tiller Articles
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Modeling tiller density, growth, and yield of mediterranean perennial grasslands with STICS
A generic crop model (STICS) was adapted (STICS–Grassland) to model growth, yield, and environmental impacts of grasslands in France. It is a semimechanistic model combining equations of physiological processes and mathematical relationships between processes in a daily time step. The Information et Suivi Objectif des Prairies (ISOP; Grassland Information and Objective Survey) application was ...
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Wheat: Preparing the Root System for Tillering and Vegetative Growth
The number of tillers is the primary yield component of straw cereals, including wheat, the world’s most widely grown cereal. The number of tillers is fundamental to crop yield development. It will compensate for the loss of plants during sowing due to poor planting. It is directly related to the final number of ears. Three leaves constitute a tiller, and this tiller can be transformed ...
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Tiller contribution to spring wheat yield under varying seeding and nitrogen management
Hard red spring wheat (HRSW) (Triticum aestivum L.) grain yield is comprised of the combined production of the main stem and tiller spikes. Experiments were conducted under dryland (Casselton, ND) and irrigated (Carrington, ND) conditions from 2003 to 2005 to determine tiller development and the relative contribution of main and tiller wheat spikes to final grain yield under varying cultivar, ...
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Morphology and Genetics of biomass in little bluestem
Little bluestem [Schizachyrium scoparium (Michx.) Nash] was the most important dominant species of uplands in the tallgrass prairie. Presently, it is a dominant species, most significantly on coarse-textured soils, in the mixed-grass prairie region of the United States and Canada. This wide geographical adaptation to dry soils suggests little bluestem has potential for biomass production in areas ...
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Summer–fall seeding dates for six cool-season grasses in the midwest united states
The effect of late summer (fall) planting date for cool-season grasses in the upper Midwest is not well understood. Objectives of this research were to determine optimum planting dates of late-summer/fall seedings in different environments for several cool-season grass species and to gain information on tiller density and tillers plant–1 relative to dry matter yield. Late-summer/fall seedings of ...
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Land Farming Application Reduces TPH by 90% to 99%
Petrox microbes were added to excavated petroleum-contaminated soil to accelerate the degradation of DRO and ERO total petroleum hydrocarbons. Petrox was added by spraying the surface of the soil with a hydrated Petrox solution. The microbes were mixed into the soil using a tractor-mounted disc tiller. ...
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Variation in characteristics and imazamox tolerance of feral rye
Rye (Secale cereale L.) is a minor crop in America, with similarities to wheat (Triticum aestivum L.) in growth habit and distribution. However, feral rye has become a weed in wheat. Little is known about variation in feral rye morphological characteristics that influence success of cultural controls. Thus, 21 feral rye populations were sampled from wheat fields in central Oklahoma to ...
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Weed control in organic farming
Probably the most cost-intensive and time-consuming operation in organic farming is the elimination of weeds at different stages of plant development. Due to the impossibility of herbicides application, the processing must be performed mechanically. For this purpose farmers use a wide variety of rotary and striegel harrows, cultivators and tillers for interrow processing and ...
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Jointed goatgrass management with Imazamox-resistant cultivars in a winter Wheat–fallow rotation
Jointed goatgrass (Aegilops cylindrica Host) is an economically important weed in winter wheat (Triticum aestivum L.)–fallow production regions of the United States. Few options exist for management of jointed goatgrass in winter wheat due to the close genetic relationship between the two species. This research evaluated use of imazamox herbicide ...
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Determination of dry matter yield from legume–grass swards by field spectroscopy
An efficient and accurate detection of dry matter (DM) yield of legume–grass mixtures can facilitate a targeted and site-specific management of legume-based swards. The major objective of this study was to examine the relationship between spectral signatures of legume–grass swards and DM yield across a wide range of legume species (white clover [Trifolium repens L.], red clover [T. pratense L.], ...
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Giant black-grass requires lock stock approach
Nigel Riches, Arable Technical Specialist for Certis, explains what he’s been seeing in the field. “Black-grass is a problem that in the past has generally been confined to the main arable areas, in the east of the country. “But increasingly we’re seeing this pernicious weed spreading further west each season. Where previously black-grass has not been a big issue in the ...
By Certis UK
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Development of canopy reflectance models to predict forage quality of legume–grass mixtures
Timely assessments of nutritive values of legume-based swards during the growing season can facilitate a targeted and site-specific forage management. This study was undertaken to explore the potential of field spectral measurements for a nondestructive prediction of metabolizable energy, ash content, crude protein (CP), and acid detergent fiber of legume–grass mixtures. A population of 200 ...
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Local advice on managing blackgrass
Blackgrass is a weed that troubles many, and controlling it is an increasing challenge, particularly with the small armoury of products available, and the growing issue with resistance. Paul Drinkwater, Crop Production Manager for Abbots Ripton Farming Company, explains how, in his 40 years of being in the Cambridgeshire area, the blackgrass problem has evolved. “My role sees me manage ...
By Certis UK
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Corn morphology, mass, and grain yield as affected by early-season red: far-red light environments
The spatial arrangement among plants affects both vegetative and reproductive meristem development. More axillary meristems develop at lower plant densities, which are associated with relatively high red:far-red light ratios (R:FRs; 645:735 nm). However, little is known about the effect of R:FR on corn (Zea mays L.) productivity. We conducted field research to determine the effect of early-season ...
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Seeding rate and nitrogen management effects on spring wheat yield and yield components
Seeding rate, N level, and N application timing are key management factors for spring wheat (Triticum aestivum L.) production in North Dakota. Experiments were conducted under dryland (Casselton, ND) and irrigated (Carrington, ND) conditions in 2003 to 2005 to determine the optimum combination of seeding rate and N management to maximize yield of hard red spring wheat (HRSW). Treatments consisted ...
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Effect of height on the competitive ability of wheat with oats
Competitive ability of wheat is influenced by a range of attributes such as plant height, tiller number, and light interception. This study focused on the effect of plant height on weed competitiveness of a set of near-isogenic wheat lines (NILs). The set included seven bread wheat (Triticum aestivium L.) and six durum wheat (T. turgidum L.) cultivars, each having a semidwarf and tall ...
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Goosegrass and Bermudagrass competition under compaction
Goosegrass (Eleusine indica L.) is a serious weed in trafficked areas of bermudagrass (Cynodon spp.) golf and sports turf. The objective of this study was to evaluate soil compaction and canopy cover as determinants of goosegrass competition in bermudagrass turf in sand soil. Goosegrass cover, plant density, and soil penetration resistance (SPR) were measured in traffic and no-traffic plots in ...
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Evaluation of elemental allelopathy in Acroptilon repens (L.) DC. (Russian Knapweed)
Abstract Although Acroptilon repens (L.) DC. (Russian knapweed) is known to concentrate zinc (Zn) in upper soil layers, the question of whether the elevated Zn has an allelopathic effect on restoration species has not been addressed. Experiments were conducted to investigate whether soils collected from within infestations of A. repens (high-Zn) inhibit the germination or growth and ...
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Winter wheat and maize response to urea ammonium nitrate and a new urea formaldehyde polymer fertilizer
Slow release N fertilizers have potential to improve yield and nitrogen use efficiency (NUE) in winter wheat (Triticum aestivum L.) and maize (Zea mays L.). A slow release urea formaldehyde polymer (UFP) was compared with aqueous urea ammonium nitrate (UAN) [(NH2)2CO, NH4NO3] during a 2-yr field experiment in North Carolina. Crops were grown on Candor (sandy, siliceous, thermic Grossarenic ...
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PTO Shaft 4 Series – Replacement for Bondioli & Pavesi PTO Shaft
A Four Series PTO (Power Take-Off) shaft is a form of power transmission device made of metal that is used to transfer energy from an engine or any other power source to equipment like a baler or mower. The term "4 series" signifies the dimensions as well as the specifications for the PTO shaft which are designed to handle a specific amount of torque and power. The PTO shaft of the 4 Series is ...
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