EFFECT OF WATER LOGGING ON SOME MORPHOLOGICAL FEATURES AND YIELD ATTRIBUTES OF MUNGREAN Vigna radiata (1.) Wilczek.

Abstract

The experiment was conducted in the field laboratoiy of .Sher-e-EIangla Agricultural University dining the period from September to December 2010 to study the effect of water logging on reproductive behavior and yield attributes of mungbean. The variety BARI mung-3 and BARI mung-4 was used as the test crops. Consequently two experiments were conducted to find out the effect of water logging on sonic morphological features and yield attributes of mungbean. Experiment-I: Effect of Water Logging on Reproductive Behavior and Yield Attributes of Mungbean Sown at 05 September, 2010. Experiment-lI: Effect of Water Logging on Reproductive Behavior and Yield i\ttributes of Mungbean Sown at 16 September. 2010. Both the experiment comprised of two factors: Factors A: Munghean variety: i) V 1 - BARI irntng-3; ii) V,= BARI mung-4; Factor B: Water logging (4 levels): i) IM= Control (No water logging): ii) L Water logging for 3 days after 10 DAS: 1,2= Water logging for 4 days after 20 DAS and L= Water logging for 2 days after 40 DAS. The two factors experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Experiment-I, in case of variety, the highest seed yield (1.25 lJha) was recorded from V% whereas the lowest (1.13 tlha) from V1. The highest survival percentage (93.33°/s) was recorded from V2, whereas the lowest (92.50%) from \'. In case of water logging condition the highest seed yield (1.41 t!ha) was observed from L0 while the lowest (1.00 t/ha) From L3. The highest survival percentage (98.33 t'lia) was observed from L. while the lowest (85.00%) from 1-1 . In case of interaction effect the highest seed yield (1.42 VIta) from V2 L0. while the lowest (0.92 tlha) from V2L3. The highest survival percentage (100.00%) was observed From V2L0, while the lowest (83.33%) from V2 L1 . Experiment-Il, in case of variety the maximum number of pods per plant (53.69) was recorded from V2, whereas the minimum number (50.69) from V 1 . The highest seed yield (1.23 t/ha) was recorded from V2, whereas the lowest (1. tO tfha) from V 1 . The highest survival percentage (90.00%) was recorded from V 2, whereas the lowest (99.17%) from V 1 . In case of water logging the maximum number of pods per plant (55.92) was observed from L again the minimum (49.57) from L3. The highest seed yield (1.38 t'ha) was observed from L0 while the lowest yield (0.98 tlha) from L3. The highest survival percentage (95.00 t/ha) was observed from L0, while the lowest survival (81.67%) from L 1 . In case of interaction effect of variety and water logging the maximum number of pods per plant (56.13) was observed from V2 L,, while the minimum (47.53) front V1 1.3. The highest seed yield (1.39 VIta) was observed from V2L0. while the lowest (0.89 VIta) from V 1 L3. The highest survival percentage (96.67%) was observed from V 2L0. while the lowest (80.00%) from V21,1 . The lowest survival percentages were found in the early (lO DAS) water logging conditions and the lowest yield was obtained while water logged at 40 DAS (flowering stage) showing vulnerability at reproductive stage. BARI mung 4 provided better yield in all conditions than BARI niung 3.