Tillage and weed management effects on forage production in a barley-red clover rotation

2001 ◽  
Vol 81 (3) ◽  
pp. 405-412 ◽  
Author(s):  
Anne Légère ◽  
F. Craig Stevenson ◽  
Nathalie Samson

Tillage and weed management practices used during the establishment year can likely affect for age yield during the subsequent production year(s). This study was conducted as part of a long-term experiment to determine the suitability of conservation tillage practices for red clover (Trifolium pratense L.) production on a Kamouraska clay from 1988 to 1995. Red clover was underseeded with spring barley (Hordeum vulgare L.) in cropping systems including different tillage (MP: fall moldboard plow; CP: fall chisel plow; NT: no-till) and weed management (intensive, moderate, minimum) treatments applied during the establishment year. Red clover dry matter yields and weed biomass were measured twice in the subsequent forage production year. Tillage had no effect on red clover yields in 3 out of 7 yr. Yields were 16% greater with NT in 1 yr and 52% with MP tillage in 3 yr compared with other tillage treatments. Weed response to tillage was consistent over years. Dicot weed biomass increased as tillage intensity was reduced. Monocot biomass was much less with NT than with MP or CP treatments. Red clover yield was 11% greater with intensive weed management, but this yield increase was not associated with differences in dicot or monocot biomass during the forage production year. Red clover yield gain with intensive weed management would need to be weighed against economical and environmental costs to determine the relevance of increased herbicide use in a short-term cereal/forage rotation. Key words: Red clover (Trifolium pratense L.), conservation tillage, no-till, forage legume

2003 ◽  
Vol 60 (3) ◽  
pp. 447-452 ◽  
Author(s):  
Daniel Portella Montardo ◽  
Miguel Dall'Agnol ◽  
Nilton Rodrigues Paim

Red clover (Trifolium pratense L.) is one of the most important temperate legume species, used to lessen the lack of forage during the critical fall-winter period in Rio Grande do Sul, RS, Brazil. However, its utilization has been restricted mainly because of its lack of persistence. This work evaluates the dry matter yield and persistence of red clover half-sib progenies in two physiographic regions of RS: "Depressão Central", in Eldorado do Sul and "Encosta Superior do Nordeste", in Veranópolis. Experiments were carried out for two growing seasons and results were compared to two red clover commercial checks, Qüiñequeli and Estanzuela 116. The region of Veranópolis was more adequate for red clover forage production, enabling better yield and persistence. The best check for both locations was cultivar Estanzuela 116. At Eldorado do Sul persistence was highly affected and some progenies were superior to the best check. At Veranópolis the best check was very productive, with good persistence. The best progenies at both locations were selected to be propagated and submitted to additional recurrent selection cycles.


2018 ◽  
Vol 101 ◽  
pp. 193-199
Author(s):  
Rodrigo Zarza ◽  
Mónica Rebuffo ◽  
Alejandro La Manna ◽  
Mónica Balzarini

2013 ◽  
Vol 48 (2) ◽  
pp. 5-16
Author(s):  
Tadeusz Zając ◽  
Józef Bieniek ◽  
Robert Witkowicz ◽  
Wojciech Jagusik

In experiments located in Prusy (Kraków voivodship) at Wierzbica (Katowice voivodship) at the end of vegetative growth in the fall 6 empiricaly determined features characterizing young red clever plants grown in pure stand and undersown in spring barley were analysed. These were following features refering to a single plant: fresh and dry weight, the length of tops and roots, diameter of the root crown and number of shoots. Based on these features 4 indirect indicators were constructed. In 1993-1994 total of 420 plants were analysed. For direct and indirect indicators means and standard deviations were callculated taking into account the influence of given year, location and method of sowing. Least squares and phenotypic correlations between investigated features were also evaluated. In 1994 average values for analysed plant features of red clever were higher than in 1993. The effect of location (of the experiment) was not visible. Better plants were formed when red clever was undersown in spring barley than when grown in pure stand (without the cover crop). Alls features measured directly showed very high variability between these features were observed. Correlation between the fresh and dry weight need to be emphasized. Also interactions between years and method of sowing, and between location and method of sowing turned out to be significant.


2020 ◽  
Vol 100 (5) ◽  
pp. 560-567
Author(s):  
Cameron M. Ogilvie ◽  
Cora Loucks ◽  
Heather Beach ◽  
Peter Johnson ◽  
Ralph C. Martin

Interseeding red clover (RC; Trifolium pratense L.) to winter wheat (WW; Triticum aestivum L.) is a recommended management practice for wheat growers in Ontario, as it is known to provide a host of services including a significant nitrogen credit for the subsequent crop. However, fewer Ontario wheat acres are being interseeded with RC because of challenges with nonuniform stands. A survey was developed to explore why growers use the winter wheat – red clover (WWrc) system and to evaluate the management practices being used. We received 179 responses, 142 which were from growers currently practicing WWrc and the rest were from growers who had used WWrc in the past. Of those who were currently practicing WWrc, increasing degrees of tillage, wider WW row spacing, and higher RC seeding rates showed some indication of improved RC stand uniformity, and qualitative feedback from growers in the survey supports this. It is recommended that these management practices receive formal evaluation to increase the success of the WWrc system in Ontario.


1998 ◽  
Vol 78 (1) ◽  
pp. 175-177 ◽  
Author(s):  
C. J. Swanton ◽  
K. Chandler ◽  
A. Shrestha

Evaluation of several herbicides for the control of alfalfa and red clover in a legume-corn no-till system showed that spring burn-down of the legumes may be preferred to fall burn-down. Spring application gave similar or greater control of these species than fall applications. Treatments with dicamba (3,6-dichloro-2-methoxybenzoic acid) at 0.6 kg ha−1 were the most effective in controlling red clover and alfalfa. Key words: Weed control, perennial legumes, spring application, fall application


Crop Science ◽  
1965 ◽  
Vol 5 (5) ◽  
pp. 425-428 ◽  
Author(s):  
R. J. Bula ◽  
R. G. May ◽  
C. S. Garrison ◽  
C. M. Rincker ◽  
J. G. Dean

2009 ◽  
Vol 4 (6) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Aldo Tava ◽  
Daniele Ramella ◽  
Maris Grecchi ◽  
Paolo Aceto ◽  
Renato Paoletti ◽  
...  

The composition of the volatile fraction of two important forage legumes from Italian sub-alpine N.E. pastureland, namely Trifolium pratense L. subsp. pratense (red clover) and T. repens subsp. repens (white clover) were investigated. The volatile oil was obtained from the fresh aerial parts by steam distillation and analyzed by GC/FID and GC/MS. The oil yield was 0.018 and 0.021% (weight/fresh weight basis) for T. pratense and T. repens, respectively. Several classes of compounds were found in both the oils, including alcohols, aldehydes, ketones, terpenes, esters, hydrocarbons, phenolics and acids. Qualitative and quantitative differences were found.


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