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Jakob Lavrsen Kure, Jakob Krabben, Simon Vilms Pedersen, Marco Carozzi and Sven G. Sommer
Ammonia (NH3) emission from agriculture is an environmental threat and a loss of nitrogen for crop production. Mineral fertilizers and manure are significant sources of NH3; therefore, abatement technologies have been introduced to mitigate these emissio...
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Eleni M. Abraham, Paraskevi Sklavou, Aikaterini Loufi, Zoi M. Parissi and Apostolos P. Kyriazopoulos
The multiple agroforestry land uses of oak forests are of great ecological and economic interest as they contribute to the improvement of animal husbandry, wildlife, and environment. However, herbivory by wildlife and livestock highly affects the structu...
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Meiling Cui, Yang Guo and Jiwei Chen
The development of a farmland transfer market and the spatial characteristics of transfer plots are crucial factors influencing chemical input reduction in agricultural production with relation to the endowment of fragmented agricultural land resources. ...
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Yuxi Guo and Henk Siepel
In 1959, a small forest lot has been investigated thoroughly by the former Dutch Institute of Applied Biological Research in Nature (ITBON). The site was selected because of the steep gradients found in soil pH and moisture content. We focus here on the ...
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Eun-Taek Sung, Sangyong Park and Donghyun Baek
In this paper, output capacitor-less low-dropout (LDO) regulator using active-feedback and current-reuse feedforward compensation (AFCFC) is presented. The open-loop transfer function was obtained using small-signal modeling. The stability of the propose...
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Joseph Oakes, Maria Balota, Alexandre-Brice Cazenave and Wade Thomason
Tiller density is indicative of the overall health of winter wheat (Triticum aestivum L.) and is used to determine in-season nitrogen (N) application. If tiller density exceeds 538 tillers per m2 at GS 25, then an N application at that stage is not neede...
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Jesús Rodrigo Comino, Thomas Iserloh, Xavier Morvan, Oumarou Malam Issa, Christophe Naisse, Saskia D. Keesstra, Artemio Cerdà, Massimo Prosdocimi, José Arnáez, Teodoro Lasanta, María Concepción Ramos, María José Marqués, Marta Ruiz Colmenero, Ramón Bienes, José Damián Ruiz Sinoga, Manuel Seeger and Johannes B. Ries
Small portable rainfall simulators are considered a useful tool to analyze soil erosion processes in cultivated lands. European research groups in Spain (Valencia, Málaga, Lleida, Madrid and La Rioja), France (Reims) and Germany (Trier) have used differe...
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Jing Zhou, Yushan Wu, Jian Chen, Mingren Cui, Yudi Gao, Keying Meng, Min Wu, Xinyu Guo and Weiliang Wen
Solving the problem of the stem contour extraction of maize is difficult under open field conditions, and the stem diameter cannot be measured quickly and nondestructively. In this paper, maize at the small and large bell stages was the object of study. ...
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Md. Enamul Haque, Richard W. Bell, Amir Kassam and Md. Nur Nobi Mia
Smallholders in Asia and Africa require low-cost seed drills for minimal soil disturbance while establishing various crops. A seed drill that can be drawn by the widely-available two-wheel tractor (2WT) is an attractive option for mechanization of no-til...
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Wisdom Akpalu and Mintewab Bezabih
Land tenure arrangements in Africa are generally skewed in favour of males. Compared to males, female plot owners face complex sets of constraints and systemic high tenure insecurity which culminate in low yields. In order to obtain better returns, some ...
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Ordell A. Steen,Michaela Waterhouse,Harold Armleder,Nola M. Daintith
This study compares pine natural regeneration density and height growth in small harvested openings (0.01?0.07 ha) within two biogeoclimatic subzones (Sub-Boreal Pine?Spruce [SBPS] xc and Montane Spruce [MS] xv) and three partial harvesting treatments on...
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Lê Tr?ng Kim,Nguy?n Quang Tu?n DOI: 10.26459/jed.v109i10.3679
Tóm t?t: Bài báo gi?i thi?u nh?ng nét t?ng quát v? hi?n tr?ng chu?i lúa g?o t?nh Hà Tinh và th?o lu?n d?nh hu?ng cung nhu các gi?i pháp phát tri?n ti?u ngành này theo chu?i giá tr?. ? qui mô nh? hon, nhung ngh? tr?ng lúa ? Hà Tinh ph?n ánh khá t?t các d?...
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Qiang Feng, Wenwu Zhao, Yang Qiu, Mingyue Zhao and Lina Zhong
Soil moisture is an important factor for vegetation restoration and ecosystem sustainability in the Loess Plateau of China. The strong spatial heterogeneity of soil moisture is controlled by many environmental factors, including topography and land use. ...
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Liliya A. Demidova, Dmitry O. Zhukov, Elena G. Andrianova and Alexander S. Sigov
This paper explores the social dynamics of processes in complex systems involving humans by focusing on user activity in online media outlets. The R/S analysis showed that the time series of the processes under consideration are fractal and anti-persiste...
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Gabriele Di Bona and Andrea Giacobbe
Here, we study three fundamental climatic phenomena: The seasonal lag, the diurnal lag, and the asymmetry of daily temperature variation. We write a nonlinear ODE based on an energy balance for surface temperature and humidity. The model focuses on small...
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James Bunce
Because of continuing increases in atmospheric CO2, identifying cultivars of crops with larger yield increases at elevated CO2 may provide an avenue to increase crop yield potential in future climates. Free-air CO2 enrichment (FACE) systems have most oft...
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Chun Wang, Yongchao Shao, You Zhang, Zhi Xin, Jian Chen, Weiguo Zhang and Fuzeng Yang
In this study, a comb-type buckwheat-harvesting device was designed and tested for use in hilly areas and on small plots of buckwheat in China. The device uses semi-feeding and allows for threshing before cutting. Through the parametric design of the thr...
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Karin S. Levin, Felizitas Winkhart, Kurt-Jürgen Hülsbergen, Hans Jürgen Reents and Karl Auerswald
Agricultural ammonia (NH3) emissions can have serious environmental impacts, lower fertiliser nitrogen-use efficiencies, and cause economic losses. NH3 losses may not only occur directly from organic fertilisers such as biogas digestates when applied to ...
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Bowei Li, Yanjun Qian and Fanbin Kong
The excessive use of chemical fertilizers (OCF) is one of China?s main sources of agricultural nonpoint source pollution. It is debatable whether outsourcing service adoption (FOS) reduces OCF. This article argues that farm size and plot size can moderat...
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Asha Ally Hatibu, Essegbemon Akpo, Gerald Alex Lukurugu, Joseph Nzunda, Patrick Okori and Chris O. Ojiewo
Making quality seed of improved legume varieties sustainably available and accessible to farmers in a timely manner and at affordable price is a major challenge in sub-Saharan Africa (SSA). Overcoming this challenge requires collective and long-term acti...
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