Results 131 to 140 of about 2,806,447 (347)

Integrated nutrient management, soil fertility, and sustainable agriculture: current issues and future challenges [PDF]

The challenge for agriculture over the coming decades will be to meet the world's increasing demand for food in a sustainable way. Declining soil fertility and mismanagement of plant nutrients have made this task more difficult.
Goletti, Francesco, Gruhn, Peter, Yudelman, Montague   +2 more
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Do nutrient uptakes and grain yields differ between spring barley varieties grown for organic farming as mono-crop and in mixture: Characteristics of spring barley varieties for organic farming [PDF]

, 2004
Manure application increased yield. Hence the study was conducted under the conditions of moderate nutrient stress and in all probability nitrogen stress. Under this condition nutrient uptakes, biomass production and grain yields did vary between Otira,
Berntsen, Senior Scientist J., Nielsen, Professor N.E., Thomsen, Senior Scientist I.K.   +2 more
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Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source

Soil fertility [PDF]

, 2015
Africa?s consumption of fertilizers is the lowest in the world and organic matter that could, to some extent, replace fertility, is often burnt and soils left bare to the degrading effects of the sun and the wind.
Technical Centre for Agricultural and Rural Cooperation
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Subterranean environments contribute to three‐quarters of classified ecosystem services

Biological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola, David Brankovits, Tiziana Di Lorenzo, Isabel R. Amorim, Raluca Ioana Bancila, Adrià Bellvert, Enrico Bernard, Anna Blomberg, Paulo A.V. Borges, Martina Cappelletti, Rodrigo Lopes Ferreira, Rosalina Gabriel, Diana M. P. Galassi, Laura Garzoli, Vasilis Gerovasileiou, Grant C. Hose, Kathryn L. Korbel, Simone Martino, Ana Z Miller, Nataša Mori, Veronica Nanni, Giuseppe Nicolosi, Mattia Saccò, Troy S. Sakihara, Marconi Souza Silva, Anne E. Tamalavage, Maja Zagmajster, Efraín Chávez, Christian Griebler, Pedro Cardoso, Alejandro Martínez   +30 more
wiley   +1 more source

A roadmap to key traits of invasive Drosophilidae

Biological Reviews, EarlyView.
ABSTRACT Biological invasions have intensified in recent decades, mostly driven by international trade and travel, raising significant concerns, particularly regarding insect pests. Once non‐native species establish, they can disrupt natural ecosystem stability, undermine agroecosystem sustainability and cause substantial economic losses.
Gwenaëlle Deconninck, Bréa Raynaud‐Berton, Méghan Boulembert, Olivier Chabrerie, Aude Couty, Franck Dedeine, Patrice Eslin, Vincent Foray, Romain Georges, Patricia Gibert, Laurence Mouton, Sylvain Pincebourde, David Renault, Christelle Suppo, Hervé Colinet   +14 more
wiley   +1 more source

Wayne E. Sabbe Arkansas Soil Fertility Studies 2018 [PDF]

, 2019
Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops.
Slaton, Nathan A.
core   +7 more sources

Winter Wheat Nitrogen Content Prediction and Transferability of Models Based on UAV Image Features

Agriculture
Accurate and timely monitoring of plant nitrogen content (PNC) is essential for precision agriculture (PA) and food security. While multispectral unmanned aerial vehicle (UAV) imagery has shown promise in PNC estimation, the optimal feature combination ...
Jing Zhang, Gong Cheng, Shaohui Huang, Junfang Yang, Yunma Yang, Suli Xing, Jingxia Wang, Huimin Yang, Haoliang Nie, Wenfang Yang, Kang Yu, Liangliang Jia   +11 more
doaj   +1 more source

Impact of Alternative Land Management Options on Soil Fertility and Erosion in Uganda [PDF]

Using a data set collected in eight districts of Uganda, this study investigates how investment in soil fertility management (SFM) and conservation practices may affect natural resource outcomes, particularly the extent and level of soil erosion and soil
Birungi, Patrick, Hassan, Rashid M.
core   +1 more source

Understanding soil fertility in organically farmed systems (OF0164) [PDF]

, 2002
This is the final report of the Defra project OF0164. Organic farming aims to create an economically and environmentally sustainable agriculture, with the emphasis placed on self-sustaining biological systems rather than external inputs.
Shepherd, Dr M. A.
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