ʻO ka Naphthalene acetic acid (NAA) he mea hoʻoponopono hoʻoulu mea kanu synthetic no ka papa naphthalene o nā pūhui. He paʻa kalakala kala ʻole, hiki ke hoʻoheheʻe ʻia i ka wai a me nā mea hoʻoheheʻe organik. Hoʻohana nui ʻia ka Naphthalene acetic acid (NAA) ma ke kahua o ka hoʻoponopono ulu ʻana o nā mea kanu, ʻoi aku ka hana nui i ka ulu a me ka ulu ʻana o nā kumulāʻau huaʻai, nā mea kanu a me nā pua.

ʻO Chlormequat chloride (CCC) kahi mea kū'ē i ka gibberellins. ʻO kāna hana nui ka pale ʻana i ka biosynthesis o gibberellins. Hiki iā ia ke pale i ka elongation cell me ka ʻole o ka hoʻopā ʻana i ka māhele cell, ke kāohi i ka ulu ʻana o nā ʻōpala a me nā lau me ka ʻole o ka hoʻomohala ʻana i nā kino, a laila e loaʻa ai ka mana. o ka elongation, pale i ka noho a hoonui i ka hua.

Hiki i ka ʻakika Gibberellic (GA3) ke hoʻoikaika i ka ulu ʻana o nā hua, ka ulu ʻana o nā mea kanu, a me ka ulu mua ʻana a me ka hua ʻana. Hoʻohana nui ʻia ia i nā ʻano meaʻai like ʻole, a ʻoi aku ka nui o ka hoʻohana ʻana i nā mea kanu.