Pests of Crops, Stored Grains, and Plant Disease Identification and Management

A comprehensive review deck of images covering agricultural crop pests, stored grain management techniques, sampling devices, and common plant pathogens.

During the vegetative growth stage of rice, feeding by the larva of the Yellow Stem Borer (Scirpophaga incertulas) causes drying of the central shoot known as __________.

Dead Heart

Among stored grain pests, only the grubs of __________ damage wheat near the embryo, reducing the grain into mere frass in severe infestations.

Khapra beetle (Trogoderma granarium)

In chemical detection of hidden insect infestation in stored grains, the machine in which wheat kernels are crushed on a ninhydrin-impregnated paper strip is known as the __________.

Ashman Simon Hidden Infestation Detector

The hand-held scoop shown in the image, designed for obtaining small spot-check samples from bulk grain on moving conveyor belts, is the __________.

Ellis Cup sampler

During grain storage under airtight conditions at high humidity when grain moisture exceeds $16\%$, insect metabolism can create a hot spot that raises the grain temperature to about __________.

$$42\,^\circ\text{C}$$

Aluminium phosphide ($\text{ALP}$) formulation tablets weighing approximately $3\,\text{g}$ release approximately __________ of phosphine gas ($\text{PH}_3$).

$$1\,\text{g}$$

Black and Yellow Sigatoka diseases in plantains and bananas are caused by Mycosphaerella fijiensis and __________.

Mycosphaerella musicola

Moko disease in plantain and banana, characterized by bacterial ooze from the inner portion of the sucker, is caused by the bacterium __________.

Ralstonia solanacearum

In papaya, the physiological disorder depicted in the image that results in rough, distorted fruit shape is __________.

Boron deficiency

A non-parasitic nematode found in large quantities in soil under shaded cultivation that can be used for biological control of diamondback moth, caterpillar moth, and armyworm is __________.

Rhabditis sp.