Alley cropping on an Ultisol in subhumid Benin. Part 2: Changes in crop physiology and tree crop competition

1996 ◽  
Vol 34 (1) ◽  
pp. 13-25 ◽  
Author(s):  
D. E. Leihner ◽  
R. Ernst-Schaeben ◽  
T. P. Akondé ◽  
N. Steinmüller
Keyword(s):  
Alley Cropping ◽  
Crop Physiology ◽  
Tree Crop ◽  
Crop Competition

Tree crop physiology

1989 ◽  
Vol 26 (2) ◽  
pp. 153
Author(s):  
Melvin G.R. Cannell
Keyword(s):  
Crop Physiology ◽  
Tree Crop

Regional differences in tree - crop competition due to soil, climate and management

2010 ◽  
Vol 61 (9) ◽  
pp. 763 ◽  
Author(s):  
Neil I. Huth ◽  
Michael J. Robertson ◽  
Perry L. Poulton
Keyword(s):  
Soil Moisture ◽  
Regional Differences ◽  
Crop Production ◽  
Climatic Conditions ◽  
Management Options ◽  
Agronomic Practices ◽  
Tree Crop ◽  
Soil Climate ◽  
Production Losses ◽  
Crop Competition

Large areas of trees are being planted in Australian agricultural lands for a range of environmental, ecological and economic reasons. In the medium to low rainfall zones, these plantings can negatively impact upon adjacent agricultural production through competition for soil moisture. The nature of the tree–crop competition zone and the means of managing it have been studied in the main southern cropping zones. However, the differences in soil, climate and agronomic systems in Australia’s northern dryland cropping zones could lead to differences in the competition processes and the management options needed to minimise them. In this study, the competition for soil moisture and resultant impacts on crop production were studied for a Eucalyptus argophloia windbreak on a farm near Warra, Queensland (26.93°S, 150.93°E). The results indicate well defined inner and outer competition zones, the extents of which agree with those found elsewhere in Australia and overseas. However, while the extent of the competition is comparable with other regions, local agronomic practices developed for variable climatic conditions and deep clay soils allow trees to extract soil water stored during fallow periods resulting in relatively higher production losses.

Impact of tree coppicing on tree-crop competition in parkland and alley farming systems in semiarid Burkina Faso

1995 ◽  
Vol 30 (3) ◽  
pp. 363-378 ◽  
Author(s):  
Y. Tilander ◽  
G. Ouedraogo ◽  
F. Yougma
Keyword(s):  
Burkina Faso ◽  
Farming Systems ◽  
Alley Farming ◽  
Tree Crop ◽  
Crop Competition

Productivity at the tree-crop interface of a young willow-grassland alley cropping system

2016 ◽  
Vol 92 (1) ◽  
pp. 71-83 ◽  
Author(s):  
Miriam Ehret ◽  
Rüdiger Graß ◽  
Michael Wachendorf
Keyword(s):  
Alley Cropping ◽  
Cropping System ◽  
Tree Crop

The economics of managing tree - crop competition in windbreak and alley systems

2005 ◽  
Vol 45 (11) ◽  
pp. 1403 ◽  
Author(s):  
R. Sudmeyer ◽  
F. Flugge
Keyword(s):  
Tree Growth ◽  
Management Strategies ◽  
Economic Value ◽  
Agroforestry Systems ◽  
Agricultural Landscapes ◽  
Root Pruning ◽  
Economic Returns ◽  
Tree Roots ◽  
Tree Crop ◽  
Crop Competition

Re-introducing trees and shrubs into agricultural landscapes as agroforestry systems establishes a tension between long-term objectives, such as increasing shelter, water use, nature conservation and harvesting tree products, and the short-term objective of maximising crop and pasture profitability. This paper describes the growth of crops, pastures and trees at the tree–crop interface in agroforestry systems and the economic returns from alley farming and windbreak systems using various tree–crop competition management strategies in the Esperance region of Western Australia. Severing lateral tree roots (root-pruning), harvesting mallees and allowing them to coppice, or thinning trees for sawlog regimes increased the yield of crops and pastures in the competition zone. In some instances, these increases were significant: root-pruning increased the annual return from crops grown in the competition zone of Pinus radiata by up to $548/km of the tree line at 1 site. Conversely, root-pruning reduced tree growth by 14–43% across all sites. Therefore, where trees provide benefits, such as shelter from damaging winds, the benefits of reduced tree–crop competition may not offset the consequent reduction in rate of tree growth. For mallee–crop alley systems on agriculturally productive soils, mallee growth rates must be high enough to compensate for crop losses in the competition zone. On less agriculturally productive soils, block-planting mallees may be more profitable than alley systems or crops without competition (sole-crops). This research has shown that competition management strategies can be used to manipulate the relative productivity of trees, crops and pasture at the tree–agriculture interface. The use of these strategies will depend on the relative economic value of tree and crop products and the value placed on other tree benefits, such as shelter and reduced groundwater recharge.

Weed Management in Small Grains Harvested for Grain

EDIS ◽  
2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
Jason Ferrell ◽  
Gregory MacDonald ◽  
Pratap Devkota
Keyword(s):  
Weed Control ◽  
Weed Management ◽  
Chemical Control ◽  
Management Practices ◽  
Good Management ◽  
Small Grains ◽  
Crop Competition

Successful weed control in small grains involves using good management practices in all phases of production. In Florida, winter weeds compete with small grains for moisture, nutrients, and light, with the greatest amount of competition occurring during the first six to eight weeks after planting. Weeds also cause harvest problems the following spring when the small grain is mature. This 4-page publication discusses crop competition, knowing your weeds, and chemical control. Written by J. A. Ferrell, G. E. MacDonald, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised May 2020.

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