Kernza intermediate wheatgrass (Thinopyrum intermedium) grain production as influenced by legume intercropping and residue management

2018 ◽  
Vol 98 (6) ◽  
pp. 1376-1379 ◽  
Author(s):  
C. Dick ◽  
D. Cattani ◽  
M.H. Entz
Keyword(s):  
Seed Yield ◽  
White Clover ◽  
Residue Management ◽  
Thinopyrum Intermedium ◽  
Grain Production ◽  
Sweet Clover ◽  
Melilotus Officinalis ◽  
Intermediate Wheatgrass ◽  
Residue Removal ◽  
Harvest Residue

Intermediate wheatgrass yielded 519 and 446 kg seed ha−1in years one and two after establishment. Autumn grazing increased seed yield compared with post-harvest residue removal or chopping. Inter-seeding legumes (alfalfa (Medicago sativa), sweet clover (Melilotus officinalis), and white clover (Trifolium repens) did not affect intermediate wheatgrass seed production.

Influence of post-harvest residue management and cultivar on tiller dynamics and seed yield in timothy

1994 ◽  
Vol 74 (3) ◽  
pp. 507-513 ◽  
Author(s):  
M. H. Entz ◽  
S. R. Smith Jr. ◽  
D. J. Cattani ◽  
A. K. Storgaard
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Phleum Pratense ◽  
Residue Management ◽  
Cultivar Differences ◽  
Grass Species ◽  
Compensatory Mechanisms ◽  
Burn Treatment ◽  
Post Harvest ◽  
Harvest Residue

Timothy (Phleum pratense L.) is a bunch-type cool season perennial grass species grown in Manitoba primarily for seed production. The objectives of this study were to determine the effect of post-harvest residue management (straw removal-SR, straw and stubble removal-SSR and fall burning-Burn) on tiller production, yield components and seed yield of five timothy cultivars (Basho, Climax, Goliath, Hokuo and Salvo), and to better understand the association between yield components and final seed yield in timothy crops grown in the dry subhumid region of the Canadian prairies. Two experiments were conducted over four production seasons at Arborg, MB and one production season at St. Claude, MB. Tiller number per m2 in spring (TS) and at harvest (THV) were measured in 1990 at St. Claude and in 1990 and 1991 at Arborg. Residue management (RM) treatment ranking for TS was Burn < SR < SSR, but tiller senescence and compensatory mechanisms resulted in equivalent THV values across all RM treatments. The number of seed-bearing tillers m−2 at harvest was also unaffected by RM. Seed yield was unaffected by RM in all instances, except at Arborg in 1989 where a significant RM × cultivar interaction was observed. The basis of the interaction was the greater sensitivity of Hokuo to the Burn treatment. Cultivar differences for seed yield were relatively consistent over years and between the two experiments, with Climax always ranking in the high yielding group and Salvo with the low yielding group. Based on analysis of yield components, it appeared that RM most affected early season growth (i.e. TS), while cultivar most affected later season growth (fertile tillers per unit area, seed yield per fertile tiller (SYFT)). Seed yield differences were most closely associated with SYFT (r2 = 0.97**) across cultivar treatments. Key words: Burning, straw removal, harvest index, yield components, forages

Seed Yield of Kentucky Bluegrass as Affected by Post‐Harvest Residue Removal 1

1983 ◽  
Vol 75 (3) ◽  
pp. 549-551 ◽  
Author(s):  
R. D. Ensign ◽  
V. G. Hickey ◽  
M. D. Bernardo
Keyword(s):  
Seed Yield ◽  
Kentucky Bluegrass ◽  
Post Harvest ◽  
Residue Removal ◽  
Harvest Residue

scholarly journals Effect of post-harvest forestry residue management practices on the diversity of epigeal coleopterans

2017 ◽  
Vol 70 (1) ◽  
pp. 8069-8075 ◽  
Author(s):  
Priscila Ramírez Aliaga ◽  
Amanda Huerta Fuentes ◽  
Jaime Eduardo Araya Clericus
Keyword(s):  
Species Richness ◽  
Management Practices ◽  
Diversity Index ◽  
Residue Management ◽  
Pitfall Traps ◽  
Central Chile ◽  
Post Harvest ◽  
Clear Cutting ◽  
Randomized Design ◽  
Harvest Residue

The aim of this work was to study the effect of post-harvest forestry residue management practices on the epigeal coleopterans diversity and abundance in a 1-yr old Pinus radiata plantation. Approximately 25-yr old P. radiata plantation was available, which was harvested by clear-cutting at the beginning of 2010 in Constitución, central Chile. Three post harvest residue management treatments were installed in a fully randomized design in blocks: 1) a control, where residues were intact left; 2) residue removed (> 2.5 cm diameter); and 3) burned. The coleopterans were sampled in spring and summer, using linear transects with pitfall traps. The abundance and richness, and diversity index of coleopterans were determined. A total of 23 species of 13 families were obtained. Both in the springand summer, the treatment with residues left registered significantly greater abundance and species richness. In the residue management, the practices of intact leaving residue should be considered as the least impacting on diversity and abundance of epigeal coleopterans and is recommended for creating refugee areas to promote diversity of beetles in this area of study.

Residue management increases seed yield of three turfgrass species on the Canadian prairies

2002 ◽  
Vol 82 (4) ◽  
pp. 687-692 ◽  
Author(s):  
B. D. Gossen ◽  
J. J. Soroka ◽  
H. G. Najda
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Poa Pratensis ◽  
Creeping Bentgrass ◽  
Kentucky Bluegrass ◽  
Residue Management ◽  
Row Spacing ◽  
Seeding Rate ◽  
Canadian Prairies ◽  
The Impact

Little information is available on the management of turfgrass species for seed production in the Canadian prairies. The objective of these studies was to assess the impact of residue management and row spacing on seed yield under irrigation. A factorial experiment was seeded at Saskatoon, SK, in 1993 to assess the impact of burning or scalping (very close mowing with residue removal) vs. mowing, and 20- vs. 40-cm row spacing on seed yield of Kentucky bluegrass (KBG) (Poa pratensis), creeping red fescue (CRF) (Festuca rubra subsp. rubra) and creeping bentgrass (CBG) (Agrostis palustris). Also, a residue management trial on KBG was seeded at Brooks, AB, in 1993. At Saskatoon, yield was higher at 20-cm spacing across all three species in 1994, but spacing had no impact on winter survival, stand density, tiller growth or yield in subsequent years. Burning and scalping consistently resulted in earlier spring green-up, a higher proportion of fertile tillers, and higher seed yield than mowing. Even with residue management, yield declined after one harvest in CBG and CRF, and after two harvests in KBG. At Brooks, residue management had a similar impact on yield of KBG. A second trial at Brooks examined the impact of row spacing (20, 40, 60 cm) and seeding rate (0.5 to 6 kg seed ha-1) on KBG. Seed yield was highest at 40-cm spacings in 1994, at 60 cm in 1995, and at 40 to 60 cm in 1996. Seeding rate did not have a consistent effect on yield. We conclude that a combination of residue management and 20- to 40-cm spacings provide the highest, most consistent seed yields for these turfgrass species in this region. Key words: Burning, clipping, turfgrass, seed production, row spacing, Poa, Festuca, Agrostis

New variety of white clover — “Izumrud”

2019 ◽  
Author(s):  
О. Тимошкина ◽  
О. Тимошкин
Keyword(s):  
Seed Yield ◽  
High Resistance ◽  
White Clover ◽  
Crude Protein ◽  
Weather Conditions ◽  
Forage Production ◽  
New Variety ◽  
Variety Trial ◽  
Green Mass ◽  
Trifolium Repens L

Исследования выполнены в Пензенской области в 2014 2018 годах. Клевер ползучий (Trifolium repens L.) многолетнее травянистое растение, которое можно использовать для коренного улучшения состояния лугов и пастбищ. Цель селекционной работы с клевером ползучим в Пензенском НИИСХ создание сорта с урожайностью зелёной массы 14 16 т/га, устойчивой семенной продуктивностью (150 250 кг/га), выдерживающего трёхчетырёхкратное стравливание или скашивание, переносящего кратковременную засуху, пригодного к механизированной уборке семян. Представлена характеристика нового сорта клевера ползучего Изумруд, переданного в 2018 году на государственное сортоиспытание. Метеорологические условия отличались по годам исследования, что позволило достаточно полно оценить перспективность сортобразца. По результатам трёх циклов конкурсного испытания (2015 2017 годы) урожайность зелёной массы нового сорта Изумруд составила 19,48 т/га, сбор сухого вещества 4,34 т/га, урожайность семян 151 кг/га, что на 13,7, 18,4 и 18,9 выше стандарта ВИК 70 соответственно. Содержание сырого протеина в сухом веществе составило 22,4 26,9, клетчатки не превышало 27 31. Повреждаемость вредителями слабая, поражаемость бурой пятнистостью и мозаикой клевера ползучего слабая, ниже стандартного сорта. Сорт высокоустойчив к корневым гнилям, раку клевера, аскохитозу. Сорт Изумруд пригоден к механизированной уборке семян. Высокая засухоустойчивость (5 баллов) и зимостойкость (96 100) нового сорта позволяет рекомендовать его для сенокосного и пастбищного использования во всех зонах распространения культуры. Экономический эффект при использовании на кормовые цели составляет 11,2 тыс. руб./га, на семена 7,2 тыс. руб./га. The investigation took place in the Penza region in 2014 2018. Breeding of a new white clover variety aimed at the development of a genotype that had green mass productivity of 14 16 t ha1, stable seed yield of 150 250 kg ha1, high resistance to triple or quadruple cutting, shorttime drought and automized harvesting. This paper gives the description of white clover Izumrud that was sent to the State variety trial in 2018. The variety was tested under the different weather conditions. Three years of the competitive variety trial (2015 2017) showed that its green mass productivity amounted to 19.48 t ha1, dry matter (DM) content 4.34 t ha1, seed yield 151 kg ha1, exceeding the standard variety (VIK 70) by 13.7, 18.4 and 18.9, respectively. Crude protein content was 22.4 26.9, fiber up to 27 31. Izumrud also exceeded VIK 70 in tolerance to pests, Pseudopeziza trifolii and mosaic virus. The variety had high resistance to root rot, clover wilt and Ascochyta leaf spot. It tolerated automized harvesting, drought and cold and was recommended for farm cultivation. Its economic efficiency amounted to 11.2 thousand RUB ha1 under forage production and 7.2 thousand RUB ha1 under seed production.

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