Nitrogen

Abstract

The efficiency of nitrogen fertilization in wheat was studied without and with application of the herbicide "Triallate," which is specifically indicated for the control of the weed "wild oat" (Avena sterilis L.), which grows in the company of wheat in the field. The results show the competitiveness of the weed with regard to nitrogen in the wheat crop, and how the levels of this N in wheat are affected in its different stages of development.The use of the herbicide, despite the fact that it only controlled 52% of the wild oat plants, has greatly improved N nutrition of wheat, as well as its development and productivity to a noticeable degree, and even the total protein production per cultivated area. The sensitivity of the wheat plant to nutritional variations in relation with nitrogen is better proved for its levels in NO 3 -than total N.In spring drought conditions, the development of the wheat plant improves more than its yield by the use of N fertilizer and herbicide.