Results 121 to 130 of about 20,688 (254)

Running towards: Labour market incentives for runaway slaves in the British Cape Colony, 1830–1838

Asia‐Pacific Economic History Review, EarlyView.
Abstract Recent scholarship on slave escapes has increasingly emphasised economic motivation, but few studies have empirically investigated how market incentives influenced the decision‐making of enslaved individuals during transitions from coerced to wage labour.
Karl Bergemann, Gabriel Brown, Johan Fourie   +2 more
wiley   +1 more source

Late Split-Application with Reduced Nitrogen Fertilizer Increases Yield by Mediating Source-Sink Relations during the Grain Filling Stage in Summer Maize. [PDF]

Plants (Basel), 2023
Deng T, Wang JH, Gao Z, Shen S, Liang XG, Zhao X, Chen XM, Wu G, Wang X, Zhou SL.   +9 more
europepmc   +1 more source

Metolachlor for control of 'summer grasses' in maize

Proceedings of the New Zealand Weed and Pest Control Conference, 1976
G.R. Rowe, B.P. O'Connor, T.M. Patterson
openaire   +2 more sources

Field‐level crop choice responses to weather‐induced yield shocks in the US Corn Belt

American Journal of Agricultural Economics, EarlyView.
Abstract As climate change increases the frequency and severity of extreme heat events, farmers are expected to face greater variability in crop yields. Using 10 million field‐level observations, this study examines how farmers in the US Corn Belt adjust corn–soybean rotation decisions in response to yield shocks largely driven by weather fluctuations.
Seunghyun Lee
wiley   +1 more source

Influences of split application and nitrification inhibitor on nitrogen losses, grain yield, and net income for summer maize production. [PDF]

Front Plant Sci, 2022
Ren B, Ma Z, Zhao B, Liu P, Zhang J.
europepmc   +1 more source

Spatiotemporal variations in summer maize droughts in the Huaibei Plain

Guan'gai paishui xuebao
【Objective】 Drought is a significant abiotic stress affecting agricultural production in many regions of China. This study investigates the spatiotemporal variations in drought during the growing seasons of summer maize in the Huaibei Plain. 【Method】 The analysis was based on the drought severity index (DSI) from 2010 to 2019 calculated using ...
PENG Yujie, ZHU Yonghua, LYU Haishen, LU Wen, ZHU Wanting, WANG Yining, WANG Zhenlong   +6 more
openaire   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Exogenous 6-Benzyladenine Improved the Ear Differentiation of Waterlogged Summer Maize by Regulating the Metabolism of Hormone and Sugar. [PDF]

Front Plant Sci, 2022
Hu J, Ren B, Chen Y, Liu P, Zhao B, Zhang J.   +5 more
europepmc   +1 more source

1163. Heterotheca camporum (Greene) Shinners

Curtis's Botanical Magazine, EarlyView.
Summary Heterotheca camporum (Greene) Shinners (Compositae: Astereae: Chrysopsidinae) is described and illustrated. Notes are provided for the species' cultivation, propagation, likely pests and diseases, and availability. A full synonymy is given, along with type citations and known presence of type material, together with relevant notes.
Nicholas Hind, Christabel King
wiley   +1 more source

Effects of fertilizer under different dripline spacings on summer maize in northern China. [PDF]

Sci Rep, 2021
Li G, Bai Y, Wang L, Lu Y, Zhang J, Zhang Y.   +5 more
europepmc   +1 more source