Maximum yield of corn for grain and silage under intensive cultural conditions
1988
Bar-Tsur, A. (Ministry of Agriculture, Newe Ya'ar (Israel). Agriculture Research Organization, Dept. of Field Crops) | Kafkafi, U. (Hebrew Univ., Rehovot (Israel))
The impact of light interception, CO2 fixation, foliar fertilization and intensive irrigation of corn for grain and silage was investigated in 1986 at the Newe Ya'ar Experiment Station under drip irrigation. Intensive irrigation increased grain and total dry matter yield, the highest yield being achieved by daily irrigation with a dripper line along the row. Grain yield was significantly affected by foliar fertilization with nitrogen and micronutrients during silking and ear development. Foliar fertilization by Uran (Nitrogen) and Avazon (Nitrogen + Zn) significantly increased yield, whereas Koratin (Micronutrients) had no impact on final yield. Increased light interception of the canopy by bending or cutting a side row during ear development, contributed to increased photosynthetic rate of the ear leaf and lower leaves, whereas upper leaves were n1204ot affected. The increase in leaf photosynthesis as a result of cutting or bending the side rows was accompanied by grain yield increase. The increase in grain yield by intensive irrigation, foliar fertilization and improved light interception was due mainly to additional accumulation of dry matter in the ears. The increased yield of the ears was not achieved at the expense of a reduction in dry matter which had already accumulated in the vegetative p
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