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Articles 52681 - 52710 of 294494
Full-Text Articles in Physical Sciences and Mathematics
Reasons For The Premature Decline In Astragalus Adsurgens Stands In Kerqin Sandy Land, Q. Zh. Sun, Z. L. Wang, J. G. Han, Y. W. Wang, G. R. Liu
Reasons For The Premature Decline In Astragalus Adsurgens Stands In Kerqin Sandy Land, Q. Zh. Sun, Z. L. Wang, J. G. Han, Y. W. Wang, G. R. Liu
IGC Proceedings (1977-2023)
Diseases partly account for reductions in Astragalus adsurgens, stand longevity. The effect of some cultural practices on the control of pests and diseases have been reported (Hou, 1986; Nan, 1996), but few reports have detailed the relationship among soil fertiliser status, diseases and premature stand decline. This study was conducted to investigate these relationships in order to extend the longevity of Astragalus adsurgens stands.
The Influence Of Fertiliser Application To Strip-Sown Grasslands On Herbage Production And Quality, A. Kohoutek, P. Komárek, V. Odstrčilová, P. Nerušil
The Influence Of Fertiliser Application To Strip-Sown Grasslands On Herbage Production And Quality, A. Kohoutek, P. Komárek, V. Odstrčilová, P. Nerušil
IGC Proceedings (1977-2023)
To increase the productivity of dairy cattle in the Czech Republic requires an improvement in herbage quality and an increase in the net energy of herbage. The decrease in cattle numbers by 50 % and the expansion of the grassland area both result in a surplus of feedstuffs of low quality. Introduction of strip-seeding of legumes and grasses into grasslands in interaction with fertilisation provides a possible solution to this problem.
Range-Based Livestock Production In Turkmenistan, R. H. Behnke, G. Davidson
Range-Based Livestock Production In Turkmenistan, R. H. Behnke, G. Davidson
IGC Proceedings (1977-2023)
Turkmenistan retains a centralized system of livestock production in which many critical assets are owned by the state. Though technically in the temperate zone, the country's climate is harsh and unstable. Groundwater resources are unevenly distributed, leaving many potential grazing areas seasonally inaccessible due to lack of drinking water for livestock. This paper summarizes the results of a three-year study of rangelands, livestock production, flock economics and land tenure at two study sites, one in central and the other in eastern Turkmenistan. The results of this study suggest that pastoral communities in Turkmenistan have coped remarkably well with the institutional …
Evaluating Accuracy Of Solar Ground Station System Data, Emad Jaleel Mahdi, Ali K. Resen, Ahmed B. Khamees, Mudar Ahmed Abdulsattar
Evaluating Accuracy Of Solar Ground Station System Data, Emad Jaleel Mahdi, Ali K. Resen, Ahmed B. Khamees, Mudar Ahmed Abdulsattar
Karbala International Journal of Modern Science
The solar radiation data is crucial for many solar applications. In this regard, this manuscript analyzed and compared the correctness of ground station data with data from the PVGIS. Empirical equations were adopted to build software. This software calculates the global, direct, diffuse, and rates of solar radiation data on two axes. The result of the analysis was employed to assess the compatibility, dependability, and confidence of these types of data. The comparison showed that vastly variations in some curves from dawn to sunset. In sum, every site exhibit variation in solar radiation station rates. These results could serve as …
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