Results 31 to 40 of about 207,187 (286)

Assessment of the Standardized Precipitation and Evaporation Index (SPEI) as a Potential Management Tool for Grasslands

open access: yesAgronomy, 2019
Early warning of detrimental weather and climate (particularly drought) on forage production would allow for tactical decision-making for the management of pastures, supplemental feed/forage resources, and livestock.
Patrick J. Starks   +6 more
doaj   +1 more source

Advances in weed management for organic cereal production in southeast Australia [PDF]

open access: yes, 2005
Organic cereal production in southeast Australia is challenging for producers due to a range of e of influences such as weeds and low soil available phosphorus.
Burnett, Viv   +2 more
core  

Consensus Formation and Change are Enhanced by Neutrality

open access: yesAdvanced Science, EarlyView.
Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag   +3 more
wiley   +1 more source

Small Grain Forage Trial Nitrogen Fertility and Harvest Date [PDF]

open access: yes, 2012
Cool season annual forages, such as cereal grains, can provide early season grazing as well as high quality stored feed. However, it is unclear if quality and yield of these forages could be improved through better fertility management.
Cummings, Erica   +4 more
core   +1 more source

Adult Sex Ratio as a Demographic Feedback Linking Mating Systems, Parental Care, and Evolution

open access: yesAdvanced Science, EarlyView.
Breeding systems are some of the most diverse social behavior, and our team is investigation the evolutionary causes of this diversity. This review summarises our research carried out at the University of Bath. We argue that demographic components of wild populations, especially the adult sex ratio, plays a key role driving breeding system variation ...
Tamás Székely, Oscar G. Miranda
wiley   +1 more source

Comparative Winterhardiness of Cultivated and Native Alaskan Grasses, and Forage Yield and Quality as Influenced by Harvest Schedules and Frequencies, and Rates of Applied Nitrogen [PDF]

open access: yes, 1994
Objectives of this investigation were to compare certain traditional forage grasses with several native Alaskan grass species for forage yield, forage quality as measured by percent crude protein and digestibility (in vitro dry-matter disappearance ...
Klebesadel, Leslie J.
core  

Optimal Grazing Exclusion Duration to Enhance Soil Carbon Sequestration in Degraded Grasslands

open access: yesAdvanced Science, EarlyView.
Across China, grazing exclusion reaches the national mean soil organic carbon recovery benchmark sooner in high‐MAP regions (> 500 mm), but recovery is much slower where MAP < 300 mm. Scaling this strategy to 70% of China's degraded grasslands would sequester about 1.52 Pg of soil carbon over 10 years—roughly 17% of annual global fossil‐fuel emissions.
Bin Zhang   +9 more
wiley   +1 more source

Corn Cropping Systems to Improve Economic and Environmental Health [PDF]

open access: yes, 2017
In 2017, UVM Extension’s Northwest Crops & Soils Program continued a multi-year trial at Borderview Research Farm in Alburgh, VT to assess the impact of corn cropping systems on overall health and productivity of the crop and soil.
Cubins, Julija   +4 more
core   +1 more source

Livestock Tango: U.S. and Latin America Dance Together, but Who Will Lead?

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT This study examines the competitiveness between Latin American and U.S. livestock and meat sectors. We employ a computable general equilibrium modeling framework to evaluate two scenarios: coordinated improvements in Latin American productivity, transport efficiency, and market access (Scenario I), and the minimum productivity gains required ...
Taís C. Menezes   +2 more
wiley   +1 more source

Corn Cropping Systems to Improve Economic and Environmental Health [PDF]

open access: yes, 2015
In 2015, UVM Extension’s Northwest Crops & Soils Program continued a multi-year trial at Borderview Research Farm in Alburgh, VT to assess the impact of corn cropping systems on overall health and productivity of the crop and soil.
Calderwood, Lily   +6 more
core   +1 more source

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