scholarly journals The use of compressed height to estimate the yield of a differently fertilized meadow

2018 ◽  
Vol 64 (No. 2) ◽  
pp. 76-81 ◽  
Author(s):  
Cudlín Ondřej ◽  
Hakl Josef ◽  
Hejcman Michal ◽  
Cudlín Pavel
Keyword(s):  
Plant Species ◽  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Vascular Plant ◽  
Dactylis Glomerata ◽  
Urtica Dioica ◽  
Plant Species Composition ◽  
Dry Matter Yield ◽  
The Czech Republic ◽  
Dactylis Glomerata L

Monitoring of grassland dry matter yield (DMY) is important for the economy and ecosystem management, but it is a time-consuming process. Calculating the correlation between compressed height (CH) and DMY is a faster way to estimate DMY. The aim of our study was to use CH in order to predict DMY for a meadow with different fertilization management and plant species composition. Four fertilization treatments and one unfertilized control were established in a mesophilic meadow in the Czech Republic. Using a rising plate meter (RPM), CH was measured before the first and second cuts. In addition, the cover of individual vascular plant species was estimated. Significant correlations between CH and DMY were ranging from 0.41 to 0.79 for treatments without nitrogen fertilization in the first and second cuts; for treatments with nitrogen fertilization there was a significant correlation only in the second cut. According to our results, the RPM method seems to be suitable for a rough DMY estimate for meadows with coverage of about 60% grasses, 10% legumes and 30% forbs. However, considerable changes in the cover of tall forbs (e.g. Urtica dioica L.) or tall grasses (e.g. Dactylis glomerata L.) could be the main sources of DMY estimation inaccuracy.

Une régie de trois coupes chez le dactyle (Dactylis glomerata L.) en régions agricoles du Moyen-Nord de l'Est du Canada

1999 ◽  
Vol 79 (2) ◽  
pp. 231-238
Author(s):  
R. Drapeau
Keyword(s):  
Dry Matter ◽  
Dactylis Glomerata ◽  
Climatic Conditions ◽  
Dry Matter Yield ◽  
Eastern Canada ◽  
The Third ◽  
Negative Effect ◽  
Cutting Management ◽  
Dactylis Glomerata L ◽  
Heading Stage

Orchardgrass (Dactylis glomerata L.) has good winter survival in the mid-north agricultural areas of eastern Canada. There is no information on the cutting management to use after the first harvest of orchardgrass under these climatic conditions. The objective of this study was to determine the required interval between harvests following a first harvest at heading stage to optimise the productivity and maintain the persistence of orchardgrass. An interval of 35 d between harvests was sufficient to obtain annual yields of 4 to 6 tonnes of dry matter per hectare. An interval of 28 d between harvests had no negative effects on orchardgrass persistence under our climatic conditions. A second harvest taken 42 d after the first one often had a negative effect on the dry matter yield of the third harvest. Each time this occurred, we observed that the second harvest had been taken after 20 July. Heading dates varied among years. In addition to the growth stage at the first harvest, the date of occurrence of the heading stage should be considered so that the second harvest will be taken before 20 July. Consequently, if heading is delayed in spring, the interval between the first and second harvest must be reduced to take the second harvest before 20 July. Delaying the third harvest had a negative effect on the dry matter yield of the first harvest of the following production year. These results indicate that it is possible to take three harvests before September under the climatic conditions of the mid-north of eastern Canada without affecting the persistence of orchardgrass. Key words: Dactylis glomerata L., orchardgrass, cutting stage, cutting intervals, cutting management, yield

EFFECTS OF USING OATS AS A COMPANION CROP WITH ORCHARDGRASS, DACTYLIS GLOMERATA L., AND WHITE CLOVER, TRIFOLIUM REPENS L., SOWN FOR PASTURE

1962 ◽  
Vol 42 (4) ◽  
pp. 582-588 ◽  
Author(s):  
W. E. P. Davis
Keyword(s):  
Weed Control ◽  
White Clover ◽  
Dry Matter ◽  
Dactylis Glomerata ◽  
Dry Matter Yield ◽  
Trifolium Repens L ◽  
Companion Crop ◽  
Second Year ◽  
Dactylis Glomerata L ◽  
Yield Of Oats

The effect of an oat companion crop upon the establishment and subsequent pasture yield of orchardgrass and Ladino clover was studied at Agassiz, British Columbia. In the year of seeding, oats, irrespective of stage of harvest, provided a degree of weed control and reduced the dry matter yield of orchardgrass and white clover. The reduction in yield for grass and clover persisted into the second year under the silage and grain management, whereas when the oats were harvested for pasture the yields of grass and clover were equal to or greater than the yields of grass and clover grown without a companion crop. Management was more important than rate of seeding the companion crop with respect to the yield of oats, grass, and clover. The herbicide MCPA caused a reduction in dry matter yield for grass and clover in the year following application and was generally less effective for weed control than the oat companion crop.

SOD-SEEDING BIRDSFOOT TREFOIL IN ESTABLISHED ORCHARDGRASS WITH OVERALL OR BANDED HERBICIDES

1983 ◽  
Vol 63 (1) ◽  
pp. 267-276 ◽  
Author(s):  
R. L. NICHOLS ◽  
R. A. PETERS
Keyword(s):  
Dry Matter ◽  
Dactylis Glomerata ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
No Tillage ◽  
Botanical Composition ◽  
Stand Establishment ◽  
Matter Production ◽  
Herbicide Treatments ◽  
Dactylis Glomerata L

Birdsfoot trefoil (Lotus corniculatus L. ’Viking’) was seeded directly into a predominantly orchardgrass (Dactylis glomerata L.) sward following overall or banded applications of paraquat (1,1′-dimethyl-4, 4′-bipyridinium ion, as dichloride salt) or glyphosate [N-(phosphonomethyl)glycine, as isopropylamine salt] to determine the degree of sward control necessary for stand establishment without tillage. Effects of the herbicide treatments and the seeding on botanical composition and dry matter production were determined by a vertical intercept technique and by hand separations of harvests into botanical components. Trefoil establishment was proportional to the degree of sward control during the seeding year. Little trefoil was established by direct seeding without herbicides. The banded herbicide treatments were less effective than overall herbicide applications for trefoil establishment. Trefoil yield obtained following overall application of paraquat was approximately 65% of that obtained following overall glyphosate treatment.Key words: Dactylis glomerata, glyphosate, Lotus corniculatus, herbicide, no-tillage, paraquat

scholarly journals Estimation of plant productivity and nutrient extraction capacity along the length of horizontal subsurface flow constructed wetland treating swine wastewater

2018 ◽  
Vol 13 (3) ◽  
pp. 1 ◽  
Author(s):  
Renata Gaudereto Andries ◽  
Antonio Teixeira de Matos ◽  
Wallisson Da Silva Freitas
Keyword(s):  
Plant Species ◽  
Dry Matter ◽  
Cynodon Dactylon ◽  
Subsurface Flow ◽  
Plant Productivity ◽  
Swine Wastewater ◽  
Alternanthera Philoxeroides ◽  
Dry Matter Yield ◽  
Extraction Capacity ◽  
Nutrient Extraction

The plant productivity and extraction capacity of nutrients present in swine wastewater (SWW) were quantified over 60 days in three horizontal subsurface flow constructed wetlands (HSSF-CW) grown with three different plant species (Typha latifolia, Alternanthera philoxeroides and Cynodon dactylon). The results show the decay of the dry matter yield (DMY) and the nutrient extraction capacity (NEC) by the plants throughout the system, which gave rise to the equations that relate these parameters to the hydraulic retention time (HRT) for each species. When possible, general equations that are independent of the plant species were also evaluated. The best model fit for the dry matter yield and N-total, N-ammoniacal, N-nitrate and P extraction by plants as a function of HRT was the decreasing potential and for K extraction was the linear regression. The coefficients of determination of equations for the species Alternanthera philoxeroides and Cynodon dactylon were, for the most part, higher than 0.8. On the other hand, the general equations presented coefficient of determination greater than 90% in all cases.

Effects of Nitrogen Fertilization Rate, Stockpiling Initiation Date, and Harvest Date on Canopy Height and Dry Matter Yield of Autumn-Stockpiled Bermudagrass

2004 ◽  
Vol 96 (2) ◽  
pp. 538-546 ◽  
Author(s):  
D. A. Scarbrough ◽  
W. K. Coblentz ◽  
K. P. Coffey ◽  
K. F. Harrison ◽  
T. F. Smith ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Fertilization Rate ◽  
Canopy Height ◽  
Harvest Date ◽  
Dry Matter Yield

scholarly journals Fodder Beet (Beta Vulgaris Var Crassa) Yield and Quality Attributrs As Affected By Nitrogen Fertilization and Foliar Boron Application

2020 ◽  
pp. 1-6
Author(s):  
Entessar Al-Jbawi ◽  
◽  
Faddi Abbas ◽  
Keyword(s):  
Nitrogen Fertilization ◽  
Yield Components ◽  
Dry Matter ◽  
Foliar Application ◽  
Dry Matter Yield ◽  
Root Yield ◽  
Fodder Beet ◽  
Fertilization Rates ◽  
Yield And Quality ◽  
Scientific Agriculture

A field experiment was conducted during two seasons 2018/2019 and 2019/2020 at Homs Agriculture Research Center, General Commission for Scientific Agriculture Researches (GCSAR), Syria, to study the effect of nitrogen fertilization rates and foliar application of boron on root yield and quality and dry matter yield of fodder beet. Results showed that the effect of nitrogen fertilization was significant (p≤0.001) for all studied traits except brix%. The effects were significant positive on root, shoot and biological yields, sucrose percentage, root, shoot and total dry matter yields. On the other hand the effect of boron spraying was presented for each season separately, because the differences of boron treatments were significant for all parameters except brix% at each season, and HI at the two seasons, while the differences of years were significant for all parameters except for HI. the highest yield and yield components were achieved by adding 300 kg N/ha with the addition of boron under Homs governorate conditions.

EFFET DE L’APPLICATION D’AZOTE ET DU STADE DE CROISSANCE A LA RECOLTE SUR LA PERFORMANCE DE LA FLEOLE DES PRES (PHLEUM PRATENSE)

1977 ◽  
Vol 57 (3) ◽  
pp. 955-962 ◽  
Author(s):  
J. C. ST-PIERRE ◽  
G. PELLETIER
Keyword(s):  
Protein Content ◽  
Nitrogen Fertilization ◽  
Crude Protein ◽  
Dry Matter ◽  
Phleum Pratense ◽  
Dry Matter Yield ◽  
Stages Of Growth ◽  
Dry Matter Digestibility ◽  
Set Up ◽  
Phleum Pratense L

An experiment was set up to determine the effect of time and rate of nitrogen fertilization and stage of growth at first cut on yield and digestibility of dry matter and protein content of two timothy (Phleum pratense L.) cultivars, at each of two cuts, No difference in yield or chemical composition was found between cultivars. Highest yields and crude protein contents were measured at rates of nitrogen fertilizer of 112 and 224 kg/ha. Higher yield and protein content were obtained with NH4NO3 applied totally or in split applications in the spring than with urea in the fall. Dry matter digestibility (DDM) was not affected by nitrogen at rates of 56, 112 and 224 kg/ha. First cut was taken at two different stages of growth, and the second cut was taken on the same day in all the plots. At anthesis, yields were higher than at the head stage but DDM and protein content were lower. The opposite was found at the second cut. Except in 1973, total dry matter yield was not affected by the stage of growth at first cut.

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