Depressed fodder quality and increased oestrogenic activity of lucerne infected with Pseudopeziza medicaginis

1980 ◽  
Vol 31 (6) ◽  
pp. 1103 ◽  
Author(s):  
WC Morgan ◽  
DG Parbery

As well as reducing dry matter production of lucerne, infection of 15 % of the leaf area by Pseucbpeziza medicaginis reduced digestibility by 14% and crude protein content by 16%. Infection caused oestrogenic activity in green lucerne.

1989 ◽  
Vol 113 (2) ◽  
pp. 249-253 ◽  
Author(s):  
D. N. Droushiotis

SUMMARYTwo small-grained cereals, Mulga oats and a triticale line, and two legumes, local vetch and local peas, were grown in pure stands and in mixtures at various cereal: legume seed ratios (20:80, 40:60, 60:40 and 80:20) for three successive cropping years, 1981/82 to 1983/84, at Laxia and Dromolaxia, Cyprus, in each year.The cereal pure stands produced, on average, more dry matter, 8·40 t/ha, and more digestible organic matter, 4·12 t/ha, than the legume pure stands, 3·68 and 2·18 t/ha, respectively. On average, total dry matter production decreased linearly as the seed proportion of the legume component in the mixture increased. The proportion of the legume in the harvested material was much lower than expected from the seed ratios. The highest proportion of legume was seen in the mixtures of peas with triticale and ranged from 8·1 to 35·5% at the various sowing rates. Digestibility and crude protein content were highest in the mixtures of triticale and peas.


2019 ◽  
Vol 48 (6) ◽  
pp. 37-42
Author(s):  
A. V. Goncharova

The results of research into the creation of a new cultivar of spring common vetch Obskaya 16 are presented. The work was carried out in the period 2014-2017. The goal was set to create a new earlyripening variety with а high fodder and seed productivity, high protein content, and an even ripening of seeds. The vetch cultivar Obskaya 16 was created by the method of hybridization on the basis of genetically different and ecologically-distant genotypes with subsequent multiple selection according to the specified parameters from the Kamalinskaya 611 × Novosibirskskaya hybrid populations. The vetch cultivar Obskaya 16 combines early ripeness with high fodder and seed productivity. The length of the growing season of the new cultivar is, on average, 81 days, which allows for the production of certified seeds annually. During all the years of testing in breeding nurseries, the new cultivar surpassed the standard Kamalinskaya 611 in green mass by 41%, in dry matter by 40%, and in grain by 27%. This cultivar is of mowing type, its average seed yield is 2.43 t/ha, green mass 28 t/ha, dry matter – 5.82 t/ha. The main economic and valuable characteristics of the Obskaya 16 cultivar are as follows: the height of the stem is 85-120 cm, the number of internodes is 19-25, the height of attachment of the lower seed pods is 78 cm. The average number of seed pods per plant is 24, the maximum is 46, the average number of seeds per a seed pod is 7-8. The mass of 1000 seeds is 72.6 g. The colour of the seed coat is mainly black velvet (92%) and brown (8%). Crude protein content is 25.3–30.5%. In 2016 the cultivar of spring common vetch was passed to the state variety testing under the name Obskaya 16. The newly created cultivar surpasses the previously recognized varieties in the region by early ripeness, fodder and seed productivity, as well as high fodder quality.


2011 ◽  
Vol 51 (No. 3) ◽  
pp. 144-150 ◽  
Author(s):  
M. Příkopa ◽  
R. Richter ◽  
J. Zimolka ◽  
R. Cerkal

In the years 2001–2003 in field trials we studied the effects of the conditions of year, fore-crops (winter wheat, sugarbeet, grain maize) and optimalization of the nutritional status on the yield and crude protein content in the grain of spring barley. From the analysis of the plants we can see that dry matter production and nutrient concentration in the plants were influenced by the conditions of the year and the fore-crop. After sugar beet, the growth of the dry matter was intensive and the concentrations of nutrients per one plant were higher as early as in the initial stages of vegetation. The yields in the years 2001 and 2002 corresponded with these results while the highest yields were seen after the sugar beet. Due to the extreme lack of precipitation, the best fore-crop in 2003 was maize. While the dose of 50 kg N/ha increased the yields after maize, after wheat it reduced the yields and increased the crude protein content in the grain.


2010 ◽  
Vol 39 (8) ◽  
pp. 1666-1675 ◽  
Author(s):  
Marcio Mahmoud Megda ◽  
Francisco Antonio Monteiro

The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part dry mass positively correlated with the number of tillers and leaves and grass leaf area. Nitrogen rates modulated the root system development, and the root specific length and surface decreased when high rates of nitrogen and potassium were supllied. Nitrogen and potassium influence Marandu palisadegrass morphogenic characteristics, which are determinant for grass dry matter production.


2018 ◽  
Vol 34 (3) ◽  
pp. 345-353 ◽  
Author(s):  
Violeta Mandic ◽  
Zorica Bijelic ◽  
Vesna Krnjaja ◽  
Aleksandar Simic ◽  
Maja Petricevic ◽  
...  

Maize is the very important silage source in the world. Timely harvesting ensure high maize forage yield and quality. Therefore, the study focused on the effects of four harvesting times (starting at the 12 August every 7 days) on yield and qualitative parameters of forage green mass of maize hybrid ZP 677. The experiment was set in Vojvodina Province, Serbia, during the 2013 and 2014 growing seasons. Plant height, stem diameter, number of leaves per plant, ear percentage, forage yield, dry matter content and crude protein content were higher, while stem percentage was lower in 2014 with favorable climatic condition. Forage yield, crude protein content, ADF and NDF decreased, while dry matter content significantly increased with delay in harvesting. The maize hybrid should be harvested when the milk line is three-quarter of the way down the grain that is in the third decade of August.


2008 ◽  
Vol 19 (3) ◽  
pp. 252 ◽  
Author(s):  
O. NISSINEN ◽  
P. KALLIAINEN ◽  
L. JAUHIAINEN

The development of the yield and nutritive value of timothy (Phleum pratense L.) both in the primary growth and in the regrowth were studied at MTT Plant Production Research, a unit of MTT Agrifood Research Finland, in Rovaniemi (66°35´N) in 1999–2001. The dry matter yield and leaf:stem ratio were measured from the crop samples, and the contents of crude protein and organic matter digestibility of both whole plant samples and leaf and stem fractions were analysed. In primary growth, the most rapid increase of dry matter, 220–240 kg ha-1 per day, was measured around the beginning of the heading stage. There was a very strong positive correlation between the proportion of stems and the amount of dry matter in the primary yield. The daily growth rate of the regrowth was less than half of that of the primary growth. The fastest decrease, 1 percentage unit per day, in crude protein content was measured at the pasture stage (4–5-leaf stage). During the entire sampling period, the average daily decline in crude protein content in the primary growth of timothy was 0.65 percentage units. The main cause for the rapid decline in crude protein content was the high proportion of stem matter and its low protein content. In the regrowth, during the last four weeks before the harvest, the average daily decline in crude protein content was 0.28 percentage units.The average decline in organic matter digestibility from early pasture stage to late silage stage was 0.9 percentage units per day. The most remarkable change was noticed at the growth stage of timothy when about the half of stems were heading and it was then that the digestibility decreased by more than one percentage unit per day. The rapid decline in organic matter digestibility was due to the low digestibility of stem matter. The daily change in forage digestibility in the regrowth was very small, on average 0.11%.;


2013 ◽  
Vol 59 (4) ◽  
pp. 167-177
Author(s):  
Miriam Kizeková ◽  
Ján Tomaškin ◽  
Jozef Čunderlík ◽  
Ľubica Jančová ◽  
Janka Martincová

Abstract This study highlights the effect of drought and ambient temperature on performance and herbage quality of legume monocultures and grass-legume mixtures. In a field experiment, the total dry matter yield, seasonal pattern of dry matter yield distribution, content of crude protein and crude fibre of monocultures of red clover and alfalfa and grass-legume mixtures were investigated during two consecutive dry years (2011-2012). Alfalfa cultivars Kamila and Tereza grown as monocultures or as mixtures with Festulolium braunii (cultivar Achilles) outperformed the red clover cultivars Fresko and Veles and provided a well-balanced total and seasonal dry matter yield during both years. Across all experimental years, crude protein content was significantly higher at alfalfa monocultures and mixture when compared with clover monocultures (P < 0.05). However, considerable lower content of crude fibre at clover monocultures in comparison with alfalfa ones was found. Responses of nutritive parameters of both legume species to weather variables were different. Crude protein content in red clover was independent of rainfall and temperature. In contrast, the crude fibre content correlated with temperature whereby the alfalfa monocultures showed stronger correlations (P < 0.05) than red clover monocultures.


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