The Role of Nonleguminous Cover Crops in the Efficient Use of Water and Nitrogen

2015 ◽  
pp. 115-127 ◽  
Author(s):  
M. G. Wagger ◽  
D. B. Mengel
Keyword(s):  
Cover Crops

scholarly journals The role of cover crops in irrigated systems: Soil salinity and salt leaching

2012 ◽  
Vol 158 ◽  
pp. 200-207 ◽  
Author(s):  
J.L. Gabriel ◽  
P. Almendros ◽  
C. Hontoria ◽  
M. Quemada
Keyword(s):  
Soil Salinity ◽  
Cover Crops ◽  
Salt Leaching

scholarly journals Short communication. The role of rabbit density and the diversity of weeds in the development of cover crops in olive groves

2015 ◽  
Vol 13 (3) ◽  
pp. e03SC01 ◽  
Author(s):  
José Guerrero-Casado ◽  
Antonio J. Carpio ◽  
Laura M. Prada ◽  
Francisco S. Tortosa
Keyword(s):  
Cover Crops ◽  
Diversity Index ◽  
Effective Means ◽  
Intensive Farming ◽  
Weed Communities ◽  
Weed Diversity ◽  
Olive Groves ◽  
Abundance And Diversity ◽  
The Impact

<p>Cover crops are an effective means to reduce soil erosion and to provide food and shelter for wildlife. However, in areas of intensive farming, which are characterised by the scarcity of weed communities, wild herbivores may focus their grazing on cover crops, which could make their implementation difficult. In this work, we test whether rabbit grazing can prevent the growth of herbaceous cover crops in olive groves in Southern Spain in addition to assessing the role of rabbit abundance and diversity of weeds in the development of cover crops. This question has been addressed by sowing <em>Bromus rubens</em> between the rows of five olive groves in Cordoba province (Spain). We then monitored the surface covered by <em>B. rubens,</em> along with both diversity of weed communities and rabbit abundance. Two rabbit exclusion areas were also placed in each olive grove in order to assess the impact of rabbits on the development of cover crops. Our results showed that the surface occupied by <em>B. rubens</em> was considerably higher in the rabbit exclusion areas (mean 56.8 ± 5.65 %) than in those areas in which they could feed (mean 35.6 ± 4.32 %). The coverage occupied by cover crops was higher in areas with lower rabbit density, although this relationship was modulated by the weed diversity index, since in areas with the same rabbit abundance the coverage was higher in those with a richer weed community. These findings suggest that high rabbit abundances can prevent the development of herbaceous cover crops in olive groves, particularly in areas in which alternative food resources (measured as weed diversity) are scarce.</p>

Role of Cover Crops and Planting Dates for Improved Weed Suppression and Nitrogen Recovery in No till Systems

2019 ◽  
Vol 50 (14) ◽  
pp. 1722-1731 ◽  
Author(s):  
Parisa Akbari ◽  
Stephen J. Herbert ◽  
Masoud Hashemi ◽  
Allen V. Barker ◽  
Omid Reza Zandvakili
Keyword(s):  
Cover Crops ◽  
Weed Suppression ◽  
Nitrogen Recovery ◽  
Planting Dates ◽  
No Till

Cover Crops

2017 ◽  
pp. 257-281 ◽  
Author(s):  
Vladan Ugrenović ◽  
Vladimir Filipović
Keyword(s):  
Organic Matter ◽  
Organic Farming ◽  
Soil Quality ◽  
Cover Crops ◽  
Farming Systems ◽  
Crop Rotations ◽  
Multiple Role ◽  
Pests And Diseases ◽  
Organic Farming Systems

The use of cover crops is widespread practice in organic farming systems. Cover crops can be defined as crops that are usually not grown commercially, and can have a multiple role in crop rotations. The benefit of cover crops has been known since long. Legumes are used as biological fixer of nitrogen for the next crop, and are established during periods when the soil is without major crops in order to reduce erosion. In recent years, the role of cover crops has been extended to the biocontrol of weeds, pests and diseases, as well as to the overall improvement of soil quality by increasing organic matter, encouraging the circulation of nutrients and reducing soil compaction. At the same time, their use tends to reduce costs and even create new sources of income on the farm.

scholarly journals Considerations for Unharvested Plant Potassium

2020 ◽  
pp. 147-162
Author(s):  
Ciro A. Rosolem ◽  
Antonio P. Mallarino ◽  
Thiago A. R. Nogueira
Keyword(s):  
Cover Crops ◽  
Crop Production ◽  
Organic Amendments ◽  
Crop Rotations ◽  
Exchangeable K ◽  
Rooting Zone ◽  
Weak Complexes ◽  
Fertilizer Recommendations ◽  
K Fertilizer

AbstractPotassium (K) is found in plants as a free ion or in weak complexes. It is easily released from living or decomposing tissues, and it should be considered in fertilization programs. Several factors affect K cycling in agroecosystems, including soil and fertilizer K contributions, plant K content and exports, mineralization rates from residues, soil chemical reactions, rainfall, and time. Soil K+ ions can be leached, remain as exchangeable K, or migrate to non-exchangeable forms. Crop rotations that include vigorous, deep-rooted cover crops capable of exploring non-exchangeable K in soil are an effective strategy for recycling K and can prevent leaching below the rooting zone in light-textured soils. The amount of K released by cover crops depends on biomass production. Potassium recycled with non-harvested components of crops also varies greatly. Research with maize, soybean, and wheat has shown that 50–60% of K accumulated in vegetative tissues is released within 40–45 days. A better understanding of K cycling would greatly improve the efficacy of K management for crop production. When studying K cycling in agricultural systems, it is important to consider: (1) K addition from fertilizers and organic amendments; (2) K left in residues; (3) K partitioning differences among species; (4) soil texture; (5) soil pools that act as temporary sources or sinks for K. In this chapter, the role of cash and cover crops and organic residues on K cycling are explored to better understand how these factors could be integrated into making K fertilizer recommendations.

scholarly journals Role of Different Cover Crops on DTPA-Extractable Micronutrients in an Apricot Orchard

2019 ◽  
Vol 7 (5) ◽  
pp. 698 ◽  
Author(s):  
Zeynep Demir ◽  
Nihat Tursun ◽  
Doğan Işık
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Soil Depth ◽  
Cropping Systems ◽  
Control Groups ◽  
Vicia Villosa ◽  
Sustainable Soil Management ◽  
Fagopyrum Esculentum Moench ◽  
Extractable Micronutrients

This study was conducted to compare the effect of different cover crop treatments on DTPA-extractable micronutrients (Fe, Mn, Zn, Cu) and soil pH in an apricot orchard with clay texture located in Malatya province of Turkey. For this purpose, 5 different experimental groups (Vicia villosa Roth (VV), Vicia pannonica Crantz (VP), Vicia pannonica Crantz and Tritikale mixture (70% + 30%, respectively) (VPT), Phacelia tanacetifolia Benth (PT), Fagopyrum esculentum Moench (FE)) and 3 control groups (mechanically cultivated (MC), herbicide treatment (HC) and bare control plot (BC)) were used in the apricot orchards. The soils were sampled from 0–20 cm and 20-40 cm depths in each plot for soil analyses. According to the obtained results, while cover crop treatments reduced pH values of soils according to the bare control, the cover crops increased the Fe, Mn and Zn contents of soils in the 0-20 cm soil depth. The highest Ext-Fe, Mn and Zn contents were obtained in the VV (14.83mg kg-1, 8.42 mg kg-1, 1.03 mg kg-1, respectively) at the 0-20 cm soil depth. As compared to bare control, highest percent increases in Fe, Mn and Zn contents were determined in the VV 27.73%, 31.69% and 37.54%, respectively. The greatest significant negative correlations in the VV treatment were observed between pH and Fe (-0.985**), between pH and Mn (-0.945**) and between pH and Zn (-0.764*). The greatest significant negative correlations in the VP treatment were observed between pH and Fe (-0.948**), between pH and Mn (-0.928**) and between pH and Zn (-0.722*). It was concluded based on current findings that cover crops, especially Vicia villosa Roth and Vicia pannonica Crantz could be incorporated into cropping systems to improve micronutrients and to provide a sustainable soil management.

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