scholarly journals Effect of intercropping wheat with forage legumes on wheat production and ground cover

2001 ◽  
Vol 36 (3) ◽  
pp. 465-471 ◽  
Author(s):  
Gilberto Omar Tomm ◽  
Robert Kerry Foster

The use of winter legumes in southern Brazil is hindered by the slow growth of these species during establishment exposing soil surface to erosion. Introduction of these species along with spring wheat (Triticum aestivum L.) was studied as a means of increasing ground cover during their initial establishment period, without reducing wheat grain yield. Two experiments were conducted in nearby areas, one in each year. Birdsfoot trefoil (Lotus corniculatus L.), red clover (Trifolium pratense L.) cultivar Quiñequelli, white clover (T. repens L.), and arrowleaf clover (T. vesiculosum Savi) did not reduce cereal yield in either year. Wheat yield was reduced by intercropped red clover cultivar Kenland and by subclover (T. subterraneum L.) in the first year. No grain yield differences due to intercropping with any legume were detected in the second year, when rainfall was below normal. Intercropping with wheat showed to be a practical alternative to enhance ground cover at establishing forage legumes.

Author(s):  
Gabriela Maria VICAȘ ◽  
Mircea SAVATTI

Establishing the effect of the amino acids as additional additives to the culture medium is and will be in the future one of our concerns of interest for the in vitro culture of some plants. The present study examines the effect of the glicocol added to the LS basal medium over the embryos of the Trifolium pratense L specie cultivated in vitro. There were followed: the percentage of plant regeneration of the red clover, its multiplication capacity and the formation of the root system, and also the evolution of the callus obtained on mediums with 2,4D, BA and amino acid.


2001 ◽  
Vol 81 (1) ◽  
pp. 93-102 ◽  
Author(s):  
M J Garand ◽  
R R Simard ◽  
A F MacKenzie ◽  
C. Hamel

Although there is a potential to substantially reduce N fertiliser inputs by cropping spring cereals with an interseeded legume, the agronomic value and the nitrate catch-crop effect associated with this practice are not documented under the conditions of eastern Canada. This 3-yr study estimated N credits and non-N nutritional effects for interseeded clover (Trifolium pratense L. 'Arlington') in spring wheat production (Triticum aestivum L. 'Algot') and assessed fall and spring nitrate (NO3−) in soil. The soil is a St. Urbain clay (Orthic Gleysol) located in the St. Lawrence lowlands. Ammonium nitrate (NH4NO3) was applied at 0, 40, 80, 120 and 160 kg N ha-1 with or without red clover as a companion crop. Clover was incorporated as a green manure crop in mid-November. Clover significantly (P = 0.05) influenced wheat yield response to N fertilisation for 2 of the 3 yr. Clover did not reduce wheat grain yield through competition between the two plant species. Higher wheat yields with clover were attributed to N supplied by clover through mineralisation of residues incorporated in the soil the previous fall. Nitrogen fertiliser replacement value of clover was approximately 80 kg N ha-1 for 1994 and 1995. Clover occasionally increased NO3−-N measured in the soil profile in late fall and in spring. Interseeded red clover may provide most of the N needs of a companion spring wheat crop in fine-textured gleysolic soils, but is an inefficient N catch-crop. Key words: N credits, non-N nutritional effect, N catch-crop


Weed Science ◽  
1985 ◽  
Vol 33 (3) ◽  
pp. 376-380 ◽  
Author(s):  
Craig G. Davidson ◽  
Donald L. Wyse ◽  
Robert L. McGraw

Sethoxydim {2-[1-(ethoxyimino)butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one} and RO-13-8895 {acetone-O-[d-2-[p-[(α,α,α-trifluoro-p-tolyl)-oxy]phenoxy]propionyl]oxime} were evaluated for quackgrass [Agropyron repens (L.) Beauv. ♯ AGRRE] control in ‘Norcen’ birdsfoot trefoil [Lotus corniculatus (L.)], ‘Monarch’ cicer milkvetch [Astragalus cicer (L.) Hook.], and ‘Arlington’ red clover [Trifolium pratense (L.)]. None of the herbicide treatments applied to weed-free legumes 3, 15, and 30 cm tall reduced crop ground cover or seed yield. Postemergence treatments of sethoxydim and RO-13-8895 applied to quackgrass in the one- to four-leaf stage, at rates from 0.56 to 1.1 kg ai/ha, gave control of 57 to 91% in September of the seedling year. Legumes in all postemergence herbicide-treated plots produced more seed than legumes in untreated plots, regardless of time of application. Sequential applications of sethoxydim, RO-13-8895, or fluazifop {(±)-2-[4-[[5-(trifluoromethyl)-2-pyridinyl]oxy]phenoxy]propanoic acid} at 0.14 plus 0.14 kg ai/ha gave more effective quackgrass control and greater legume ground cover than single applications at 0.28 kg ai/ha.


Agriculture ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 153
Author(s):  
Angelique Twizerimana ◽  
Etienne Niyigaba ◽  
Innocent Mugenzi ◽  
Wansim Aboubakar Ngnadong ◽  
Chuan Li ◽  
...  

Wheat (Triticum aestivum L.) is one of the main staple foods worldwide. Wide precise sowing (Wps) is a sowing method believed to produce the highest winter wheat grain yields; however, the reasons for its high yields and its effect on quality traits have not been effectively studied. Hence, a two-year field experiment was conducted to evaluate the effect of three sowing methods, dibbling (Db), drilling (Dr), and Wps and seed rates (112.5 kg ha−1, 150 kg ha−1, 187.5 kg ha−1, and 225 kg ha−1) on grain yield and the quality of winter wheat. Wps, Dr, and Db produced statistically similar results in terms of the grain yield and most of the quality traits measured. The grain yield increased significantly with the increasing rate, the highest being 7488.89 kg ha−1 at a seed rate of 225 kg ha−1. The total protein, albumin, and globulin were not affected by the sowing methods, but prolamin and glutelin were affected by the Dr and Wps, respectively. The total starch in both years, and the amylose and amylopectin in the first year, were affected only by the seed rates, with 60.11%, 23.2%, 38.63%, or higher values. The results indicated that for the wheat yield and quality traits, Wps, Dr and Db can mostly be used interchangeably. For the protein, starch, and grain yield, the suitable seed rates were 112.5 kg ha−1, 150 kg ha−1, and 225 kg ha−1, respectively.


Author(s):  
Borislav Petkovic ◽  
Novo Przulj ◽  
Vojo Radic ◽  
Milan Mirosavljevic

Red clover (Trifolium pratense L.) is one of the most important forage legumes in areas with acidic and nutrient poorer soils where alfalfa fails to growth. In 2010-2011 years period we studied four advanced lines and four commercial varieties of red clover, which are widely used in the production in Bosnia and Herzegovina. Our results showed that the variation in grain yield, thousand kernel weight and germination energy was under control of growth. Across genotypes seed yield in 2010 and 2011 was 205 and 223 kg ha-1, respectively. The highest yield of seed was obtained from second growth in the second year. Extreme precipitation during anthesis and grain filling and ripening in 2010 negatively affected red clover seed production. Advanced line DS-2 had the highest grain yield (234 kg ha-1) and thousand kernel weight (1.75 g). Low seeds yields of the tested genotypes are questioning the cost-effectiveness of red clover seed production at this site.


1992 ◽  
Vol 72 (4) ◽  
pp. 1207-1213 ◽  
Author(s):  
B. R. Christie ◽  
E. Ann Clark ◽  
R. S. Fulkerson

Cultivars and common seedlots of double- and single-cut red clover (Trifolium pratense L.) were direct seeded at the Elora Research Station in 1982 and 1983, fall plowed, and followed by 3 yr of corn (Zea mays L.) harvested for grain yield. The 1982 and 1983 sites differed in background soil N status. Common seedlots produced subsequent corn yields equal to those following certified cultivars, indicating no advantage to the use of certified seed for plowdown purposes. Although double-cut strains produced more aboveground biomass, both in midseason and at plowdown, single-cut strains produced more fall root biomass (1 yr only) and a higher percent root N, but in the end, corn yield did not differ between double- and single-cut strains. The ranges of performance of double- and single-cut strains did not overlap for aboveground biomass, but overlapped substantially for both root and percent shoot N and for root biomass. First-year corn yield varied significantly with red clover strain, in both the double- and single-cut groups, although no strain differences were apparent by the second and third years. Compared to continuous corn with no N fertilizer, red clover increased corn yield by 1.5–1.8 t ha−1 in Year 1, by 0.4–0.9 t ha−1 in Year 2, and by 0–0.7 t ha−1 in Year 3. First-year corn yield was not significantly correlated with red clover parameters measured the preceding year, including aboveground biomass and nitrogen content at plowdown. However, observed patterns of response were consistent with a nitrogen-based plowdown benefit. Breeding to improve plowdown value will depend on identification of those specific plant attributes which confer legume plowdown benefit.Key words: Plowdown, green manure, red clover, nitrogen, corn


2021 ◽  
Author(s):  
Borislav Petkovic ◽  
◽  
Novo Pržulj ◽  
Vojo Radic ◽  
Darko Acimovic ◽  
...  

The aim of this research was to determine the genetic potential for green mass and hay yield of eight red clover genotypes over the two-year period (2010 and 2011). Yields in the first mowing of the first year and the aftermath of the second year did not significantly differ statistically. The highest average yields were gained in the first moving of the second year. The lowest average yields were given by the Viola variety and the highest by the Kolubara


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.


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

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