Question

Plant Density and Tomato Yield. In "Effects of Plant Density on Tomato Yields in Western Nigeria" (Experimental Agriculture,Vol. 12(1), pp. 43-47 ), B. Adelana reported on the effect of tomato variety and planting density on yield. Four tomato varieties (Harvester, Pusa Early Dwarf, Ife No. 1, and Ibadan Local ) were grown at four densities ( 10,000, 20,000, 30,000, and 40,000 plants/ha). Identify the

a. experimental units. b. response variable.

c. factor (s). d. levels of each factor.

e. treatments.

Short answer

Part (a) tomato plants.

Part (b) Yields of Tomato plants.

Part (c) tomato varieties and tomato densities.

Part (d) Harvester, Pusa Early Dwarf, Ife No. 1, and Ibadan Local, and 10,000, 20,000, 30,000, and 40,000.

Part (e) 16

Step-by-step solution

Part (a) Step 1. Given information.

The given statement is:

The effect of tomato variety and planting density on yield were studied.

There are four tomato varieties (Harvester, Pusa Early Dwarf, Ife No. 1, and Ibadan Local ) were grown at four densities ( 10,000, 20,000, 30,000, and 40,000 plants/ha).

Part (a) Step 2. Identify the experimental units.

Taking into consideration the given designed experiment, the Experimental units are tomato plants.

Part (b) Step 1. Identify the response variable.

The response variable is the Yields of Tomato plants.

Part (c) Step 1. Identify the factor.

Here, the factors include:

1. tomato varieties
2. tomato densities

Part (d) Step 1. Identify the levels of each factor.

The four levels of tomato varieties are:

1. Harvester,
2. Pusa Early Dwarf,
3. Ife No. 1, and
4. Ibadan Local

The four levels of tomato densities are:

1. 10,000,
2. 20,000,
3. 30,000,
4. 40,000

Part (e) Step 1. Identify the treatments.

Treatments are a mix of tomato varieties and tomato densities levels.

It is:

$4\times 4=16$