Spanish to English Science Forestry / Wood / Timber agro-forestry and tools for cocoa production (Nicaragua)

Dear colleagues:

I will be posting a few terms which are driving me "potty", but I will post them separately (cobas, and cedazo para zarandas). I am not sure that "cobas" is correct, and I have tried variations, but nothing.
This report relates to Nicaragua.

 Los comité de compras se realizó comprar Herramientas: equipos, materiales e insumos para el vivero: 1 computadora portátil Marca Hp, una impresora Multifuncional modelo Seiko EPSON, Compra de Regadoras, Compra de Cobas, Compra de Azadones, Compra de Palas, **Compra de cedazo para zarandas**, Compra de bolsas de polietileno para vivero de cacao, compra de machetes, Compra de limas Compra de tijeras podar, Compra de Cierras (sic) de podar. * I assume what is meant is "sierras".

 Insumos para los Sistemas Agroforestales: traslados de plantas maderables de Cedro Real, Caoba, Cedro Macho, Quebracho, guapinol, acacia, cortes.

I have researched "cedazo" and it mentions "sieve", as does "zarandas"; I need the term for "zarandas", but I also found "zarandas" in Mexico is a "wheel barrow", but the report is Nicaraguan, so "wheel barrow" does not help.

Thank you all so much for your invaluable assistance.

Taña