نتایج جستجو برای: crop moisture index

تعداد نتایج: 494335  

2001
Saikat Paul T.Srinivas Kumar S.Sudhakar S.Adiga P.P.Nageswara Rao

Dry land farming in India accounts for 63% of the cultivated land of 144 million hectares. The crop production on these lands is dependent entirely on the natural precipitation, which is highly erratic in terms of spatial and temporal distribution during the crop-growing season. To address these problems, Government of India has accorded high priority to watershed approach for development of ra...

2017
Mert Dedeoglu

In this study, an application was carried out to determine the Volcanic Soils by using remote sensing. The study area was located on the Golcuk formation in Isparta-Turkey. The thermal bands of Landsat 7 image were used for processing. The implementation of the climate model that was based on the water index was used in ERDAS Imagine software together with pixel based image classification. Soil...

2014
Carsten Brackhage Jen-How Huang Jörg Schaller Evert J. Elzinga E. Gert Dudel

Elevated arsenic content in food crops pose a serious human health risk. Apart from rice wheat being another main food crop is possibly cultivated on contaminated sites. But for wheat uptake mechanisms are not entirely understood especially with regard to nutrient fertilization and different moisture regimes taking into account heavy rainfall events due to climate change. Here we show that espe...

2017
Derek G. Groenendyk Amy L. Kaleita Kelly R. Thorp

With the ability to monitor soil moisture in time comes the opportunity to develop ways to incorporate these measurements into predictive models, without compromising or overriding the model physics. The importance of soil moisture to the growth of crops is well understood and because of this it is recognized as one of the more important parts of crop modeling programs. This research focused on...

Drought induced stress is one of the most significant environmental challenges. This study was designed to evaluate the effects of drought stress on crop yield and antioxidant systems during the vegetative period of wheat. The study was carried out in a greenhouse using factorial experiment based on complete randomized block design (RCBD) in three replications in Razi University in Iran from 20...

2014
Jessica A. Torrion Stephan J. Maas Wenxuan Guo James P. Bordovsky Andy M. Cranmer

The application of remotely sensed estimates of canopy minus air temperature (Tc-Ta) for detecting crop water stress can be limited in semi-arid regions, because of the lack of full ground cover (GC) at water-critical crop stages. Thus, soil background may restrict water stress interpretation by thermal remote sensing. For partial GC, the combination of plant canopy temperature and surrounding ...

2013
Konstantinos Perakis Athos Agapiou Diofantos G. Hadjimitsis Apostolos Sarris Andreas Georgopoulos Dimitrios D. Alexakis

Vegetation crop marks may be formed in areas where vegetation overlays near-surface archaeological remains. These features retain soil moisture with different percentage of moisture compared to the rest of the crops of an area. Depending on the type of feature, crop vigour may be enhanced or reduced by buried archaeological features. Satellite imagery has been already applied successfully in se...

2013
Neelam Chaudhary V. Sivaram

Pollinators provide an essential ecosystem service that contributes to the maintenance of biodiversity and ensures the survival of pt species including crop pts. Furthermore, the reproductive success in pts is often pollinator limited. Most of the vegetable crops are cross-pollinated i.e. the flowers of these crops need conspecific foreign pollen for pollination and seed set. Insect pollinators...

2017
Elaine Jensen Paul Robson Kerrie Farrar Sian Thomas Jones John Clifton‐Brown Roger Payne Iain Donnison

In commercially grown Miscanthus × giganteus, despite imposing a yield penalty, postwinter harvests improve quality criteria for thermal conversion and crop sustainability through remobilization of nutrients to the underground rhizome. We examined 16 Miscanthus genotypes with different flowering and senescence times for variation in N, P, K, moisture, ash, Cl and Si contents, hypothesizing that...

2003
D. S. Wilks

The problem of analyzing a sequence of daily irrigation decisions utilizing weather forecast information is formulated for the case of lettuce grown in central New York state, and solved using a stochastic dynamic programming algorithm. The crop response is represented using a simple but physiologically-based model of lettuce growth [van Henten, E.J., 1994. Validation of a dynamic lettuce growt...

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