Maize yield as affected by fertilizer split doses and different application methods under agroclimatic conditions of northern areas of Pakistan.

摘要

Maize field experiment was conducted to evaluate the relative fertilizer use efficiency of different fertilizer application methods and their split doses at research farm of KARINA during kharif 2004. Split plot (experimental design) with three replications was used for these studies. Three methods of fertilizer application i.e. B1 (Broad cast), B2 (Band placement) and B3 (Side dressing) were applied in the main plot whereas four split doses viz S1 (Single dose or Control), S2 (Two splits), S3 (Three splits) and S4 (Four splits) were kept in sub plots. Fertilizers doses of 120 kg N ha-1, 90 kg P2O5 ha-1 and 75 kg K2O ha-1 were used. The results showed that fertilizer application by side dressing in maize crop increased the grain and dry matter yield significantly than the broadcast and band placement methods. The maximum grain and dry matter yield of 3728.62 and 8221 kg ha-1 was recorded in side dressing method. Fertilizer three split doses resulted in highest agronomic efficiency as compared to control i.e. no split, two splits and four splits. Data also revealed non significant interaction among the different treatment means..