Drying of tips and along leaf edges (oldest leaves affected first)
Interveinal chlorosis along leaf margins
Ragged appearance (dried leaf tissue falls from leaflet edges)
Delayed maturity and poor yields
Uneven ripening of fruits
Potassium is one of the three primary macronutrients required in high amounts by all plants. Potassium is what the “K” stands for in “N. P. K.” fertilizers. K+ is the most abundant cation found in plants cells.
Potassium plays many important regulatory roles in plant development processes; it affects osmotic regulation and is involved in the opening and closing of stomata. Therefore, it affects photosynthesis and water regime in plants.
When potassium uptake is inadequate, the stomata responds slowly. This results in less water circulation in plants, making them more susceptible to drought and temperature changes.
Kandungan kalium tanah akan cepat habis jika produksi tanaman dalam kapasitas yang tinggi. pupuk potassium biasanya diaplikasikan selama penanaman. Diperlukan beberapa aplikasi pupuk kalium ketika berhadapan dengan tanah berpasir atau tanah yang memiliki kandungan mineral pengikat kalium dalam jumlah tinggi,. Kalium klorida (KCL) atau muriat kalium (MOP) adalah pupuk kalium yang banyak digunakan. Kalium nitrat (KNO3) diketahui digunakan dalam penyemprotan daun atau pemupukan cair (drip) dikarenakan memiliki tingkat karakteristik kelarutan dalam air yang tinggi.
*Names marked in red are considered to be highly poisonous to beneficial insects.
*Names marked in green are considered to be organic and IPM (integrated pest management) compatible.