Improving resource-use-efficiency with no-till and crop diversity

Anderson, Randy L.

doi:10.1017/s1742170516000090

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…Crop rotation is among the most useful tools in order to control weeds [1] and contribute to Integrated Pest Management (IPM). It allows varying the management of fields, creating an unstable and inhospitable environment that prevents weeds from proliferating [1] as well as disrupting weed population dynamics [2]. This is of special interest in organic farming, where no chemicals can be applied for their control.…”

Section: Introductionmentioning

confidence: 99%

Camelina as a Rotation Crop for Weed Control in Organic Farming in a Semiarid Mediterranean Climate

Royo‐Esnal

Valencia-Gredilla

2018

Agriculture

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Crop rotation in winter cereals in semiarid Mediterranean climates is highly desirable to prevent weed infestations, but the climatic conditions make it difficult to implement alternative crops to winter cereals. Camelina (Camelina sativa (L.) Crantz) is an interesting option, as it is able to produce profitable yields thanks to its tolerance to cold and drought. In this work, three autumn–winter sowing dates (SD1, October; SD2, December; SD3, January) and two sowing rates (R1, 8 kg ha–1; R2, 11 kg ha–1) were chosen to evaluate the effectiveness of these cultural methods to control weeds over three seasons, and to determine effects on camelina seed yield. Results showed that a significant reduction of weed coverage was obtained by delaying the sowing date. Sowing rates did not show differences in weed coverage. In contrast, no apparent yield penalty was observed among sowing dates and rates. These results show that the introduction of camelina as a rotational crop in semiarid Mediterranean climates is a feasible option for helping to suppress winter weeds, as well as to provide productive seed yield in these climatic conditions.

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Section: Introductionmentioning

confidence: 99%

Camelina as a Rotation Crop for Weed Control in Organic Farming in a Semiarid Mediterranean Climate

Royo‐Esnal

Valencia-Gredilla

2018

Agriculture

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“…Moreover, conservation agriculture has other benefits such as stimulating beneficial microfauna activity (Zhang et al, 2015), achieving more carbon sequestration than conventional systems (Buchi et al, 2017) and, additionally, may save money and time by reducing tillage operations prior to sowing crops (Chauhan et al, 2012). Nitrogen fertilizer and fuel were found to be the inputs with the highest reduction levels in the USA (Anderson, 2017). However, reduced tillage also involves some disadvantages, such as higher surface compaction that can decrease water infiltration, new weed control problems, and major initial purchases of equipment for direct sowing, spraying weeds, and harvesting crops.…”

Section: Introductionmentioning

confidence: 99%

Effects of Reduced and Conventional Tillage on Weed Communities: Results of a Long-Term Experiment in Southwestern Spain

et al. 2019

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An important drawback in adopting minimum tillage (MT) and no-tillage (NT) techniques is the frequently observed weed shift promoting adapted species and achieving poorer weed control. These changes can be detected best with long-term experiments, and results might differ depending on soil characteristics and the local flora. The objectives of this work were to evaluate the effect of reduced tillage on weed seed distribution in the soil profile and to identify possible consequences on weed diversity on a long-term experiment maintained during 24 years in Seville (Spain) with three tillage systems: NT, MT and conventional tillage (CT) including moldboard plow on a vertisol. For this purpose, soil seedbanks at 0-8 cm and 8-16 cm depths were enumerated in autumn 2005 and in-field emerged plants in autumn 2005 and winter 2006. Shannon diversity index (H) and evenness (J’) were calculated for seedbank and aboveground weed communities. Total weed seed density was highest for NT and lowest for CT. Some big-seeded species, such as Chrozophora tinctorea L., showed highest seed density in CT. NT increased the relative density of Amaranthus blitoides S. Watson seeds in the seedbank and the abundance of emerged plants of Malva parviflora L., Anagallis arvensis L. and Picris echioides L. Overall, MT led to a less diverse seedbank in the 0-8 cm depth of soil than CT. The frequent drought-induced deep fractures in the expandable clay soil caused natural tillage, which probably resulted in fewer differences in weed seed and seedling densities among tillage treatments compared to what might be expected in other soil types.

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“…As the amount of nutrients in the cover is not adequate (mainly N) for the decomposition process, there is a greater immobilization of nutrients which reduces the availability of some nutrients for the crops (Mangaravite et al, 2014, Anderson, 2017.…”

Section: Introductionmentioning

confidence: 99%

Chemical attributes of agricultural soil after the cultivation of cover crops

Sousa¹,

Medeiros²,

Rosa³

et al. 2017

Aust J Crop Sci

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The use of cover crops is a strategy to maintain the productive capacity of agricultural soils. The increase of organic carbon content, nutrient cycling and, consequently, the increase in soil fertility are some of the greatest benefits. This study evaluated the chemical attributes of the soil after the use of cover crops species in the Cerrado region of Piaui. The experiment was carried out from January 2015 to July 2016. It was performed in a completely randomized block design with eleven treatments and four replicates. ), potential acidity (H + Al), soil organic carbon (OC), the saturation of bases (V%), saturation by aluminum (m%) and effective CEC were measured. Fifteen months after their establishment, cover crops positively influenced the levels of P, K and OC with no changes in the other chemical properties. The OC contents were higher with the use of C. cajan -cv. 'fava larga', brachiaria and C. ochroleuca + millet, mainly in the topsoil. C. espectabilis, spontaneous vegetation, M. aterrima, brachiaria and C. ochroleuca were the most efficient in K cycling.

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Improving resource-use-efficiency with no-till and crop diversity

Cited by 5 publications

References 24 publications

Camelina as a Rotation Crop for Weed Control in Organic Farming in a Semiarid Mediterranean Climate

Camelina as a Rotation Crop for Weed Control in Organic Farming in a Semiarid Mediterranean Climate

Effects of Reduced and Conventional Tillage on Weed Communities: Results of a Long-Term Experiment in Southwestern Spain

Chemical attributes of agricultural soil after the cultivation of cover crops

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