Print ISSN: 2077-5822

Online ISSN: 2618-1479

Keywords : Conventional Subsoiler

The Effect of the Conventional and Modified Subsoilers on the Soil Water Infiltration in Clay Soil During Sun Flower Crop Growth Stages (Helianthus annus L.)

Kawther A. H. Al-Mosawi; Bahaa A. J. A. Kareem

Al-Qadisiyah Journal For Agriculture Sciences, 2017, Volume 7, Issue 1, Pages 28-40
DOI: 10.33794/qjas.2017.123899

A filed experiment has been conducted at college of agriculture research station, Garmit Ali , Basrah university in ( 2014 ) . The soil texture is clay . Three plow types are used namely modifiled subsoiler , conventional subsoiler and moldboard plow . The first two plows (subsoilers) are used at operating depths of 30 , 40 and 50 cm . The moldboard plow is used at operating depth of 25 cm . These plow types are used to study their effect on the soil water infiltration of the soil in after crop harvesting. The crop used in the experiments is sun flower ( Helianthus annus L.) . The following abbrivations are used for the modified and conventional subsoilers operating depths 30 , 40 , and 50 cm , which are they S1D1 , S1D2 , and S1D3 and S2D1 , S2D2 and S2D3 respectively . For the moldboard plow depth of 25 cm MT is used and no tillage treatment (NT) . The control treatment is given (con.) . The filed is divided into three equal area blocks . Each block is divided into nine experimental units . The experimental parameters are randomly distributed on experimental units . The crop seeds are planted on 4/4/2014 . The irrigation is added according to the difficiency in the water level of water evaporation basin . The addition of water is 100% of the measured evaporation value with another 20% as leaching requirement . The crop harvesting date is 4/7/2014 .The results showed :That plowing operation reduced Acumulative infiltration and infilteration rate are higher in the plowed soil compared with unplowed soil (NT) . At the end of season growth S1D3 recorded the highest equmilative and mean infiltration while the lowest values are recorded to MT . The rest of treatments gave medium results.