Jean Michel; Dalmolin,Ricardo Simão Diniz.
ABSTRACT The method used to sample the runoff collected from soil erosion plots can be a significant source of error. In this study, we performed a laboratory experiment to evaluate the efficiency of the runoff sampling method most commonly used in Brazil. It is based on the manual homogenization and sampling of the collected runoff. Using soil material with 583 g kg–1 of sand and 89 g kg–1 of clay, the manual sampling method was tested for its ability to produce representative samples of artificial suspensions with a concentration of 2, 10 and 50 g L–1 of total solids. An underestimation of 30 % or more of the concentration of total solids was observed, with a variation of the same magnitude (CV between 20 and 45 %). We then developed a prototype sample...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erosion monitoring; Soil loss; Sandy soil; Uncertainty.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401402

การจัดการธาตุอาหารพืชที่เหมาะสมเพื่อการผลิตอ้อยในดินทรายภาคตะวันออก
Provedor de dados: Thai Agricultural Research Repository
Autores: Wanlee Amonpon; Pinit Kalayasilapin; Suphakarn Luanmanee; Srisuda Thippayarugs; Kobkiet Paisancharoen.
To increase sugarcane production in present situation of costly chemical fertilizers, it a good nutrient management which is specified to production area is required. Therefore, the response of sugarcane to nutrient management in sandy soil in the Eastern part of Thailand had been investigated. The study aimed to get the most effectively recommendation of fertilizer application for sugarcane grown on sandy soils. The experiment was conducted on Sattahip (Sh) sandy soil, at Muang district, Rayong province. The experimental design was a split-split plot with 3 replications. Main plot was compresed of 2 soil improvements which were 1) without soil amendment, 2) amendment with 100 kg/rai of dolomite and 1,000 kg/rai of filtercake. Sub-plot consisted of 2...
Tipo: Collection
Palavras-chave: Sugarcane production; Optimal crop nutrient management; Sandy soil; Eastern region; Thailand; อ้อย; การจัดการธาตุอาหารพืช; ดินทราย; ผลผลิต; ประสิทธิภาพของปุ๋ยไนโตรเจน; ชุดดินสัตหีบ; ภาคตะวันออก; ประเทศไทย.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5556

การจัดการธาตุอาหารพืชที่เหมาะสมเพื่อการผลิตอ้อยในดินทราย ภาคตะวันออกเฉียงเหนือ
Provedor de dados: Thai Agricultural Research Repository
Autores: Suphakarn Luanmanee; Kobkiet Paisancharoen; Chayan Pakdeethai; Srisuda Thippayarugs; Wanlee Amonpon.
An effective nutrient management for plant cane production on sandy soil was investigated. This aimed to be a guideline of fertilizer recommendation for plant cane production on sandy soil in the Northeast of Thailand. The experiment was conducted in Ban Phai soil series at Khon Kaen Province. The experimental design was split-split plot with 3 replications. Main plots comprised 1) without soil amendment and 2) amendment with 100 kg/rai of dolomite and 1,000 kg/rai of filtercake compost. Subplots consisted of Khon Kaen 3 and LK92-11 sugarcane varieties. Sub-subplots were fertilizer application levels i.e. 0-6-18, 9-6-18, 18-6-18, and 27-6-18 kg N-P2O5-K2O/rai. The results showed that average yield of plant cane grown on infertile Ban Phai soil series...
Tipo: Collection
Palavras-chave: Sugarcane; Nutrient management; Nitrogen use efficiency; Filtercake compost; Sandy soil; Ban Phai soil series; Northeast of Thailand; อ้อย; การจัดการธาตุอาหาร; ปุ๋ยไนโตรเจน; ปุ๋ยหมักกากตะกอน; หม้อกรองอ้อย; ดินทราย; ชุดดินบ้านไผ่; พันธุ์; ผลผลิต; ภาคตะวันออกเฉียงเหนือ; จ.ขอนแก่น.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5552

ผลของการไถพรวนต่อสมบัติดินและผลผลิตข้าวโพดที่ปลูกบนดินชุดดินวาริน
Provedor de dados: Thai Agricultural Research Repository
Autores: Pattra Prasertsombut; Suphicha Thanachit; Somchai Anusontpornperm; Irb Kheoruenromne.
Study on the effect of tillage on the change of soil properties, nitrogen leaching away from root zone, yield and plant nutrient uptake of maize grown on Warin soil series (Arenic Haplustult) was carried out in Ban Nonsomboon, Krissana sub-district, Sikhiu Nakhon district, Nakhon Ratchasima province. The experimental design employing randomized complete block design consisted of four various tillage methods as follow; conventional tillage (using 3-disc followed by 7-disc plough), reduced tillage (using only 7-disc plough), mulch tillage (using 7-disc plough with plant residues left to cover soil surface) and no-tillage. Results showed that conventional tillage tended to give a maximum grain yield of 566 kg/rai. The lowest amount of grain yield (479 kg/rai)...
Tipo: Collection
Palavras-chave: Maize; Soil property; Conventional tillage; Conservation tillage; Sandy soil; Warin soil; ข้าวโพด; ดินทราย; คุณสมบัติดิน; การไถพรวนดินปกติ; การไถพรวนดินอนุรักษ์; การสูญเสียไนโตรเจน; ชุดดินวาริน.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5286

Physiological effect of melatonin, IAA and their precursor on quality and quantity of chickpea plants grown under sandy soil conditions
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Dawood, Mona Gergis.
The physiological effect of melatonin, IAA and their precursor (tryptophan) as seed priming on quantity and quality of chickpea plants was investigated during two growing seasons of 2013/2014 and 2014/2015 under sandy soil conditions at the Research and Production Station, National Research Centre, Nubaria Province, Behaira Governorate, Egypt. Data show that melatonin treatments showed the most pronounced effect on vegetative growth parameters followed by IAA and tryptophan treatments. The highest significant increase in dry weight of shoot/plant was achieved by melatonin treatments at 0.5 and 1.0mM. Moreover, melatonin treatments at 0.25 and 0.5 mM were the most pronounced treatments caused the highest significant increase in total photosynthetic pigments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Melatonin; IAA; Tryptophan; Chickpea; Sandy soil.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4377

Floristic and structural patterns in South Brazilian coastal grasslands
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: MENEZES,LUCIANA S.; MÜLLER,SANDRA C.; OVERBECK,GERHARD E.
ABSTRACT The natural vegetation of Southern Brazil's coastal region includes grasslands formations that are poorly considered in conservation policy, due to the lack of knowledge about these systems. This study reports results from a regional-scale survey of coastal grasslands vegetation along a 536 km gradient on southern Brazil. We sampled 16 sites along the coastal plain with 15 plots (1 m²) per site. All sites were grazed by cattle. We estimated plant species cover, vegetation height, percentage of bare soil, litter and manure, and classified species according to their growth forms. We found 221 species, 14 of them exotic and two threatened. The prostate grasses: Axonopus aff.affinis, Paspalum notatum and P. pumilumwere among the most important...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pampa biome; Campos; Conservation; Grazing; Sandy soil.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000502081

Impacts of fertigation via surface and subsurface drip irrigation on growth rate, yield and flower quality of Zinnia elegans
Provedor de dados: Bragantia
Autores: Elhindi,Khalid; El-Hendawy,Salah; Abdel-Salam,Eslam; Elgorban,Abdallah; Ahmed,Mukhtar.
ABSTRACT Drip irrigation combined with split application of fertilizer nitrogen (N) dissolved in the irrigation water (i.e. drip fertigation) is commonly considered best management practice for water and nutrient efficiency. This research was conducted to study the influence of drip fertigation in combination with or without N fertilizers on vegetative growth, flowering quality, nutrients concentration in plants and soil fertility after the harvest of zinnia ( Zinnia elegans). A field experiment was conducted using a randomized complete block split plot design with two systems of drip irrigation (surface and subsurface drip irrigation) and 4 nitrogen rates (0, 30, 60, and 120 kg∙ha–1) as the main and split plots, respectively. The results revealed that...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Available soil nutrients; Irrigation system; Sandy soil; Yield attributes; Zinnia elegans.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000100096