Results 131 to 140 of about 508,583 (359)

Birds as Weed Destroyers [PDF]

, 1899
Sylvester D. Judd
openalex   +1 more source

Late spring urea application increased apparent carbon dioxide equivalence emissions but fall and summer applications did not

Journal of Environmental Quality, EarlyView.
Abstract Synchronizing nitrogen (N) fertilizer application with plant N uptake, as opposed to applying earlier, is believed to improve N use efficiency while simultaneously reducing nitrate leaching, ammonia volatilization, and greenhouse gas emissions. However, little research has been conducted to confirm that this is true.
G. W. Reicks, D. E. Clay, S. A. Clay, D. R. Joshi, J. Moriles‐Miller, S. Westhoff, S. A. Bruggeman   +6 more
wiley   +1 more source

Greenhouse gas emissions altered by the introduction of a year‐long fallow to continuous rice systems

Journal of Environmental Quality, EarlyView.
Abstract Rice (Oryza sativa L.) production in California follows a norm of mono‐cropping with little to no rotations or fallows. Both winter droughts, which lead to water restrictions, and spring rains, which inhibit field machinery operations, have resulted in increased fallow frequencies, where no crop is grown during the summer growing season.
Zhenglin Zhang, Tommy L. D. Fenster, Bruce A. Linquist   +2 more
wiley   +1 more source

INFORMATION VALUE IN WEED MANAGEMENT [PDF]

Use of the economic threshold to improve the efficiency of preemergent-herbicide treatment decisions is limited by a lack of weed information. An economic model for assessing the expected value of weed information needed to implement a threshold decision
Allen, P. Geoffrey, Bhowmik, Prasanta C., Gillmeister, William J., Moffitt, L. Joe   +3 more
core   +1 more source

Growth and competition model for organic weed control [PDF]

, 2002
There is a more detailed Executive Summary at the top of the attached document, which is the final report for Defra Project OF0177. The project aimed to examine the organic extension of a simple mechanistically-based growth and competition model ...
Anon
core  

The Loco-Weed Disease [PDF]

, 1908
Reid Hunt
openalex   +1 more source

Soil carbon storage or sustainable conservation agriculture practices—Which should be our goal?

Journal of Environmental Quality, EarlyView.
Abstract Practices such as no‐tillage, cover crops, or diversification of crop rotation are thought to be capable of addressing climate change challenges while ensuring food security. Public and private sectors at national and international levels are currently incentivizing farmers to adopt these practices to increase soil carbon (C) levels, thus ...
Manbir Rakkar, Leonardo Deiss, Warren A. Dick   +2 more
wiley   +1 more source

Stress Increases Ecological Risk of Glufosinate-Resistant Transgene Located on Alien Chromosomes in Hybrids Between Transgenic Brassica napus and Wild Brassica juncea

Plants
When glufosinate-resistant transgenic Brassica napus (transgene PAT located on C chromosome) were backcrossed with wild Brassica juncea, 50% of the progeny expressed PAT under favourable conditions.
Zicheng Shao, Lingling Dai, Longnan Liu, Sheng Qiang, Xiaoling Song   +4 more
doaj   +1 more source

Spring Wheat Planting Date Trial [PDF]

, 2010
Growing demand for local organic food has inspired new efforts to revive a staple element of the New England food system. Weed management is one of the foremost production related challenge for organic growers.
Cummings, Erica, Darby, Heather, Gervais, Amanda, Halteman, Philip, Madden, Rosalie, Monahan, Susan   +5 more
core   +1 more source

Satellite assessment of winter cover crop and conservation tillage outcomes to support adaptive management in working landscapes

Journal of Environmental Quality, EarlyView.
Abstract The use of winter cover crops and conservation tillage are agricultural practices promoted to reduce nutrient and sediment loss from cropland, improve soil health, increase infiltration, and support farm nutrient cycling and ecosystem services. However, environmental performance of these practices is variable in the working farm landscape. The
W. Dean Hively, Feng Gao, Gregory W. McCarty, Craig S. T. Daughtry, Xuesong Zhang, Jyoti Jennewein, Alison Thieme, Brian T. Lamb, Jason Keppler, Cathleen J. Hapeman, Michael Cosh, Steven B. Mirsky   +11 more
wiley   +1 more source