Response of Rice (&lt;i&gt;Oryza sativa&lt;/i&gt;) to the Application of Manganese in Makurdi, Benue State, Nigeria

Friday Ibrahim,S.I Anebi,P Michael Alogakho

doi:10.18052/www.scipress.com/jhpr.4.17

Response of Rice (<i>Oryza sativa</i>) to the Application of Manganese in Makurdi, Benue State, Nigeria

Friday Ibrahim, S.I Anebi + Show 1 more

Open Access

https://doi.org/10.18052/www.scipress.com/jhpr.4.17

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Abstract

A pot experiment was carried out at the Agronomy Teaching and Research Farm of the University of Agriculture Makurdi to determine the effect of manganese fertilizer on the growth and yield of rice. Treatment consists of five levels of Manganese (Mn) (0, 5, 10, 15 and 20 kg ha-1) in form of MnSO4. The treatments were laid out in a Completely Randomized Design (CRD) with three replications. The effect of Mn on the growth of rice indicate that there were no significant difference in the growth parameters measured with the exception of plant height at 8 weeks after planting and number of tillers at 4 weeks after planting. The tallest plants and highest number of tillers were obtained with 10 kg ha-1Mn. The effect of Mn on the yield of rice indicate that there was a significant difference in the yield parameters measured with the exception of number of grain per panicle and root weight at 4 weeks after planting. Manganese at the rate of 10 kg ha-1gave the highest grain yield (2,667 kg ha-1) and highest dry matter weight. Levels of Mn above 10 kg ha-1led to yield decrease, therefore application of 10 kg ha-1Mn was recommended for optimum yield of rice.

Highlights

Micronutrients are chemical elements necessary for plant growth in only extremely small amount
The effect of Mn on the growth of rice (Table 2) indicate that there were no significant difference in the growth parameters measured with the exception of plant height at 8 weeks after planting and number of tillers at 4 weeks after planting
The effect of Mn on the yield of rice (Table 3) indicated that there were no significant difference in the yield parameters measured with the exception of dry matter weight (DMW), grain yield and root weight (RW) at 8 weeks after planting

Summary

Introduction

Micronutrients are chemical elements necessary for plant growth in only extremely small amount. Required in minute quantities, they have the same agronomic importance as macronutrients and play vital roles in the growth of plants [1]. These metallic chemical elements include Zinc (Zn), Iron (Fe), Copper (cu) and manganese (Mn), amongst others. Manganese is part of an important antioxidant (superoxide dismutase) structure that protects plant cells by deactivating free radicals which can destroy plant tissue. It plays vital roles in photosynthesis, as a structural component of the Photosystem II water splitting protein. It serves as electron storage and delivery to the chlorophyll reaction centers [4, 5]

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