Results 51 to 60 of about 16,351 (250)

Different Responses of Various Chlorophyll Meters to Increasing Nitrogen Supply in Sweet Pepper

Frontiers in Plant Science, 2018
Intensive vegetable production is commonly associated with excessive nitrogen (N) fertilization and associated environmental problems. Monitoring of crop N status can enhance crop N management.
Francisco M. Padilla, Romina de Souza, M. Teresa Peña-Fleitas, Marisa Gallardo, Carmen Giménez, Rodney B. Thompson   +5 more
doaj   +1 more source

Is Precision Agriculture Technology Adoption Persistently Overestimated?

Agribusiness, EarlyView.
ABSTRACT Precision agriculture is sometimes assumed to diffuse steadily over time, and industry planning frequently extrapolates early adoption trends forward. This study evaluates the accuracy of such expectations by comparing agricultural input dealers' forecasts of future service offerings with the actual levels of offerings that dealerships ...
Trey Malone, Chad Fiechter, Zanliang Meng, James Lowenberg‐DeBoer, Bruce Erickson, Jay Akridge   +5 more
wiley   +1 more source

Real‐time monitoring of root dielectric properties for assessing crop plant damage caused by foliar application of glyphosate

Applications in Plant Sciences, EarlyView.
Abstract Premise There is a knowledge gap regarding how foliar injury and restricted water uptake can be detected by measuring root dielectric response. This pot study nondestructively evaluated the efficiency of real‐time dielectric measurement to monitor the effects of glyphosate spraying.
Imre Cseresnyés, Anna Füzy, Tünde Takács   +2 more
wiley   +1 more source

Análise não destrutiva de pigmentos fotossintéticos em folhas de gergelim Non destructive analysis of photosynthetic pigments in leaves of Sesamum indicum (L.)

Revista Brasileira de Engenharia Agrícola e Ambiental, 2012
Objetivou-se, com o presente trabalho, relacionar pigmentos fotossintéticos extraídos de modo clássico em laboratório com leituras obtidas pelo clorofilômetro portátil ClorofiLOG 1030, em folhas de gergelim, por meio de modelos matemáticos.
João P. G. Rigon, Napoleão E. de M. Beltrão, Silvia Capuani, Jósé F. de Brito Neto, Fabíola V. de F. Silva   +4 more
doaj   +1 more source

Estimation of chlorophyll in Quercus leaves using a portable chlorophyll meter: effects of species and leaf age [PDF]

Annals of Forest Science, 2010
The potential of a chlorophyll meter (CCM-200, Opti-Sciences, Tyngsboro, MA, USA) for the estimation of total leaf chlorophyll contents was evaluated in leaves of different developmental stages for Quercus pyrenaica Willd., Q. faginea Lam., Q. suber L. and Q. ilex L. subsp.
Silla, Fernando, González-Gil, Ana, González-Molina, Mª Esther, Mediavilla, Sonia, Escudero, Alfonso   +4 more
openaire   +2 more sources

Species Dynamics and Gene Expression in Algal Polycultures Under Mixotrophic Cultivation in Outdoor Pilot‐Scale Nordic Conditions

Biotechnology and Bioengineering, EarlyView.
These results demonstrate that mixotrophic conditions drive both microbial community shifts and metabolic reprogramming, underscoring the importance of cultivation strategy and polyculture selection for targeted applications such as nutrient recovery and bioproduct generation.
Quyen Nham, Hanna Farnelid, Catherine Legrand, Elin Lindehoff   +3 more
wiley   +1 more source

Application of a Portable Chlorophyll Meter to Assess the Nitrogen Sufficiency Index and Nitrogen Requirements in Sweet Potatoes

Agriculture
Balanced nitrogen (N) supply is essential for high root yield in sweet potatoes (Ipomoea potatoes [L.] Lam.). A portable chlorophyll meter can support N fertilization management.
Fabrício E. Rodrigues, Adalton M. Fernandes, Arthur V. Oliveira, Pablo F. Vargas, Emerson F. C. Souza, Politon T. P. Guedes, Ricardo T. Figueiredo, Ítala T. Guimarães   +7 more
doaj   +1 more source

Chlorophyll meter as nitrogen management tool in malting barley

Communications in Soil Science and Plant Analysis, 1999
Abstract Variable precipitation in many regions makes it difficult to predict yield goals and nitrogen (N) rates for malting grade barley (Hordeum vulgare L.). During years with below normal growing season precipitation, barley fertilized at the recommended rate often exhibits grain protein concentrations exceeding what is acceptable for malting.
Wienhold, Brian J., Krupinsky, J. M.
openaire   +2 more sources

High atmospheric pressure rescues plant growth under humidity stress: A model for climate‐resilient deep underground agriculture

Deep Underground Science and Engineering, EarlyView.
High atmospheric pressure (120 kPa) in deep underground counteracts humidity‐induced physiological stress in plants, stabilizing water balance and enhancing antioxidative defenses. This synergy boosts biomass despite elevated humidity, demonstrating sustainable deep underground agriculture potential under climate uncertainty.
Yuxin He, Linglu Xu, Xiao Tan, Wenhua Zhuang, Naiwen Li, Chao Liu, Bo Tan   +6 more
wiley   +1 more source

SPAD-502 readings in response to photon fluence in leaves with different chlorophyll content

Revista Ceres, 2010
The chlorophyll meter (SPAD-502) is widely used to estimate chlorophyll content, but non-uniform chloroplast distribution can affect its accuracy. This study aimed to assess the effect of photon fluence (F, irradiance x time of illumination) in leaves ...
Helena Cristina Santos Nascimento, Ricardo Antonio Marenco   +1 more
doaj   +1 more source