The effect of Super attractive using on practive and the parts of practice on single cross corn grain 704 at lorestan weather condition

Abstract

Water deficit is one of the most important difficulties, in which happes in dry zone and half dry zones.<br />Water deficit, as the determinative factor, determinates the growing and extension of the plant cover in<br />these areas. Using the supper attractive, may reduce the production in the crops and control the plant<br />cover in face of dry stress and water deficit. In this paper, the effect of supper attractive stockosorb on<br />the irrigation interval, number of irrigation time, content of utilizable water for the one growing<br />interval, efficiency of water use and seed practice in the surface unit and practice elements were<br />studied.<br />In this paper four cares were studised, includig: instance care, full irrigation (in other word 4 to 5<br />days) (T1), under irrigation in which is after the 75% outlet of moisture field capacity(T2), under<br />irrigation by using the supper attractive (T3), and the last care is under irrigation with supper attractive<br />and solution propagation (T4). In irrigation level practises , irrigation for the instance was done when<br />50% of field capacity was outlet. For irrigation deficit practices, 75% discharge of FC moisture was<br />the base of irrigation deficit. More over this study showed that grain practise, number of grain range in<br />corn, biological efficiency, stem diameter, and weight of thousand again in 5% surface were<br />meaningful. Moreover, biggest use of water is belongs to care of T4 and the lowest use belongs to care<br />of T1. And this paper showed that in order to use this supper attractive polymer not only increase<br />function of product efficiency but also increase the function of water using.