scholarly journals The Response of Vegetative Growth to Soil Water Condition in Native Soybean Cultivar ‘Misato-zairai’

2016 ◽  
Vol 85 (2) ◽  
pp. 138-143 ◽  
Author(s):  
Kiyoshi Nagasuga ◽  
Atsushi Fukunaga ◽  
Chinami Higashi ◽  
Teruhisa Umezaki
Keyword(s):  
Soil Water ◽  
Vegetative Growth ◽  
Soybean Cultivar ◽  
Water Condition ◽  
Soil Water Condition

Soil water condition and small mammal spatial distribution in Inner Mongolian steppes, China

2003 ◽  
Vol 54 (4) ◽  
pp. 729-737 ◽  
Author(s):  
Guiming Wang ◽  
Wenqin Zhong ◽  
Qingqiang Zhou ◽  
Zuwang Wang
Keyword(s):  
Spatial Distribution ◽  
Soil Water ◽  
Small Mammal ◽  
Water Condition ◽  
Soil Water Condition

scholarly journals Effect of Soil Water Condition on the Properties of Potato Starch.

1992 ◽  
Vol 39 (3) ◽  
pp. 189-192 ◽  
Author(s):  
Satoshi KURINAMI ◽  
Michiyoshi KONO
Keyword(s):  
Soil Water ◽  
Potato Starch ◽  
Water Condition ◽  
Soil Water Condition

scholarly journals PRODUTO MODIS ASSOCIADO À CONDIÇÃO HÍDRICA NO SOLO PARA DIFERENCIAR PADRÕES NA VEGETAÇÃO NO MUNICÍPIO DE DOM ELISEU, PARÁ (MODIS PRODUCT ASSOCIATED WITH SOIL WATER CONDITION TO DISTINGUISH VEGETATION PATTERNS IN THE MUNICIPALITY OF DOM ELISEU, PARÁ)

2016 ◽  
Vol 19 ◽  
Author(s):  
Victor Afonso Marinho Pismel ◽  
Lucieta Guerreuri Martorano ◽  
Daiana Carolina Antunes Monteiro ◽  
Leila Sheila Silva Lisboa
Keyword(s):  
Soil Water ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Vegetation Patterns ◽  
Water Condition ◽  
Soil Water Condition ◽  
Moderate Resolution ◽  
Resolution Imaging ◽  
Moderate Resolution Imaging Spectroradiometer

Objetivou avaliar a dinâmica de padrões na vegetação usando NDVI (Normalized Difference Vegetation Index) associado à oferta hídrica no município de Dom Eliseu, no Pará com base na reflectância em áreas com cultivos anuais de grãos e plantios florestais, nos períodos de maior e menor deficiência de água no solo. Foram analisados dados meteorológicos para calcular balanços hídricos (CAD = 300 mm) e respostas em NDVI (Normalized Difference Vegetation Index) extraídos do sensor MODIS (Moderate Resolution Imaging Spectroradiometer). As imagens-índice (NDVI) referentes aos meses de janeiro a dezembro de 2012 foram processadas no aplicativo Envi 4.7 e reclassificadas no ArcGIS10.1. Os resultados apontaram variações temporais ao longo do ano, tanto relacionados aos sistemas de agrícolas de produção, quanto aos remanescentes florestais os quais indicavam associações à oferta hídrica na região e possíveis respostas fenológicas. Em Dom Eliseu, o mês de maior valor em NDVI foi em abril com mais 60% do município expressando manutenção das folhas e da capacidade fotossintética das plantas, pois os valores em NDVI foram superiores a 0,6. No período de agosto a setembro ocorrem as menores cotas pluviais, ocasionando déficits hídricos que atingem valores superiores a 70 mm. Observou-se que as respostas em NDVI foram mais expressivas no mês de outubro, totalizando 16% da área de estudo com valores entre 0,2 a 0,3, evidenciando reduzida expressão em resposta espectral na biomassa dos remanescentes de vegetação e plantios florestais. Conclui-se que existe sensibilidade do NDVI em resposta à condição hídrica no solo. Ao contabilizar-se as diferenças entre a reflectâncias no infravermelho próximo e no vermelho divididos pela soma dessas reflectância, os baixos valores de NDVI, reforçam que no período de maior deficiência hídrica há queda de folhas, pois a superfície imageada, responde com valores mais elevados no solo do que na vegetação.

iPOTs: Internet of Things‐based pot system controlling optional treatment of soil water condition for plant phenotyping under drought stress

2021 ◽  
Author(s):  
Yuko Numajiri ◽  
Kanami Yoshino ◽  
Shota Teramoto ◽  
Atsushi Hayashi ◽  
Ryo Nishijima ◽  
...  
Keyword(s):  
Drought Stress ◽  
Internet Of Things ◽  
Soil Water ◽  
Plant Phenotyping ◽  
Water Condition ◽  
Soil Water Condition

scholarly journals Effect of soil water condition on dormancy of Chenopodium album seed.

2011 ◽  
Vol 56 (3) ◽  
pp. 147-153
Author(s):  
Toshiyuki Imaizumi ◽  
Motoaki Asai ◽  
Hiroaki Watanabe ◽  
Akira Uchino
Keyword(s):  
Soil Water ◽  
Chenopodium Album ◽  
Water Condition ◽  
Soil Water Condition

scholarly journals Temporal and spatial variations of soil carbon dioxide, methane, and nitrous oxide fluxes in a Southeast Asian tropical rainforest

2010 ◽  
Vol 7 (5) ◽  
pp. 6847-6887 ◽  
Author(s):  
M. Itoh ◽  
Y. Kosugi ◽  
S. Takanashi ◽  
Y. Hayashi ◽  
S. Kanemitsu ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Soil Water ◽  
Co2 Flux ◽  
Spatial Variations ◽  
Ch4 Flux ◽  
Water Condition ◽  
Temporal And Spatial Variations ◽  
Soil Water Condition ◽  
Gas Fluxes ◽  
Temporal And Spatial

Abstract. To clarify the factors controlling temporal and spatial variations of soil carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) fluxes, we investigated these gas fluxes and environmental factors in a tropical rainforest in Peninsular Malaysia. Temporal variation of CO2 flux in a 2-ha plot was positively related to soil water condition and rainfall history. Spatially, CO2 flux was negatively related to soil water condition. When CO2 flux hotspots were included, no other environmental factors such as soil C or N concentrations showed any significant correlation. Although the larger area sampled in the present study complicates explanations of spatial variation of CO2 flux, our results support a previously reported bipolar relationship between the temporal and spatial patterns of CO2 flux and soil water condition observed at the study site in a smaller study plot. Flux of CH4 was usually negative with little variation, resulting in the soil at our study site functioning as a CH4 sink. Both temporal and spatial variations of CH4 flux were positively related to the soil water condition. Soil N concentration was also related to the spatial distribution of CH4 flux. Some hotspots were observed, probably due to CH4 production by termites, and these hotspots obscured the relationship between both temporal and spatial variations of CH4 flux and environmental factors. Temporal variation of N2O flux and soil N2O concentration was large and significantly related to the soil water condition, or in a strict sense, to rainfall history. Thus, the rainfall pattern controlled wet season N2O production in soil and its soil surface flux. Spatially, large N2O emissions were detected in wet periods at wetter and anaerobic locations, and were thus determined by soil physical properties. Our results showed that, even in Southeast Asian rainforests where distinct dry and wet seasons do not exist, variation in the soil water condition related to rainfall history controlled the temporal variations of soil CO2 flux, CH4 uptake, and N2O emission. The soil water condition associated with soil hydraulic properties was also the important controlling factor of the spatial distributions of these gas fluxes.

Habitat-specific responses of seed germination and seedling establishment to soil water condition in two Rheum species in the high Sino-Himalayas

2013 ◽  
Vol 28 (4) ◽  
pp. 643-651 ◽  
Author(s):  
Bo Song ◽  
Jürg Stöcklin ◽  
Yong-Qian Gao ◽  
Zhi-Qiang Zhang ◽  
Yang Yang ◽  
...  
Keyword(s):  
Seed Germination ◽  
Soil Water ◽  
Seedling Establishment ◽  
Water Condition ◽  
Soil Water Condition
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