Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCE (UNIVERSITY OF TABRIZ)   2007 , Volume 17 , Number 1; Page(s) 39 To 49.
 
Paper: 

EFFECTS OF DIFFERENT PLANTING DATE AND NITROGEN LEVELS ON CORN FORAGE YIELD AND RELEVANT CHARACTERISTICS TO QUALITY (VAR.SC704)

 
 
Author(s):  ASAD POUR SH.*, FAYAZ MOGHADAM A.
 
* DEPARTMENT OF AGRONOMY AND PLANT BREEDING, FACULTY OF AGRICULTURE, UNIVERSITY OF ORUMIYEH, ORUMIYEH IRAN
 
Abstract: 
The effect of planting date and nitrogen levels on corn forage yield and relevant characteristics to quality (Var.SC704) was studied during 2003 at Nazlou Agriculture Research Station, Fac. of Agric Univ. of Orumiyeh, by using of split plot design based on randomized complete blocks with four replications. The treatments composed of nitrogen at four levels (0, 80, 160 & 240 kg/ha) in main plots and three planting dates (12 May, 22 May, 1 June), in subplots. The cob dry matter, leaf weight, stem and leaf-sheath weight, tassel and ear weight, leaf/stem, grain/cob, grain yield, harvest index, ear percentage, crude protein yield of forage, and biological yield were measured. The result showed that planting date and nitrogen level significantly affected the studied traits with the exception of harvest index and leaf steam ratio. Under the empirical conditions of this experiment it appears that first planting date and 240kg of nitrogen use is optimal for production of highest quantity quality of corn.
 
Keyword(s): CORN, FORAGE QUALITY, NITROGEN RATE, PLANTING DATE
 
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