Amfani da 2-4d mai sarrafa girma shuka:

1. Tumatir: Daga kwana 1 kafin fure zuwa kwanaki 1-2 bayan fure, yi amfani da maganin 5-10mg/L 2,4-D don fesa, shafa ko jiƙa gungun furanni don hana faɗuwar furanni da 'ya'yan itace.

Gibberellic acid GA3 shine hormone na shuka. Lokacin da ake magana akan hormones, mutane da yawa suna tunanin cewa zai zama cutarwa ga jikin mutum. A gaskiya ma, Gibberellic Acid GA3, a matsayin hormone na shuka, ba shi da lahani ga jikin mutum.

Gibberellic acid GA3 shine muhimmin hormone girma na tsire-tsire wanda zai iya inganta haɓakar iri. An samo Gibberellic Acid GA3 don kunna wasu kwayoyin halitta a cikin tsaba, yana sauƙaƙa tsaba don tsiro a ƙarƙashin yanayin zafi mai dacewa, zafi da haske. Bugu da ƙari, Gibberellic Acid GA3 kuma na iya tsayayya da wahala zuwa wani ɗan lokaci kuma yana ƙara ƙimar tsira na iri.

Akwai nau'ikan takin foliar iri-iri. Dangane da tasirinsu da ayyukansu, ana iya taƙaita takin foliar zuwa rukuni huɗu: abinci mai gina jiki, tsari, ilimin halitta da kuma fili.