scholarly journals Research of Influence of Growing Technology Elements on Biometrical Indexes of Energy Willow in the Western Region

Author(s):  
N.M. Lys ◽  
N.L. Tkachuk ◽  
R.S. Ivaniuk

The current study deals with the development of scientific strategies for growing bioenergy crops in Ukraine that will assist the increasing of biomass in energy balance of Ukraine. Experimental research studies on determining the growth characteristics and development of energy willow on soddy ash gray soil according to the farming cultivation was carried out on the research fields of the Carpathian State Agricultural experimental station of the Institute of Agriculture in the Carpathian region of the NAAN and in laboratory conditions. The features of growth and development of energy willow varieties according to the growing conditions of the Western region for biofuels production was studied on the basis of quadruplex repetition. It was found that energy willow in the conditions of the Western region in terms of mineral fertilization with N40P300K300 and with the help of increasing the planting step to 60 cm influences the intensive noduling of vegetative mass. In this version the biggest height shoots (180 cm) is fixed. The increasing of seeding step from 40 cm to 60 cm in energy willow planting allows to get additionally 4,2 t/ ha of green mass and 1,9 t/ ha of dry mass. Mineral fertilization provides the increase of the productivity of 2,1 - 2,5 t/ ha of green mass and 0,5 - 1,0 t/ha of dry mass. On the basis of analyses of weeds change we can conclude that application of mechanical processing allowed to control the wild grass at possible level. However, some time after the treatments, shoots of annual and perennial weeds appeared. But the interrow tillage and bringing the herbicides provided practically full keeping down the weeds in the first half of willow vegetation

Author(s):  
H. Serediuk

At the present stage of the study of the fauna of the Neuroptera Galician National Park, there are 11 species belonging to seven genera, three families. The species Chrysopa commata Kis & Ujhelyi was marked for the western region of Ukraine for the first time as well as the species Chrysopa hungarica Klap for the pre-Carpathian region.


Author(s):  
Alex A. Lédo ◽  
Sérgio L. R. Donato ◽  
Ignacio Aspiazú ◽  
João A. da Silva ◽  
Paulo E. R. Donato ◽  
...  

ABSTRACT Cactus pear is adapted to semi-arid conditions. In this study, the objective was to evaluate the water use efficiency and green and dry mass yields of the cultivar Gigante under different fertilization rates and sources in three production cycles, spacing and planting arrangement. Seventy two treatments, involving two types of arrangements in the plots, three spacings in the subplots and 12 types of fertilization in the sub-subplots were arranged in a split-split-plot scheme, using randomized block design with three repetions. Dry mass content decreases while water use efficiency and green mass and dry mass yields increase from the first to the third cycle. It is feasible to use planting arrangements in triple or quadrupling rows which allow increasing the mechanization index of the crop. Organomineral fertilization with 30 or 60 Mg ha-1 year-1 of bovine manure combined with 150-300-600 kg ha-1 year-1 of N-P2O5-K2O and 300-300 kg ha-1 year-1 of P2O5-K2O, respectively; organic fertilization with 90 Mg ha-1 year-1 of manure; and mineral fertilization with 300-300-600 kg ha-1 year-1 of N-P2O5-K2O ensure green mass and dry mass yields greater than 200 and 15 Mg ha-1 cycle-1, respectively, and water use efficiency greater than 20 kg ha-1 mm-1 in ‘Gigante’ cactus pear. It is concluded that yields of this magnitude are ensured with application of about 300-300-300 kg ha-1 year-1 of N-P2O5-K2O using organic, organomineral or mineral sources.


Author(s):  
Abdulmalik Alghamdi ◽  
Mohammed Alzahrani ◽  
Abdulla Alhamami ◽  
Adel Altalhi ◽  
Ali Alkhathami ◽  
...  

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