Study of the levels of nitrogen fertilizer and irrigation on grain yield of maize in regional climate astane ashrafieh

摘要

This research was to evaluate the effect of the level of nitrogen fertilizer and irrigation methods and dry corn cultivars (SC 704 and the local number), in Gilan province, city eve of Ashrafieh in 2013 was carried out. A split-split plot experiment in a randomized complete block design with 3 replications. The main factor irrigated and rainfed cultivation methods, sub corn varieties (SC 704 and the local number) sub-sub factor levels of nitrogen fertilizer (400,300,200,100 kg per ha). Results showed between cultivars in ear length, number of rows per year, number of kernels per year, weight of 100 grains, grain weight and yield significant differences in the probability of a specified percentage, indicate a significant difference between the two SC 704 local varieties and varieties. The effect of nitrogen fertilizer on all attributes except harvest index was significant. Interaction between varieties in watering the seed number per row, the number of grains per ear and grain yield showed no significant differences in other traits. As well as for irrigation fertilizer interaction for seed number per row, the number of grains per year, weight of 100 seed weight and seed yield was significant. Interactions between varieties of fertilizer to ear length and grain weight showed no significant difference at the 5% level for the number of kernels per year, grain weight, yield and harvest index showed significant differences in the level of one per cent a. The results showed that the use of nitrogen fertilizer and irrigation in the SC 704 Corn plant will be important to improve yield and agronomic traits. The most important aim of the project to determine the best level of nitrogen fertilizer application and irrigation techniques and drought are two varieties of corn, which can be an effective step towards sustainable agriculture and preserving the environment.