نتایج جستجو برای: strategic crop

تعداد نتایج: 140680  

2017

This paper proposes a web-based Agro-Information System (AIS) prototype that can support farmers with agricultural-related information about a given food crop. Consistency in the application of this information can help in improving crop yield, in controlling crop pests, in crop diseases treatment, and in enhancing the overall crop productivity. A prototype AIS capable of providing possible pes...

Journal: :Current opinion in plant biology 2016
Fay Newbery Aiming Qi Bruce Dl Fitt

Combining climate change, crop growth and crop disease models to predict impacts of climate change on crop diseases can guide planning of climate change adaptation strategies to ensure future food security. This review summarises recent developments in modelling climate change impacts on crop diseases, emphasises some major challenges and highlights recent trends. The use of multi-model ensembl...

2007
Thomas F Geary

When eucalyptus trees are felled, new stems often grow from the stumps to produce another crop of trees. This new crop is called the coppice crop to distinguish it from the seedling crop. Coppice crops can be important in growing eucalypts profitably. Replanting costs are saved and coppice crop rotations are usually shorter than those of seedling crops, because coppice stems grow faster than se...

2012
Simone Graeff Johanna Link Jochen Binder Wilhelm Claupein

The current challenges crop production faces in the context of required yield increases while reducing fertilizer, water and pesticide inputs have created an increasing demand for agronomic knowledge and enhanced decision support guidelines, which are difficult to obtain on spatial scales appropriate for use in a multitude of global cropping systems. Nowadays crop models are increasingly being ...

2003
Albert Olioso Yoshio Inoue Samuel Ortega-Farias Jérome Demarty Jean-Pierre Wigneron Isabelle Braud Frédéric Jacob Patrice Lecharpentier Catherine Ottlé Jean-Christophe Calvet Nadine Brisson

Soil-Vegetation-Atmosphere Transfer models (SVAT) and Crop Simulation models describe physical and physiological processes occurring in crop canopies. Remote sensing data may be used through assimilation procedures for constraining or driving SVAT and crop models. We developed the coupling between crop, SVAT and radiative transfer models in order to implement assimilation procedures in various ...

2014
Tri Setiyono Andrew Nelson Francesco Holecz

Accurate and timely information on rice crop growth and yield helps governments and other stakeholders adapting their economic policies, enables relief organizations to better anticipate and coordinate relief efforts in the wake of a natural catastrophe, and provides technical backbone of an insurance solution where risks of yield losses from the rice smallholders are transferred to the insuran...

Journal: :Remote Sensing 2017
Qian Song Qiong Hu Qingbo Zhou Ciara Hovis Mingtao Xiang Huajun Tang Wenbin Wu

Producing accurate crop maps during the current growing season is essential for effective agricultural monitoring. Substantial efforts have been made to study regional crop distribution from year to year, but less attention is paid to the dynamics of composition and spatial extent of crops within a season. Understanding how crops are distributed at the early developing stages allows for the tim...

2007

Since relatively little is known about the effects of acid precipitation on growth and productivity of crop plants, a crop survey was initiated to study effects of H 2SO 4 rain simulants on growth, yield, and quality of selected crops which were chosen to represent diverse taxo nomic groups and crop products. Yield responses of 28 crop cultivars were examined. Plants were grown in pots in field...

2003
B.V.S. Reddy P. Sanjana Reddy F. Bidinger M. Blümmel

In the semi-arid tropics, over two-third’s of the world’s people depend on agriculture within which livestock play a major role in building rural livelihoods. Crop residues (fodder/stover) are important feed resources for ruminants. This review was undertaken with the objective of improving understanding of the role of various crop management factors in affecting the productivity and quality of...

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