A field experiment was conducted at Rice Research Station, Tonekabon, Iran, to determine the effect of N rate on seed yield, protein and oil content of two canola (Brassica napus L.) cultivars. Two ...canola cultivars ('Hayola-308' and 'RGS- 003') and five N rates (0, 50, 100, 150, and 200 kg ha-1), organized into a randomized complete block design with a factorial treatment arrangement and three blocks, were applied to plot areas. Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content. On the other hand, cultivar had only significant (P < 0.01) effect on seed protein and oil content. Moreover, the interaction between N rate and cultivar was significant at P < 0.01 for seed, protein and oil yield, illustrating that cultivars showed different responses to N rates for these traits. In general, the quadratic equation provided a good description of the relationship between seed, protein and oil yield and nitrogen rate. For 'Hayola-308', seed, protein and oil yield increased significantly as N application rate increased from 0 to 150 kg ha-1, but thereafter remained constant. In contrast, for 'RGS-003', seed, protein and oil yield increased significantly as N application rate increased from 0 to 200 kg ha-1. Therefore, at the highest N application rate (200 kg ha-1), 'RGS-003' produced greater seed, protein and oil yield than 'Hayola-308'. Averaged across N application rate, the seed protein content of RGS-003 was significantly (P < 0.01) higher than that of 'Hayola-308', while the opposite result was observed for seed oil content. This study demonstrated the differential response of two canola cultivars to N rate in terms of seed, protein and oil yield.
At the experimental field of Slovenian Institute of Hop Research and Brewing at Žalec an experiment was conducted in 2006/07 to detect the impact of fertilization by K2SO4 and gypsum on the yield, ...oil content, oil yield, protein content, protein yield and fatty acids composition at two different cultivars of oilseed rape (cultivar Smart and hybrid Toccata). In the conditions of the experiment the source of sulphur did not impact the yield, but a negative impact of spring fertilization by sulphur at cultivar Smart was detected. At hybrid Toccata positive impact of gypsum was detected when it was fertilized at sowing. Oil content was higher at cultivar Smart by 3.32% compared to hybrid Toccata. At cultivar Smart no source of sulphur impacted significantly the yield of oil, while at the conditions of the experiment positive impact of spring applications of sulphur on the yield of oil was detected at hybrid Toccata. Oil yield was higher at cultivar Smart compared to hybrid Toccata. Protein content was not impacted by sulphur fertilization. The share of linoleic acid was higher at hybrid Toccata by 2.2% to 2.4%, the share of oleic acid was higher at cultivar Smart by 2.2% to 3.1%, the shares of other investigated acids did not differ a lot between Smart and Toccata.
Na poskusnem polju Inštituta za hmeljarstvo in pivovarstvo Slovenije v Žalcu smo v sezoni 2006/07 zastavili poskus, v katerem smo preizkusili vpliv gnojenja s K2SO4 in sadro na pridelek, vsebnost olja, pridelek olja, vsebnost beljakovin, pridelek beljakovin in sestavo maščobnih kislin dveh kultivarjev (kultivar Smart in hibrid Toccata) oljne ogrščice. V danih razmerah različne oblike gnojenja z žveplom niso imele značilnega vpliva na pridelek, vendar se pri kultivarju Smart nakazuje negativen učinek spomladanskega gnojenja z gnojili, ki vsebujejo žveplo, pri hibridu Toccata pa pozitiven učinek gnojenja s sadro, če je bila pognojena ob setvi. Vsebnost olja je bila pri kultivarju Smart za 3,32% višja kot pri hibridu Toccata. Pri kultivarju Smart nobena oblika gnojenja z žveplom ni pomembno vplivala na hektarski pridelek olja, pri hibridu Toccata pa se v danih razmerah nakazuje pozitiven učinek spomladanskega gnojenja z žveplom na pridelek olja. Hektarski pridelek olja je pomembno večji pri kultivarju Smart kot pri hibridu Toccata. Na vsebnost beljakovin gnojenje z žveplom ni imelo vpliva. Delež linolne kisline v olju je bil pri hibridu Toccata višji za 2,2% do 2,4%, delež oleinske kisline je bil višji pri kultivarju Smart za 2,2 do 3,1%, deleži drugih maščobnih kislin se pri obeh kultivarjih medsebojno le malo razlikujejo.
Vpliv načinov gospodarjenja s travišči na ptice gnezdilke Ljubljanskega barja (osrednja Slovenija)
In spite of the extensive drainage works carried out in the bogs of Ljubljansko barje, the area is ...still important for breeding birds, particularly wet meadow species. Existence of these meadows nowadays depends very much on human management, which can be more or less intensive. Lately, more and more wet meadows are being transformed into pastures. The aim of this research was to find out how different grassland management regimes affect breeding birds at Ljubljansko barje. Intensively managed meadows, extensively managed meadows, pastures and litter meadows were compared. As birds were counted by a method adapted to pastures, counts were made from the edge of the plots. From the end of April till mid June 2003, every plot was visited four times in the morning and once during the night. Management intensity of the plot was determined by the beginning and extent of the area being mown or grazed, speed of mowing progress, number of irrigation ditches and proportion of area fertilized. The largest numbers of breeding birds were recorded in litter meadows, slightly fewer in extensively managed meadows and the least in intensively managed meadows. Considering the numbers of breeding birds, pastures were more similar to intensively than to extensively managed meadows. The beginning of mowing, extent of area mown and proportion of fertilised area were in significant negative correlation with density of nesting birds. It turned out that grazing, as practiced in the year of the research, is not suitable for maintaining wet meadows as habitats for grassland birds. The question remains, however, would less intensive grazing be a suitable alternative solution for maintaining conservationally very important wet grasslands at Ljubljansko barje, which would otherwise be abandoned.
U članku se daje pregled dosadašnjeg iskustva utvrđivanja, biljno hranidbenog kapaciteta tla u maslinicima metodom folijarne dijagnoze.
Izneseni su podaci o učinku različitih načina gnojidbe bez ...natapanja i uz natapanje.
The growth promoting effect of basal and foliar application of coir pith based cyanobacterial biofertilizer on Basella rubra L. was determined by analyzing the morphological and biochemical ...parameters of the control and test plants after treatment. Compared to control plants test plants showed better height, stem circumference, number of branches, number of leaves and number of flowers. Biochemical analysis of test and control plants also revealed similar increase of parameters in test sample. Thus, from our study we recommend cyanobacteria be considered as a serious contender in the field of biofertilizer.
Gljivice iz roda Fusarium uzrokuju fuzarijsku palež klasa, bolest žitarica koja uništava urod i kakvoću zrna. Osim toga, ove gljivice proizvode mikotoksine koji mogu ozbiljno ugroziti zdravlje ljudi ...i životinja. Istražili smo djelovanje NPK gnojiva, organskoga stimulatora rasta Nano-Gro® te lisne primjene Cu, Zn i Mn, zasebno ili u kombinaciji, na učestalost fuzarijske paleži klasa u zimskoj raži (kultivar Dańkowskie Diament) na temelju mikološke analize zrnja i koncentracije fuzarijskih mikotoksina u njima. Na intenzitet bolesti zrnja koju uzrokuje sedam vrsta Fusarium gljivica ponajviše su utjecale vremenske prilike u analiziranim razdobljima. Primijenjena gnojiva i organski stimulator rasta Nano-Gro® iskazali su različite učinke na razvoj fuzarijske paleži klasa i biosintezu fuzarijskih mikotoksina (deoksinivalenola, nivalenola, zearalenona i fumonizina) u zrnju. U 2013. najveći je pad zabilježen u razinama deoksinivalenola i nivalenola, dok su razine moniliformina bile niže u tretiranim nego u netretiranim uzorcima (apsolutna kontrola) u obje godine istraživanja. Intenzitet fuzarijske paleži klasa korelirao je s koncentracijama zearalenona, deoksinivalenola, nivalenola i moniliformina u uzorcima zrnja. Do izrazitijeg nakupljanja ergosterola došlo je u raži iz žetve 2013. u odnosu na 2012. godinu, a tretman gnojivom dodatno je povisio razine ergosterola u odnosu na kontrolu.
Mala škola povrtlarstva Kantoci, Darko
Glasnik Zaštite Bilja,
02/2010, Volume:
33, Issue:
1
Journal Article
Open access
Uzgoj povrća važna je poljoprivredna grana jer povrće se konzumira svakodnevno tijekom cijele godine. Kako bi što bolje uzgajali povrće potrebno je poznavati agrotehničke mjere, plodored, način ...obrade tla, gnojenje, navodnjavanje, sjetvu i sadnju.
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