نتایج جستجو برای: crop growing periods
تعداد نتایج: 371803 فیلتر نتایج به سال:
in agricultural practices, reference evapotranspiration (et0) parameters need to be specified for crop water requirement determination. although, the crop water requirement is not an easy task. numerous mathematical models and experimental methods have been developed for this purpose in the entire world. on the other hand, ten-daily and monthly average meteorological data are used in many of ir...
To improve the accuracy of winter wheat yield estimation, the Crop Environment Resource Synthesis for Wheat (CERES-Wheat) model with an assimilation strategy was performed by assimilating measured or remotely-sensed leaf area index (LAI) values. The performances of the crop model for two different assimilation methods were compared by employing particle filters (PF) and the proper orthogonal de...
This study aimed at analysing patterns of crop sequences over time throughout the German federal state of Lower Saxony from 2005 to 2012. Therefore, the IACS (Integrated Administration and Control System) data was analysed for the identification of spatial and temporal pattern of crops grown on farmer’s fields. Lower Saxony is a region where maize growing had a steep increase and, therefore, wa...
Soybean is one of the main sources of foreign exchange credits for Brazil in the agricultural sector. There is increasing interest in growing this leguminous crop, especially in the southern region of Minas Gerais, due to its importance as an alternative for crop rotation with maize. In this respect, the study of the adaptability of new cultivars to the region is indispensable so as to obtain h...
Abstract Background Periods of drought are projected to increase in intensity and frequency across many parts the world, affecting freshwater availability for agriculture limiting cropping productivity. Exploring innovative opportunities utilise novel resistant crops should be prioritized sustainably meet growing demand food fibre. The potential benefits industrial hemp ( Cannabis sativa L .) a...
The dispersion of soilborne plant pathogens could be greater in closed soilless growing systems than in open ones. The effect of three soilless growing systems (open, closed and closed with slow sand filtration) on the dispersion of Verticillium dahliae propagules and the severity of the disease in strawberry (Fragaria × ananassa Duch.) has been analysed. V. dahliae dispersion in a closed syste...
The reliability of crop-growth modelling is related to the accuracy information used describe agricultural growing phases. A proper knowledge sowing periods has a significant impact on effectiveness any analysis based modeled crop growth. In this work, an estimation maize actual for year 2019 presented, combining optical and radar from Sentinel-1 Sentinel-2. classification was conducted accordi...
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