Dalar Gyada
Dalar Gyada tari ne na buhunhunan gyada da aka yi. An gina pyramids a biranen arewacin Najeriya kamar Kano, inda samar da groundnut ya kasance babban bangare na tattalin arziki. An kalli su a matsayin jan hankalin yawon bude ido da kuma alamar wadata. A cikin shekarun 1960 da 70, yayin da samarwa a Najeriya ta sauya daga noma zuwa mai, pyramids na groundnut sun ɓace. Kwanan nan, gwamnatin Najeriya ta yi ƙoƙari ta farfado da masana'antar nut da sake gina pyramids.

Tarihi 
Alhassan Dantata sanannen ɗan kasuwa ne ka kafa dalar gyaɗa. Dantata ya zo Kano a cikin 1919 kuma a cikin shekaru biyar ya kasance ɗaya daga cikin ƴan kasuwar da suka yi nasara, ya samar da Kamfanin Royal Niger (RNC) da mafi yawan abincin su. 

Kamfanin Dantata ya ajiye nutsu a wani wurin aiki a Kofar Nassarawa, kuma suna tara dalar buhuna kafin a tura su. Za'a iya yin dala ɗaya daga buduna 15,000. Wani ɗan jarida wanda ya ziyarci tsohon wajen dalar a Kano ya ba da rahoton cewa ƙasar yanzu filin ƙwallon ƙafa ne.

An gina dalolin na ƙasa a duk faɗin arewacin Najeriya, a biranen kamar Kofar Mazugal, Brigade, Bebeji, Malam Madori da Dawakin Kudu. Dalolinsun zama daidai da arzikin noma na Najeriya; hatimi har ma ya nuna dala mai laushi. Koyaya, yayin da samar da gyaɗa ya ragu a cikin shekarun 1970 da 80 dalolin gyadar sun ɓace kuma an maye gurbinsu da gine-gine.

Ƙoƙarin zamani 
A ranar 24 ga Fabrairu, 2014, Dokta Akimwumi Adesina, Ministan Noma da Ci gaban Karkara sun ƙaddamar da aikin cibiyar farfaɗo da darajar gyaɗa. Wannan aikin haɗin gwiwa ne tsakanin Gwamnatin Tarayya ta Najeriya da Cibiyar Nazarin Amfanin Gona ta Duniya domin Semi-Arid Tropics (ICRISAT). Manufarsu ta ninki biyu ne: don ƙara yawan Najeriya Shugaba Goodluck Jonathan ya sake jaddada sha'awar gwamnati ta sake gina dalolin a cikin jawabin keɓewar gada a watan Maris na shekara ta 2015.

Bayanan da aka yi amfani da su 

Kano (jiha)