Effect of Drip Irrigation on Growth, Physiology, Yield and Water Use of Rice

Abstract

The field experiment was conducted to investigate the effect of drip irrigation treatments such as three lateral distances (0.6 m, 0.8 m or 1.0 m lateral distance) on growth parameters physiological characters, yield and water use of rice under two discharge rates drippers (0.6 or 1.0 litre per hour emitters). Among the lateral distances, 0.8 m lateral distance adjudged as optimum spacing for its better performance in growth, physiological and yield attributes than rest of the lateral distances. Between two-discharge rates, 1.0 lph drippers out performed 0.6 lph drippers in grain yield. Interactively, laterals spaced at 0.8 m with 1.0 lph drippers exhibited better performance by way of growth parameters (such as plant height, tiller density, root biomass, total dry matter accumulation), physiological attributes (such as  w , Chlorophyll content, Catalase activity and Malondialdehyde content), yield and its components (such as productive tillers, spikelet numbers, filled grain percentage, Harvest Index) along with water productivity. Drip irrigation confirms to increase in water productivity in the present study with water saving of 27.4% over the conventional aerobic rice cultivation. Enhanced physiological activities showed increased growth and yield in rice under 0.8 m lateral distance drip irrigation which is a viable tool for balanced source sink relation. Our results indicated that the lateral spacing of 0.8 m with 1.0 lph drippers is best for rice cultivation in enhancing the growth, physiology, grain yield and water productivity.

Influence of Drip Irrigation and Fertigation Levels on Physiological Characters and Yield of Aerobic Rice (Oryza sativa L.)

“…This favorable condition helps protect the pigment system by minimizing photo inhibition caused by excessive energy dissipation. Enhanced chlorophyll synthesis with nutrient supplied through drip fertigation and reduced leaf chlorophyllase activity led to higher chlorophyll content (Parthasarathi et al, 2017). Stress fewer conditions prevailed during the growth period of rice must have increased the chlorophyll content there by increased greenness owing higher chlorophyll content.…”

Revolutionizing Rice Farming: Maximizing Yield with Minimal Water to Sustain the Hungry Planet

“…Similarly, the amount of water applied should be sufficient to replenish the soil moisture deficit and bring the soil moisture content to the upper limit of the desired range. The desired range depends on the soil type and can range from 60 to 80% of field capacity [38].…”

Microirrigation and establishment methods for water use studies, fodder yields and postharvest available nutrients on Bajranapier hybrid grass [CO (BN) 5]

“…Parthasarathi et al (2016), who stated that surface drip irrigation resulted in higher yield and water productivity by effective utilization of waterin rice. Wang et alRehman et al (2015) in rice further expressed that a higher root volume improved the uptake of water and nutrients, thus increasing the yield and thereby water productivity.…”