Results 11 to 20 of about 147,822 (261)
Conventional, low-input and organic farming systems compared
California Agriculture, 1994 Cover-crop nitrogen supply and weed management were the most important challenges facing low-input and organic farming systems when compared to conventional systems in the first 4 years of the Sustainable Agriculture Farming Systems project at UC Davis ...
S Temple, O Somasco, M Kirk, D Friedman
doaj +3 more sources
Agriculture, 2022 Inappropriate organic fertilizer application may cause serious environmental risks, especially nitrogen (N) and phosphorus (P) losses. To achieve a win–win for high yield and environmental protection in organic agriculture, it was essential to ...
Mingqing Liu +8 more
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Misallocation in the Market for Inputs: Enforcement and the Organization of Production* [PDF]
The Quarterly Journal of Economics, 2020 AbstractThe strength of contract enforcement determines how firms source inputs and organize production. Using microdata on Indian manufacturing plants, we show that production and sourcing decisions appear systematically distorted in states with weaker enforcement.
Boehm, Johannes, Oberfield, Ezra
openaire +2 more sources
Frontiers in Marine Science, 2022 Dissolved organic matter (DOM) serves as the most active and sensitive organic component in the bay, and its biogeochemical characteristics and reactivity are affected by the properties of terrestrial and marine substances significantly.
Yafeng Zhong +7 more
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Transition from conventional to low-input agriculture changes soil fertility and biology
California Agriculture, 1994 Growers converting from conventional to low-input and organic farming systems must rely on organic sources for adequate soil fertility. At the Sustainable Agriculture Farming Systems (SAFS) project at UC Davis, we measured soil ...
Kate Scow +7 more
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Agronomy, 2021 It is estimated that more than 95% of organic agriculture is based on crop cultivars that were bred for the conventional high-input sector. Most selections were made through conventional breeding programs and lack important traits required under organic ...
Ilias D. Avdikos +4 more
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Revista Brasileira de Engenharia Agrícola e Ambiental, 2011 Um experimento foi desenvolvido no período de outubro de 2009 a fevereiro de 2010, em ambiente telado do Departamento de Solos e Engenharia Rural do Centro de Ciências Agrárias da Universidade Federal da Paraíba, Areia, PB, para avaliar a influência da ...
Reinaldo F. Medeiros +5 more
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The Occurrence and Distribution of Oleanane Biomarkers in Crude Oils as an Index [PDF]
Journal of Petroleum Science and Technology, 2021 Oleanane biomarkers are age diagnostic indicators and source of organic matter input in fossil fuels which can unravels the stage of development of a petroleum system in the petroleum generating rock. Representative samples of crude oil obtained from two
Onojake Chukunedum, Selegha Abrakasa
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California Agriculture, 1994 The conversion from conventional to low-input or organic crop production requires changes in pest control tactics. In a 5-year study, abundance of most pests did not change dramatically between conventional and low-input or organically ...
W. Thomas Lanini +3 more
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Effet du zaï amélioré sur la productivité du sorgho en zone sahélienne
VertigO, 2011 Impact of improved zaï on the yield of sorghum in sahelian zone. The present study aims to show that the effect of the organic matter and water management with zaï soil restoration technique, could improve agricultural productions on degraded soils.
Philippe Bayen +4 more
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