Effect of drought stress and methanol on soybean (Williams) seed yield, oil and protein percentage

Subject Areas : crop production

Received: 2010-12-14 Accepted : 2012-05-04 Published : 2012-08-12

Keywords: Drought stress, Methanol, Percentage and Protein yield, Percentage and Oil yield, Soybean.,

Abstract :

Field experiment was conducted to study the interaction methanol foliar application and drought stress on soybean yield in 2008 in Maahdasht (Karaj, Iran). Three levels of irrigation (after 40, 60 and 70% depletion of available water) and 4 doses of methanol (0, 14, 21 and 28% of percentage volume of methanol to 0.2% glycine in each solution factor in a split plot arrange of treatment with four replication. 3 times spray was applied by time period of 14 days on plants foliage. Grain yield, oil and protein percentage were measured. Results of the experiment indicated that there was a significant difference between irrigation levels, methanol doses and interaction effects. Treatment of T1M3 (40% available water and 21% of methanol) had the highest yield with the 2890.5 kg/ha grain. Treatment T3M1 (70% available water and 14% of methanol) with 1384.5 kg/ha grain was at the least of yield level. The most protein and oil yield with 1112.11 and 639.06 kg/ha was for treatment of T1M3 and least protein and oil yield with 473.59 and 262.88 kg/ha was for treatment T3M1.

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