نتایج جستجو برای: soil volume humidity

تعداد نتایج: 514415  

2013
Faten Hosney Fahmy Hanaa Mohamed Farghally Ninet Mohamed Ahmed A. A. Nafeh

Greenhouses are used for the main purpose of improving the environmental conditions in which plants are grown. There are many parameters can affect the growing of plants inside greenhouse, such as air temperature and relative humidity. The adjustment of these parameters is achieved by selecting appropriate control actions. This work proposes a controlling technique for greenhouse indoor tempera...

Journal: :Musamus AE Featuring Journal 2021

ABSTRACT
 
 The purpose of this study is to determine the effect shading and mulching on microclimates in tomato plants. This used a Randomized Block Design (RBD) method with shade mulch treatment consisting 6 levels namely without (NTM), plastic (NMP), straw (NMJ) (TNTM) , (TNMP), (TNMJ). Each was repeated three times so that there were 18 experimental units. parameters observed are ...

Journal: :E3S web of conferences 2021

The absence of an increase in the interest young population to enter agricultural sector has impact on amount food production each year. This happens because people think that farming profession is not promising for survival. One developments can attract by utilizing technology such as smart farming. paper proposes initial modeling before implementing analyzing characteristics object be planted...

ژورنال: مرتع 2022
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Abstract Background and objectives: Prediction of species richness and diversity patterns are used to develop conservation strategies for biodiversity under regional and global environmental changes. Since modeling the distribution of plant species can provide useful and important information about identifying and introducing potential habitats of plant species, and also few studies have been ...

2015
K. F. Gimbel K. Felsmann M. Baudis H. Puhlmann A. Gessler H. Bruelheide Z. Kayler R. H. Ellerbrock A. Ulrich E. Welk M. Weiler

Precipitation patterns across Central Europe are expected to change over the 21st century due to climate change. This may reduce water availability during the plantgrowing season and hence affect the performance and vitality of forest ecosystems. We established a novel rainfall reduction experiment on nine sites in Germany to investigate drought effects on soil–forest–understory ecosystems. A r...

2002
S. Jacquemoud J. F. Hanocq

SOILSPECT is a radiative transfer model, derived from Hapke's model, that represents the optical properties of soil from 450 nm to 2450 nm. The spectral and bidirectional reflectance of 26 soils was measured in the laboratory both with a field spectroradiometer (1000 narrow wavebands from 450 nm to 2450 nm) and a radiometer simulating TM channels (the five TM2, TM3, TM4, TM5, and TM7 broad band...

2002
J. Putkonen R. S. Sletten B. Hallet

An extensive ice body is buried under less than 20 cm to several meters of debris in Beacon Valley (Dry Valleys, Antarctica). The thermal behavior of the upper 20 m of permafrost, including the annually freezing and thawing surface (active layer) in this region of low relative humidity and very low annual precipitation, has great scientific interest. Distinctly different behavior from wet, arct...

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