|Author:||Kar, D. N. ; Ray, M. ; Garnayak, L. M.|
|Book Group Author:||NA|
The effect of moisture stress (imposed by withholding irrigation at early vegetative, flowering, peg penetration, pod initiation, or pod development stage) on the yield of and water use by groundnut cv. Ak-12-24 was studied in Bhubaneswar, Orissa, India, during the rabi season of 1997-98. The highest number of pods and 100-kernel weight were recorded for non-stressed plants The highest shelling percentage obtained with irrigation based on stress day index (six irrigations) and with the control. Plants stressed at the peg penetration stage produced the lowest number of pods per plant and 100-kernel weight, while those stressed at the flowering stage had the lowest shelling percentage. These plants produced the lowest yield. Stress at the early vegetative stage, which had the least effect on yield and yield attributes, shortened the flowering period and induced effective pod-filling. Irrigation based on stress day index had the highest water consumptive use (WCU) and water requirement. WCU and water requirement were lowest when moisture stress was imposed at pod development stage. Water use efficiency was highest in plants stressed at pod development stage and lowest in plants stressed at peg penetration stage. Irrespective of treatment, the extraction of soil moisture decreased with the increase in soil profile depth.
|Pages:||159 - 161|
|Journal:||Annals of Agricultural Research|
crop growth stage, crop yield, flowering date, groundnuts,irrigation, kernels, plant water relations, pods, seed weight, shellingpercentage, soil depth, stress, stress response, water requirements,water stress, water uptake, water use, water use efficiency, yieldcomponents, India, Orissa, Arachis hypogaea, Arachis, Papilionoideae,Fabaceae, Fabales, dicotyledons, angiosperms, Spermatophyta, plants,eukaryotes, South Asia, Asia, Developing Countries, Commonwealth ofNations, India, peanuts, watering, Field Crops (FF005) (New March 2000),Plant Water Relations (FF062), Plant Production (FF100), SoilMorphology, Formation and Classification (JJ400), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management]