The effect of incorporating concentrated rice straw, Ammonia and protein with different tillage Systems on soil properties and crop yield

Abstract

This experiment was carried out at Kufa technical institute, Al-Najafgovernorate on a clay soil to study the effect of incorporating concentrated ricestraw with (Ammonia and Protein) using different tillage systems on seed-bedpenetration resistance, straw distribution, seedling rate and crop yield under fieldconditions. The obtained results indicated that conventional and conservationtillage treatments (Conv. S. + Straw, Cons. S. + Straw) were more effective forincorporating the added rice straw stalks into the tested soil. It was found that 43% and 35 % of the added rice straw were incorporated at depth of 10 – 20 cmwhen the conventional and conservation tillage were used respectively whereasthe remaining rice straw was incorporated randomly at depth 0 – 10 cm in theboth tillage systems. The data is also indicated that the conservation tillagetreatment with straw (Cons. S. + Straw) gave lower soil penetration than othertreatments and the results was closed to minimum tillage. On the other hand itgave from where germination and seedling emergence index has higher totaly i e l d c o m p a r e d w i t h o t h e r t i l l a g e t r e a t m e n t s .