Fertigation and Controlled Strip Cover by Weeds in Ip Apple Orchards

Hornig, R.; Bünemann, G.

doi:10.17660/actahortic.1993.335.6

Cited by 7 publications

(6 citation statements)

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“…Till May 20 when the grass was cut for the first time, the precipitation since the start of growth season was only 9.3 mm, therefore in the fertigation and mulch treatments where the soil moisture conditions were presumably better the grass biomass was higher. These results comply with the results of other researchers showing that plant biomass significantly increases when fertigation is used [10].…”

Section: Fig 2 Content Of P 2 O 5 In Grass Dry Matter At Different Distances From the Tree Strip Depending On Moisture Treatment And Cut supporting

confidence: 93%

Phosphorus Removal With Grass In An Apple Orchard Under Influence Of Mulch And Irrigation

Surikova

Kārkliņš

2015

ETR

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Phosphorus leaching from intensive agriculture systems is one of major contributors responsible for pollution of ground-water and surface water bodies. The aim of this study was to determine the content of phosphorus in orchard lawn for reduction of phosphorus fertilizer application and to include the phosphorus from mown grass into P balance and turnover calculation. The investigation was done at the Latvia State Institute of Fruit–Growing in 2009. Three treatments were compared: control, mulch and fertigation. Inter-row strips were covered by grass vegetation. Grass samples were collected at the time of grass mowing. The removal of phosphorus was calculated as kilograms per hectare area. The concentration of phosphorus in the lawn and the height of grass growth were significantly influenced by the mowing time and the soil moisture treatment. These results can be a base for further studies of phosphorus turnover in an orchard, as well as for fertilizer planning and management.

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Section: Fig 2 Content Of P 2 O 5 In Grass Dry Matter At Different Distances From the Tree Strip Depending On Moisture Treatment And Cut supporting

confidence: 93%

Phosphorus Removal With Grass In An Apple Orchard Under Influence Of Mulch And Irrigation

Surikova

Kārkliņš

2015

ETR

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“…In rainfed orchards the competition for water might be more important considering the long summer period of the Mediterranean region Rodrigues et al, 2011a). However, a shortfall in production has also been recorded in irrigated orchards managed under cover cropping (Hornig & Bünemann, 1993;Lipecki & Berbeç, 1997;Gucci et al, 2012), which may mean that the competition for nutrients could also be important. In a vineyard with a cover crop introduced in the interrows, Celette et al (2008) found that the root system of the grapevine was forced to explore deeper layers of the soil due to the presence of the root system of the cover crop that had been established first during the winter resting period of the grapevine.…”

Section: Discussionmentioning

confidence: 99%

“…Cover crops, however, compete for resources with the trees, which can lead to a reduction in crop productivity (Hornig & Bünemann, 1993;Lipecki & Berbeç, 1997;Silvestri et al, 1999;Gucci et al, 2012). Few studies have compared grazed with ungrazed plots in perennial tree crops.…”

Section: Introductionmentioning

confidence: 99%

Soil management in rainfed olive orchards may result in conflicting effects on olive production and soil fertility

Ferreira

Arrobas

Claro

et al. 2013

Span. j. agric. res.

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The adoption of a sustainable soil management system is essential for the steep slopes and low fertility soils still supporting rainfed olive orchards in the Mediterranean basin. The effect of the soil management on olive yield, tree nutritional status and soil fertility was studied in a rainfed olive orchard located in NE Portugal that had been managed since its earliest days as a sheep-walk. In 2001, three different soil management systems were established: Sheep-walk, in which the vegetation was managed with a flock of sheep; Tillage, where the vegetation was controlled by conventional tillage; and Glyphosate, where a glyphosate-based herbicide was applied. The soil management systems had a pronounced effect on olive yield. The accumulated olive yields between 2002 and 2011 were 187.2, 142.9 and 89.5 kg tree-1, respectively in the Glyphosate, Tillage and Sheep-walk treatments. However, the effect of soil management on tree nutritional status was not so clear. On the other hand, the pools of organic carbon and N in the soil, and also the soil available N and phosphorus (P), were found to be less in the Glyphosate and Tillage treatments in comparison with the Sheep-walk. In these soils, N appeared as a much more limiting factor for crop growth than P. In rainfed orchards, the tolerance to herbaceous vegetation appears to be a determining factor in sustainability, which regulates annual crop yields and soil fertility. The higher the tolerance to herbaceous species, the lower the olive yields, but the better are the soil fertility parameters.

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“…Tas, vai zālāja sakņu konkurence nopietni iedarbosies uz koku, ir atkarīgs no vairākiem faktoriem: no zālaugu sugas, augļu koku vecuma, potcelma, zālāja sakņu attāluma no koka saknēm u.c. faktoriem [8]. Vairāki zinātnieki [8; 9; 10] jau pagājušā gadsimta sākumā pierādījuši, ka nekontrolēta zālāja augšana negatīvi ietekmē gan augļu koku augšanu, gan ražas kvantitāti un kvalitāti.…”

Section: Ievadsunclassified

Competition Between Apple-Trees and Grass in the Orchard

Surikova

Kārkiņš

2015

ETR

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The objective of the research was to study the possible competition between roots of apple-trees and grass under the influence of applied moisture regulation methods. No analogical research has been performed in Latvia so far. The investigation was done on the base of an existing trial planted in 1997 with cultivar `Melba` at 1.5 × 4 m planting distances. Three different treatments of soil moisture management were compared: control, sawdust mulch and fertigation. Inter-row strips were covered by grass vegetation (Lolium perenne and Poa pratensis, in proportion 1:3). The horizontal and vertical spacing of the main root mass was determined, as well as the distance and depth of the spread of grass roots from the inter- row strip into the tree strip. The results of the research show that mulching and fertigation have significant influence on the horizontal and vertical root spacing of grass grown in the inter-row strip, which can be an evidence of competition between apple-trees and grass for water and nutrients.

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Fertigation and Controlled Strip Cover by Weeds in Ip Apple Orchards

Cited by 7 publications

References 0 publications

Phosphorus Removal With Grass In An Apple Orchard Under Influence Of Mulch And Irrigation

Phosphorus Removal With Grass In An Apple Orchard Under Influence Of Mulch And Irrigation

Soil management in rainfed olive orchards may result in conflicting effects on olive production and soil fertility

Competition Between Apple-Trees and Grass in the Orchard

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