Pistachios Problems

Raw Open Shell

pistachio-open-1-300x222 Pistachios Problems

Raw Closed Shell

close-mouth-1 Pistachios Problems

Roasted & salted

roasted-new Pistachios Problems

Problems With Pistachios

consumption-8 Pistachios ProblemsPistachios are a nut that grows on trees. At maturity, the nut's shell is partially cracked, and the consumer cracks it the rest of the way before eating. Some problems can arise with pistachios in the growing and processing procedures.

 Pistachio Disorders

  • Pistachios have physiological disorders that affect the way that they look. They may grow too small or may be shrunken. Rancidification is a problem that involves the shells becoming stained. The nuts are not picked until the shell splits, so if this takes too long, the fruit can go bad. Sometimes the shells develop without any nuts, due to unsuccessful fertilization.


Insect Diseases

  • Insects cause diseases on both the exterior and interior of the nut. The exterior can experience discolorations, but the nut will be safe. However, if insects are able to get through the shell, the nut will become diseased. The insect that causes the biggest problem to pistachios is the navel orange worm. They cause a problem when the nuts are on the tree, not when they are being stored. Some of these diseases can be transferred to other nuts and parts of the tree, which is of great concern to nut producers.


Fungal Diseases

  • Fungal diseases are spread by insect infestation and infection, but they may also be exacerbated by storage issues. When insects feed on young nuts, which are particularly susceptible, the infestation may not be caught until the nut is mature. Storing pistachios in a clean, dry area will ensure that they do not develop a fungal disease as a result of storage.


List of pistachios diseases(Pistacia vera).


Fungal diseases


Fungal diseases
Alternaria late blight Alternaria alternata
Armillaria root rot Armillaria mellea
Aspergillus fruit rot Aspergillus niger
Blossom and shoot blight Botrytis cinerea
Botryotinia fuckeliana [teleomorph]
Camarosporium shoot and panicle blight Camarosporium pistaciae
Cotton root rot
(also known as Phymatotrichum Root Rot)
Phymatotrichopsis omnivora
Eutypa dieback Eutypa lata
Libertella blepharis [anamorph]
Gum canker Cytospora terebinthi
Leaf spot Phyllosticta lentisci
Panicle and shoot blight Botryosphaeria dothidea
Phomopsis shoot blight Phomopsis sp.
Powdery mildew Phyllactinia angulata
Phytophthora root and crown rot Phytophthora capsici
Phytophthora citricola
Phytophthora citrophthora
Phytophthora cryptogea
Phytophthora nicotianae var. parasitica
Rust Pileolaria terebinthi
Uromyces terebinthi
Sclerotinia shoot blight Sclerotinia sclerotiorum
Seedling blight Rhizoctonia solani
Thanatephorus cucumeris [teleomorph]
Septoria leaf spot Septoria pistacina
Mycosphaerella pistacina [teleomorph]
Septoria pistaciarum
Mycosphaerella pistaciarum [teleomorph]
Phloeospora pistaciae
Septoria pistaciae
Stigmatomycosis Ashbya gossypii
Eremothecium coryli
Nematospora coryli
Aureobasidium pullulans
Thread blight Ceratobasidium sp.
Phytophthora trunk and bark canker Phytophthora capsici
Phytophthora cryptogea
Phytophthora nicotianae var. parasitica
Verticillium wilt Verticillium dahliae



Diseases of uncertain cause


Diseases of uncertain cause
Damage by other means Unknown
Dieback and canker Suspected: Paecilomyces variotii Bainier
Peter's scorch Unknown
Pin sized lesion Unknown



Miscellaneous diseases and disorders


Miscellaneous diseases and disorders
Epicarp lesion Insect feeding injury
Sapwood rot

Pleurotus ostreatus

Schizophyllum commune