Essays about: "ryegrass"

Showing result 21 - 25 of 34 essays containing the word ryegrass.

1. 21. Potential uptake of phosphorus by catch crops in greenhouse conditions and release after freezing-thawing

   University essay from SLU/Dept. of Soil and Environment

   Author : Rafa Abdulhassan Khalaf; [2013]
   Keywords : catch crops; freezing-thawing; phosphorus uptake-release; root morphology;

   Abstract : Catch crops are an important component of cropping systems in Sweden and other Scandinavian countries, but may contribute to phosphorus (P) losses after freezingthawing cycles (FTCs). Eight existing and new catch crop species in Swedish farming were grown in a greenhouse to study potential P uptake and P release from shoots, roots and whole plants after FTCs. READ MORE

3. 22. Effect of botanically diverse pastures on the milk fatty acid profiles in New Zealand dairy cows

   University essay from SLU/Dept. of Animal Nutrition and Management

   Author : Gunilla Ström; [2012]
   Keywords : Dairy cow; Milk fatty acids; CLA; Diverse pastures; Secondary plant metabolites;

   Abstract : Botanically diverse pastures are commonly used in New Zealand to reduce the ruminant environmental impact by reducing the methane production from the rumen digestion. In order to evaluate the effects diverse pasture species have on the milk fatty acid profile seventy-two lactating Friesian-Jersey crossbred dairy cows were used in a randomised block design with two replicates of six treatments. READ MORE

4. 23. An indoor freeze/thaw lysimeter study of phosphorus leaching from soils with four catch crops

   University essay from SLU/Dept. of Soil and Environment

   Author : Matthew Riddle; [2011]
   Keywords : phosphorus; catch crops; lysimeter; freeze thaw; clay; sand; leaching ;

   Abstract : Catch crops have been found to decrease leaching of nitrates into surface and groundwaters, but they also have the potential to increase phosphorus (P) loadings to naturalwaters as well, due to plant cell destruction caused during natural freezing and thawingevents. An indoor lysimeter experiment was carried out using a clay and a sand soil with theapplication of four different plant species: perennial ryegrass cultivar ‘Helmer’ (Loliumperenne L. READ MORE

5. 24. Concentration and offtake of trace elements and macronutrients in Italian ryegrass (Lolium multiflorum Lam.) and spring barley (Hordeum vulgare L.) grown on soils amended with water treatment residual sludge

   University essay from SLU/Dept. of Soil and Environment

   Author : Wilfred Nwanjo Mbah; [2011]
   Keywords : WTR; sludge; barley; ryegrass; soil type; trace elements; yield;

   Abstract : Aluminium sulphate (Al2(SO4)3) is usually added during the drinking water treatment processin order to precipitate organic and inorganic material, resulting in aluminium-based drinkingwater treatment residual sludge (WTR). Since 2003 Swedish law no longer permits WTR tobe deposited in lakes, and there is an interest to explore the possibility to utilize WTR as soilamendment. READ MORE

6. 25. Kortsiktig fosforeffekt av avloppsslam : krukförsök i växthus där järn-, aluminium- respektive kalkfällt slam använts som fosforgödselmedel

   University essay from SLU/Dept. of Soil and Environment

   Author : Sofi Sundin; [2011]
   Keywords : avloppsslam; slamfosfor; fosforgödslingseffekt; krukförsök; Lolium perenne;

   Abstract : The short term effect of phosphorus in sewage sludge was investigated to establish howmuch of this a farmer can grant him- or herself, if using sewage sludge as a phosphorusfertilizer. Possible differences in plant availability between sludge phosphorus precipitatedby iron, aluminum or calcium integrations were studied in a sandy soil at two pH levels. READ MORE