Promotional Effect of Water Soluble Fertilizers on Growth and Yield of Lowland Rice

Kaleeswari R.K,Vasanthi D,Thavaprakaash N,Amirtham D,Bharaanisri C

doi:10.29321/maj.2020.000365

Abstract

The present study aimed to study the effect of foliar nutrition of water-solublefertilizers for enhancing yield and quality of rice during Kharif-2019 in clayloam soils of wetland farms, TNAU, Coimbatore. The experiment consisted ofeleven treatments that include- 100% RDF combined with foliar feeding ofcommercially available 19:19:19 @ 1% and 2%, TNAU WSF 19:19:19 @ 1%and 2%, TNAU Liquid Multi Micronutrient @ 1% either alone or in combinationdepending upon the treatments and absolute control. The experimentwas laid out in a randomized block design (RBD) with eleven treatmentsreplicated thrice using CO-51 rice as a test crop. The results revealed thatfoliar feeding of rice crop with different water-soluble fertilizers had a markedpromotional effect on growth and yield of rice. Among the water-solublefertilizers evaluated, foliar spray of TNAU water-soluble fertilizers 19:19:19@ 2% + TNAU Liquid Multi Micronutrient @ 1% (T10) concentration at activetillering, panicle initiation, 50% flowering and harvest stage along with arecommended dose of fertilizers recorded the maximum growth (plant height(45.8, 81.2, 93.5 and 105.6 cm), chlorophyll as SPAD value (45.7, 46.8,48.6 and 44.5) and LAI (3.01, 8.10, 6.72 and 3.92)) and yield attributes(number of panicles m-2 (352), number of grains panicle-1 (198) and numberof filled grains panicle-1 (180) and the maximum grain and straw yield of6233 kg ha-1 and 7730 kg ha-1 respectively. The promotional effect wasto the tune of 113.5 percent in grain and 79.8 percent in straw yield overcontrol. Concerning normal practice, it was a 19.7 percent increase in grainyield, and a 5.2 percent increase in straw yield was observed.

Highlights

Cereals are the most important sources of food and nutrients in both developed and developing countries
Rice has the total harvested area of approximately 158 million hectares and production of more than 700 million tonnes annually (470 million tonnes of milled rice) (Ricepedia and Irri, 2018).In recent days, there is a slowdown in the rice area and yield
Irrespective of treatments, common dosage of fertilizer based on STCR recommendation for the yield target of 8 t ha-1 was applied to all the plots except absolute control (T11)

Summary

Introduction

Cereals are the most important sources of food and nutrients in both developed and developing countries. Rice (Oryza sativa L.), a member of the family Poaceae, is the most important cereal crop and the staple food of over half the world’s population and is central to the lives of billions of people around the world. India is the world’s secondlargest producer of Rice (Ladha et al, 2016). Rice has the total harvested area of approximately 158 million hectares and production of more than 700 million tonnes annually (470 million tonnes of milled rice) (Ricepedia and Irri, 2018).In recent days, there is a slowdown in the rice area and yield. Nutrient management is the most basic factor and is found to exert a great influence on growth and yield attributes and for

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Results