Results 121 to 130 of about 508,583 (359)

A Dynamic Optimisation Model of Weed Control [PDF]

It is argued in this paper that static approaches to weed management, where the benefits and costs are only considered within a single season, are inappropriate for assessing the economic benefits of weed control technologies. There are carryover effects
Cacho, Oscar J., Jones, Randall E.
core   +1 more source

Change of the weed seed bank during the first four years of a five-course crop rotation with organic vegetables [PDF]

, 2008
In a five-course rotation with organic vegetables (white cabbage, carrot and onion) the weed seed bank was reduced the year after two continuous years with red clover, mainly because of mowing of the second year red clover.
Brandsæter, Lars Olav, Seljåsen, Randi, Sjursen, Helge   +2 more
core  

Management Strategies and Agricultural Calendars for Forage Production in Semi‐Arid Brazil Using AquaCrop

Irrigation and Drainage, EarlyView.
ABSTRACT Forage production in semi‐arid regions of Brazil is limited by water deficit. This study aimed to identify the most adapted and efficient production systems and define their agricultural calendars for the semi‐arid region of Brazil. Twenty‐nine production arrangements that included different cropping conditions, plant density, plant cycles ...
Antonio Gebson Pinheiro, Cleber Pereira Alves, Carlos André Alves de Souza, George do Nascimento Araújo Júnior, Alexandre Maniçoba da Rosa Ferraz Jardim, Regina Crisóstomo Grangeiro Pereira, José Edson Florentino de Morais, Luciana Sandra Bastos de Souza, Daniela de Carvalho Lopes, Antonio José Steidle Neto, Adriano Nascimento Simões, Fleming Sena Campos, Kaique Renan da Silva Salvador, João Emanoel Ambrósio Gomes, Enio Farias de Franca e Silva, Thieres George Freire da Silva   +15 more
wiley   +1 more source

Economic Aspects of Physical Intra-Row Weed Control in Seeded Onions [PDF]

, 1998
The paper presents a model to calculate the costs for weed control in organic row crops. The model makes it possible to analyse the economic consequences of different weed control strategies in row crops. Particularly the time needed for hand-weeding had
Melander, Senior scientist Bo
core  

Maleic Hydrazide in the Control of the Bulbous Weed Oxalis pes-caprae [PDF]

, 1958
NG Marinos
openalex   +1 more source

Weed Control in Parsley

EDIS, 1969
Parsley is placed in the "leafy greens" EPA group due to its closeness to lettuce and spinach for residues. Bensulide may be applied to parsley preplant incorporated or preemergence on mineral soils. This document is HS952, one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and ...
openaire   +11 more sources

Evaluation of CERES‐Maize Model for Predicting Yield, Evapotranspiration, Water Productivity and Drought Stress Indices Under Center Pivot, Subsurface Drip and Furrow Irrigation Systems With Different Irrigation Levels Simultaneously

Irrigation and Drainage, EarlyView.
ABSTRACT The effects of different irrigation methods (center pivot [CPI], subsurface drip [SDI] and furrow irrigation [FI]) and levels (full irrigation treatment [FIT], 80% FIT, 60% FIT and rainfed) on yield, crop evapotranspiration (ETc), ET‐water productivity (WPET) and drought stress index for leaf expansion (SIE) and photosynthesis (SIP) of maize ...
Ebrahim Amiri, Suat Irmak, P. Aalaee Bazkiaee   +2 more
wiley   +1 more source

A Haploid Mutant in the Jimson Weed, " Datura stramonium " [PDF]

, 1922
A. F. Blakeslee, John Belling, M. E. Farnham, A. Dorothy Bergner   +3 more
openalex   +1 more source

Weeds and Weed Management in Cabbages. A Review

, 2005
Published
TEI, Francesco, PANNACCI, Euro, Cirujeda A., Dobrzanski A., Froud Williams R. J., Rocha F., Ruuttunen P., Sanseovic T., Simoncic A., Torma M., Van Der Weide R., Verschwele A., Zaragoza C., Neuweiler R.   +13 more
openaire   +2 more sources

The effects of ongoing internal immigration enforcement on the US agricultural labor supply

Journal of the Agricultural and Applied Economics Association, EarlyView.
Abstract We demonstrate that unexpected increases in enforcement have a temporary but costly impact on labor supply among noncitizen farmworkers. Analyzing Current Population Survey data and immigration‐related arrests, we find that unexpected increases in immigration arrests decrease labor force participation (LFP) among noncitizen farmworkers by up ...
Alejandro Gutiérrez‐Li, Joaquin Alfredo‐Angel Rubalcaba   +1 more
wiley   +1 more source